Try to get the NCSA Portofolio, it has a RecordableCanvas bound into it.
Steph wrote:
> Hi all!
>
> I am in desperate need of help. I have written an application that
> creates a 3D bar chart. Now I want to save that to a .tif file. I can
> create a rectangle in awt and save it to a .tif file. However, since
> Java3D doesn't use the paint(Graphics g) method (as far as I can tell),
> I can't figure it out. I am new at this so any help would be REALLY
> appreciated. I posted a few questions in the forum and have gotten NO
> responses. I know the API is new, so there is not many books
> available. My boss just bought "The Java 3D API Specification". Here
> is my code. It's very messy.
>
> public class Test
>
> {
> public static Frame displayFrame;
> protected String filename;
> public static Image saveImage;
> public static int Val1 = 0;
> public static int Val2 = 0;
> public static int Val3 = 0;
> public static int highestVal = 0;
> public static CapturingCanvas3D canvas3D;
> public static CapturingCanvas3D capIm;
> public static Image image;
> public static boolean bTakeShot;
> public static BufferedImage bi;
>
> public Test(int width, int height)
>
> {
> System.out.println("You are in new Test");
> BranchGroup scene = CreateLighter();
> SimpleUniverse simpleU = new SimpleUniverse(canvas3D);
> simpleU.getViewingPlatform().setNominalViewingTransform();
> simpleU.addBranchGraph(scene);
> captureImage(canvas3D);
>
> displayFrame = new Frame("Chart Application");
> //displayFrame.add(BorderLayout.CENTER, canvas3D);
> displayFrame.pack();
>
> }
>
> public static void main(String[] args)
>
> {
> new Test(500, 500);
> System.out.println("0");
> }
> public static BranchGroup CreateLighter()
> {
>
> System.out.println("1");
> BranchGroup objRoot = new BranchGroup();
> System.out.println("2");
> System.out.println("3");
> TransformGroup objTrans = new TransformGroup();
>
> BoundingSphere bounds = new BoundingSphere(new Point3d(0.0, 0.0, 0.0),
> 100.0);
>
> Appearance abar1 = new Appearance();
> Material mbar1 = new Material();
> AmbientLight light1 = new AmbientLight();
> light1.setInfluencingBounds(bounds);
> mbar1.setAmbientColor(1.0f, 0.0f, 0.0f);
> mbar1.setDiffuseColor(0.7f, 0.7f, 0.7f);
> mbar1.setLightingEnable(true);
> abar1.setMaterial(mbar1);
>
> Appearance abar2 = new Appearance();
> Material mbar2 = new Material();
> AmbientLight light2 = new AmbientLight();
> light2.setInfluencingBounds(bounds);
> mbar2.setAmbientColor(0.0f, 0.0f, 1.0f);
> mbar2.setDiffuseColor(0.7f, 0.7f, 0.7f);
> mbar2.setLightingEnable(true);
> abar2.setMaterial(mbar2);
>
> Appearance abar3 = new Appearance();
> Material mbar3 = new Material();
> AmbientLight light3 = new AmbientLight();
> light3.setInfluencingBounds(bounds);
> mbar3.setAmbientColor(0.0f, 1.0f, 0.0f);
> mbar3.setDiffuseColor(0.7f, 0.7f, 0.7f);
> mbar3.setLightingEnable(true);
> abar3.setMaterial(mbar3);
>
> Transform3D bar1mat = new Transform3D();
> Transform3D bar1mat2 = new Transform3D();
> Box boxObj1 = new Box(0.2f, 0.7f, 0.2f, abar1);
> //Shape3D shape = new Shape3D(raster);
> boxObj1.setAppearance(abar1);
> bar1mat.set(new Vector3d(-0.8, 0.4, -0.9));
> bar1mat2.set(new Vector3d(-0.8, 0.4, -0.9));
> TransformGroup maintrans1 = new TransformGroup();
> Transform3D rotate1 = new Transform3D();
> Transform3D tempRotate1 = new Transform3D();
> rotate1.rotX(Math.PI/4.0d);
> tempRotate1.rotY(Math.PI/3.0d);
> rotate1.mul(tempRotate1);
> TransformGroup objRotate1 = new TransformGroup(rotate1);
> objRotate1.addChild(boxObj1);
> maintrans1.addChild(light1);
> maintrans1.addChild(objRotate1);
> maintrans1.setTransform(bar1mat);
> maintrans1.setTransform(bar1mat2);
> objTrans.addChild(maintrans1);
>
> Transform3D bar2mat = new Transform3D();
> Transform3D bar2mat2 = new Transform3D();
> Box boxObj2 = new Box(0.2f, 0.3f, 0.2f, abar2);
> boxObj2.setAppearance(abar2);
> bar2mat.set(new Vector3d(-0.4, 0.0, -0.71));
