Thanks Sergey, but I get the exact same result.
Ken Causey
ineffable
At 09:11 AM 6/28/00 +0200, you wrote:
>Ken,
>
>try,
>
>Toolkit tool=Toolkit.getDefaultToolkit();
>Image temp = new
>java.awt.image.BufferedImage(1,1,java.awt.image.BufferedImage.TYPE_INT_ARGB);
>Cursor cursor=tool.createCustomCursor(temp,new Point(0,0),"Blank");
>
>this works in my Java3D app
>
>Sergey
>
>
>
>
>
>
>Ken Causey <[EMAIL PROTECTED]> on 27/06/2000 06:16:52 PM
>
>Please respond to Discussion list for Java 3D API
<[EMAIL PROTECTED]>
>
>To: [EMAIL PROTECTED]
>cc: (bcc: Sergei Erofeev/Nemetschek_BG)
>
>Subject: [JAVA3D] Custom cursors with Java3D, help.
>
>
>
>
>Has anyone worked with custom cursors in a Java3D app? I'm having some
>problems
>getting it to work. My goal is to make the mouse cursor disappear. I
have an
>example shown in the first fragment below that works fine
>(cursortest.java). In
>my Java3D app though I get
>
>java.lang.NullPointerException
> at sun.awt.CustomCursor.<init>(CustomCursor.java:40)
> at sun.awt.windows.WCustomCursor.<init>(WCustomCursor.java:30)
> at sun.awt.windows.WToolkit.createCustomCursor(WToolkit.java:618)
> at PlatNavigatorBehavior.<init>(PlatNavigatorBehavior.java:86)
> at LandGen.createSceneGraph(LandGen.java:77)
> at LandGen.<init>(LandGen.java:39)
> at LandGen.main(LandGen.java:23)
>
>The line PlatNavigatorBehavior.java:86 is marked with >>>> below. I would
>appreciate any help that I can get.
>
>Ken Causey
>ineffable
>
>--------------------------------------
>This works:
>--------------------------------------
>
>// Fragments for cursortest.java
>
>public class cursortest extends Frame {
>
> public cursortest(){
> super("Cursor Test");
> this.setSize(200,200);
> show();
> Toolkit t = this.getToolkit();
> Image temp = this.createImage(32,32);
> blankCursor = t.createCustomCursor(temp,new Point(0,0),new
>String("Blank"));
> }
>--------------------------------------
>
>
>--------------------------------------
>This doesn't:
>--------------------------------------
>
>// Fragments from LandGen.java
>
>public class LandGen extends Frame {
>
> public LandGen() {
> setLayout(new BorderLayout());
>
> graphicsConfig = SimpleUniverse.getPreferredConfiguration();
> Canvas3D canvas3d = new Canvas3D(graphicsConfig);
> add("Center", canvas3d);
>
> SimpleUniverse su = new SimpleUniverse(canvas3d);
>
> // This will move the ViewPlatform back a bit so the
> // objects in the scene can be viewed.
> su.getViewingPlatform().setNominalViewingTransform();
>
> BranchGroup scene = createSceneGraph(su);
>
> su.addBranchGraph(scene);
> }
>
> public BranchGroup createSceneGraph(SimpleUniverse su){
> TransformGroup vpTrans = null;
> BoundingSphere navBounds = null;
>
> vpTrans = su.getViewingPlatform().getViewPlatformTransform();
>
> BranchGroup objRoot = new BranchGroup();
>
> objRoot.addChild(new ColorCube(0.4));
>
> navBounds = new BoundingSphere(new Point3d(), 1000.0);
>
> PlatNavigatorBehavior navBehavior = new
>PlatNavigatorBehavior(vpTrans,graphicsConfig,this);
> navBehavior.setSchedulingBounds(navBounds);
> objRoot.addChild(navBehavior);
>
> // Let Java 3D perform optimizations on this scene graph.
> objRoot.compile();
>
> return objRoot;
> }
>
>// Fragments from PlatNavigatorBehavior.java
>
>public class PlatNavigatorBehavior extends Behavior {
>
> public PlatNavigatorBehavior(TransformGroup platform,
>GraphicsConfiguration gc, Frame frame) throws NoRobotCreatedException {
> mainFrame = frame;
> Toolkit t = mainFrame.getToolkit();
> Dimension dim = new Dimension();
> dim = t.getBestCursorSize(0,0);
> System.out.println("getBestCursorSize returned ("+dim.width+",
>"+dim.height+")");
> Image temp = mainFrame.createImage(dim.width,dim.height);
>>>>> blankCursor = t.createCustomCursor(temp,new Point(0,0),new
>String("Blank"));
> pnav = new PlatNavigator(platform);
> }
>------------------------------
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