Hi Pieter,
this is a short code fragment, that creates a texture object from an
image...
be aware, the image dimensions must be power of 2...
------------------------------------------------------------------------------------
//....
Image img = Toolkit.getDefaultToolkit().getImage(url);
PixelGrabber grabber = new PixelGrabber(img, 0, 0, -1, -1, true);
try {
grabber.grabPixels(timeout);
}catch(InterruptedException e){return null;}
if((grabber.getStatus() & ImageObserver.ALLBITS) != 0)
{
int w = grabber.getWidth();
int h = grabber.getHeight();
int[] pixels = (int[])grabber.getPixels();
BufferedImage bi = new BufferedImage(w, h,
BufferedImage.TYPE_INT_RGB);
bi.setRGB(0, 0, w, h, pixels, 0, w);
Texture tx = new Texture2D(Texture.BASE_LEVEL, Texture.RGB, w, h);
tx.setImage(0, new ImageComponent2D(ImageComponent.FORMAT_RGB, bi));
tx.setMagFilter(Texture.BASE_LEVEL_LINEAR);
tx.setMinFilter(Texture.BASE_LEVEL_LINEAR);
tx.setBoundaryModeS(Texture.WRAP); //default
tx.setBoundaryModeT(Texture.WRAP); //default
tx.setEnable(true);
return tx;
}
//....
----------------------------------------------------------------------------------
good luck :-)
gernot
[EMAIL PROTECTED]
pieter
<pieterdegrote@YAHOO To: [EMAIL PROTECTED]
.COM> cc:
Sent by: Discussion Subject: [JAVA3D] make a Texture
from an Image-object
list for Java 3D API
<JAVA3D-INTEREST@JAV
A.SUN.COM>
17.03.00 15:15
Please respond to
Discussion list for
Java 3D API
Thanks for your reaction!
But I don't see how I can use it.
Maybe my question was a bit confusing.
But I have an actual instance of the Image2D class.
And I want to create an instance of a subclass of Texture, using that
Image2D-object.
The code you sent, creates a BufferedImage-object (and with that, a
Texture), using an image-file.
But what is JAI? (yeah, sorry, I'm new to this mailinglist...)
And has PlanarImage something to do with JAI? Because I can't find a
PlanarImage class.
Can I use PlanarImage (or JAI) to create a BufferedImage using an =
instance
of Image2D?
all help is welcome!
Thanks.
Pieter Van Raemdonck
Katholieke Universiteit Leuven, Belgium.
----- Original Message -----
From: Jacob Nikom <[EMAIL PROTECTED]>
To: Discussion list for Java 3D API <[EMAIL PROTECTED]>;
<[EMAIL PROTECTED]>
Sent: Friday, March 17, 2000 1:09 AM
Subject: Re: [JAVA3D] [java3d] make Texture from Image
> Look at
> http://java.sun.com/products/java-media/3D/collateral/
>
> Here is the code. I used JAI for downloading .png images
>
> Jacob Nikom
>
> file://=3D=3D=3D=3D=3Dbeginning of the file SphereTextureApp =
=3D=3D=3D=3D=3D=3D=3D=3D=3D
> import javax.media.jai.*;
>
> import java.awt.*;
> import java.awt.event.*;
> import javax.swing.*;
>
> import javax.media.j3d.*;
> import javax.vecmath.*;
> import java.awt.image.*;
>
> import com.sun.j3d.utils.universe.*;
>
> import com.sun.j3d.utils.geometry.*;
> import com.sun.j3d.utils.image.TextureLoader;
>
> import com.sun.j3d.utils.behaviors.mouse.MouseRotate;
> import com.sun.j3d.utils.behaviors.mouse.MouseZoom;
> import com.sun.j3d.utils.behaviors.mouse.MouseTranslate;
>
> // SphereTextureApp creates a single plane with texture mapping.
> public class SphereTextureApp extends JPanel
> {
> public SphereTextureApp (BufferedImage bufferedImage)
> {
> Canvas3D canvas =3D new Canvas3D(null);
>
> setLayout(new BorderLayout());
> add("Center", canvas);
>
> BranchGroup scene =3D createSceneGraph(bufferedImage);
>
> SimpleUniverse su =3D new SimpleUniverse(canvas);
>
> // This will move the ViewPlatform back a bit so the
> // objects in the scene can be viewed.
