Hi Yuri,
I can't reproduce the problem using the attach
test program based on your code snippet. Can you please
give it a try to see if it works in your
system ? If it works, please send us your test
program for us to investigate. You may also
try out Java3D v1.3 beta1.
Thanks.
- Kelvin
---------------
Java 3D Team
Sun Microsystems Inc.
>Delivered-To: [EMAIL PROTECTED]
>MIME-Version: 1.0
>Date: Wed, 6 Feb 2002 15:10:28 -0500
>From: Yuri Nikishkov <[EMAIL PROTECTED]>
>Subject: [JAVA3D] Full Scene Antialiasing
>To: [EMAIL PROTECTED]
>
>Hi all,
Did anybody try to use full scene antialiasing in Java3D? I use the
following code to render the antialiased scene in my view to the off-screen
buffer:
// Obtain graphics configuration
GraphicsConfigTemplate3D template = new GraphicsConfigTemplate3D();
GraphicsEnvironment env =
GraphicsEnvironment.getLocalGraphicsEnvironment();
GraphicsDevice device = env.getDefaultScreenDevice();
GraphicsConfiguration config =
device.getBestConfiguration(template);
// Create offscreen canvas
Canvas3D canvas = new Canvas3D(config, true);
mView.addCanvas3D(canvas);
// Set the offscreen to match the onscreen
Screen3D sOn = ((Canvas3D)screenCanvas).getScreen3D();
Screen3D sOff = canvas.getScreen3D();
sOff.setSize(sOn.getSize());
sOff.setPhysicalScreenWidth(sOn.getPhysicalScreenWidth());
sOff.setPhysicalScreenHeight(sOn.getPhysicalScreenHeight());
// Set offscreen buffer
BufferedImage image = new BufferedImage(width, height,
BufferedImage.TYPE_INT_RGB);
ImageComponent2D imComp = new
ImageComponent2D(ImageComponent.FORMAT_RGB, image, true, false);
imComp.setCapability(ImageComponent2D.ALLOW_IMAGE_READ);
canvas.setOffScreenBuffer(imComp);
// Antialiasing
if (canvas.getSceneAntialiasingAvailable())
mView.setSceneAntialiasingEnable(true);
// Render to offscreen buffer
mView.startView()
canvas.renderOffScreenBuffer();
mView.stopView();
Resulting picture demonstrates some effort to be antialiased but it is not
exactly what I expect it to be. Looks like the frame is jittered too far.
Can anybody provide any insight on what is wrong? I use Java3D 1.2.1_03.
Hardware should be irrelevant for the off-screen rendering.
Yuri.
<<antialias.jpg>>
/*
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* kind. ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND
* WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY,
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* EXCLUDED. SUN AND ITS LICENSORS SHALL NOT BE LIABLE FOR ANY DAMAGES
* SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING OR
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* EVEN IF SUN HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
*
* You acknowledge that Software is not designed,licensed or intended
* for use in the design, construction, operation or maintenance of
* any nuclear facility.
*/
import java.applet.*;
import java.awt.*;
import java.awt.event.*;
import java.awt.image.BufferedImage;
import com.sun.j3d.utils.applet.MainFrame;
import com.sun.j3d.utils.geometry.ColorCube;
import com.sun.j3d.utils.universe.*;
import javax.media.j3d.*;
import javax.vecmath.*;
public class AntialiasingBug extends Applet {
private SimpleUniverse u = null;
ImageComponent2D imComp;
public BranchGroup createSceneGraph() {
// Create the root of the branch graph
BranchGroup objRoot = new BranchGroup();
// Create the TransformGroup node and initialize it to the
// identity. Enable the TRANSFORM_WRITE capability so that
// our behavior code can modify it at run time. Add it to
// the root of the subgraph.
TransformGroup objTrans = new TransformGroup();
objTrans.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE);
objRoot.addChild(objTrans);
// Create a simple Shape3D node; add it to the scene graph.
objTrans.addChild(new ColorCube(0.4));
// Create a new Behavior object that will perform the
// desired operation on the specified transform and add
// it into the scene graph.
Transform3D yAxis = new Transform3D();
Alpha rotationAlpha = new Alpha(-1, 4000);
yAxis.rotX(0.5);
Transform3D xAxis = new Transform3D();
xAxis.rotY(0.5);
xAxis.mul(yAxis);
objTrans.setTransform(xAxis);
RotationInterpolator rotator =
new RotationInterpolator(rotationAlpha, objTrans, yAxis,
0.0f, (float) Math.PI*2.0f);
BoundingSphere bounds =
new BoundingSphere(new Point3d(0.0,0.0,0.0), 100.0);
rotator.setSchedulingBounds(bounds);
// objRoot.addChild(rotator);
// Have Java 3D perform optimizations on this scene graph.
objRoot.compile();
return objRoot;
}
public AntialiasingBug() {
initOffScreen();
}
public void paint(Graphics g) {
g.drawImage(imComp.getImage(), 0, 0, this);
}
public void initOffScreen() {
// Obtain graphics configuration
GraphicsConfigTemplate3D template = new GraphicsConfigTemplate3D();
GraphicsEnvironment env =
GraphicsEnvironment.getLocalGraphicsEnvironment();
GraphicsDevice device = env.getDefaultScreenDevice();
GraphicsConfiguration config =
device.getBestConfiguration(template);
// Create offscreen canvas
Canvas3D canvas = new Canvas3D(config, true);
// Create a simple scene and attach it to the virtual universe
BranchGroup scene = createSceneGraph();
u = new SimpleUniverse(canvas);
// This will move the ViewPlatform back a bit so the
// objects in the scene can be viewed.
u.getViewingPlatform().setNominalViewingTransform();
u.addBranchGraph(scene);
View mView = u.getViewer().getView();
// mView.addCanvas3D(canvas);
// Set the offscreen to match the onscreen
// Screen3D sOn = ((Canvas3D)screenCanvas).getScreen3D();
Screen3D sOff = canvas.getScreen3D();
// sOff.setSize(sOn.getSize());
sOff.setSize(new Dimension(512, 512));
sOff.setPhysicalScreenWidth(0.36124);
sOff.setPhysicalScreenHeight(0.28899555);
/*
sOff.setPhysicalScreenWidth(sOn.getPhysicalScreenWidth());
sOff.setPhysicalScreenHeight(sOn.getPhysicalScreenHeight());
*/
// Set offscreen buffer
BufferedImage image = new BufferedImage(512, 512,
BufferedImage.TYPE_INT_RGB);
imComp = new
ImageComponent2D(ImageComponent.FORMAT_RGB, image, true, false);
imComp.setCapability(ImageComponent2D.ALLOW_IMAGE_READ);
canvas.setOffScreenBuffer(imComp);
// Antialiasing
if (canvas.getSceneAntialiasingAvailable())
mView.setSceneAntialiasingEnable(true);
// Render to offscreen buffer
mView.startView();
canvas.renderOffScreenBuffer();
canvas.waitForOffScreenRendering();
mView.stopView();
}
public void destroy() {
u.removeAllLocales();
}
//
// The following allows AntialiasingBug to be run as an application
// as well as an applet
//
public static void main(String[] args) {
new MainFrame(new AntialiasingBug(), 512, 512);
}
}
