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package java.awt;

import java.awt.RenderingHints.Key;
import java.awt.geom.AffineTransform;
import java.awt.image.ImageObserver;
import java.awt.image.BufferedImageOp;
import java.awt.image.BufferedImage;
import java.awt.image.RenderedImage;
import java.awt.image.renderable.RenderableImage;
import java.awt.font.GlyphVector;
import java.awt.font.FontRenderContext;
import java.awt.font.TextAttribute;
import java.text.AttributedCharacterIterator;
import java.util.Map;

This Graphics2D class extends the Graphics class to provide more sophisticated control over geometry, coordinate transformations, color management, and text layout. This is the fundamental class for rendering 2-dimensional shapes, text and images on the Java(tm) platform. 
Coordinate Spaces
 All coordinates passed to a Graphics2D object are specified in a device-independent coordinate system called User Space, which is used by applications. The Graphics2D object contains an AffineTransform object as part of its rendering state that defines how to convert coordinates from user space to device-dependent coordinates in Device Space. 
 Coordinates in device space usually refer to individual device pixels and are aligned on the infinitely thin gaps between these pixels. Some Graphics2D objects can be used to capture rendering operations for storage into a graphics metafile for playback on a concrete device of unknown physical resolution at a later time. Since the resolution might not be known when the rendering operations are captured, the Graphics2D Transform is set up to transform user coordinates to a virtual device space that approximates the expected resolution of the target device. Further transformations might need to be applied at playback time if the estimate is incorrect. 
 Some of the operations performed by the rendering attribute objects occur in the device space, but all Graphics2D methods take user space coordinates. 
 Every Graphics2D object is associated with a target that defines where rendering takes place. A GraphicsConfiguration object defines the characteristics of the rendering target, such as pixel format and resolution. The same rendering target is used throughout the life of a Graphics2D object. 
 When creating a Graphics2D object, the GraphicsConfiguration specifies the default transform for the target of the Graphics2D (a Component or Image). This default transform maps the user space coordinate system to screen and printer device coordinates such that the origin maps to the upper left hand corner of the target region of the device with increasing X coordinates extending to the right and increasing Y coordinates extending downward. The scaling of the default transform is set to identity for those devices that are close to 72 dpi, such as screen devices. The scaling of the default transform is set to approximately 72 user space coordinates per square inch for high resolution devices, such as printers. For image buffers, the default transform is the Identity transform. 
Rendering Process
 The Rendering Process can be broken down into four phases that are controlled by the Graphics2D rendering attributes. The renderer can optimize many of these steps, either by caching the results for future calls, by collapsing multiple virtual steps into a single operation, or by recognizing various attributes as common simple cases that can be eliminated by modifying other parts of the operation. 

The steps in the rendering process are:


Determine what to render.
 Constrain the rendering operation to the current Clip. The Clip is specified by a Shape in user space and is controlled by the program using the various clip manipulation methods of Graphics and Graphics2D. This user clip is transformed into device space by the current Transform and combined with the device clip, which is defined by the visibility of windows and
device extents.  The combination of the user clip and device clip
defines the composite clip, which determines the final clipping
region.  The user clip is not modified by the rendering
system to reflect the resulting composite clip.

Determine what colors to render.
 Apply the colors to the destination drawing surface using the current Composite attribute in the Graphics2D context. 


The three types of rendering operations, along with details of each
of their particular rendering processes are:


Shape operations

 If the operation is a draw(Shape) operation, then the createStrokedShape method on the current Stroke attribute in the Graphics2D context is used to construct a new Shape object that contains the outline of the specified Shape. 
 The Shape is transformed from user space to device space using the current Transform in the Graphics2D context. 
 The outline of the Shape is extracted using the getPathIterator method of Shape, which returns a PathIterator object that iterates along the boundary of the Shape. 
 If the Graphics2D object cannot handle the curved segments that the PathIterator object returns then it can call the alternate getPathIterator method of Shape, which flattens the Shape. 
 The current Paint in the Graphics2D context is queried for a PaintContext, which specifies the colors to render in device space. 

Text operations

 The following steps are used to determine the set of glyphs required to render the indicated String: 

 If the argument is a String, then the current Font in the Graphics2D context is asked to convert the Unicode characters in the String into a set of glyphs for presentation with whatever basic layout and shaping algorithms the font implements. 
 If the argument is an AttributedCharacterIterator, the iterator is asked to convert itself to a TextLayout using its embedded font attributes. The TextLayout implements more sophisticated glyph layout algorithms that perform Unicode bi-directional layout adjustments automatically for multiple fonts of differing writing directions. 
 If the argument is a GlyphVector, then the GlyphVector object already contains the appropriate font-specific glyph codes with explicit coordinates for the position of each glyph. 
 The current Font is queried to obtain outlines for the indicated glyphs. These outlines are treated as shapes in user space relative to the position of each glyph that was determined in step 1. 

The character outlines are filled as indicated above
under Shape operations.
 The current Paint is queried for a PaintContext, which specifies the colors to render in device space. 

Image Operations

 The region of interest is defined by the bounding box of the source Image. This bounding box is specified in Image Space, which is the Image object's local coordinate system. 
 If an AffineTransform is passed to drawImage(Image, AffineTransform, ImageObserver), the AffineTransform is used to transform the bounding box from image space to user space. If no AffineTransform is supplied, the bounding box is treated as if it is already in user space. 
 The bounding box of the source Image is transformed from user space into device space using the current Transform. Note that the result of transforming the bounding box does not necessarily result in a rectangular region in device space. 
 The Image object determines what colors to render, sampled according to the source to destination coordinate mapping specified by the current Transform and the optional image transform. 

Default Rendering Attributes
 The default values for the Graphics2D rendering attributes are: 

Paint
The color of the Component. 
Font
The Font of the Component. 
Stroke
A square pen with a linewidth of 1, no dashing, miter segment joins
and square end caps.
Transform
The getDefaultTransform for the GraphicsConfiguration of the Component. 
Composite
The AlphaComposite.SRC_OVER rule. 
Clip
No rendering Clip, the output is clipped to the Component. 
Rendering Compatibility Issues
The JDK(tm) 1.1 rendering model is based on a pixelization model
that specifies that coordinates
are infinitely thin, lying between the pixels.  Drawing operations are
performed using a one-pixel wide pen that fills the
pixel below and to the right of the anchor point on the path.
The JDK 1.1 rendering model is consistent with the
capabilities of most of the existing class of platform
renderers that need  to resolve integer coordinates to a
discrete pen that must fall completely on a specified number of pixels.
 The Java 2D(tm) (Java(tm) 2 platform) API supports antialiasing renderers. A pen with a width of one pixel does not need to fall completely on pixel N as opposed to pixel N+1. The pen can fall partially on both pixels. It is not necessary to choose a bias direction for a wide pen since the blending that occurs along the pen traversal edges makes the sub-pixel position of the pen visible to the user. On the other hand, when antialiasing is turned off by setting the KEY_ANTIALIASING hint key to the VALUE_ANTIALIAS_OFF hint value, the renderer might need to apply a bias to determine which pixel to modify when the pen is straddling a pixel boundary, such as when it is drawn along an integer coordinate in device space. While the capabilities of an antialiasing renderer make it no longer necessary for the rendering model to specify a bias for the pen, it is desirable for the antialiasing and non-antialiasing renderers to perform similarly for the common cases of drawing one-pixel wide horizontal and vertical lines on the screen. To ensure that turning on antialiasing by setting the KEY_ANTIALIASING hint key to VALUE_ANTIALIAS_ON does not cause such lines to suddenly become twice as wide and half as opaque, it is desirable to have the model specify a path for such lines so that they completely cover a particular set of pixels to help increase their crispness. 
 Java 2D API maintains compatibility with JDK 1.1 rendering behavior, such that legacy operations and existing renderer behavior is unchanged under Java 2D API. Legacy methods that map onto general draw and fill methods are defined, which clearly indicates how Graphics2D extends Graphics based on settings of Stroke and Transform attributes and rendering hints. The definition performs identically under default attribute settings. For example, the default Stroke is a BasicStroke with a width of 1 and no dashing and the default Transform for screen drawing is an Identity transform. 

The following two rules provide predictable rendering behavior whether
aliasing or antialiasing is being used.

 Device coordinates are defined to be between device pixels which
avoids any inconsistent results between aliased and antialiased
rendering.  If coordinates were defined to be at a pixel's center, some
of the pixels covered by a shape, such as a rectangle, would only be
half covered.
With aliased rendering, the half covered pixels would either be
rendered inside the shape or outside the shape.  With anti-aliased
rendering, the pixels on the entire edge of the shape would be half
covered.  On the other hand, since coordinates are defined to be
between pixels, a shape like a rectangle would have no half covered
pixels, whether or not it is rendered using antialiasing.
 Lines and paths stroked using the BasicStroke object may be "normalized" to provide consistent rendering of the outlines when positioned at various points on the drawable and whether drawn with aliased or antialiased rendering. This normalization process is controlled by the KEY_STROKE_CONTROL hint. The exact normalization algorithm is not specified, but the goals of this normalization are to ensure that lines are rendered with consistent visual appearance regardless of how they fall on the pixel grid and to promote more solid horizontal and vertical lines in antialiased mode so that they resemble their non-antialiased counterparts more closely. A typical normalization step might promote antialiased line endpoints to pixel centers to reduce the amount of blending or adjust the subpixel positioning of non-antialiased lines so that the floating point line widths round to even or odd pixel counts with equal likelihood. This process can move endpoints by up to half a pixel (usually towards positive infinity along both axes) to promote these consistent results. 

