org.jfree.pixie

Class AbstractGraphics2D

Known Direct Subclasses:
WmfGraphics2D

public abstract class AbstractGraphics2D
extends Graphics2D

Maps all the convinience methods to their root implementations.

Constructor Summary

AbstractGraphics2D()

Method Summary

void
clearRect(int x, int y, int width, int height)
Clears the specified rectangle by filling it with the background color of the current drawing surface.
void
clipRect(int x, int y, int width, int height)
Intersects the current clip with the specified rectangle.
void
drawArc(int x, int y, int width, int height, int startAngle, int arcAngle)
Draws the outline of a circular or elliptical arc covering the specified rectangle.
void
drawGlyphVector(GlyphVector g, float x, float y)
Renders the text of the specified java.awt.font.GlyphVector using the Graphics2D context's rendering attributes.
void
drawImage(BufferedImage img, BufferedImageOp op, int x, int y)
Renders a BufferedImage that is filtered with a java.awt.image.BufferedImageOp.
boolean
drawImage(Image img, int x, int y, Color bgcolor, ImageObserver observer)
Draws as much of the specified image as is currently available.
boolean
drawImage(Image img, int x, int y, ImageObserver observer)
Draws as much of the specified image as is currently available.
boolean
drawImage(Image img, int x, int y, int width, int height, Color bgcolor, ImageObserver observer)
Draws as much of the specified image as has already been scaled to fit inside the specified rectangle.
boolean
drawImage(Image img, int x, int y, int width, int height, ImageObserver observer)
Draws as much of the specified image as has already been scaled to fit inside the specified rectangle.
boolean
drawImage(Image img, int dx1, int dy1, int dx2, int dy2, int sx1, int sy1, int sx2, int sy2, Color bgcolor, ImageObserver observer)
Draws as much of the specified area of the specified image as is currently available, scaling it on the fly to fit inside the specified area of the destination drawable surface.
boolean
drawImage(Image img, int dx1, int dy1, int dx2, int dy2, int sx1, int sy1, int sx2, int sy2, ImageObserver observer)
Draws as much of the specified area of the specified image as is currently available, scaling it on the fly to fit inside the specified area of the destination drawable surface.
void
drawLine(int x1, int y1, int x2, int y2)
Draws a line, using the current color, between the points (x1, y1) and (x2, y2) in this graphics context's coordinate system.
void
drawOval(int x, int y, int width, int height)
Draws the outline of an oval.
void
drawPolygon(int[] xPoints, int[] yPoints, int nPoints)
Draws a closed polygon defined by arrays of x and y coordinates.
void
drawPolyline(int[] xPoints, int[] yPoints, int nPoints)
Draws a sequence of connected lines defined by arrays of x and y coordinates.
void
drawRenderableImage(RenderableImage img, AffineTransform xform)
Renders a java.awt.image.renderable.RenderableImage, applying a transform from image space into user space before drawing.
void
drawRoundRect(int x, int y, int width, int height, int arcWidth, int arcHeight)
Draws an outlined round-cornered rectangle using this graphics context's current color.
void
drawString(AttributedCharacterIterator iterator, float x, float y)
Renders the text of the specified iterator, using the Graphics2D context's current Paint.
void
drawString(AttributedCharacterIterator iterator, int x, int y)
Renders the text of the specified iterator, using the Graphics2D context's current Paint.
void
drawString(String str, int x, int y)
Renders the text of the specified String, using the current Font and Paint attributes in the Graphics2D context.
void
fillArc(int x, int y, int width, int height, int startAngle, int arcAngle)
Fills a circular or elliptical arc covering the specified rectangle.
void
fillOval(int x, int y, int width, int height)
Fills an oval bounded by the specified rectangle with the current color.
void
fillPolygon(int[] xPoints, int[] yPoints, int nPoints)
Fills a closed polygon defined by arrays of x and y coordinates.
void
fillRect(int x, int y, int width, int height)
Fills the specified rectangle.
void
fillRoundRect(int x, int y, int width, int height, int arcWidth, int arcHeight)
Fills the specified rounded corner rectangle with the current color.
Rectangle
getClipBounds()
Returns the bounding rectangle of the current clipping area.
Color
getColor()
Gets this graphics context's current color.
boolean
hit(Rectangle rect, Shape s, boolean onStroke)
Checks whether or not the specified Shape intersects the specified java.awt.Rectangle, which is in device space.
void
rotate(double theta)
Concatenates the current Graphics2D Transform with a rotation transform.
void
rotate(double theta, double x, double y)
Concatenates the current Graphics2D Transform with a translated rotation transform.
void
scale(double sx, double sy)
Concatenates the current Graphics2D Transform with a scaling transformation Subsequent rendering is resized according to the specified scaling factors relative to the previous scaling.
void
setClip(int x, int y, int width, int height)
Sets the current clip to the rectangle specified by the given coordinates.
void
setColor(Color c)
Sets this graphics context's current color to the specified color.
void
shear(double shx, double shy)
Concatenates the current Graphics2D Transform with a shearing transform.
void
transform(AffineTransform Tx)
Composes an AffineTransform object with the Transform in this Graphics2D according to the rule last-specified-first-applied.
void
translate(double tx, double ty)
Concatenates the current Graphics2D Transform with a translation transform.
void
translate(int x, int y)
Translates the origin of the Graphics2D context to the point (xy) in the current coordinate system.

