org.eclipse.gef.geometry.convert.awt

Class Geometry2AWT

java.lang.Object

org.eclipse.gef.geometry.convert.awt.Geometry2AWT

public class Geometry2AWT
extends Object

Utility class to support conversions between GEF's geometry API and AWT Java2D's geometry API.

Method Summary

Modifier and Type	Method and Description
static AffineTransform	toAWTAffineTransform(AffineTransform t) Converts a GEF AffineTransform into an AWT AffineTransform.
static Line2D.Double	toAWTLine(Line l) Converts a GEF Line into an AWT Line2D.
static Path2D.Double	toAWTPath(Path p) Converts a Path into an equivalent AWT Path2D.
static Point2D.Double	toAWTPoint(Point p) Converts a GEF Point into an AWT Point2D with double precision (Point2D.Double).
static Point2D.Double[]	toAWTPoints(Point[] pts) Converts a given array of GEF Points into an array of AWT Point2Ds with double precision ( Point2D.Double).
static Rectangle2D.Double	toAWTRectangle(Rectangle r) Converts a GEF Rectangle into an AWT Rectangle2D.
static RoundRectangle2D.Double	toAWTRoundRectangle(RoundedRectangle r) Converts a GEF RoundedRectangle into an AWT RoundRectangle2D.

Methods inherited from class java.lang.Object

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

Method Detail

toAWTAffineTransform

public static AffineTransform toAWTAffineTransform(AffineTransform t)

Converts a GEF AffineTransform into an AWT AffineTransform.

Parameters:

t - the AffineTransform to transform

Returns:

a new AffineTransform representing an identical transformation

toAWTLine

public static Line2D.Double toAWTLine(Line l)

Converts a GEF Line into an AWT Line2D.

Parameters:

l - the Line to transform

Returns:

a new Line2D, which is constructed by using the start ( BezierCurve.getP1()) and end (BezierCurve.getP2()) Points of the passed-in Line

toAWTPath

public static Path2D.Double toAWTPath(Path p)

Converts a Path into an equivalent AWT Path2D.

Parameters:

p - the Path to convert

Returns:

a new PathIterator representing the same path

toAWTPoint

public static final Point2D.Double toAWTPoint(Point p)

Converts a GEF Point into an AWT Point2D with double precision (Point2D.Double).

Parameters:

p - the Point to convert

Returns:

a new Point2D with double precision ( Point2D.Double), which is constructed using the x and y coordinates of the provided Point

toAWTPoints

public static Point2D.Double[] toAWTPoints(Point[] pts)

Converts a given array of GEF Points into an array of AWT Point2Ds with double precision ( Point2D.Double).

Parameters:

pts - the array of Points to convert

Returns:

an array of new Point2Ds with double precision ( Point2D.Double), which are constructed using the x and y coordinates of the provided Points

toAWTRectangle

public static final Rectangle2D.Double toAWTRectangle(Rectangle r)

Converts a GEF Rectangle into an AWT Rectangle2D. Note that the new Rectangle2D is simply constructed by using the values of the passed-in Rectangle, not compensating the fact that the width and height of a rectangle are interpreted differently in Java2D and GEF.

In Java2D, the width and height of a Rectangle2D are oversized by exactly 1, i.e. the right and bottom edges of a Rectangle2D are not regarded to belong to the visual object.

If you wish to retain this interpretation, you have to modify the passed-in Rectangle object as follows:
rectangle2d = Geometry2AWT.toAWTRectangle(rectangle.getExpanded(0, 0, 1, 1));
(see also AbstractRectangleBasedGeometry.getExpanded(double, double, double, double))

Parameters:

r - the Rectangle to convert

Returns:

a new Rectangle2D, which is constructed using the x, y, width, and height values of the passed-in Rectangle.

toAWTRoundRectangle

public static RoundRectangle2D.Double toAWTRoundRectangle(RoundedRectangle r)

Converts a GEF RoundedRectangle into an AWT RoundRectangle2D. Note that the new RoundRectangle2D is simply constructed by using the values of the passed in RoundedRectangle, not compensating the fact that the width and height of a rectangle are interpreted differently in Java2D and GEF.

In Java2D, the width and height of a RoundRectangle2D are oversized by exactly 1, i.e. the right and bottom edges of a RoundRectangle2D are not regarded to belong to the visual object.

If you wish to retain this interpretation, you have to modify the passed-in RoundedRectangle object as follows:
roundRectangle2d = Geometry2AWT.toAWTRoundRectangle(roundedRectangle.getExpanded(0, 0, 1, 1));
(see also AbstractRectangleBasedGeometry.getExpanded(double, double, double, double))

Parameters:

r - the RoundedRectangle to convert

Returns:

a new RoundRectangle2D, which is constructed using the x, y, width, height, arcWidth, and arcHeight values of the passed in RoundedRectangle