The following definitions of general legacy methods
perform identically to previously specified behavior under default
attribute settings:

 For fill operations, including fillRect, fillRoundRect, fillOval, fillArc, fillPolygon, and clearRect, fill can now be called with the desired Shape. For example, when filling a rectangle: 
fill(new Rectangle(x, y, w, h));

is called.
 Similarly, for draw operations, including drawLine, drawRect, drawRoundRect, drawOval, drawArc, drawPolyline, and drawPolygon, draw can now be called with the desired Shape. For example, when drawing a rectangle: 
draw(new Rectangle(x, y, w, h));

is called.
 The draw3DRect and fill3DRect methods were implemented in terms of the drawLine and fillRect methods in the Graphics class which would predicate their behavior upon the current Stroke and Paint objects in a Graphics2D context. This class overrides those implementations with versions that use the current Color exclusively, overriding the current Paint and which uses fillRect to describe the exact same behavior as the preexisting methods regardless of the setting of the current Stroke. 
 The Graphics class defines only the setColor method to control the color to be painted. Since the Java 2D API extends the Color object to implement the new Paint interface, the existing setColor method is now a convenience method for setting the current Paint attribute to a Color object. setColor(c) is equivalent to setPaint(c). 
 The Graphics class defines two methods for controlling how colors are applied to the destination. 

 The setPaintMode method is implemented as a convenience method to set the default Composite, equivalent to setComposite(new AlphaComposite.SrcOver). 
 The setXORMode(Color xorcolor) method is implemented as a convenience method to set a special Composite object that ignores the Alpha components of source colors and sets the destination color to the value: 
dstpixel = (PixelOf(srccolor) ^ PixelOf(xorcolor) ^ dstpixel);