Constructor Details

AbstractGraphics2D

public AbstractGraphics2D()

Method Details

clearRect

public void clearRect(int x,
                      int y,
                      int width,
                      int height)
Clears the specified rectangle by filling it with the background color of the current drawing surface. This operation does not use the current paint mode.

Beginning with Java 1.1, the background color of offscreen images may be system dependent. Applications should use setColor followed by fillRect to ensure that an offscreen image is cleared to a specific color.

Parameters:
x - the x coordinate of the rectangle to clear.
y - the y coordinate of the rectangle to clear.
width - the width of the rectangle to clear.
height - the height of the rectangle to clear.
See Also:
java.awt.Graphics.fillRect(int, int, int, int), java.awt.Graphics.drawRect, java.awt.Graphics.setColor(Color), java.awt.Graphics.setPaintMode, java.awt.Graphics.setXORMode(Color)

clipRect

public void clipRect(int x,
                     int y,
                     int width,
                     int height)
Intersects the current clip with the specified rectangle. The resulting clipping area is the intersection of the current clipping area and the specified rectangle. If there is no current clipping area, either because the clip has never been set, or the clip has been cleared using setClip(null), the specified rectangle becomes the new clip. This method sets the user clip, which is independent of the clipping associated with device bounds and window visibility. This method can only be used to make the current clip smaller. To set the current clip larger, use any of the setClip methods. Rendering operations have no effect outside of the clipping area.
Parameters:
x - the x coordinate of the rectangle to intersect the clip with
y - the y coordinate of the rectangle to intersect the clip with
width - the width of the rectangle to intersect the clip with
height - the height of the rectangle to intersect the clip with

drawArc

public void drawArc(int x,
                    int y,
                    int width,
                    int height,
                    int startAngle,
                    int arcAngle)
Draws the outline of a circular or elliptical arc covering the specified rectangle.

The resulting arc begins at startAngle and extends for arcAngle degrees, using the current color. Angles are interpreted such that 0 degrees is at the 3 o'clock position. A positive value indicates a counter-clockwise rotation while a negative value indicates a clockwise rotation.

The center of the arc is the center of the rectangle whose origin is (xy) and whose size is specified by the width and height arguments.

The resulting arc covers an area width + 1 pixels wide by height + 1 pixels tall.

The angles are specified relative to the non-square extents of the bounding rectangle such that 45 degrees always falls on the line from the center of the ellipse to the upper right corner of the bounding rectangle. As a result, if the bounding rectangle is noticeably longer in one axis than the other, the angles to the start and end of the arc segment will be skewed farther along the longer axis of the bounds.

