Hi,
I am working on a 3D object viewer, in Java3D. One of the
functionalities I'd
like to implement is the capability to take a snapshot of the model, that is
copying the content of the Canvas3D to a JPEG file. I currently have a class
that extends Canvas3D, Viewer3D, that overrides the postSwap() method, in which
I do the processing. Unfortunately, the call to the readRaster(Raster) method
crashes opengl32.dll every time. Could you tell me what is wrong with my code?
I am using Java 2 and Java3D 1.1, all this running on Windows 95.
Thank you very much!
----------
/* Code */
// the raster that will contain the captured image
private Raster rasSnapshot;
// this is set to true when a snapshot must be taken
private boolean bTakeSnapshot = false;
public void takeSnapshot(String filename) {
bTakeSnapshot = true;
postSwap();
while (bTakeSnapshot)
Thread.currentThread().yield();
BufferedImage bi = rasSnapshot.getImage().getImage();
FileOutputStream fOut = null;
try {
fOut = new FileOutputStream(filename);
JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(fOut);
encoder.encode(bi);
} catch (ImageFormatException ife) {
} catch (IOException ioe) {
} finally {
if (fOut != null) {
try {
fOut.close();
} catch (IOException ioe2) {
}
}
}
}
public void postSwap() {
// original method
super.postSwap();
// takes a snapshot if requested
if (bTakeSnapshot) {
bTakeSnapshot = false;
Dimension d = getSize();
BufferedImage bImage = new BufferedImage(d.width, d.height,
BufferedImage.TYPE_INT_ARGB);
ImageComponent2D imgComp = new ImageComponent2D(
ImageComponent2D.FORMAT_RGB, bImage);
rasSnapshot = new Raster(new Point3f(), Raster.RASTER_COLOR,
0, 0, d.width, d.height, imgComp, null);
System.out.println("Before readRaster()!");
getGraphicsContext3D().readRaster(rasSnapshot);
System.out.println("After readRaster()!");
}
}
begin:vcard
n:Bilodeau;Guillaume
tel;work:(613) 991-5037
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org:National Research Council Canada;Visual Information Technology
adr:;;;;;;
version:2.1
email;internet:[EMAIL PROTECTED]
title:Software Engineer
x-mozilla-cpt:;-1
fn:Guillaume Bilodeau
end:vcard