Author:
Jim Graham
See Also:
RenderingHints/**
 * This {@code Graphics2D} class extends the
 * {@link Graphics} class to provide more sophisticated
 * control over geometry, coordinate transformations, color management,
 * and text layout.  This is the fundamental class for rendering
 * 2-dimensional shapes, text and images on the  Java(tm) platform.
 *
 * <h2>Coordinate Spaces</h2>
 * All coordinates passed to a {@code Graphics2D} object are specified
 * in a device-independent coordinate system called User Space, which is
 * used by applications.  The {@code Graphics2D} object contains
 * an {@link AffineTransform} object as part of its rendering state
 * that defines how to convert coordinates from user space to
 * device-dependent coordinates in Device Space.
 * <p>
 * Coordinates in device space usually refer to individual device pixels
 * and are aligned on the infinitely thin gaps between these pixels.
 * Some {@code Graphics2D} objects can be used to capture rendering
 * operations for storage into a graphics metafile for playback on a
 * concrete device of unknown physical resolution at a later time.  Since
 * the resolution might not be known when the rendering operations are
 * captured, the {@code Graphics2D Transform} is set up
 * to transform user coordinates to a virtual device space that
 * approximates the expected resolution of the target device. Further
 * transformations might need to be applied at playback time if the
 * estimate is incorrect.
 * <p>
 * Some of the operations performed by the rendering attribute objects
 * occur in the device space, but all {@code Graphics2D} methods take
 * user space coordinates.
 * <p>
 * Every {@code Graphics2D} object is associated with a target that
 * defines where rendering takes place. A
 * {@link GraphicsConfiguration} object defines the characteristics
 * of the rendering target, such as pixel format and resolution.
 * The same rendering target is used throughout the life of a
 * {@code Graphics2D} object.
 * <p>
 * When creating a {@code Graphics2D} object,  the
 * {@code GraphicsConfiguration}
 * specifies the <a id="deftransform">default transform</a> for
 * the target of the {@code Graphics2D} (a
 * {@link Component} or {@link Image}).  This default transform maps the
 * user space coordinate system to screen and printer device coordinates
 * such that the origin maps to the upper left hand corner of the
 * target region of the device with increasing X coordinates extending
 * to the right and increasing Y coordinates extending downward.
 * The scaling of the default transform is set to identity for those devices
 * that are close to 72 dpi, such as screen devices.
 * The scaling of the default transform is set to approximately 72 user
 * space coordinates per square inch for high resolution devices, such as
 * printers.  For image buffers, the default transform is the
 * {@code Identity} transform.
 *
 * <h2>Rendering Process</h2>
 * The Rendering Process can be broken down into four phases that are
 * controlled by the {@code Graphics2D} rendering attributes.
 * The renderer can optimize many of these steps, either by caching the
 * results for future calls, by collapsing multiple virtual steps into
 * a single operation, or by recognizing various attributes as common
 * simple cases that can be eliminated by modifying other parts of the
 * operation.
 * <p>
 * The steps in the rendering process are:
 * <ol>
 * <li>
 * Determine what to render.
 * <li>
 * Constrain the rendering operation to the current {@code Clip}.
 * The {@code Clip} is specified by a {@link Shape} in user
 * space and is controlled by the program using the various clip
 * manipulation methods of {@code Graphics} and
 * {@code Graphics2D}.  This <i>user clip</i>
 * is transformed into device space by the current
 * {@code Transform} and combined with the
 * <i>device clip</i>, which is defined by the visibility of windows and
 * device extents.  The combination of the user clip and device clip
 * defines the <i>composite clip</i>, which determines the final clipping
 * region.  The user clip is not modified by the rendering
 * system to reflect the resulting composite clip.
 * <li>
 * Determine what colors to render.
 * <li>
 * Apply the colors to the destination drawing surface using the current
 * {@link Composite} attribute in the {@code Graphics2D} context.
 * </ol>
 * <br>
 * The three types of rendering operations, along with details of each
 * of their particular rendering processes are:
 * <ol>
 * <li>
 * <b><a id="rendershape">{@code Shape} operations</a></b>
 * <ol>
 * <li>
 * If the operation is a {@code draw(Shape)} operation, then
 * the  {@link Stroke#createStrokedShape(Shape) createStrokedShape}
 * method on the current {@link Stroke} attribute in the
 * {@code Graphics2D} context is used to construct a new
 * {@code Shape} object that contains the outline of the specified
 * {@code Shape}.
 * <li>
 * The {@code Shape} is transformed from user space to device space
 * using the current {@code Transform}
 * in the {@code Graphics2D} context.
 * <li>
 * The outline of the {@code Shape} is extracted using the
 * {@link Shape#getPathIterator(AffineTransform) getPathIterator} method of
 * {@code Shape}, which returns a
 * {@link java.awt.geom.PathIterator PathIterator}
 * object that iterates along the boundary of the {@code Shape}.
 * <li>
 * If the {@code Graphics2D} object cannot handle the curved segments
 * that the {@code PathIterator} object returns then it can call the
 * alternate
 * {@link Shape#getPathIterator(AffineTransform, double) getPathIterator}
 * method of {@code Shape}, which flattens the {@code Shape}.
 * <li>
 * The current {@link Paint} in the {@code Graphics2D} context
 * is queried for a {@link PaintContext}, which specifies the
 * colors to render in device space.
 * </ol>
 * <li>
 * <b><a id=rendertext>Text operations</a></b>
 * <ol>
 * <li>
 * The following steps are used to determine the set of glyphs required
 * to render the indicated {@code String}:
 * <ol>
 * <li>
 * If the argument is a {@code String}, then the current
 * {@code Font} in the {@code Graphics2D} context is asked to
 * convert the Unicode characters in the {@code String} into a set of
 * glyphs for presentation with whatever basic layout and shaping
 * algorithms the font implements.
 * <li>
 * If the argument is an
 * {@link AttributedCharacterIterator},
 * the iterator is asked to convert itself to a
 * {@link java.awt.font.TextLayout TextLayout}
 * using its embedded font attributes. The {@code TextLayout}
 * implements more sophisticated glyph layout algorithms that
 * perform Unicode bi-directional layout adjustments automatically
 * for multiple fonts of differing writing directions.
  * <li>
 * If the argument is a
 * {@link GlyphVector}, then the
 * {@code GlyphVector} object already contains the appropriate
 * font-specific glyph codes with explicit coordinates for the position of
 * each glyph.
 * </ol>
 * <li>
 * The current {@code Font} is queried to obtain outlines for the
 * indicated glyphs.  These outlines are treated as shapes in user space
 * relative to the position of each glyph that was determined in step 1.
 * <li>
 * The character outlines are filled as indicated above
 * under <a href="#rendershape">{@code Shape} operations</a>.
 * <li>
 * The current {@code Paint} is queried for a
 * {@code PaintContext}, which specifies
 * the colors to render in device space.
 * </ol>
 * <li>
 * <b><a id= renderingimage>{@code Image} Operations</a></b>
 * <ol>
 * <li>
 * The region of interest is defined by the bounding box of the source
 * {@code Image}.
 * This bounding box is specified in Image Space, which is the
 * {@code Image} object's local coordinate system.
 * <li>
 * If an {@code AffineTransform} is passed to
 * {@link #drawImage(java.awt.Image, java.awt.geom.AffineTransform, java.awt.image.ImageObserver) drawImage(Image, AffineTransform, ImageObserver)},
 * the {@code AffineTransform} is used to transform the bounding
 * box from image space to user space. If no {@code AffineTransform}
 * is supplied, the bounding box is treated as if it is already in user space.
 * <li>
 * The bounding box of the source {@code Image} is transformed from user
 * space into device space using the current {@code Transform}.
 * Note that the result of transforming the bounding box does not
 * necessarily result in a rectangular region in device space.
 * <li>
 * The {@code Image} object determines what colors to render,
 * sampled according to the source to destination
 * coordinate mapping specified by the current {@code Transform} and the
 * optional image transform.
 * </ol>
 * </ol>
 *
 * <h2>Default Rendering Attributes</h2>
 * The default values for the {@code Graphics2D} rendering attributes are:
 * <dl>
 * <dt><i>{@code Paint}</i>
 * <dd>The color of the {@code Component}.
 * <dt><i>{@code Font}</i>
 * <dd>The {@code Font} of the {@code Component}.
 * <dt><i>{@code Stroke}</i>
 * <dd>A square pen with a linewidth of 1, no dashing, miter segment joins
 * and square end caps.
 * <dt><i>{@code Transform}</i>
 * <dd>The
 * {@link GraphicsConfiguration#getDefaultTransform() getDefaultTransform}
 * for the {@code GraphicsConfiguration} of the {@code Component}.
 * <dt><i>{@code Composite}</i>
 * <dd>The {@link AlphaComposite#SRC_OVER} rule.
 * <dt><i>{@code Clip}</i>
 * <dd>No rendering {@code Clip}, the output is clipped to the
 * {@code Component}.
 * </dl>
 *
 * <h2>Rendering Compatibility Issues</h2>
 * The JDK(tm) 1.1 rendering model is based on a pixelization model
 * that specifies that coordinates
 * are infinitely thin, lying between the pixels.  Drawing operations are
 * performed using a one-pixel wide pen that fills the
 * pixel below and to the right of the anchor point on the path.
 * The JDK 1.1 rendering model is consistent with the
 * capabilities of most of the existing class of platform
 * renderers that need  to resolve integer coordinates to a
 * discrete pen that must fall completely on a specified number of pixels.
 * <p>
 * The Java 2D(tm) (Java(tm) 2 platform) API supports antialiasing renderers.
 * A pen with a width of one pixel does not need to fall
 * completely on pixel N as opposed to pixel N+1.  The pen can fall
 * partially on both pixels. It is not necessary to choose a bias
 * direction for a wide pen since the blending that occurs along the
 * pen traversal edges makes the sub-pixel position of the pen
 * visible to the user.  On the other hand, when antialiasing is
 * turned off by setting the
 * {@link RenderingHints#KEY_ANTIALIASING KEY_ANTIALIASING} hint key
 * to the
 * {@link RenderingHints#VALUE_ANTIALIAS_OFF VALUE_ANTIALIAS_OFF}
 * hint value, the renderer might need
 * to apply a bias to determine which pixel to modify when the pen
 * is straddling a pixel boundary, such as when it is drawn
 * along an integer coordinate in device space.  While the capabilities
 * of an antialiasing renderer make it no longer necessary for the
 * rendering model to specify a bias for the pen, it is desirable for the
 * antialiasing and non-antialiasing renderers to perform similarly for
 * the common cases of drawing one-pixel wide horizontal and vertical
 * lines on the screen.  To ensure that turning on antialiasing by
 * setting the
 * {@link RenderingHints#KEY_ANTIALIASING KEY_ANTIALIASING} hint
 * key to
 * {@link RenderingHints#VALUE_ANTIALIAS_ON VALUE_ANTIALIAS_ON}
 * does not cause such lines to suddenly become twice as wide and half
 * as opaque, it is desirable to have the model specify a path for such
 * lines so that they completely cover a particular set of pixels to help
 * increase their crispness.
 * <p>
 * Java 2D API maintains compatibility with JDK 1.1 rendering
 * behavior, such that legacy operations and existing renderer
 * behavior is unchanged under Java 2D API.  Legacy
 * methods that map onto general {@code draw} and
 * {@code fill} methods are defined, which clearly indicates
 * how {@code Graphics2D} extends {@code Graphics} based
 * on settings of {@code Stroke} and {@code Transform}
 * attributes and rendering hints.  The definition
 * performs identically under default attribute settings.
 * For example, the default {@code Stroke} is a
 * {@code BasicStroke} with a width of 1 and no dashing and the
 * default Transform for screen drawing is an Identity transform.
 * <p>
 * The following two rules provide predictable rendering behavior whether
 * aliasing or antialiasing is being used.
 * <ul>
 * <li> Device coordinates are defined to be between device pixels which
 * avoids any inconsistent results between aliased and antialiased
 * rendering.  If coordinates were defined to be at a pixel's center, some
 * of the pixels covered by a shape, such as a rectangle, would only be
 * half covered.
 * With aliased rendering, the half covered pixels would either be
 * rendered inside the shape or outside the shape.  With anti-aliased
 * rendering, the pixels on the entire edge of the shape would be half
 * covered.  On the other hand, since coordinates are defined to be
 * between pixels, a shape like a rectangle would have no half covered
 * pixels, whether or not it is rendered using antialiasing.
 * <li> Lines and paths stroked using the {@code BasicStroke}
 * object may be "normalized" to provide consistent rendering of the
 * outlines when positioned at various points on the drawable and
 * whether drawn with aliased or antialiased rendering.  This
 * normalization process is controlled by the
 * {@link RenderingHints#KEY_STROKE_CONTROL KEY_STROKE_CONTROL} hint.
 * The exact normalization algorithm is not specified, but the goals
 * of this normalization are to ensure that lines are rendered with
 * consistent visual appearance regardless of how they fall on the
 * pixel grid and to promote more solid horizontal and vertical
 * lines in antialiased mode so that they resemble their non-antialiased
 * counterparts more closely.  A typical normalization step might
 * promote antialiased line endpoints to pixel centers to reduce the
 * amount of blending or adjust the subpixel positioning of
 * non-antialiased lines so that the floating point line widths
 * round to even or odd pixel counts with equal likelihood.  This
 * process can move endpoints by up to half a pixel (usually towards
 * positive infinity along both axes) to promote these consistent
 * results.
 * </ul>
 * <p>
 * The following definitions of general legacy methods
 * perform identically to previously specified behavior under default
 * attribute settings:
 * <ul>
 * <li>
 * For {@code fill} operations, including {@code fillRect},
 * {@code fillRoundRect}, {@code fillOval},
 * {@code fillArc}, {@code fillPolygon}, and
 * {@code clearRect}, {@link #fill(Shape) fill} can now be called
 * with the desired {@code Shape}.  For example, when filling a
 * rectangle:
 * <pre>
 * fill(new Rectangle(x, y, w, h));
 * </pre>
 * is called.
 *
 * <li>
 * Similarly, for draw operations, including {@code drawLine},
 * {@code drawRect}, {@code drawRoundRect},
 * {@code drawOval}, {@code drawArc}, {@code drawPolyline},
 * and {@code drawPolygon}, {@link #draw(Shape) draw} can now be
 * called with the desired {@code Shape}.  For example, when drawing a
 * rectangle:
 * <pre>
 * draw(new Rectangle(x, y, w, h));
 * </pre>
 * is called.
 *
 * <li>
 * The {@code draw3DRect} and {@code fill3DRect} methods were
 * implemented in terms of the {@code drawLine} and
 * {@code fillRect} methods in the {@code Graphics} class which
 * would predicate their behavior upon the current {@code Stroke}
 * and {@code Paint} objects in a {@code Graphics2D} context.
 * This class overrides those implementations with versions that use
 * the current {@code Color} exclusively, overriding the current
 * {@code Paint} and which uses {@code fillRect} to describe
 * the exact same behavior as the preexisting methods regardless of the
 * setting of the current {@code Stroke}.
 * </ul>
 * The {@code Graphics} class defines only the {@code setColor}
 * method to control the color to be painted.  Since the Java 2D API extends
 * the {@code Color} object to implement the new {@code Paint}
 * interface, the existing
 * {@code setColor} method is now a convenience method for setting the
 * current {@code Paint} attribute to a {@code Color} object.
 * {@code setColor(c)} is equivalent to {@code setPaint(c)}.
 * <p>
 * The {@code Graphics} class defines two methods for controlling
 * how colors are applied to the destination.
 * <ol>
 * <li>
 * The {@code setPaintMode} method is implemented as a convenience
 * method to set the default {@code Composite}, equivalent to
 * {@code setComposite(new AlphaComposite.SrcOver)}.
 * <li>
 * The {@code setXORMode(Color xorcolor)} method is implemented
 * as a convenience method to set a special {@code Composite} object that
 * ignores the {@code Alpha} components of source colors and sets the
 * destination color to the value:
 * <pre>
 * dstpixel = (PixelOf(srccolor) ^ PixelOf(xorcolor) ^ dstpixel);
 * </pre>
 * </ol>
 *
 * @author Jim Graham
 * @see java.awt.RenderingHints
 */
public abstract class Graphics2D extends Graphics {

    
Constructs a new Graphics2D object. Since Graphics2D is an abstract class, and since it must be customized by subclasses for different output devices, Graphics2D objects cannot be created directly. Instead, Graphics2D objects must be obtained from another Graphics2D object, created by a Component, or obtained from images such as BufferedImage objects. 
See Also:
Component.getGraphics
Graphics.create/**
     * Constructs a new {@code Graphics2D} object.  Since
     * {@code Graphics2D} is an abstract class, and since it must be
     * customized by subclasses for different output devices,
     * {@code Graphics2D} objects cannot be created directly.
     * Instead, {@code Graphics2D} objects must be obtained from another
     * {@code Graphics2D} object, created by a
     * {@code Component}, or obtained from images such as
     * {@link BufferedImage} objects.
     * @see java.awt.Component#getGraphics
     * @see java.awt.Graphics#create
     */
    protected Graphics2D() {
    }

    
Draws a 3-D highlighted outline of the specified rectangle.
The edges of the rectangle are highlighted so that they
appear to be beveled and lit from the upper left corner.

