thanks to previous email from Don Casteel working from Mr. Kunszt's posted
class with my own small addition:
import com.mincom.util.resource.Resource;
import com.sun.j3d.utils.image.*;
import java.awt.print.*;
import java.awt.print.PrinterJob;
import java.awt.print.PrinterGraphics;
import java.awt.*;
import java.awt.image.BufferedImage;
import java.awt.Image;
import java.awt.image.ImageObserver;
import java.io.File;
import java.io.IOException;
import java.io.FileOutputStream;
import java.net.*;
import javax.media.j3d.*;
import javax.vecmath.*;
import javax.swing.JFileChooser;
import javax.swing.filechooser.*;
import java.awt.geom.AffineTransform;
import java.awt.image.BufferedImage;
import javax.swing.filechooser.*;
import com.sun.image.codec.jpeg.*;
/** Class PrintCaptureCanvas3D, using the instructions from the Java3D
FAQ pages on how to capture a still image in jpeg format.
A capture button would call a method that looks like
public static void captureImage(PrintCaptureCanvas3D c)
{
c.writeJPEG_ = true;
c.saveJPEG_ = true;
c.repaint();
};
A print button would call a method that looks like
public static void printJPGImage(PrintCaptureCanvas3D c)
{
c.writeJPEG_ = true;
c.saveJPEG_ = false;
c.repaint();
};
Peter Z. Kunszt
Johns Hopkins University
Dept of Physics and Astronomy
Baltimore MD
Working from Mr. Kunszt's posted class, the following enhancements were
added:
BufferedImage img; was made global to the class.
The image width was made dynamic using this.getWidth() & this.getHeight()
methods.
Printing capability was added (this is still buggy however)
Don Casteel 10/24/1999
[EMAIL PROTECTED]
and of course set to match our environment + specific need by myself
[EMAIL PROTECTED]
*/
public class PrintCaptureCanvas3D extends Canvas3D implements Printable,
ImageObserver
{
private class ExampleFileFilter extends FileFilter {
/**
* Creates a file filter that accepts the jpg file.
*
*
* @see #addExtension
*/
public ExampleFileFilter() {
}
/**
* Return true if this file should be shown
* @see #getExtension
* @see FileFilter#accepts
*/
public boolean accept(File f) {
if (f != null) {
if (f.isDirectory()) {
return true;
}
String extension = getExtension(f);
if (extension != null) {
return extension.equals("jpg");
}
}
return false;
}
/**
* Return the extension portion of the file's name .
*
* @see FileFilter#accept
*/
public String getExtension(File f) {
if(f != null) {
String filename = f.getName();
int i = filename.lastIndexOf('.');
if(i > 0 && i < filename.length() - 1) {
return filename.substring(i + 1).toLowerCase();
};
}
return null;
}
public String getDescription() {
return "JPEG Image Files (*.jpg)";
}
}
// The resource bundle used to store the siteview configuration items
// such as the map info et cetera.
public static final String SITE_VIEW_RESOURCES =
"com.mincom.works.location.LocationViewer";
public boolean swapCompleted = false;
public boolean writeJPEG_;
private int postSwapCount_;
public boolean saveJPEG_;
BufferedImage img;
public PrintCaptureCanvas3D(GraphicsConfiguration gc)
{
super(gc);
postSwapCount_ = 0;
}
public void addNotify()
{
super.addNotify();
};
public void postSwap()
{
if(writeJPEG_)
{
GraphicsContext3D ctx = getGraphicsContext3D();
// The raster components need all be set!
Raster ras = new Raster
(
new Point3f(-1.0f,-1.0f,-1.0f),
javax.media.j3d.Raster.RASTER_COLOR,
0,0,
this.getWidth(),this.getHeight(),
new ImageComponent2D
(
ImageComponent.FORMAT_RGB,
new BufferedImage
(
this.getWidth(),
this.getHeight(),
BufferedImage.TYPE_INT_RGB
)
),
null
);
ctx.readRaster(ras);
// Now strip out the image info
img = ras.getImage().getImage();
// write that to disk....
if(saveJPEG_) {
try {
JFileChooser chooser = new JFileChooser(".");
chooser.setDialogTitle(Resource.getString(SITE_VIEW_RESOURCES,
"snapshottitle"));
chooser.setSelectedFile(new
File("Capture"+postSwapCount_+".jpg"));
chooser.setFileFilter(new ExampleFileFilter());
chooser.setDialogType(JFileChooser.SAVE_DIALOG);
int returnVal = chooser.showOpenDialog(this);
FileOutputStream out;
if (returnVal == JFileChooser.APPROVE_OPTION) {
out = new
FileOutputStream(chooser.getSelectedFile());
} else
writeJPEG_ = false;
return;
}
JPEGImageEncoder encoder =
JPEGCodec.createJPEGEncoder(out);
JPEGEncodeParam param =
encoder.getDefaultJPEGEncodeParam(img);
param.setQuality(0.9f,false); // 90% qualith JPEG
encoder.setJPEGEncodeParam(param);
encoder.encode(img);
writeJPEG_ = false;
out.close();
}
catch ( IOException e ) {
Pkg.log.trace(0, e);
};
} else {
printMethod();
writeJPEG_ = false;
};
postSwapCount_++;
}
swapCompleted = true;
super.postSwap();
};
public int print(Graphics g, PageFormat pf, int pi)
throws PrinterException
{
if (pi >= 1)
{
return Printable.NO_SUCH_PAGE;
}
Graphics2D g2d = (Graphics2D)g;
g2d.translate(pf.getImageableX(), pf.getImageableY());
drawObject(g2d);
return Printable.PAGE_EXISTS;
};
public void drawObject(Graphics2D g2d)
{
try {
g2d.drawImage(img,new AffineTransform(), this);
}
catch (Exception ex) {
Pkg.log.trace(0, ex);
};
};
public void printMethod(){
PrinterJob printJob = PrinterJob.getPrinterJob();
PageFormat pageFormat = printJob.defaultPage();
pageFormat = printJob.validatePage(pageFormat);
printJob.setPrintable(this);
if (printJob.printDialog())
{
try {
printJob.print();
} catch (Exception ex) {
Pkg.log.trace(0, ex);
};
};
};
}
Olivier Fillon Minestar Project
[EMAIL PROTECTED] Mincom Limited
Ph.+61-7-3303-3344 61 Wyandra Street
Fax+61-7-3303-3232 Teneriffe Qld. 4005.
Australia
Company home page: http://www.mincom.com/
Personal home page: http://www.powerup.com.au/~fillon
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-----Original Message-----
From: Juan Miguel <[EMAIL PROTECTED]>
To: [EMAIL PROTECTED] <[EMAIL PROTECTED]>
Date: Friday, February 25, 2000 12:23 PM
Subject: [JAVA3D] Capturing the Canvas3D
>Hi everybody:
>
>I'd like to know how can I capture an image from a Canvas3D and store it in
>any format.
>Imagine that I have a frame along with its JPanel object, which contains a
>Canvas3D which displays a 3D cube, and I want to now how can I save the
>cube's image via programming, and write it either into a JPG file or into a
>GIF file
>
>Thanks for any help
>
>Juan Miguel
>
>===========================================================================
>To unsubscribe, send email to [EMAIL PROTECTED] and include in the body
>of the message "signoff JAVA3D-INTEREST". For general help, send email to
>[EMAIL PROTECTED] and include in the body of the message "help".
>
===========================================================================
To unsubscribe, send email to [EMAIL PROTECTED] and include in the body
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