Re: [JAVA3D] Performance in Collecting one buffered Image of the canvas 3d

[Auguste Genovesio]

actually this is the same for ImageComponent and Raster so the only
thing wich should stay - INSIDE - the method should be
SendImage(ctx.readRaster(ras));



the rest is OUTSIDE, once for all.

tiagoscalheiros wrote:

Hi,

I have rewrited the postswap() of a canvas 3d to collect a
bufferedImage of the scenario and then sent it to another
aplication.
The program is working but im having a problem with the
performance:
I discovered that the method readRaster(Raster r) from
graphicsContext3d takes 200ms in Suse Linux 1,8Ghz  to
retrieve the raster image and that is to slow for the
application.
I would like to know if someone knows why these method is so
slow, if i cann make it faster or if someone knows a better
and fast way to get a bufferedImage of one canvas 3d?
   public void postSwap()
   {
       GraphicsContext3D ctx = getGraphicsContext3D();
       Rectangle rect = this.getBounds();

       BufferedImage img = new BufferedImage
(rect.width,rect.height,
BufferedImage.TYPE_INT_RGB);

       ImageComponent2D comp =
           new ImageComponent2D(ImageComponent.FORMAT_RGB,
img, true, false);
       Raster ras = new Raster(new Point3f(-1.0f,-1.0f,-
1.0f),
                               Raster.RASTER_COLOR,
                               0,
                               0,
                               rect.width,
                               rect.height,
                               comp,
                               null);
       ctx.readRaster(ras);

       // Now strip out the image info

       BufferedImage output_img = ras.getImage().getImage();

       SendImage(output_img);

   }



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--
A. Genovesio
Quantitative Image Analysis Group
Institut Pasteur
25, rue du Docteur Roux
75724 Paris Cedex 15
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