Parameters:
x - the x coordinate of the upper-left corner of the arc to be drawn.
y - the y coordinate of the upper-left corner of the arc to be drawn.
width - the width of the arc to be drawn.
height - the height of the arc to be drawn.
startAngle - the beginning angle.
arcAngle - the angular extent of the arc, relative to the start angle.
See Also:
java.awt.Graphics.fillArc

drawGlyphVector

public void drawGlyphVector(GlyphVector g,
                            float x,
                            float y)
Renders the text of the specified java.awt.font.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 java.awt.Font. The GlyphVector can also contain the glyph positions. This is the fastest way to render a set of characters to the screen.
Parameters:
g - the GlyphVector to be rendered
x - the position in User Space where the glyphs should be rendered
y - the position in User Space where the glyphs should be rendered

drawImage

public void drawImage(BufferedImage img,
                      BufferedImageOp op,
                      int x,
                      int y)
Renders a BufferedImage that is filtered with a java.awt.image.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);
 
Parameters:
img - the BufferedImage to be rendered
op - the filter to be applied to the image before rendering
See Also:
transform(AffineTransform), AbstractGraphics2D, AbstractGraphics2D, AbstractGraphics2D, setClip(int,int,int,int)

drawImage

public boolean drawImage(Image img,
                         int x,
                         int y,
                         Color bgcolor,
                         ImageObserver observer)
Draws as much of the specified image as is currently available. The image is drawn with its top-left corner at (xy) in this graphics context's coordinate space. Transparent pixels are drawn in the specified background color.

This operation is equivalent to filling a rectangle of the width and height of the specified image with the given color and then drawing the image on top of it, but possibly more efficient.

This method returns immediately in all cases, even if the complete image has not yet been loaded, and it has not been dithered and converted for the current output device.

If the image has not yet been completely loaded, then drawImage returns false. As more of the image becomes available, the process that draws the image notifies the specified image observer.

Parameters:
img - the specified image to be drawn.
x - the x coordinate.
y - the y coordinate.
bgcolor - the background color to paint under the non-opaque portions of the image.
observer - object to be notified as more of the image is converted.
See Also:
java.awt.Image, java.awt.image.ImageObserver, java.awt.image.ImageObserver.imageUpdate(java.awt.Image, int, int, int, int, int)

drawImage

public boolean drawImage(Image img,
                         int x,
                         int y,
                         ImageObserver observer)
Draws as much of the specified image as is currently available. The image is drawn with its top-left corner at (xy) in this graphics context's coordinate space. Transparent pixels in the image do not affect whatever pixels are already there.

This method returns immediately in all cases, even if the complete image has not yet been loaded, and it has not been dithered and converted for the current output device.

If the image has not yet been completely loaded, then drawImage returns false. As more of the image becomes available, the process that draws the image notifies the specified image observer.

Parameters:
img - the specified image to be drawn.
x - the x coordinate.
y - the y coordinate.
observer - object to be notified as more of the image is converted.
See Also:
java.awt.Image, java.awt.image.ImageObserver, java.awt.image.ImageObserver.imageUpdate(java.awt.Image, int, int, int, int, int)

drawImage

public boolean drawImage(Image img,
                         int x,
                         int y,
                         int width,
                         int height,
                         Color bgcolor,
                         ImageObserver observer)
Draws as much of the specified image as has already been scaled to fit inside the specified rectangle.

The image is drawn inside the specified rectangle of this graphics context's coordinate space, and is scaled if necessary. Transparent pixels are drawn in the specified background color. This operation is equivalent to filling a rectangle of the width and height of the specified image with the given color and then drawing the image on top of it, but possibly more efficient.

This method returns immediately in all cases, even if the entire image has not yet been scaled, dithered, and converted for the current output device. If the current output representation is not yet complete then drawImage returns false. As more of the image becomes available, the process that draws the image notifies the specified image observer.

A scaled version of an image will not necessarily be available immediately just because an unscaled version of the image has been constructed for this output device. Each size of the image may be cached separately and generated from the original data in a separate image production sequence.

