I want to create a polyhedron and that is the
code. But the shape that generates isn;t as good as i expected.
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import com.sun.j3d.utils.universe.*;
import
com.sun.j3d.utils.geometry.*;
import javax.media.j3d.BranchGroup;
import
com.sun.j3d.utils.applet.MainFrame;
import javax.media.j3d.*;
import
java.awt.*;
import javax.vecmath.*;
import
java.awt.BorderLayout;
import javax.media.j3d.GeometryArray;
public class ThePolyhedron extends
javax.media.j3d.Shape3D {
private Point3d a1= new Point3d(0.333333,
0.942809, 0.57735);
private Point3d a2= new Point3d(-1., 0,
0.57735);
private Point3d a3= new Point3d(-0.333333, -0.942809,
0.57735);
private Point3d a4= new Point3d(1., 0,
-0.57735);
private Point3d a5= new Point3d(0.666667, -0.942809,
0);
private Point3d a6= new Point3d(-0.666667, 0.942809,
0);
private Point3d a7= new Point3d(0.333333, 0.942809,
-0.57735);
private Point3d a8= new Point3d(-1., 0,
-0.57735);
private Point3d a9= new Point3d(-0.333333, -0.942809,
-0.57735);
private Point3d a10= new Point3d(0, 0,
-1.1547);
private Point3d a11= new Point3d(0, 0,
1.1547);
private Point3d a12= new Point3d(1., 0,
0.57735);
public ThePolyhedron()
{
Point3d[]
points=new
Point3d[12];
points[0]=a1;
points[1]=a2;
points[2]=a3;
points[3]=a4;
points[4]=a5;
points[5]=a6;
points[6]=a7;
points[7]=a8;
points[8]=a9;
points[9]=a10;
points[10]=a11;
points[11]=a12;
int[]
stripCounts=new int[1];
stripCounts[0]=12;
int[] contourCount=new
int[1];
contourCount[0]=1;
GeometryInfo
gInf = new GeometryInfo(GeometryInfo.POLYGON_ARRAY);
gInf.setCoordinates(points);
gInf.setStripCounts(stripCounts);
gInf.setContourCounts(contourCount);
NormalGenerator
ng= new NormalGenerator();
ng.setCreaseAngle ((float)
Math.toRadians(30));
ng.generateNormals(gInf);
this.setGeometry(gInf.getGeometryArray());
SimpleUniverse universe = new
SimpleUniverse();
GraphicsConfiguration
config = universe.getPreferredConfiguration();
Canvas3D c = new
Canvas3D(config);
BranchGroup group = new
BranchGroup();
group.addChild(this);
Color3f light1Color = new Color3f(0.0f, 1.0f, 0.0f);
Vector3f light1Direction = new Vector3f(4.0f, -7.0f,
12.0f);
DirectionalLight dl
= new DirectionalLight(light1Color,light1Direction);
BoundingSphere bounds = new BoundingSphere();
bounds.setRadius(Double.POSITIVE_INFINITY);
dl.setInfluencingBounds(bounds);
group.addChild(dl);
universe.getViewingPlatform().setNominalViewingTransform();
universe.addBranchGraph(group);
}
} // end of class
-------------------------
Does this work for
you?