The colors used for the highlighting effect are determined
based on the current color.
The resulting rectangle covers an area that is
width + 1 pixels wide
by height + 1 pixels tall. This method uses the current Color exclusively and ignores the current Paint. 
Params:
x – the x coordinate of the rectangle to be drawn.
y – the y coordinate of the rectangle to be drawn.
width – the width of the rectangle to be drawn.
height – the height of the rectangle to be drawn.
raised – a boolean that determines whether the rectangle
                     appears to be raised above the surface
                     or sunk into the surface.
See Also:
Graphics.fill3DRect/**
     * Draws a 3-D highlighted outline of the specified rectangle.
     * The edges of the rectangle are highlighted so that they
     * appear to be beveled and lit from the upper left corner.
     * <p>
     * The colors used for the highlighting effect are determined
     * based on the current color.
     * The resulting rectangle covers an area that is
     * <code>width&nbsp;+&nbsp;1</code> pixels wide
     * by <code>height&nbsp;+&nbsp;1</code> pixels tall.  This method
     * uses the current {@code Color} exclusively and ignores
     * the current {@code Paint}.
     * @param x the x coordinate of the rectangle to be drawn.
     * @param y the y coordinate of the rectangle to be drawn.
     * @param width the width of the rectangle to be drawn.
     * @param height the height of the rectangle to be drawn.
     * @param raised a boolean that determines whether the rectangle
     *                      appears to be raised above the surface
     *                      or sunk into the surface.
     * @see         java.awt.Graphics#fill3DRect
     */
    public void draw3DRect(int x, int y, int width, int height,
                           boolean raised) {
        Paint p = getPaint();
        Color c = getColor();
        Color brighter = c.brighter();
        Color darker = c.darker();

        setColor(raised ? brighter : darker);
        //drawLine(x, y, x, y + height);
        fillRect(x, y, 1, height + 1);
        //drawLine(x + 1, y, x + width - 1, y);
        fillRect(x + 1, y, width - 1, 1);
        setColor(raised ? darker : brighter);
        //drawLine(x + 1, y + height, x + width, y + height);
        fillRect(x + 1, y + height, width, 1);
        //drawLine(x + width, y, x + width, y + height - 1);
        fillRect(x + width, y, 1, height);
        setPaint(p);
    }

    
Paints a 3-D highlighted rectangle filled with the current color. The edges of the rectangle are highlighted so that it appears as if the edges were beveled and lit from the upper left corner. The colors used for the highlighting effect and for filling are determined from the current Color. This method uses the current Color exclusively and ignores the current Paint. 
Params:
x – the x coordinate of the rectangle to be filled.
y – the y coordinate of the rectangle to be filled.
width – the width of the rectangle to be filled.
height – the height of the rectangle to be filled.
raised – a boolean value that determines whether the
                     rectangle appears to be raised above the surface
                     or etched into the surface.
See Also:
Graphics.draw3DRect/**
     * Paints a 3-D highlighted rectangle filled with the current color.
     * The edges of the rectangle are highlighted so that it appears
     * as if the edges were beveled and lit from the upper left corner.
     * The colors used for the highlighting effect and for filling are
     * determined from the current {@code Color}.  This method uses
     * the current {@code Color} exclusively and ignores the current
     * {@code Paint}.
     * @param x the x coordinate of the rectangle to be filled.
     * @param y the y coordinate of the rectangle to be filled.
     * @param       width the width of the rectangle to be filled.
     * @param       height the height of the rectangle to be filled.
     * @param       raised a boolean value that determines whether the
     *                      rectangle appears to be raised above the surface
     *                      or etched into the surface.
     * @see         java.awt.Graphics#draw3DRect
     */
    public void fill3DRect(int x, int y, int width, int height,
                           boolean raised) {
        Paint p = getPaint();
        Color c = getColor();
        Color brighter = c.brighter();
        Color darker = c.darker();

        if (!raised) {
            setColor(darker);
        } else if (p != c) {
            setColor(c);
        }
        fillRect(x+1, y+1, width-2, height-2);
        setColor(raised ? brighter : darker);
        //drawLine(x, y, x, y + height - 1);
        fillRect(x, y, 1, height);
        //drawLine(x + 1, y, x + width - 2, y);
        fillRect(x + 1, y, width - 2, 1);
        setColor(raised ? darker : brighter);
        //drawLine(x + 1, y + height - 1, x + width - 1, y + height - 1);
        fillRect(x + 1, y + height - 1, width - 1, 1);
        //drawLine(x + width - 1, y, x + width - 1, y + height - 2);
        fillRect(x + width - 1, y, 1, height - 1);
        setPaint(p);
    }

    
Strokes the outline of a Shape using the settings of the current Graphics2D context. The rendering attributes applied include the Clip, Transform, Paint, Composite and Stroke attributes. 
Params:
s – the Shape to be rendered
See Also:
setStroke
setPaint
Graphics.setColor
transform
setTransform
clip
Graphics.setClip
setComposite/**
     * Strokes the outline of a {@code Shape} using the settings of the
     * current {@code Graphics2D} context.  The rendering attributes
     * applied include the {@code Clip}, {@code Transform},
     * {@code Paint}, {@code Composite} and
     * {@code Stroke} attributes.
     * @param s the {@code Shape} to be rendered
     * @see #setStroke
     * @see #setPaint
     * @see java.awt.Graphics#setColor
     * @see #transform
     * @see #setTransform
     * @see #clip
     * @see #setClip
     * @see #setComposite
     */
    public abstract void draw(Shape s);

    
Renders an image, applying a transform from image space into user space before drawing. The transformation from user space into device space is done with the current Transform in the Graphics2D. The specified transformation is applied to the image before the transform attribute in the Graphics2D context is applied. The rendering attributes applied include the Clip, Transform, and Composite attributes. Note that no rendering is done if the specified transform is noninvertible. 
Params:
img – the specified image to be rendered. This method does nothing if img is null.
xform – the transformation from image space into user space
obs – the ImageObserver to be notified as more of the Image is converted
See Also:
transform
setTransform
setComposite
clip
Graphics.setClip
Returns:
true if the Image is fully loaded and completely rendered, or if it's null; false if the Image is still being loaded./**
     * Renders an image, applying a transform from image space into user space
     * before drawing.
     * The transformation from user space into device space is done with
     * the current {@code Transform} in the {@code Graphics2D}.
     * The specified transformation is applied to the image before the
     * transform attribute in the {@code Graphics2D} context is applied.
     * The rendering attributes applied include the {@code Clip},
     * {@code Transform}, and {@code Composite} attributes.
     * Note that no rendering is done if the specified transform is
     * noninvertible.
     * @param img the specified image to be rendered.
     *            This method does nothing if {@code img} is null.
     * @param xform the transformation from image space into user space
     * @param obs the {@link ImageObserver}
     * to be notified as more of the {@code Image}
     * is converted
     * @return {@code true} if the {@code Image} is
     * fully loaded and completely rendered, or if it's null;
     * {@code false} if the {@code Image} is still being loaded.
     * @see #transform
     * @see #setTransform
     * @see #setComposite
     * @see #clip
     * @see #setClip
     */
    public abstract boolean drawImage(Image img,
                                      AffineTransform xform,
                                      ImageObserver obs);

    
Renders a BufferedImage that is filtered with a BufferedImageOp. The rendering attributes applied include the Clip, Transform and Composite attributes. This is equivalent to: 
img1 = op.filter(img, null);
drawImage(img1, new AffineTransform(1f,0f,0f,1f,x,y), null);

Params:
op – the filter to be applied to the image before rendering
img – the specified BufferedImage to be rendered. This method does nothing if img is null.
x – the x coordinate of the location in user space where
the upper left corner of the image is rendered
y – the y coordinate of the location in user space where
the upper left corner of the image is rendered
See Also:
transform
setTransform
setComposite
clip
Graphics.setClip/**
     * Renders a {@code BufferedImage} that is
     * filtered with a
     * {@link BufferedImageOp}.
     * The rendering attributes applied include the {@code Clip},
     * {@code Transform}
     * and {@code Composite} attributes.  This is equivalent to:
     * <pre>
     * img1 = op.filter(img, null);
     * drawImage(img1, new AffineTransform(1f,0f,0f,1f,x,y), null);
     * </pre>
     * @param op the filter to be applied to the image before rendering
     * @param img the specified {@code BufferedImage} to be rendered.
     *            This method does nothing if {@code img} is null.
     * @param x the x coordinate of the location in user space where
     * the upper left corner of the image is rendered
     * @param y the y coordinate of the location in user space where
     * the upper left corner of the image is rendered
     *
     * @see #transform
     * @see #setTransform
     * @see #setComposite
     * @see #clip
     * @see #setClip
     */
    public abstract void drawImage(BufferedImage img,
                                   BufferedImageOp op,
                                   int x,
                                   int y);