> su.getViewingPlatform().setNominalViewingTransform();
>
> su.addBranchGraph(scene);
> }
>
> public BranchGroup createSceneGraph(BufferedImage bufferedImage)
> {
> BranchGroup objRoot =3D new BranchGroup();
> Transform3D transform =3D new Transform3D();
> Appearance appear =3D new Appearance();
>
> // Create 3D transformation variables(internally a matrix)
> Transform3D revXY =3D new Transform3D();
> Transform3D revY =3D new Transform3D();
> Transform3D movX =3D new Transform3D();
>
> // Set Transformations
> movX.set(new Vector3d(-0.5d, 0.0d, 0.0d));
> revXY.rotX(Math.PI/6.0);
> revY.rotY(Math.PI/6.0);
>
> // Put the final result into the same matrix movX
> revXY.mul(revY);
> movX.mul(revXY);
>
> // Create a Transform Group object
> // TransformGroup objTrans =3D new TransformGroup(movX);
> TransformGroup objTrans =3D new TransformGroup();
> objTrans.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE);
> objTrans.setCapability(TransformGroup.ALLOW_TRANSFORM_READ);
>
> TextureLoader loader =3D new TextureLoader(bufferedImage);
> ImageComponent2D imageTexture =3D loader.getImage();
>
> // can't use parameterless constuctor
> Texture2D texture =3D new Texture2D(
> Texture.BASE_LEVEL,
> Texture.RGBA,
> imageTexture.getWidth(),
> imageTexture.getHeight()
> );
>
> texture.setImage(0, imageTexture);
>
> appear.setTexture(texture);
>
> appear.setTransparencyAttributes(
> new TransparencyAttributes(TransparencyAttributes.FASTEST,
> 0.1f));
>
> // Create Geometry
> Sphere sphere =3D new Sphere(1.0f, =
Primitive.GENERATE_TEXTURE_COORDS,
> appear);
> QuadArray plane =3D createPlane(); // initialize QuadArray object
>
> // Shape3D planeObj =3D new Shape3D(plane, appear);
> // Shape3D sphereObj =3D new Shape3D(sphere, appear);
>
> // Key point - add the geometry not to the scene
> // but to the transformation object!
> objTrans.addChild(sphere);
>
> // add Transform group object to the Branch group
> objRoot.addChild(objTrans);
>
> BoundingSphere bounds =3D
> new BoundingSphere(new Point3d(0.0,0.0,0.0), 100.0);
>
> // Create the rotate behavior node
> MouseRotate behavior1 =3D new MouseRotate(objTrans);
> objTrans.addChild(behavior1);
> behavior1.setSchedulingBounds(bounds);
>
> // Create the zoom behavior node
> MouseZoom behavior2 =3D new MouseZoom(objTrans);
> objTrans.addChild(behavior2);
> behavior2.setSchedulingBounds(bounds);
>
> // Create the translate behavior node
> MouseTranslate behavior3 =3D new MouseTranslate(objTrans);
> objTrans.addChild(behavior3);
> behavior3.setSchedulingBounds(bounds);
>
> Background background =3D new Background();
> background.setColor(0.0f, 0.0f, 0.5f);
> background.setApplicationBounds(new BoundingSphere());
> objRoot.addChild(background);
>
> return objRoot;
> }
>
> public QuadArray createPlane()
> {
> QuadArray plane =3D
> new QuadArray(4, GeometryArray.COORDINATES |
> GeometryArray.TEXTURE_COORDINATE_2);
>
> Point3f p =3D new Point3f(-1.0f, 1.0f, 0.0f);
> plane.setCoordinate(0, p);
> p.set(-1.0f, -1.0f, 0.0f);
> plane.setCoordinate(1, p);
> p.set(1.0f, -1.0f, 0.0f);
> plane.setCoordinate(2, p);
> p.set(1.0f, 1.0f, 0.0f);
> plane.setCoordinate(3, p);
>
> Point2f q =3D new Point2f( 0.0f, 1.0f);
> plane.setTextureCoordinate(0, q);
> q.set(0.0f, 0.0f);
> plane.setTextureCoordinate(1, q);
> q.set(1.0f, 0.0f);
> plane.setTextureCoordinate(2, q);
> q.set(1.0f, 1.0f);
> plane.setTextureCoordinate(3, q);
>
> return plane;
> }
>
> public static void main(String args[])
> {
> JFrame jFrame =3D new JFrame("Swing3D Primitive Texture");
> jFrame.setBounds(100, 100, 300, 300);
>
> jFrame.addWindowListener(new WindowAdapter()
> {
> public void windowClosing(WindowEvent event)
> {
> System.exit(0);
> }
> });
>
> Container jFrameContainer =3D jFrame.getContentPane();
> jFrameContainer.setLayout(null);
> jFrameContainer.setBounds(0, 0, 300, 300);
> jFrameContainer.setBackground(Color.pink);
>
> if (args.length !=3D 1)
> {
> System.out.println ("usage: java SphereTextureApp
> <image_file.ext>");
> System.exit (1);
> }
>
> PlanarImage planarImage =3D JAI.create("fileload", args[0]);
> BufferedImage buffImage =3D planarImage.getAsBufferedImage();
>
> SphereTextureApp sphereTextureApp =3D new =
SphereTextureApp(buffImage);
> sphereTextureApp.setBounds(0, 0, 256, 256);
> sphereTextureApp.setVisible(true);
>
> jFrameContainer.add(sphereTextureApp);
> jFrame.setVisible(true);
> jFrame.validate();
>
> }
> }
>
>
> > pieter wrote:
> >
> > hello all.
> >
> > I would like to make a Texture-object from the information in an =
Image
> > object. I got the Image via the getImage() method in an AWT =
Component.
> > Texture-classes (Texture2D in particular) seem to want an
> > ImageComponent-object. And an ImageComponent-object seems to want a
> > BufferedImage-object. And to use a BufferedImage-object, I need a =
kind
> > of
> > Raster.
> > But I can't seem to convert the Image2D-object that I have to any of
> > those
> > required classes.
> >
> > So if anybody knows how to make a Texture from an Image2D, I'd be =
very
> > gratefull if you could tell me!
> >
> > P.S. Are there any good books that address such issues (or that
> > explain the
> > exact working of the util-package classes) ?
> >
> > Thanx.
> > Pieter.
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