> bar2mat2.set(new Vector3d(-0.4, 0.0, -0.71));
> TransformGroup maintrans2 = new TransformGroup();
> Transform3D rotate2 = new Transform3D();
> Transform3D tempRotate2 = new Transform3D();
> rotate2.rotX(Math.PI/4.0d);
> tempRotate2.rotY(Math.PI/3.0d);
> rotate2.mul(tempRotate2);
> TransformGroup objRotate2 = new TransformGroup(rotate2);
> objRotate2.addChild(boxObj2);
> maintrans2.addChild(light2);
> maintrans2.addChild(objRotate2);
> maintrans2.setTransform(bar2mat);
> maintrans2.setTransform(bar2mat2);
> objTrans.addChild(maintrans2);
>
> Transform3D bar3mat = new Transform3D();
> Transform3D bar3mat2 = new Transform3D();
> Box boxObj3 = new Box(0.2f, 0.4f, 0.2f, abar3);
> boxObj3.setAppearance(abar3);
> bar3mat.set(new Vector3d(-0.05, -0.05, -0.3));
> bar3mat2.set(new Vector3d(-0.05, -0.05, -0.3));
> TransformGroup maintrans3 = new TransformGroup();
> Transform3D rotate3 = new Transform3D();
> Transform3D tempRotate3 = new Transform3D();
> rotate3.rotX(Math.PI/4.0d);
> tempRotate3.rotY(Math.PI/3.0d);
> rotate3.mul(tempRotate3);
> TransformGroup objRotate3 = new TransformGroup(rotate3);
> objRotate3.addChild(boxObj3);
> maintrans3.addChild(objRotate3);
> maintrans3.addChild(light3);
> maintrans3.setTransform(bar3mat);
> maintrans3.setTransform(bar3mat2);
> objTrans.addChild(maintrans3);
>
> Color3f lightColor = new Color3f(1.0f, 1.0f, 1.0f);
> Point3f lightDirection = new Point3f(2.0f, 0.0f, 0.5f);
> PointLight light = new PointLight();
> light.setPosition(lightDirection);
> light.setColor(lightColor);
> light.setInfluencingBounds(bounds);
> Background backg = new Background(1.0f, 1.0f, 1.0f);
> backg.setApplicationBounds(bounds);
> objRoot.addChild(backg);
> objRoot.addChild(light);
> objRoot.addChild(objTrans);
> System.out.println("4");
> System.out.println("5");
> objRoot.compile();
> return objRoot;
> }
>
> public static void captureImage(CapturingCanvas3D MyCanvas3D)
> {
>
> System.out.println("you are here 1 ");
> MyCanvas3D.writeTIF_ = true;
> System.out.println("you are here 2");
> MyCanvas3D.repaint();
> System.out.println("You are here 3");
>
> }
>
> }
>
> class CapturingCanvas3D extends Canvas3D
> {
> public static boolean writeTIF_;
> private int postSwapCount_;
> public GraphicsContext3D ctx;
> public Raster snapshot;
>
> public CapturingCanvas3D(GraphicsConfiguration gc)
> {
> super(gc);
> postSwapCount_ = 0;
> System.out.println("You are in CapturingCanvas3D");
> }
>
> public void postSwap()
> {
> System.out.println("You are in postSwap");
> if(writeTIF_) {
> System.out.println("Writing TIF");
> ctx = getGraphicsContext3D();
>
> snapshot = new Raster(
> new Point3f(-1.0f,-1.0f,-1.0f),
> Raster.RASTER_COLOR,
> 0,0,
> 512,512,
> new ImageComponent2D(
> ImageComponent.FORMAT_RGB,
> new BufferedImage(512,512,
>
> BufferedImage.TYPE_INT_RGB)),
> null);
>
> ctx.readRaster(snapshot);
>
> BufferedImage saveImage = snapshot.getImage().getImage();
>
> System.out.println("The value of saveImage is "+saveImage);
>
> String theFile = "C:\\jdk1.2.2\\picture.tif";
> try
> { System.out.println("6");
> RenderedOp ri = JAI.create("awtimage", saveImage);
> System.out.println("7");
> FileOutputStream stream = new FileOutputStream(theFile);
> //JAI.create("encode", ri, stream, null);
> JAI.create("filestore", ri, theFile, null);
> System.out.println("You are past save");
> }
> catch (Exception e)
> {
> System.out.println("Picture save failed: " +
> e.getMessage());
> }
>
> postSwapCount_++;
> }
>
> else
> {
> System.out.println("Failure writing file");
> }
> }
>
> /*public void postRender()
> {
> ctx.readRaster(snapshot);
> }*/
>
> }
>
> One of my main questions is: When is postSwap called?
>
> I get my NullPointerException at: MyCanvas3D.repaint();
>
> Thanks so much in advance!
> Stephanie
> [EMAIL PROTECTED]
>
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--
Best regards,
Dan Todor
---
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