    
Renders a RenderedImage, applying a transform from image space into user space before drawing. The transformation from user space into device space is done with the current Transform in the Graphics2D. The specified transformation is applied to the image before the transform attribute in the Graphics2D context is applied. The rendering attributes applied include the Clip, Transform, and Composite attributes. Note that no rendering is done if the specified transform is noninvertible. 
Params:
img – the image to be rendered. This method does nothing if img is null.
xform – the transformation from image space into user space
See Also:
transform
setTransform
setComposite
clip
Graphics.setClip/**
     * Renders a {@link RenderedImage},
     * applying a transform from image
     * space into user space before drawing.
     * The transformation from user space into device space is done with
     * the current {@code Transform} in the {@code Graphics2D}.
     * The specified transformation is applied to the image before the
     * transform attribute in the {@code Graphics2D} context is applied.
     * The rendering attributes applied include the {@code Clip},
     * {@code Transform}, and {@code Composite} attributes. Note
     * that no rendering is done if the specified transform is
     * noninvertible.
     * @param img the image to be rendered. This method does
     *            nothing if {@code img} is null.
     * @param xform the transformation from image space into user space
     * @see #transform
     * @see #setTransform
     * @see #setComposite
     * @see #clip
     * @see #setClip
     */
    public abstract void drawRenderedImage(RenderedImage img,
                                           AffineTransform xform);

    
Renders a RenderableImage, applying a transform from image space into user space before drawing. The transformation from user space into device space is done with the current Transform in the Graphics2D. The specified transformation is applied to the image before the transform attribute in the Graphics2D context is applied. The rendering attributes applied include the Clip, Transform, and Composite attributes. Note that no rendering is done if the specified transform is noninvertible. 
 Rendering hints set on the Graphics2D object might be used in rendering the RenderableImage. If explicit control is required over specific hints recognized by a specific RenderableImage, or if knowledge of which hints are used is required, then a RenderedImage should be obtained directly from the RenderableImage and rendered using drawRenderedImage. 
Params:
img – the image to be rendered. This method does nothing if img is null.
xform – the transformation from image space into user space
See Also:
transform
setTransform
setComposite
clip
Graphics.setClip
drawRenderedImage/**
     * Renders a
     * {@link RenderableImage},
     * applying a transform from image space into user space before drawing.
     * The transformation from user space into device space is done with
     * the current {@code Transform} in the {@code Graphics2D}.
     * The specified transformation is applied to the image before the
     * transform attribute in the {@code Graphics2D} context is applied.
     * The rendering attributes applied include the {@code Clip},
     * {@code Transform}, and {@code Composite} attributes. Note
     * that no rendering is done if the specified transform is
     * noninvertible.
     *<p>
     * Rendering hints set on the {@code Graphics2D} object might
     * be used in rendering the {@code RenderableImage}.
     * If explicit control is required over specific hints recognized by a
     * specific {@code RenderableImage}, or if knowledge of which hints
     * are used is required, then a {@code RenderedImage} should be
     * obtained directly from the {@code RenderableImage}
     * and rendered using
     *{@link #drawRenderedImage(RenderedImage, AffineTransform) drawRenderedImage}.
     * @param img the image to be rendered. This method does
     *            nothing if {@code img} is null.
     * @param xform the transformation from image space into user space
     * @see #transform
     * @see #setTransform
     * @see #setComposite
     * @see #clip
     * @see #setClip
     * @see #drawRenderedImage
     */
    public abstract void drawRenderableImage(RenderableImage img,
                                             AffineTransform xform);

    
Renders the text of the specified String, using the current text attribute state in the Graphics2D context. The baseline of the first character is at position (x, y) in the User Space. The rendering attributes applied include the Clip, Transform, Paint, Font and Composite attributes. For characters in script systems such as Hebrew and Arabic, the glyphs can be rendered from right to left, in which case the coordinate supplied is the location of the leftmost character on the baseline. 
Params:
str – the string to be rendered
x – the x coordinate of the location where the String should be rendered
y – the y coordinate of the location where the String should be rendered
Throws:
NullPointerException – if str is null
See Also:
Graphics.drawBytes
Graphics.drawChars
Since:
      1.0/**
     * Renders the text of the specified {@code String}, using the
     * current text attribute state in the {@code Graphics2D} context.
     * The baseline of the
     * first character is at position (<i>x</i>,&nbsp;<i>y</i>) in
     * the User Space.
     * The rendering attributes applied include the {@code Clip},
     * {@code Transform}, {@code Paint}, {@code Font} and
     * {@code Composite} attributes.  For characters in script
     * systems such as Hebrew and Arabic, the glyphs can be rendered from
     * right to left, in which case the coordinate supplied is the
     * location of the leftmost character on the baseline.
     * @param str the string to be rendered
     * @param x the x coordinate of the location where the
     * {@code String} should be rendered
     * @param y the y coordinate of the location where the
     * {@code String} should be rendered
     * @throws NullPointerException if {@code str} is
     *         {@code null}
     * @see         java.awt.Graphics#drawBytes
     * @see         java.awt.Graphics#drawChars
     * @since       1.0
     */
    public abstract void drawString(String str, int x, int y);

    
Renders the text specified by the specified String, using the current text attribute state in the Graphics2D context. The baseline of the first character is at position (x, y) in the User Space. The rendering attributes applied include the Clip, Transform, Paint, Font and Composite attributes. For characters in script systems such as Hebrew and Arabic, the glyphs can be rendered from right to left, in which case the coordinate supplied is the location of the leftmost character on the baseline. 
Params:
str – the String to be rendered
x – the x coordinate of the location where the String should be rendered
y – the y coordinate of the location where the String should be rendered
Throws:
NullPointerException – if str is null
See Also:
setPaint
Graphics.setColor
Graphics.setFont
setTransform
setComposite
Graphics.setClip/**
     * Renders the text specified by the specified {@code String},
     * using the current text attribute state in the {@code Graphics2D} context.
     * The baseline of the first character is at position
     * (<i>x</i>,&nbsp;<i>y</i>) in the User Space.
     * The rendering attributes applied include the {@code Clip},
     * {@code Transform}, {@code Paint}, {@code Font} and
     * {@code Composite} attributes. For characters in script systems
     * such as Hebrew and Arabic, the glyphs can be rendered from right to
     * left, in which case the coordinate supplied is the location of the
     * leftmost character on the baseline.
     * @param str the {@code String} to be rendered
     * @param x the x coordinate of the location where the
     * {@code String} should be rendered
     * @param y the y coordinate of the location where the
     * {@code String} should be rendered
     * @throws NullPointerException if {@code str} is
     *         {@code null}
     * @see #setPaint
     * @see java.awt.Graphics#setColor
     * @see java.awt.Graphics#setFont
     * @see #setTransform
     * @see #setComposite
     * @see #setClip
     */
    public abstract void drawString(String str, float x, float y);

    
Renders the text of the specified iterator applying its attributes in accordance with the specification of the TextAttribute class. 

The baseline of the first character is at position
(x, y) in User Space.
For characters in script systems such as Hebrew and Arabic,
the glyphs can be rendered from right to left, in which case the
coordinate supplied is the location of the leftmost character
on the baseline.
Params:
iterator – the iterator whose text is to be rendered
x – the x coordinate where the iterator's text is to be
rendered
y – the y coordinate where the iterator's text is to be
rendered
Throws:
NullPointerException – if iterator is null
See Also:
setPaint
Graphics.setColor
setTransform
setComposite
Graphics.setClip/**
     * Renders the text of the specified iterator applying its attributes
     * in accordance with the specification of the {@link TextAttribute} class.
     * <p>
     * The baseline of the first character is at position
     * (<i>x</i>,&nbsp;<i>y</i>) in User Space.
     * For characters in script systems such as Hebrew and Arabic,
     * the glyphs can be rendered from right to left, in which case the
     * coordinate supplied is the location of the leftmost character
     * on the baseline.
     * @param iterator the iterator whose text is to be rendered
     * @param x the x coordinate where the iterator's text is to be
     * rendered
     * @param y the y coordinate where the iterator's text is to be
     * rendered
     * @throws NullPointerException if {@code iterator} is
     *         {@code null}
     * @see #setPaint
     * @see java.awt.Graphics#setColor
     * @see #setTransform
     * @see #setComposite
     * @see #setClip
     */
    public abstract void drawString(AttributedCharacterIterator iterator,
                                    int x, int y);

    
Renders the text of the specified iterator applying its attributes in accordance with the specification of the TextAttribute class. 

The baseline of the first character is at position
(x, y) in User Space.
For characters in script systems such as Hebrew and Arabic,
the glyphs can be rendered from right to left, in which case the
coordinate supplied is the location of the leftmost character
on the baseline.
Params:
iterator – the iterator whose text is to be rendered
x – the x coordinate where the iterator's text is to be
rendered
y – the y coordinate where the iterator's text is to be
rendered
Throws:
NullPointerException – if iterator is null
See Also:
setPaint
Graphics.setColor
setTransform
setComposite
Graphics.setClip/**
     * Renders the text of the specified iterator applying its attributes
     * in accordance with the specification of the {@link TextAttribute} class.
     * <p>
     * The baseline of the first character is at position
     * (<i>x</i>,&nbsp;<i>y</i>) in User Space.
     * For characters in script systems such as Hebrew and Arabic,
     * the glyphs can be rendered from right to left, in which case the
     * coordinate supplied is the location of the leftmost character
     * on the baseline.
     * @param iterator the iterator whose text is to be rendered
     * @param x the x coordinate where the iterator's text is to be
     * rendered
     * @param y the y coordinate where the iterator's text is to be
     * rendered
     * @throws NullPointerException if {@code iterator} is
     *         {@code null}
     * @see #setPaint
     * @see java.awt.Graphics#setColor
     * @see #setTransform
     * @see #setComposite
     * @see #setClip
     */
    public abstract void drawString(AttributedCharacterIterator iterator,
                                    float x, float y);

