org.jdrawing.graphics
Class ArcOperation

java.lang.Object
  org.jdrawing.graphics.GraphicsOperation
      org.jdrawing.graphics.ArcOperation

All Implemented Interfaces:

DrawingElement

Direct Known Subclasses:

DrawArc, FillArc

public abstract class ArcOperation

extends GraphicsOperation

Base class for operations, which get arc as argument.

Constructor Summary

ArcOperation(int x, int y, int width, int height, int startAngle, int arcAngle)
Returns ArcOperation for a circular or elliptical arc covering the specified rectangle.

ArcOperation(int x, int y, int width, int height, int startAngle, int arcAngle, Style style)
Returns ArcOperation for a circular or elliptical arc covering the specified rectangle.

Method Summary

int	getArcAngle() Gets the angular extent of the arc, relative to the start angle.
int	getHeight() Gets the height of the arc.
int	getStartAngle() Gets the beginning angle of the arc.
int	getWidth() Gets the width of the arc.
int	getX() Gets the X coordinate of the upper-left corner of the arc.
int	getY() Gets the Y coordinate of the upper-left corner of the arc.
void	setArc(int x, int y, int width, int height, int startAngle, int arcAngle) Sets the attributes of the rounded rectangle.
void	setArcAngle(int arcAngle) Sets the angular extent of the arc, relative to the start angle.
void	setHeight(int height) Sets the height of the arc.
void	setStartAngle(int startAngle) Sets the beginning angle of the arc.
void	setWidth(int width) Sets the width of the arc.
void	setX(int x) Sets the X coordinate of the upper-left corner of the arc.
void	setY(int y) Sets the Y coordinate of the upper-left corner of the arc.

Methods inherited from class org.jdrawing.graphics.GraphicsOperation

contains, getBounds, getBounds2D, getPosition, getShapeOfOperation, getStyle, intersects, paint, paintOperation, setPosition, setStyle

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

ArcOperation

public ArcOperation(int x,
                    int y,
                    int width,
                    int height,
                    int startAngle,
                    int arcAngle)

Returns ArcOperation for 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 (x, y) 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.

y - the y coordinate of the upper-left corner of the arc.

width - the width of the arc.

height - the height of the arc.

startAngle - the beginning angle.

arcAngle - the angular extent of the arc, relative to the start angle.

ArcOperation

public ArcOperation(int x,
                    int y,
                    int width,
                    int height,
                    int startAngle,
                    int arcAngle,
                    Style style)

Returns ArcOperation for 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 (x, y) 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.

y - the y coordinate of the upper-left corner of the arc.

width - the width of the arc.

height - the height of the arc.

startAngle - the beginning angle.

arcAngle - the angular extent of the arc, relative to the start angle.

style - the style for this graphics operation

Method Detail

setX

public void setX(int x)

Sets the X coordinate of the upper-left corner of the arc.

Parameters:

x - the x coordinate of the upper-left corner of the arc.

getX

public int getX()

Gets the X coordinate of the upper-left corner of the arc.

Returns:

the x coordinate of the upper-left corner of the arc.

setY

public void setY(int y)

Sets the Y coordinate of the upper-left corner of the arc.

Parameters:

y - the y coordinate of the upper-left corner of the arc.

getY

public int getY()

Gets the Y coordinate of the upper-left corner of the arc.

Returns:

the y coordinate of the upper-left corner of the arc.

setWidth

public void setWidth(int width)

Sets the width of the arc.

Parameters:

width - the width of the arc

getWidth

public int getWidth()

Gets the width of the arc.

Returns:

the width of the arc

setHeight

public void setHeight(int height)

Sets the height of the arc.

Parameters:

height - the height of the arc

getHeight

public int getHeight()

Gets the height of the arc.

Returns:

the height of the arc

setStartAngle

public void setStartAngle(int startAngle)

Sets the beginning angle of the arc.

Parameters:

startAngle - the beginning angle

getStartAngle

public int getStartAngle()

Gets the beginning angle of the arc.

Returns:

the beginning angle

setArcAngle

public void setArcAngle(int arcAngle)

Sets the angular extent of the arc, relative to the start angle.

Parameters:

arcAngle - the angular extent of the arc, relative to the start angle

getArcAngle

public int getArcAngle()

Gets the angular extent of the arc, relative to the start angle.

Returns:

the angular extent of the arc, relative to the start angle

setArc

public void setArc(int x,
                   int y,
                   int width,
                   int height,
                   int startAngle,
                   int arcAngle)

Sets the attributes of the rounded rectangle.

Parameters:

x - the x coordinate of the upper-left corner of the arc.

y - the y coordinate of the upper-left corner of the arc.

width - the width of the arc.

height - the height of the arc.

startAngle - the beginning angle.

arcAngle - the angular extent of the arc, relative to the start angle.