I'm going to do an update to the FAQ soon, with a new version of this code.
I'll announce the update here when it has been completed.
Steve
Kovalan Muniandy wrote:
> Dear Reader,
>
> Steve Pietrowicz writes about capturing still images in JPEG format (Java 3D
> FAQ):
> http://tintoy.ncsa.uiuc.edu/~srp/java3d/howto.html#capture
>
> However, I get an exception when I do it. Could someone give me a hint?
> Thanks,
>
> Kovalan
> Ps. The exception:
>
> Exception occurred during Canvas3D callback:
> java.lang.NullPointerException
> at
> javax.media.j3d.GraphicsContext3D.readRaster(GraphicsContext3D.java:1
> 068)
> at TurnCamera$CapturingCanvas.postSwap(TurnCamera.java:128)
> at javax.media.j3d.Renderer.run(Renderer.java:715)
>
> >> The code:
>
> public class CapturingCanvas extends Canvas3D
> {
> public CapturingCanvas() {
> super( null );
> }
> public void postSwap() {
> GraphicsContext3D ctx = getGraphicsContext3D();
> Raster ras = new Raster();
>
> ctx.readRaster(ras);
>
> // Now strip out the image info
> ImageComponent2D img_src = ras.getImage();
> DepthComponent depth = ras.getDepthComponent();
> java.awt.image.BufferedImage img = img_src.getImage();
>
> // write that to disk....
> System.out.println( "TODO: Insert write to file code." );
> }
> }
--
Steve Pietrowicz - [EMAIL PROTECTED] Project Manager - NCSA Java 3D Group
NCSA Portfolio 1.3 beta 1: http://havefun.ncsa.uiuc.edu/Java3D/portfolio/
New Loaders, turn your Canvas3D into a JPEG, new InputDevices and more!
Freely available for non-commercial use!
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