Hi Mariusz,
It may not be a problem with having multiple canvases.
We had a similar issue with our canvas. This code seems to have fixed the
problem. When you create your Canvas3D, over-ride your paint method like
this:
GraphicsConfiguration gc = getGraphicsConfig();
canvas3d = new Canvas3D(gc) {
public void paint(Graphics g) {
super.paint(g);
Toolkit.getDefaultToolkit().sync();
} // paint()
}; // Canvas3D
Hopefully that will solve the problem for you.
George
----- Original Message -----
From: "ZACZEK, MARIUSZ P. (JSC-DM) (NASA)" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Tuesday, November 19, 2002 8:17 AM
Subject: Re: [JAVA3D] extending Canvas3D
> Sorry..I have to take it all back...I double checked my code and I must
have
> been thinking about something else or I was just too stupid to double
check
> correctly...you guess which it was :)
>
> Anyway, I noticed that the definite reason for the "refresh" issue is that
> fact that I have multiple Canvas3D windows (I have 4). Does anyone have
any
> example code of using a VirtualUniverse (not SimpleUniverse) too do at
least
> 2 Canvas3D windows together? I think I'm doing it correctly but who
> knows...I did notice that having just 2 windows caused a problem so having
4
> causes an even bigger problem....and so example code would be great help.
> This is what I do for making my Canvas3d objects:
>
> /////////////////////////////////////////////////////////////////////
>
> // 1 - Create Canvas3D object.
> Canvas3D canvas3D = new Canvas3D
> SimpleUniverse.getPreferredConfiguration());
> Canvas3D second_canvas3D = new
> Canvas3D(SimpleUniverse.getPreferredConfiguration());
> Canvas3D third_canvas3D = new
> Canvas3D(SimpleUniverse.getPreferredConfiguration());
> Canvas3D fourth_canvas3D = new Canvas3D
> SimpleUniverse.getPreferredConfiguration());
>
> canvas3D.setDoubleBufferEnable(true);
> second_canvas3D.setDoubleBufferEnable(true);
> third_canvas3D.setDoubleBufferEnable(true);
> fourth_canvas3D.setDoubleBufferEnable(true);
>
> // 2 - Create a VirtualUniverse object.
> VirtualUniverse universe = new VirtualUniverse();
>
> // 3 - Create a Locale object, attaching it to the VirtualUniverse
> object.
> Locale locale = new Locale(universe);
>
> // 4 - Create a view branch graph.
> // a - create a View object.
> View view = new View();
> View view2 = new View();
> View view3 = new View();
> View view4 = new View();
>
> // b - create a ViewPlatform object.
> viewplatform = new ViewPlatform();
> viewplatform2 = new ViewPlatform();
> viewplatform3 = new ViewPlatform();
> viewplatform4 = new ViewPlatform();
>
> // c - Create a PhysicalBody object.
> PhysicalBody physicalbody = new PhysicalBody();
> PhysicalBody physicalbody2 = new PhysicalBody();
> PhysicalBody physicalbody3 = new PhysicalBody();
> PhysicalBody physicalbody4 = new PhysicalBody();
>
> // d - create a PhysicalEnvironment object.
> PhysicalEnvironment physicalenvironment = new PhysicalEnvironment();
> PhysicalEnvironment physicalenvironment2 = new
PhysicalEnvironment();
> PhysicalEnvironment physicalenvironment3 = new
PhysicalEnvironment();
> PhysicalEnvironment physicalenvironment4 = new
PhysicalEnvironment();
>
>
> // 5 - Contruct content branch graph(s)
> BranchGroup scene = new BranchGroup();
>
> // Draw the stuff in the scene
> scene = createSceneGraph();
>
> // e - attach objects to View object.
> view.attachViewPlatform(viewplatform);
> view.setPhysicalBody(physicalbody);
> view.setPhysicalEnvironment(physicalenvironment);
> view.addCanvas3D(canvas3D);
>
> view2.attachViewPlatform(viewplatform2);
> view2.setPhysicalBody(physicalbody2);
> view2.setPhysicalEnvironment(physicalenvironment2);
> view2.addCanvas3D(second_canvas3D);
>
> view3.attachViewPlatform(viewplatform3);
> view3.setPhysicalBody(physicalbody3);
> view3.setPhysicalEnvironment(physicalenvironment3);
> view3.addCanvas3D(third_canvas3D);
>
> view4.attachViewPlatform(viewplatform4);
> view4.setPhysicalBody(physicalbody4);
> view4.setPhysicalEnvironment(physicalenvironment4);
> view4.addCanvas3D(fourth_canvas3D);
>
> // Set the viewplatform to the scene
> scene.addChild(viewplatform);
>
> // Set the view clip planes
> view.setBackClipDistance( 3000.0 );
> view.setFrontClipDistance( 0.001 );
> view2.setBackClipDistance( 300000.0 );
> view2.setFrontClipDistance( 0.1 );
> view3.setBackClipDistance( 300000.0 );
> view3.setFrontClipDistance( 0.1 );
> view4.setBackClipDistance( 3000.0 );
> view4.setFrontClipDistance( 0.001 );
>
> // 6 - Compile branch graph(s)
> // doing in scene..