    
Renders the text of the specified GlyphVector using the Graphics2D context's rendering attributes. The rendering attributes applied include the Clip, Transform, Paint, and Composite attributes. The GlyphVector specifies individual glyphs from a Font. The GlyphVector can also contain the glyph positions. This is the fastest way to render a set of characters to the screen. 
Params:
g – the GlyphVector to be rendered
x – the x position in User Space where the glyphs should
be rendered
y – the y position in User Space where the glyphs should
be rendered
Throws:
NullPointerException – if g is null.
See Also:
Font.createGlyphVector
GlyphVector
setPaint
Graphics.setColor
setTransform
setComposite
Graphics.setClip/**
     * Renders the text of the specified
     * {@link GlyphVector} using
     * the {@code Graphics2D} context's rendering attributes.
     * The rendering attributes applied include the {@code Clip},
     * {@code Transform}, {@code Paint}, and
     * {@code Composite} attributes.  The {@code GlyphVector}
     * specifies individual glyphs from a {@link Font}.
     * The {@code GlyphVector} can also contain the glyph positions.
     * This is the fastest way to render a set of characters to the
     * screen.
     * @param g the {@code GlyphVector} to be rendered
     * @param x the x position in User Space where the glyphs should
     * be rendered
     * @param y the y position in User Space where the glyphs should
     * be rendered
     * @throws NullPointerException if {@code g} is {@code null}.
     *
     * @see java.awt.Font#createGlyphVector
     * @see java.awt.font.GlyphVector
     * @see #setPaint
     * @see java.awt.Graphics#setColor
     * @see #setTransform
     * @see #setComposite
     * @see #setClip
     */
    public abstract void drawGlyphVector(GlyphVector g, float x, float y);

    
Fills the interior of a Shape using the settings of the Graphics2D context. The rendering attributes applied include the Clip, Transform, Paint, and Composite. 
Params:
s – the Shape to be filled
See Also:
setPaint
Graphics.setColor
transform
setTransform
setComposite
clip
Graphics.setClip/**
     * Fills the interior of a {@code Shape} using the settings of the
     * {@code Graphics2D} context. The rendering attributes applied
     * include the {@code Clip}, {@code Transform},
     * {@code Paint}, and {@code Composite}.
     * @param s the {@code Shape} to be filled
     * @see #setPaint
     * @see java.awt.Graphics#setColor
     * @see #transform
     * @see #setTransform
     * @see #setComposite
     * @see #clip
     * @see #setClip
     */
    public abstract void fill(Shape s);

    
Checks whether or not the specified Shape intersects the specified Rectangle, which is in device space. If onStroke is false, this method checks whether or not the interior of the specified Shape intersects the specified Rectangle. If onStroke is true, this method checks whether or not the Stroke of the specified Shape outline intersects the specified Rectangle. The rendering attributes taken into account include the Clip, Transform, and Stroke attributes. 
Params:
rect – the area in device space to check for a hit
s – the Shape to check for a hit
onStroke – flag used to choose between testing the stroked or the filled shape. If the flag is true, the Stroke outline is tested. If the flag is false, the filled Shape is tested.
See Also:
setStroke
fill
draw
transform
setTransform
clip
Graphics.setClip
Returns:
true if there is a hit; false otherwise./**
     * Checks whether or not the specified {@code Shape} intersects
     * the specified {@link Rectangle}, which is in device
     * space. If {@code onStroke} is false, this method checks
     * whether or not the interior of the specified {@code Shape}
     * intersects the specified {@code Rectangle}.  If
     * {@code onStroke} is {@code true}, this method checks
     * whether or not the {@code Stroke} of the specified
     * {@code Shape} outline intersects the specified
     * {@code Rectangle}.
     * The rendering attributes taken into account include the
     * {@code Clip}, {@code Transform}, and {@code Stroke}
     * attributes.
     * @param rect the area in device space to check for a hit
     * @param s the {@code Shape} to check for a hit
     * @param onStroke flag used to choose between testing the
     * stroked or the filled shape.  If the flag is {@code true}, the
     * {@code Stroke} outline is tested.  If the flag is
     * {@code false}, the filled {@code Shape} is tested.
     * @return {@code true} if there is a hit; {@code false}
     * otherwise.
     * @see #setStroke
     * @see #fill
     * @see #draw
     * @see #transform
     * @see #setTransform
     * @see #clip
     * @see #setClip
     */
    public abstract boolean hit(Rectangle rect,
                                Shape s,
                                boolean onStroke);

    
Returns the device configuration associated with this Graphics2D. 
Returns:
the device configuration of this Graphics2D./**
     * Returns the device configuration associated with this
     * {@code Graphics2D}.
     * @return the device configuration of this {@code Graphics2D}.
     */
    public abstract GraphicsConfiguration getDeviceConfiguration();

    
Sets the Composite for the Graphics2D context. The Composite is used in all drawing methods such as drawImage, drawString, draw, and fill. It specifies how new pixels are to be combined with the existing pixels on the graphics device during the rendering process. 
If this Graphics2D context is drawing to a Component on the display screen and the Composite is a custom object rather than an instance of the AlphaComposite class, and if there is a security manager, its checkPermission method is called with an AWTPermission("readDisplayPixels") permission. 
Params:
comp – the Composite object to be used for rendering
Throws:
SecurityException –  if a custom Composite object is being used to render to the screen and a security manager is set and its checkPermission method does not allow the operation.
See Also:
Graphics.setXORMode
Graphics.setPaintMode
getComposite
AlphaComposite
SecurityManager.checkPermission
AWTPermission/**
     * Sets the {@code Composite} for the {@code Graphics2D} context.
     * The {@code Composite} is used in all drawing methods such as
     * {@code drawImage}, {@code drawString}, {@code draw},
     * and {@code fill}.  It specifies how new pixels are to be combined
     * with the existing pixels on the graphics device during the rendering
     * process.
     * <p>If this {@code Graphics2D} context is drawing to a
     * {@code Component} on the display screen and the
     * {@code Composite} is a custom object rather than an
     * instance of the {@code AlphaComposite} class, and if
     * there is a security manager, its {@code checkPermission}
     * method is called with an {@code AWTPermission("readDisplayPixels")}
     * permission.
     * @throws SecurityException
     *         if a custom {@code Composite} object is being
     *         used to render to the screen and a security manager
     *         is set and its {@code checkPermission} method
     *         does not allow the operation.
     * @param comp the {@code Composite} object to be used for rendering
     * @see java.awt.Graphics#setXORMode
     * @see java.awt.Graphics#setPaintMode
     * @see #getComposite
     * @see AlphaComposite
     * @see SecurityManager#checkPermission
     * @see java.awt.AWTPermission
     */
    public abstract void setComposite(Composite comp);

    
Sets the Paint attribute for the Graphics2D context. Calling this method with a null Paint object does not have any effect on the current Paint attribute of this Graphics2D. 
Params:
paint – the Paint object to be used to generate color during the rendering process, or null
See Also:
Graphics.setColor
getPaint
GradientPaint
TexturePaint/**
     * Sets the {@code Paint} attribute for the
     * {@code Graphics2D} context.  Calling this method
     * with a {@code null Paint} object does
     * not have any effect on the current {@code Paint} attribute
     * of this {@code Graphics2D}.
     * @param paint the {@code Paint} object to be used to generate
     * color during the rendering process, or {@code null}
     * @see java.awt.Graphics#setColor
     * @see #getPaint
     * @see GradientPaint
     * @see TexturePaint
     */
    public abstract void setPaint( Paint paint );

    
Sets the Stroke for the Graphics2D context. 
Params:
s – the Stroke object to be used to stroke a Shape during the rendering process
See Also:
BasicStroke
getStroke/**
     * Sets the {@code Stroke} for the {@code Graphics2D} context.
     * @param s the {@code Stroke} object to be used to stroke a
     * {@code Shape} during the rendering process
     * @see BasicStroke
     * @see #getStroke
     */
    public abstract void setStroke(Stroke s);

    
Sets the value of a single preference for the rendering algorithms. Hint categories include controls for rendering quality and overall time/quality trade-off in the rendering process. Refer to the RenderingHints class for definitions of some common keys and values. 
Params:
hintKey – the key of the hint to be set.
hintValue – the value indicating preferences for the specified
hint category.
See Also:
getRenderingHint(Key)
RenderingHints/**
     * Sets the value of a single preference for the rendering algorithms.
     * Hint categories include controls for rendering quality and overall
     * time/quality trade-off in the rendering process.  Refer to the
     * {@code RenderingHints} class for definitions of some common
     * keys and values.
     * @param hintKey the key of the hint to be set.
     * @param hintValue the value indicating preferences for the specified
     * hint category.
     * @see #getRenderingHint(RenderingHints.Key)
     * @see RenderingHints
     */
    public abstract void setRenderingHint(Key hintKey, Object hintValue);

    
Returns the value of a single preference for the rendering algorithms. Hint categories include controls for rendering quality and overall time/quality trade-off in the rendering process. Refer to the RenderingHints class for definitions of some common keys and values. 
Params:
hintKey – the key corresponding to the hint to get.
See Also:
RenderingHints
setRenderingHint(Key, Object)
Returns:
an object representing the value for the specified hint key. Some of the keys and their associated values are defined in the RenderingHints class./**
     * Returns the value of a single preference for the rendering algorithms.
     * Hint categories include controls for rendering quality and overall
     * time/quality trade-off in the rendering process.  Refer to the
     * {@code RenderingHints} class for definitions of some common
     * keys and values.
     * @param hintKey the key corresponding to the hint to get.
     * @return an object representing the value for the specified hint key.
     * Some of the keys and their associated values are defined in the
     * {@code RenderingHints} class.
     * @see RenderingHints
     * @see #setRenderingHint(RenderingHints.Key, Object)
     */
    public abstract Object getRenderingHint(Key hintKey);

