Projection en perspective ou projection parallèle
/* Auteur: Nicolas JANEY */
/* nicolas.janey@univ-fcomte.fr */
/* Novembre 2001 */
import java.applet.Applet;
import java.awt.*;
import java.awt.event.*;
import com.sun.j3d.utils.applet.MainFrame;
import com.sun.j3d.utils.geometry.*;
import com.sun.j3d.utils.universe.*;
import javax.media.j3d.*;
import javax.vecmath.*;
public class SimpleOrthoPersp extends Applet implements MouseListener {
private View view;
private boolean mode = true;
public BranchGroup createSceneGraph(SimpleUniverse u) {
BranchGroup objRoot = new BranchGroup();
BoundingSphere bounds;
bounds = new BoundingSphere(new Point3d(0.0,0.0,0.0),100.0);
Vector3f ldir = new Vector3f(1.0F,1.0F,-1.0F);
Color3f lcouldl = new Color3f(1.0F,1.0F,1.0F);
DirectionalLight dl = new DirectionalLight(lcouldl,ldir);
dl.setInfluencingBounds(bounds);
objRoot.addChild(dl);
Color3f lcoulal = new Color3f(0.3F,0.3F,0.1F);
AmbientLight al = new AmbientLight(lcoulal);
al.setInfluencingBounds(bounds);
objRoot.addChild(al);
{ TransformGroup objTrans = new TransformGroup();
objRoot.addChild(objTrans);
Transform3D t1 = new Transform3D();
t1.setTranslation(new Vector3d(0.0,0.1,0.9)) ;
Transform3D t2 = new Transform3D();
t1.setRotation(new AxisAngle4d(1.0,1.0,0.0,Math.PI/5.0)) ;
t1.mul(t2) ;
objTrans.setTransform(t1);
Appearance a = new Appearance();
Material m = new Material();
m.setDiffuseColor(0.9f,0.8f,0.4f);
m.setAmbientColor(0.6f,0.0f,0.6f);
a.setMaterial(m);
objTrans.addChild(new Box(0.1F,0.25F,0.50F,a)); }
objRoot.compile();
return objRoot;
}
public SimpleOrthoPersp() {
setLayout(new BorderLayout());
GraphicsConfiguration config;
config = SimpleUniverse.getPreferredConfiguration();
Canvas3D c = new Canvas3D(config);
add("Center",c);
c.addMouseListener(this);
SimpleUniverse u = new SimpleUniverse(c);
BranchGroup scene = createSceneGraph(u);
u.getViewingPlatform().setNominalViewingTransform();
view = u.getViewer().getView();
u.addBranchGraph(scene);
}
public static void main(String[] args) {
new MainFrame(new SimpleOrthoPersp(),300,250);
}
public void mouseClicked(MouseEvent e) {
}
public void mouseEntered(MouseEvent e) {
}
public void mouseExited(MouseEvent e) {
}
public void mousePressed(MouseEvent e) {
mode = !mode;
if ( mode )
view.setProjectionPolicy(View.PERSPECTIVE_PROJECTION);
else
view.setProjectionPolicy(View.PARALLEL_PROJECTION);
}
public void mouseReleased(MouseEvent e) {
}
}
Remarques,erreurs
nicolas.janey@univ-fcomte.fr