>
> // 7 - Insert subgraphs into the Locale
> locale.addBranchGraph(scene);
>
>
>
> //
> // FINAL - add the canvases to the main panel so that the original
> // canvas is in the biggest window, and the other three
canvases
> // are in 3 side windows.
> this.setLayout(new BorderLayout());
>
> JPanel mainpanel = new JPanel(new BorderLayout());
> JPanel viewpanel2 = new JPanel(new BorderLayout());
>
> mainpanel.add("Center", canvas3D);
> mainpanel.setBorder(BorderFactory.createEtchedBorder());
>
> viewpanel2.setPreferredSize(new Dimension(300,400));
> viewpanel2.setLayout(new GridLayout(3,0));
> viewpanel2.add(second_canvas3D);
> viewpanel2.add(third_canvas3D);
> viewpanel2.add(fourth_canvas3D);
>
> this.add(mainpanel, BorderLayout.CENTER);
>
> this.add(viewpanel2,BorderLayout.EAST);
>
>
>
>
> /////////////////////////////////////////////////////////////////////
>
>
>
>
>
>
>
>
>
>
> Mario
>
>
>
>
>
> -----Original Message-----
> From: ZACZEK, MARIUSZ P. (JSC-DM) (NASA)
> To: [EMAIL PROTECTED]
> Sent: 11/17/2002 5:57 PM
> Subject: [JAVA3D] extending Canvas3D
>
> I'm having trouble with extending a Canvas3d...I've attached the code
> where
> I
> extend the Canvas3D...I removed all my preRender() postSwap(), etc code
> and
> I
> get the same effect as with having just the code below. Basically what
> happens is that my Canvas3D and SWING seems to have problems ONLY if I
> extend the
> Canvas3D as I do below....I've attached a picture to show you the
> effect.
> This
> effect is noticable if I move the window off screen and bring it back.
> The
> SWING
> portion does not redraw for a few seconds (typically 5-10) ... on
> another
> computer
> I had a "paint smudge effect" instead of a simple white space as I show
> in
> this picture.
> Basically the same thing happens but instead of being white space the
> swing
> side looks
> like someone smudged it up...(hope that makes sense).
>
> One thing though, if I simply use a Canvas3D (i.e. canvas3D = new
> Canvas3D(Simple....)
> I have absolutely NO problems....NONE. Refreshes right away without any
> issue.
> Only if I try to extend the Canvas3D do I have problems. Also, the
> Canvas
> actually is
> also unusable for the 5-10 seconds because when I move the window around
> I
> can't
> move anything in the canvas around.
>
> Does anyone have any suggestions??? Am I missing something when I
> declare
> the SpecialCanvas
> and extend the Canvas3D???
>
> I'm trying to use this extended canvas so I can overwrite the preRender,
> postSwap, etc
> routines for doing Overlays....they work great if I don't move the
> window
> around
> but If I move it then it gets screwed up...also, it does NOT get
> affected if
> I open
> a window on top of my Java Program...you know, if I move Explorer or
> Netscape over
> on top of the window it still is ok...only has problems when I move the
> window itself.
>
> Please give me all of your suggestions....
>
> I'm using the latest Java3d api, but I believe I'm using the Java 2D
> 1.3...did not upgrade
> to the new one because I had problems.
>
> Thanks,
>
> Mario
>
> ////////////////////////////////////////////////////////////////////////
> ////
> ////
> canvas3D = new
> SpecialCanvas3D(SimpleUniverse.getPreferredConfiguration());
>
> ////////////////////////////////////////////////////////////////////////
> ////
> ////
> private class SpecialCanvas3D extends Canvas3D {
>
> private J3DGraphics2D graphics2D;
>
> public SpecialCanvas3D(GraphicsConfiguration graphicsConfiguration)
> {
> super(graphicsConfiguration);
> }
>
> public SpecialCanvas3D(GraphicsConfiguration graphicsConfiguration,
> boolean offScreen) {
> super(graphicsConfiguration, offScreen);
> }
>
> }
> ////////////////////////////////////////////////////////////////////////
> ////
> ////
>
>
> Mario
>
> Mariusz Zaczek
> NASA - Johnson Space Center
> Automated Vehicles and Orbit Analysis / DM35
> Flight Design and Dynamics Division
> Mission Operations Directorate
> Bldg: 30A Room: 3048B
>
> Disclaimer: "The opinions, observations and comments expressed in my
> email
> are strictly my own and do not necessarily reflect
> those
> of NASA."
>
> <<test.jpg>>
>
>
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