Parameters:
img - the specified image to be drawn.
x - the x coordinate.
y - the y coordinate.
width - the width of the rectangle.
height - the height of the rectangle.
bgcolor - the background color to paint under the non-opaque portions of the image.
observer - object to be notified as more of the image is converted.
See Also:
java.awt.Image, java.awt.image.ImageObserver, java.awt.image.ImageObserver.imageUpdate(java.awt.Image, int, int, int, int, int)

drawImage

public boolean drawImage(Image img,
                         int x,
                         int y,
                         int width,
                         int height,
                         ImageObserver observer)
Draws as much of the specified image as has already been scaled to fit inside the specified rectangle.

The image is drawn inside the specified rectangle of this graphics context's coordinate space, and is scaled if necessary. Transparent pixels do not affect whatever pixels are already there.

This method returns immediately in all cases, even if the entire image has not yet been scaled, dithered, and converted for the current output device. If the current output representation is not yet complete, then drawImage returns false. As more of the image becomes available, the process that draws the image notifies the image observer by calling its imageUpdate method.

A scaled version of an image will not necessarily be available immediately just because an unscaled version of the image has been constructed for this output device. Each size of the image may be cached separately and generated from the original data in a separate image production sequence.

Parameters:
img - the specified image to be drawn.
x - the x coordinate.
y - the y coordinate.
width - the width of the rectangle.
height - the height of the rectangle.
observer - object to be notified as more of the image is converted.
See Also:
java.awt.Image, java.awt.image.ImageObserver, java.awt.image.ImageObserver.imageUpdate(java.awt.Image, int, int, int, int, int)

drawImage

public boolean drawImage(Image img,
                         int dx1,
                         int dy1,
                         int dx2,
                         int dy2,
                         int sx1,
                         int sy1,
                         int sx2,
                         int sy2,
                         Color bgcolor,
                         ImageObserver observer)
Draws as much of the specified area of the specified image as is currently available, scaling it on the fly to fit inside the specified area of the destination drawable surface.

Transparent pixels are drawn in the specified background color. This operation is equivalent to filling a rectangle of the width and height of the specified image with the given color and then drawing the image on top of it, but possibly more efficient.

This method returns immediately in all cases, even if the image area to be drawn has not yet been scaled, dithered, and converted for the current output device. If the current output representation is not yet complete then drawImage returns false. As more of the image becomes available, the process that draws the image notifies the specified image observer.

This method always uses the unscaled version of the image to render the scaled rectangle and performs the required scaling on the fly. It does not use a cached, scaled version of the image for this operation. Scaling of the image from source to destination is performed such that the first coordinate of the source rectangle is mapped to the first coordinate of the destination rectangle, and the second source coordinate is mapped to the second destination coordinate. The subimage is scaled and flipped as needed to preserve those mappings.

Parameters:
img - the specified image to be drawn
dx1 - the x coordinate of the first corner of the destination rectangle.
dy1 - the y coordinate of the first corner of the destination rectangle.
dx2 - the x coordinate of the second corner of the destination rectangle.
dy2 - the y coordinate of the second corner of the destination rectangle.
sx1 - the x coordinate of the first corner of the source rectangle.
sy1 - the y coordinate of the first corner of the source rectangle.
sx2 - the x coordinate of the second corner of the source rectangle.
sy2 - the y coordinate of the second corner of the source rectangle.
bgcolor - the background color to paint under the non-opaque portions of the image.
observer - object to be notified as more of the image is scaled and converted.
Since:
JDK1.1
See Also:
java.awt.Image, java.awt.image.ImageObserver, java.awt.image.ImageObserver.imageUpdate(java.awt.Image, int, int, int, int, int)

drawImage

public boolean drawImage(Image img,
                         int dx1,
                         int dy1,
                         int dx2,
                         int dy2,
                         int sx1,
                         int sy1,
                         int sx2,
                         int sy2,
                         ImageObserver observer)
Draws as much of the specified area of the specified image as is currently available, scaling it on the fly to fit inside the specified area of the destination drawable surface. Transparent pixels do not affect whatever pixels are already there.

This method returns immediately in all cases, even if the image area to be drawn has not yet been scaled, dithered, and converted for the current output device. If the current output representation is not yet complete then drawImage returns false. As more of the image becomes available, the process that draws the image notifies the specified image observer.