    
Replaces the values of all preferences for the rendering algorithms with the specified hints. The existing values for all rendering hints are discarded and the new set of known hints and values are initialized from the specified Map object. Hint categories include controls for rendering quality and overall time/quality trade-off in the rendering process. Refer to the RenderingHints class for definitions of some common keys and values. 
Params:
hints – the rendering hints to be set
See Also:
getRenderingHints
RenderingHints/**
     * Replaces the values of all preferences for the rendering
     * algorithms with the specified {@code hints}.
     * The existing values for all rendering hints are discarded and
     * the new set of known hints and values are initialized from the
     * specified {@link Map} object.
     * Hint categories include controls for rendering quality and
     * overall time/quality trade-off in the rendering process.
     * Refer to the {@code RenderingHints} class for definitions of
     * some common keys and values.
     * @param hints the rendering hints to be set
     * @see #getRenderingHints
     * @see RenderingHints
     */
    public abstract void setRenderingHints(Map<?,?> hints);

    
Sets the values of an arbitrary number of preferences for the rendering algorithms. Only values for the rendering hints that are present in the specified Map object are modified. All other preferences not present in the specified object are left unmodified. Hint categories include controls for rendering quality and overall time/quality trade-off in the rendering process. Refer to the RenderingHints class for definitions of some common keys and values. 
Params:
hints – the rendering hints to be set
See Also:
RenderingHints/**
     * Sets the values of an arbitrary number of preferences for the
     * rendering algorithms.
     * Only values for the rendering hints that are present in the
     * specified {@code Map} object are modified.
     * All other preferences not present in the specified
     * object are left unmodified.
     * Hint categories include controls for rendering quality and
     * overall time/quality trade-off in the rendering process.
     * Refer to the {@code RenderingHints} class for definitions of
     * some common keys and values.
     * @param hints the rendering hints to be set
     * @see RenderingHints
     */
    public abstract void addRenderingHints(Map<?,?> hints);

    
Gets the preferences for the rendering algorithms. Hint categories include controls for rendering quality and overall time/quality trade-off in the rendering process. Returns all of the hint key/value pairs that were ever specified in one operation. Refer to the RenderingHints class for definitions of some common keys and values. 
See Also:
RenderingHints
setRenderingHints(Map<?,?>)
Returns:
a reference to an instance of RenderingHints that contains the current preferences./**
     * Gets the preferences for the rendering algorithms.  Hint categories
     * include controls for rendering quality and overall time/quality
     * trade-off in the rendering process.
     * Returns all of the hint key/value pairs that were ever specified in
     * one operation.  Refer to the
     * {@code RenderingHints} class for definitions of some common
     * keys and values.
     * @return a reference to an instance of {@code RenderingHints}
     * that contains the current preferences.
     * @see RenderingHints
     * @see #setRenderingHints(Map)
     */
    public abstract RenderingHints getRenderingHints();

    
Translates the origin of the Graphics2D context to the point (x, y) in the current coordinate system. Modifies the Graphics2D context so that its new origin corresponds to the point (x, y) in the Graphics2D context's former coordinate system. All coordinates used in subsequent rendering operations on this graphics context are relative to this new origin. 
Params:
x – the specified x coordinate
y – the specified y coordinate
Since:
  1.0/**
     * Translates the origin of the {@code Graphics2D} context to the
     * point (<i>x</i>,&nbsp;<i>y</i>) in the current coordinate system.
     * Modifies the {@code Graphics2D} context so that its new origin
     * corresponds to the point (<i>x</i>,&nbsp;<i>y</i>) in the
     * {@code Graphics2D} context's former coordinate system.  All
     * coordinates used in subsequent rendering operations on this graphics
     * context are relative to this new origin.
     * @param  x the specified x coordinate
     * @param  y the specified y coordinate
     * @since   1.0
     */
    public abstract void translate(int x, int y);

    
Concatenates the current Graphics2D Transform with a translation transform. Subsequent rendering is translated by the specified distance relative to the previous position. This is equivalent to calling transform(T), where T is an AffineTransform represented by the following matrix: 
         [   1    0    tx  ]
         [   0    1    ty  ]
         [   0    0    1   ]

Params:
tx – the distance to translate along the x-axis
ty – the distance to translate along the y-axis/**
     * Concatenates the current
     * {@code Graphics2D Transform}
     * with a translation transform.
     * Subsequent rendering is translated by the specified
     * distance relative to the previous position.
     * This is equivalent to calling transform(T), where T is an
     * {@code AffineTransform} represented by the following matrix:
     * <pre>
     *          [   1    0    tx  ]
     *          [   0    1    ty  ]
     *          [   0    0    1   ]
     * </pre>
     * @param tx the distance to translate along the x-axis
     * @param ty the distance to translate along the y-axis
     */
    public abstract void translate(double tx, double ty);

    
Concatenates the current Graphics2D Transform with a rotation transform. Subsequent rendering is rotated by the specified radians relative to the previous origin. This is equivalent to calling transform(R), where R is an AffineTransform represented by the following matrix: 
         [   cos(theta)    -sin(theta)    0   ]
         [   sin(theta)     cos(theta)    0   ]
         [       0              0         1   ]

Rotating with a positive angle theta rotates points on the positive
x axis toward the positive y axis.
Params:
theta – the angle of rotation in radians/**
     * Concatenates the current {@code Graphics2D}
     * {@code Transform} with a rotation transform.
     * Subsequent rendering is rotated by the specified radians relative
     * to the previous origin.
     * This is equivalent to calling {@code transform(R)}, where R is an
     * {@code AffineTransform} represented by the following matrix:
     * <pre>
     *          [   cos(theta)    -sin(theta)    0   ]
     *          [   sin(theta)     cos(theta)    0   ]
     *          [       0              0         1   ]
     * </pre>
     * Rotating with a positive angle theta rotates points on the positive
     * x axis toward the positive y axis.
     * @param theta the angle of rotation in radians
     */
    public abstract void rotate(double theta);

    
Concatenates the current Graphics2D Transform with a translated rotation transform. Subsequent rendering is transformed by a transform which is constructed by translating to the specified location, rotating by the specified radians, and translating back by the same amount as the original translation. This is equivalent to the following sequence of calls: 
         translate(x, y);
         rotate(theta);
         translate(-x, -y);

Rotating with a positive angle theta rotates points on the positive
x axis toward the positive y axis.
Params:
theta – the angle of rotation in radians
x – the x coordinate of the origin of the rotation
y – the y coordinate of the origin of the rotation/**
     * Concatenates the current {@code Graphics2D}
     * {@code Transform} with a translated rotation
     * transform.  Subsequent rendering is transformed by a transform
     * which is constructed by translating to the specified location,
     * rotating by the specified radians, and translating back by the same
     * amount as the original translation.  This is equivalent to the
     * following sequence of calls:
     * <pre>
     *          translate(x, y);
     *          rotate(theta);
     *          translate(-x, -y);
     * </pre>
     * Rotating with a positive angle theta rotates points on the positive
     * x axis toward the positive y axis.
     * @param theta the angle of rotation in radians
     * @param x the x coordinate of the origin of the rotation
     * @param y the y coordinate of the origin of the rotation
     */
    public abstract void rotate(double theta, double x, double y);

    
Concatenates the current Graphics2D Transform with a scaling transformation Subsequent rendering is resized according to the specified scaling factors relative to the previous scaling. This is equivalent to calling transform(S), where S is an AffineTransform represented by the following matrix: 
         [   sx   0    0   ]
         [   0    sy   0   ]
         [   0    0    1   ]

Params:
sx – the amount by which X coordinates in subsequent
rendering operations are multiplied relative to previous
rendering operations.
sy – the amount by which Y coordinates in subsequent
rendering operations are multiplied relative to previous
rendering operations./**
     * Concatenates the current {@code Graphics2D}
     * {@code Transform} with a scaling transformation
     * Subsequent rendering is resized according to the specified scaling
     * factors relative to the previous scaling.
     * This is equivalent to calling {@code transform(S)}, where S is an
     * {@code AffineTransform} represented by the following matrix:
     * <pre>
     *          [   sx   0    0   ]
     *          [   0    sy   0   ]
     *          [   0    0    1   ]
     * </pre>
     * @param sx the amount by which X coordinates in subsequent
     * rendering operations are multiplied relative to previous
     * rendering operations.
     * @param sy the amount by which Y coordinates in subsequent
     * rendering operations are multiplied relative to previous
     * rendering operations.
     */
    public abstract void scale(double sx, double sy);

    
Concatenates the current Graphics2D Transform with a shearing transform. Subsequent renderings are sheared by the specified multiplier relative to the previous position. This is equivalent to calling transform(SH), where SH is an AffineTransform represented by the following matrix: 
         [   1   shx   0   ]
         [  shy   1    0   ]
         [   0    0    1   ]

Params:
shx – the multiplier by which coordinates are shifted in
the positive X axis direction as a function of their Y coordinate
shy – the multiplier by which coordinates are shifted in
the positive Y axis direction as a function of their X coordinate/**
     * Concatenates the current {@code Graphics2D}
     * {@code Transform} with a shearing transform.
     * Subsequent renderings are sheared by the specified
     * multiplier relative to the previous position.
     * This is equivalent to calling {@code transform(SH)}, where SH
     * is an {@code AffineTransform} represented by the following
     * matrix:
     * <pre>
     *          [   1   shx   0   ]
     *          [  shy   1    0   ]
     *          [   0    0    1   ]
     * </pre>
     * @param shx the multiplier by which coordinates are shifted in
     * the positive X axis direction as a function of their Y coordinate
     * @param shy the multiplier by which coordinates are shifted in
     * the positive Y axis direction as a function of their X coordinate
     */
    public abstract void shear(double shx, double shy);

