Hi,
I may have found a bug in Java3D and have included a very simple test case.
The problem is this:
I create a buffered image then use the texture loader to get a texture (using the
BY_REFERENCE flag).
I then retrieve the BufferedImage from the ImageComponent2D and draw on it using
Java2D calls. Using one of the consructors of
the texture loader causes errors, another doesn't.
This works fine: TextureLoader texLoader = new TextureLoader(image, "RGBA",
TextureLoader.BY_REFERENCE);
This causes the error: TextureLoader texLoader = new TextureLoader(image, "RGBA",
TextureLoader.BY_REFERENCE, new
java.awt.Component() {});
When I use the 'bad' constructor the following happens:
When I do this a call to fillRect() that exceeds the bounds of the image works fine
(ie any drawing off the image is clipped
correctly) but a call to drawRect() with the same arguments fails (ie the drawing is
not clipped).
I may be using the constrcutor incorrectly but if this was the case then I would
expect consistent results with both drawRect()
and fillRect(). This is not causing me any problems as I am now using the constructor
that works but it looks like a bug.
Cheers,
Brad
___________________OUTPUT________________________
java.lang.ArrayIndexOutOfBoundsException: Coordinate out of bounds!
at
sun.awt.image.ByteInterleavedRaster.setDataElements(ByteInterleavedRaster.java:529)
at sun.java2d.loops.SolidPixelWriter.writePixel(GeneralRenderer.java:841)
at sun.java2d.loops.GeneralRenderer.doSetRect(GeneralRenderer.java:131)
at sun.java2d.loops.SetDrawRectANY.DrawRect(GeneralRenderer.java:662)
at sun.java2d.pipe.LoopPipe.drawRect(LoopPipe.java:48)
at sun.java2d.pipe.ValidatePipe.drawRect(ValidatePipe.java:40)
at sun.java2d.SunGraphics2D.drawRect(SunGraphics2D.java:2106)
at ClippingTest.drawOnImage(ClippingTest.java:34)
at ClippingTest.<init>(ClippingTest.java:22)
at ClippingTest.main(ClippingTest.java:40)
____________________TEST CLASS___________________
import javax.media.j3d.ImageComponent2D;
import javax.media.j3d.Texture;
import java.awt.image.*;
import java.awt.*;
import com.sun.j3d.utils.image.TextureLoader;
public class ClippingTest {
private int dimension = 512;
public ClippingTest() {
BufferedImage image = new BufferedImage(dimension, dimension,
BufferedImage.TYPE_4BYTE_ABGR);
drawOnImage(image);
//works with this
// TextureLoader texLoader = new TextureLoader(image, "RGBA",
TextureLoader.BY_REFERENCE);
//does not work with this
TextureLoader texLoader = new TextureLoader(image, "RGBA",
TextureLoader.BY_REFERENCE, new java.awt.Component() {});
Texture texture = texLoader.getTexture();
ImageComponent2D imageComponent = (ImageComponent2D)texture.getImage(0);
image = imageComponent.getImage();
drawOnImage(image);
}
private void drawOnImage(BufferedImage image) {
Graphics2D g = image.createGraphics();
g.setColor(new Color(1f, 0f, 0f, 0.5f));
g.fillRect(0, 0, dimension * 2, dimension * 2);
System.out.println("Fill rect greater than bounds ok.");
g.setColor(Color.blue);
g.drawRect(0, 0, dimension * 2, dimension * 2);
System.out.println("Draw Rect greater than bounds ok.");
}
public static void main(String[] args) {
new ClippingTest();
}
}
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