This method always uses the unscaled version of the image to render the scaled rectangle and performs the required scaling on the fly. It does not use a cached, scaled version of the image for this operation. Scaling of the image from source to destination is performed such that the first coordinate of the source rectangle is mapped to the first coordinate of the destination rectangle, and the second source coordinate is mapped to the second destination coordinate. The subimage is scaled and flipped as needed to preserve those mappings.

Parameters:
img - the specified image to be drawn
dx1 - the x coordinate of the first corner of the destination rectangle.
dy1 - the y coordinate of the first corner of the destination rectangle.
dx2 - the x coordinate of the second corner of the destination rectangle.
dy2 - the y coordinate of the second corner of the destination rectangle.
sx1 - the x coordinate of the first corner of the source rectangle.
sy1 - the y coordinate of the first corner of the source rectangle.
sx2 - the x coordinate of the second corner of the source rectangle.
sy2 - the y coordinate of the second corner of the source rectangle.
observer - object to be notified as more of the image is scaled and converted.
Since:
JDK1.1
See Also:
java.awt.Image, java.awt.image.ImageObserver, java.awt.image.ImageObserver.imageUpdate(java.awt.Image, int, int, int, int, int)

drawLine

public void drawLine(int x1,
                     int y1,
                     int x2,
                     int y2)
Draws a line, using the current color, between the points (x1, y1) and (x2, y2) in this graphics context's coordinate system.
Parameters:
x1 - the first point's x coordinate.
y1 - the first point's y coordinate.
x2 - the second point's x coordinate.
y2 - the second point's y coordinate.

drawOval

public void drawOval(int x,
                     int y,
                     int width,
                     int height)
Draws the outline of an oval. The result is a circle or ellipse that fits within the rectangle specified by the x, y, width, and height arguments.

The oval covers an area that is width + 1 pixels wide and height + 1 pixels tall.

Parameters:
x - the x coordinate of the upper left corner of the oval to be drawn.
y - the y coordinate of the upper left corner of the oval to be drawn.
width - the width of the oval to be drawn.
height - the height of the oval to be drawn.
See Also:
java.awt.Graphics.fillOval

drawPolygon

public void drawPolygon(int[] xPoints,
                        int[] yPoints,
                        int nPoints)
Draws a closed polygon defined by arrays of x and y coordinates. Each pair of (xy) coordinates defines a point.

This method draws the polygon defined by nPoint line segments, where the first nPoint - 1 line segments are line segments from (xPoints[i - 1], yPoints[i - 1]) to (xPoints[i], yPoints[i]), for 1 ≤ i ≤ nPoints. The figure is automatically closed by drawing a line connecting the final point to the first point, if those points are different.

Parameters:
xPoints - a an array of x coordinates.
yPoints - a an array of y coordinates.
nPoints - a the total number of points.
See Also:
java.awt.Graphics.fillPolygon, java.awt.Graphics.drawPolyline

drawPolyline

public void drawPolyline(int[] xPoints,
                         int[] yPoints,
                         int nPoints)
Draws a sequence of connected lines defined by arrays of x and y coordinates. Each pair of (xy) coordinates defines a point. The figure is not closed if the first point differs from the last point.
Parameters:
xPoints - an array of x points
yPoints - an array of y points
nPoints - the total number of points
Since:
JDK1.1
See Also:
java.awt.Graphics.drawPolygon(int[], int[], int)

drawRenderableImage

public void drawRenderableImage(RenderableImage img,
                                AffineTransform xform)
Renders a java.awt.image.renderable.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.