    
Composes an AffineTransform object with the Transform in this Graphics2D according to the rule last-specified-first-applied. If the current Transform is Cx, the result of composition with Tx is a new Transform Cx'. Cx' becomes the current Transform for this Graphics2D. Transforming a point p by the updated Transform Cx' is equivalent to first transforming p by Tx and then transforming the result by the original Transform Cx. In other words, Cx'(p) = Cx(Tx(p)). A copy of the Tx is made, if necessary, so further modifications to Tx do not affect rendering. 
Params:
Tx – the AffineTransform object to be composed with the current Transform
See Also:
setTransform
AffineTransform/**
     * Composes an {@code AffineTransform} object with the
     * {@code Transform} in this {@code Graphics2D} according
     * to the rule last-specified-first-applied.  If the current
     * {@code Transform} is Cx, the result of composition
     * with Tx is a new {@code Transform} Cx'.  Cx' becomes the
     * current {@code Transform} for this {@code Graphics2D}.
     * Transforming a point p by the updated {@code Transform} Cx' is
     * equivalent to first transforming p by Tx and then transforming
     * the result by the original {@code Transform} Cx.  In other
     * words, Cx'(p) = Cx(Tx(p)).  A copy of the Tx is made, if necessary,
     * so further modifications to Tx do not affect rendering.
     * @param Tx the {@code AffineTransform} object to be composed with
     * the current {@code Transform}
     * @see #setTransform
     * @see AffineTransform
     */
    public abstract void transform(AffineTransform Tx);

    
Overwrites the Transform in the Graphics2D context. WARNING: This method should never be used to apply a new coordinate transform on top of an existing transform because the Graphics2D might already have a transform that is needed for other purposes, such as rendering Swing components or applying a scaling transformation to adjust for the resolution of a printer. 
To add a coordinate transform, use the transform, rotate, scale, or shear methods. The setTransform method is intended only for restoring the original Graphics2D transform after rendering, as shown in this example: 
// Get the current transform
AffineTransform saveAT = g2.getTransform();
// Perform transformation
g2d.transform(...);
// Render
g2d.draw(...);
// Restore original transform
g2d.setTransform(saveAT);

Params:
Tx – the AffineTransform that was retrieved from the getTransform method
See Also:
transform
getTransform
AffineTransform/**
     * Overwrites the Transform in the {@code Graphics2D} context.
     * WARNING: This method should <b>never</b> be used to apply a new
     * coordinate transform on top of an existing transform because the
     * {@code Graphics2D} might already have a transform that is
     * needed for other purposes, such as rendering Swing
     * components or applying a scaling transformation to adjust for the
     * resolution of a printer.
     * <p>To add a coordinate transform, use the
     * {@code transform}, {@code rotate}, {@code scale},
     * or {@code shear} methods.  The {@code setTransform}
     * method is intended only for restoring the original
     * {@code Graphics2D} transform after rendering, as shown in this
     * example:
     * <pre>
     * // Get the current transform
     * AffineTransform saveAT = g2.getTransform();
     * // Perform transformation
     * g2d.transform(...);
     * // Render
     * g2d.draw(...);
     * // Restore original transform
     * g2d.setTransform(saveAT);
     * </pre>
     *
     * @param Tx the {@code AffineTransform} that was retrieved
     *           from the {@code getTransform} method
     * @see #transform
     * @see #getTransform
     * @see AffineTransform
     */
    public abstract void setTransform(AffineTransform Tx);

    
Returns a copy of the current Transform in the Graphics2D context. 
See Also:
transform
setTransform
Returns:
the current AffineTransform in the Graphics2D context./**
     * Returns a copy of the current {@code Transform} in the
     * {@code Graphics2D} context.
     * @return the current {@code AffineTransform} in the
     *             {@code Graphics2D} context.
     * @see #transform
     * @see #setTransform
     */
    public abstract AffineTransform getTransform();

    
Returns the current Paint of the Graphics2D context. 
See Also:
setPaint
Graphics.setColor
Returns:
the current Graphics2D Paint, which defines a color or pattern./**
     * Returns the current {@code Paint} of the
     * {@code Graphics2D} context.
     * @return the current {@code Graphics2D Paint},
     * which defines a color or pattern.
     * @see #setPaint
     * @see java.awt.Graphics#setColor
     */
    public abstract Paint getPaint();

    
Returns the current Composite in the Graphics2D context. 
See Also:
setComposite
Returns:
the current Graphics2D Composite, which defines a compositing style./**
     * Returns the current {@code Composite} in the
     * {@code Graphics2D} context.
     * @return the current {@code Graphics2D Composite},
     *              which defines a compositing style.
     * @see #setComposite
     */
    public abstract Composite getComposite();

    
Sets the background color for the Graphics2D context. The background color is used for clearing a region. When a Graphics2D is constructed for a Component, the background color is inherited from the Component. Setting the background color in the Graphics2D context only affects the subsequent clearRect calls and not the background color of the Component. To change the background of the Component, use appropriate methods of the Component. 
Params:
color – the background color that is used in subsequent calls to clearRect
See Also:
getBackground
Graphics.clearRect/**
     * Sets the background color for the {@code Graphics2D} context.
     * The background color is used for clearing a region.
     * When a {@code Graphics2D} is constructed for a
     * {@code Component}, the background color is
     * inherited from the {@code Component}. Setting the background color
     * in the {@code Graphics2D} context only affects the subsequent
     * {@code clearRect} calls and not the background color of the
     * {@code Component}.  To change the background
     * of the {@code Component}, use appropriate methods of
     * the {@code Component}.
     * @param color the background color that is used in
     * subsequent calls to {@code clearRect}
     * @see #getBackground
     * @see java.awt.Graphics#clearRect
     */
    public abstract void setBackground(Color color);

    
Returns the background color used for clearing a region.
See Also:
setBackground
Returns:
the current Graphics2D Color, which defines the background color./**
     * Returns the background color used for clearing a region.
     * @return the current {@code Graphics2D Color},
     * which defines the background color.
     * @see #setBackground
     */
    public abstract Color getBackground();

    
Returns the current Stroke in the Graphics2D context. 
See Also:
setStroke
Returns:
the current Graphics2D Stroke, which defines the line style./**
     * Returns the current {@code Stroke} in the
     * {@code Graphics2D} context.
     * @return the current {@code Graphics2D Stroke},
     *                 which defines the line style.
     * @see #setStroke
     */
    public abstract Stroke getStroke();

    
Intersects the current Clip with the interior of the specified Shape and sets the Clip to the resulting intersection. The specified Shape is transformed with the current Graphics2D Transform before being intersected with the current Clip. This method is used to make the current Clip smaller. To make the Clip larger, use setClip. The user clip modified by this method is independent of the clipping associated with device bounds and visibility. If no clip has previously been set, or if the clip has been cleared using setClip with a null argument, the specified Shape becomes the new user clip. 
Params:
s – the Shape to be intersected with the current Clip. If s is null, this method clears the current Clip./**
     * Intersects the current {@code Clip} with the interior of the
     * specified {@code Shape} and sets the {@code Clip} to the
     * resulting intersection.  The specified {@code Shape} is
     * transformed with the current {@code Graphics2D}
     * {@code Transform} before being intersected with the current
     * {@code Clip}.  This method is used to make the current
     * {@code Clip} smaller.
     * To make the {@code Clip} larger, use {@code setClip}.
     * The <i>user clip</i> modified by this method is independent of the
     * clipping associated with device bounds and visibility.  If no clip has
     * previously been set, or if the clip has been cleared using
     * {@link Graphics#setClip(Shape) setClip} with a {@code null}
     * argument, the specified {@code Shape} becomes the new
     * user clip.
     * @param s the {@code Shape} to be intersected with the current
     *          {@code Clip}.  If {@code s} is {@code null},
     *          this method clears the current {@code Clip}.
     */
     public abstract void clip(Shape s);

     
Get the rendering context of the Font within this Graphics2D context. The FontRenderContext encapsulates application hints such as anti-aliasing and fractional metrics, as well as target device specific information such as dots-per-inch. This information should be provided by the application when using objects that perform typographical formatting, such as Font and TextLayout. This information should also be provided by applications that perform their own layout and need accurate measurements of various characteristics of glyphs such as advance and line height when various rendering hints have been applied to the text rendering. 
See Also:
FontRenderContext
Font.createGlyphVector
TextLayout
Returns:
a reference to an instance of FontRenderContext.
Since:
    1.2/**
     * Get the rendering context of the {@code Font} within this
     * {@code Graphics2D} context.
     * The {@link FontRenderContext}
     * encapsulates application hints such as anti-aliasing and
     * fractional metrics, as well as target device specific information
     * such as dots-per-inch.  This information should be provided by the
     * application when using objects that perform typographical
     * formatting, such as {@code Font} and
     * {@code TextLayout}.  This information should also be provided
     * by applications that perform their own layout and need accurate
     * measurements of various characteristics of glyphs such as advance
     * and line height when various rendering hints have been applied to
     * the text rendering.
     *
     * @return a reference to an instance of FontRenderContext.
     * @see java.awt.font.FontRenderContext
     * @see java.awt.Font#createGlyphVector
     * @see java.awt.font.TextLayout
     * @since     1.2
     */

    public abstract FontRenderContext getFontRenderContext();

}