Lignes polygonales
et objets apparentés
/* 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 com.sun.j3d.utils.behaviors.mouse.*;
import javax.media.j3d.*;
import javax.media.j3d.GeometryStripArray.*;
import javax.vecmath.*;
public class SimplePolyLines extends Applet implements ActionListener {
private Button b = new Button(" Points ");
private int aff = 0 ;
private String [] mess = new String[7];
private PointArray pa;
private LineArray la;
private TriangleArray ta;
private QuadArray qa;
private Shape3D shape;
private LineStripArray lsa;
private TriangleStripArray tsa;
private TriangleFanArray tfa;
public BranchGroup createSceneGraph(SimpleUniverse u) {
BranchGroup objRoot = new BranchGroup();
BoundingSphere bounds;
bounds = new BoundingSphere(new Point3d(0.0,0.0,0.0),100.0);
{ TransformGroup objTrans1 = new TransformGroup();
objRoot.addChild(objTrans1);
objTrans1.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE);
objTrans1.setCapability( TransformGroup.ALLOW_TRANSFORM_READ );
objTrans1.setCapability(TransformGroup.ENABLE_PICK_REPORTING);
MouseRotate behavior = new MouseRotate(objTrans1);
objTrans1.addChild(behavior);
behavior.setSchedulingBounds(bounds);
Appearance a = new Appearance();
PolygonAttributes attr = new PolygonAttributes();
attr.setCullFace(PolygonAttributes.CULL_NONE);
a.setPolygonAttributes(attr);
shape = new Shape3D(pa,a);
shape.setCapability(Shape3D.ALLOW_GEOMETRY_WRITE);
TransformGroup objTrans2 = new TransformGroup();
objTrans1.addChild(objTrans2);
Transform3D t3D = new Transform3D();
t3D.setRotation(new AxisAngle4d(1.0,1.0,0.0,Math.PI/5.0)) ;
objTrans2.setTransform(t3D);
objTrans2.addChild(shape); }
objRoot.compile();
return objRoot;
}
public SimplePolyLines() {
Point3d [] pts = new Point3d[8];
pts[0] = new Point3d(0.0,0.0,-0.1);
pts[1] = new Point3d(0.5,0.2,-0.3);
pts[2] = new Point3d(-0.2,0.6,-0.4);
pts[3] = new Point3d(0.3,0.7,0.5);
pts[4] = new Point3d(-0.4,-0.5,0.1);
pts[5] = new Point3d(0.3,-0.6,0.6);
pts[6] = new Point3d(-0.5,0.2,-0.2);
pts[7] = new Point3d(-0.4,0.7,0.2);
Point3d [] pts2 = new Point3d[6];
pts2[0] = new Point3d(0.0,0.0,-0.1);
pts2[1] = new Point3d(0.5,0.2,-0.3);
pts2[2] = new Point3d(-0.2,0.6,-0.4);
pts2[3] = new Point3d(0.3,0.7,0.5);
pts2[4] = new Point3d(-0.4,-0.5,0.1);
pts2[5] = new Point3d(0.3,-0.6,0.6);
Color3f [] couls = new Color3f[8];
couls[0] = new Color3f(0.0f,0.0f,1.0f);
couls[1] = new Color3f(1.0f,0.0f,0.0f);
couls[2] = new Color3f(0.0f,1.0f,0.0f);
couls[3] = new Color3f(1.0f,0.0f,1.0f);
couls[4] = new Color3f(1.0f,1.0f,0.0f);
couls[5] = new Color3f(1.0f,1.0f,1.0f);
couls[6] = new Color3f(1.0f,0.0f,1.0f);
couls[7] = new Color3f(1.0f,0.0f,0.0f);
Color3f [] couls2 = new Color3f[6];
couls2[0] = new Color3f(0.0f,0.0f,1.0f);
couls2[1] = new Color3f(1.0f,0.0f,0.0f);
couls2[2] = new Color3f(0.0f,1.0f,0.0f);
couls2[3] = new Color3f(1.0f,0.0f,1.0f);
couls2[4] = new Color3f(1.0f,1.0f,0.0f);
couls2[5] = new Color3f(1.0f,1.0f,1.0f);
pa = new PointArray(8,PointArray.COORDINATES|PointArray.COLOR_3);
pa.setCoordinates(0,pts);
pa.setColors(0,couls);
la = new LineArray(8,LineArray.COORDINATES|LineArray.COLOR_3);
la.setCoordinates(0,pts);
la.setColors(0,couls);
ta = new TriangleArray(6,TriangleArray.COORDINATES|TriangleArray.COLOR_3);
ta.setCoordinates(0,pts2);
ta.setColors(0,couls2);
qa = new QuadArray(8,QuadArray.COORDINATES|QuadArray.COLOR_3);
qa.setCoordinates(0,pts);
qa.setColors(0,couls);
int count[] = new int[1];
count[0] = 8;
lsa = new LineStripArray(8,LineStripArray.COORDINATES|LineStripArray.COLOR_3,count);
lsa.setCoordinates(0,pts);
lsa.setColors(0,couls);
tsa = new TriangleStripArray(8,TriangleStripArray.COORDINATES|TriangleStripArray.COLOR_3,count);
tsa.setCoordinates(0,pts);
tsa.setColors(0,couls);
tfa = new TriangleFanArray(8,TriangleFanArray.COORDINATES|TriangleFanArray.COLOR_3,count);
tfa.setCoordinates(0,pts);
tfa.setColors(0,couls);
mess[0]=" Points ";
mess[1]=" Segments ";
mess[2]=" Triangles ";
mess[3]=" Quads ";
mess[4]=" Ligne polygonale ";
mess[5]=" Triangle fan ";
mess[6]=" Triangle strip ";
setLayout(new BorderLayout());
GraphicsConfiguration config;
config = SimpleUniverse.getPreferredConfiguration();
Canvas3D c = new Canvas3D(config);
Container ct = new Container();
ct.setLayout(new FlowLayout());
b.addActionListener(this);
add("Center",c);
ct.add(b);
add("South",ct);
SimpleUniverse u = new SimpleUniverse(c);
BranchGroup scene = createSceneGraph(u);
u.getViewingPlatform().setNominalViewingTransform();
u.addBranchGraph(scene);
}
public void actionPerformed(ActionEvent e) {
if ( e.getSource() == b ) {
aff = (aff+1)%7;
switch ( aff ) {
case 0: shape.setGeometry(pa);
break;
case 1: shape.setGeometry(la);
break;
case 2: shape.setGeometry(ta);
break;
case 3: shape.setGeometry(qa);
break;
case 4: shape.setGeometry(lsa);
break;
case 5: shape.setGeometry(tfa);
break;
case 6: shape.setGeometry(tsa);
break;}
b.setLabel(mess[aff]);}
}
public static void main(String[] args) {
new MainFrame(new SimplePolyLines(),250,250);
}
}
Remarques,erreurs
nicolas.janey@univ-fcomte.fr
RETOUR