Parameters:
img - the image to be rendered
xform - the transformation from image space into user space
See Also:
transform(AffineTransform), AbstractGraphics2D, AbstractGraphics2D, AbstractGraphics2D, setClip(int,int,int,int), AbstractGraphics2D

drawRoundRect

public void drawRoundRect(int x,
                          int y,
                          int width,
                          int height,
                          int arcWidth,
                          int arcHeight)
Draws an outlined round-cornered rectangle using this graphics context's current color. The left and right edges of the rectangle are at x and x + width, respectively. The top and bottom edges of the rectangle are at y and y + height.
Parameters:
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.
arcWidth - the horizontal diameter of the arc at the four corners.
arcHeight - the vertical diameter of the arc at the four corners.
See Also:
java.awt.Graphics.fillRoundRect

drawString

public void drawString(AttributedCharacterIterator iterator,
                       float x,
                       float y)
Renders the text of the specified iterator, using the Graphics2D context's current Paint. The iterator must specify a font for each character. The baseline of the first character is at position (xy) in the User Space. The rendering attributes applied include the Clip, Transform, Paint, 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.
Parameters:
iterator - the iterator whose text is to be rendered
x - the coordinates where the iterator's text is to be rendered
y - the coordinates where the iterator's text is to be rendered

drawString

public void drawString(AttributedCharacterIterator iterator,
                       int x,
                       int y)
Renders the text of the specified iterator, using the Graphics2D context's current Paint. The iterator has to specify a font for each character. The baseline of the first character is at position (xy) in the User Space. The rendering attributes applied include the Clip, Transform, Paint, 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.
Parameters:
iterator - the iterator whose text is to be rendered
x - the coordinates where the iterator's text is to be rendered
y - the coordinates where the iterator's text is to be rendered

drawString

public void drawString(String str,
                       int x,
                       int y)
Renders the text of the specified String, using the current Font and Paint attributes in the Graphics2D context. The baseline of the first character is at position (xy) 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.
Parameters:
str - the string to be rendered
x - the coordinates where the iterator's text is to be rendered
y - the coordinates where the iterator's text is to be rendered
Since:
JDK1.0
See Also:
java.awt.Graphics.drawBytes, java.awt.Graphics.drawChars

fillArc

public void fillArc(int x,
                    int y,
                    int width,
                    int height,
                    int startAngle,
                    int arcAngle)
Fills a circular or elliptical arc covering the specified rectangle.

The resulting arc begins at startAngle and extends for arcAngle degrees. Angles are interpreted such that 0 degrees is at the 3 o'clock position. A positive value indicates a counter-clockwise rotation while a negative value indicates a clockwise rotation.

The center of the arc is the center of the rectangle whose origin is (xy) and whose size is specified by the width and height arguments.

The resulting arc covers an area width + 1 pixels wide by height + 1 pixels tall.

The angles are specified relative to the non-square extents of the bounding rectangle such that 45 degrees always falls on the line from the center of the ellipse to the upper right corner of the bounding rectangle. As a result, if the bounding rectangle is noticeably longer in one axis than the other, the angles to the start and end of the arc segment will be skewed farther along the longer axis of the bounds.

Parameters:
x - the x coordinate of the upper-left corner of the arc to be filled.
y - the y coordinate of the upper-left corner of the arc to be filled.
width - the width of the arc to be filled.
height - the height of the arc to be filled.
startAngle - the beginning angle.
arcAngle - the angular extent of the arc, relative to the start angle.
See Also:
java.awt.Graphics.drawArc

fillOval

public void fillOval(int x,
                     int y,
                     int width,
                     int height)
Fills an oval bounded by the specified rectangle with the current color.
Parameters:
x - the x coordinate of the upper left corner of the oval to be filled.
y - the y coordinate of the upper left corner of the oval to be filled.
width - the width of the oval to be filled.
height - the height of the oval to be filled.
See Also:
java.awt.Graphics.drawOval

fillPolygon

public void fillPolygon(int[] xPoints,
                        int[] yPoints,
                        int nPoints)
Fills a closed polygon defined by arrays of x and y coordinates.

This method draws the polygon defined by nPoint line segments, where the first nPoint - 1 line segments are line segments from (xPoints[i - 1], yPoints[i - 1]) to (xPoints[i], yPoints[i]), for 1 ≤ i ≤ nPoints. The figure is automatically closed by drawing a line connecting the final point to the first point, if those points are different.

The area inside the polygon is defined using an even-odd fill rule, also known as the alternating rule.

Parameters:
xPoints - a an array of x coordinates.
yPoints - a an array of y coordinates.
nPoints - a the total number of points.
See Also:
java.awt.Graphics.drawPolygon(int[], int[], int)

fillRect

public void fillRect(int x,
                     int y,
                     int width,
                     int height)
Fills the specified rectangle. The left and right edges of the rectangle are at x and x + width - 1. The top and bottom edges are at y and y + height - 1. The resulting rectangle covers an area width pixels wide by height pixels tall. The rectangle is filled using the graphics context's current color.
Parameters:
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.
See Also:
java.awt.Graphics.clearRect, java.awt.Graphics.drawRect

fillRoundRect

public void fillRoundRect(int x,
                          int y,
                          int width,
                          int height,
                          int arcWidth,
                          int arcHeight)
Fills the specified rounded corner rectangle with the current color. The left and right edges of the rectangle are at x and x + width - 1, respectively. The top and bottom edges of the rectangle are at y and y + height - 1.
Parameters:
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.
arcWidth - the horizontal diameter of the arc at the four corners.
arcHeight - the vertical diameter of the arc at the four corners.
See Also:
java.awt.Graphics.drawRoundRect

getClipBounds

public Rectangle getClipBounds()
Returns the bounding rectangle of the current clipping area. This method refers to the user clip, which is independent of the clipping associated with device bounds and window visibility. If no clip has previously been set, or if the clip has been cleared using setClip(null), this method returns null. The coordinates in the rectangle are relative to the coordinate system origin of this graphics context.
Returns:
the bounding rectangle of the current clipping area, or null if no clip is set.
Since:
JDK1.1
See Also:
java.awt.Graphics.getClip, java.awt.Graphics.clipRect, java.awt.Graphics.setClip(int, int, int, int), java.awt.Graphics.setClip(Shape)

getColor

public Color getColor()
Gets this graphics context's current color.
Returns:
this graphics context's current color.
See Also:
java.awt.Color, java.awt.Graphics.setColor

hit

public boolean hit(Rectangle rect,
                   Shape s,
                   boolean onStroke)
Checks whether or not the specified Shape intersects the specified java.awt.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.
Parameters:
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 oultine is tested. If the flag is false, the filled Shape is tested.
Returns:
true if there is a hit; false otherwise.

rotate

public void rotate(double theta)
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.
Parameters:
theta - the angle of rotation in radians

rotate

public void rotate(double theta,
                   double x,
                   double y)
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.
Parameters:
theta - the angle of rotation in radians

scale

public void scale(double sx,
                  double sy)
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   ]
 
Parameters:
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.

setClip

public void setClip(int x,
                    int y,
                    int width,
                    int height)
Sets the current clip to the rectangle specified by the given coordinates. This method sets the user clip, which is independent of the clipping associated with device bounds and window visibility. Rendering operations have no effect outside of the clipping area.
Parameters:
x - the x coordinate of the new clip rectangle.
y - the y coordinate of the new clip rectangle.
width - the width of the new clip rectangle.
height - the height of the new clip rectangle.
Since:
JDK1.1
See Also:
java.awt.Graphics.clipRect, java.awt.Graphics.setClip(Shape)

setColor

public void setColor(Color c)
Sets this graphics context's current color to the specified color. All subsequent graphics operations using this graphics context use this specified color.
Parameters:
c - the new rendering color.
See Also:
java.awt.Color, java.awt.Graphics.getColor

shear

public void shear(double shx,
                  double shy)
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   ]
 
Parameters:
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

transform

public void transform(AffineTransform Tx)
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.
Parameters:
Tx - the AffineTransform object to be composed with the current Transform
See Also:
AbstractGraphics2D, java.awt.geom.AffineTransform

translate

public void translate(double tx,
                      double ty)
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   ]
 
Parameters:
tx - the distance to translate along the x-axis
ty - the distance to translate along the y-axis

translate

public void translate(int x,
                      int y)
Translates the origin of the Graphics2D context to the point (xy) in the current coordinate system. Modifies the Graphics2D context so that its new origin corresponds to the point (xy) 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.
Since:
JDK1.0