📄 simplegeominfo.java
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import java.applet.Applet;
import java.awt.BorderLayout;
//import java.awt.Frame;
import com.sun.j3d.utils.applet.MainFrame;
import com.sun.j3d.utils.universe.*;
import com.sun.j3d.utils.geometry.*;
import javax.media.j3d.*;
import javax.vecmath.*;
public class SimpleGeomInfo extends Applet {
float[] createCoordinateData() {
float[] data = new float[69*3]; // ******
int i = 0;
data[i++]= -1.3f; data[i++]= -0.3f; data[i++]= 0.3f; //0
data[i++]= -0.9f; data[i++]= -0.3f; data[i++]= 0.3f; //1
data[i++]= -0.8f; data[i++]= -0.1f; data[i++]= 0.3f; //2
data[i++]= -0.6f; data[i++]= -0.1f; data[i++]= 0.3f; //3
data[i++]= -0.5f; data[i++]= -0.3f; data[i++]= 0.3f; //4
data[i++]= 0.2f; data[i++]= -0.3f; data[i++]= 0.3f; //5
data[i++]= 0.3f; data[i++]= -0.1f; data[i++]= 0.3f; //6
data[i++]= 0.5f; data[i++]= -0.1f; data[i++]= 0.3f; //7
data[i++]= 0.6f; data[i++]= -0.3f; data[i++]= 0.3f; //8
data[i++]= 1.3f; data[i++]= -0.3f; data[i++]= 0.3f; //9
data[i++]= 1.2f; data[i++]= -0.1f; data[i++]= 0.3f; //10
data[i++]= 0.5f; data[i++]= 0.0f; data[i++]= 0.3f; //11
data[i++]= 0.1f; data[i++]= 0.3f; data[i++]= 0.3f; //12
data[i++]= -0.5f; data[i++]= 0.3f; data[i++]= 0.3f; //13
data[i++]= -1.1f; data[i++]= 0.0f; data[i++]= 0.3f; //14
data[i++]= -1.3f; data[i++]= 0.0f; data[i++]= 0.3f; //15
data[i++]= -1.3f; data[i++]= -0.3f; data[i++]= 0.3f; //16
// System.out.println("end polygon; total vertex count: "+i/3);
data[i++]= -1.3f; data[i++]= -0.3f; data[i++]=-0.3f; // 0 17
data[i++]= -1.3f; data[i++]= 0.0f; data[i++]=-0.3f; // 1 18
data[i++]= -1.1f; data[i++]= 0.0f; data[i++]=-0.3f; // 2 19
data[i++]= -0.5f; data[i++]= 0.3f; data[i++]=-0.3f; // 3 20
data[i++]= 0.1f; data[i++]= 0.3f; data[i++]=-0.3f; // 4 21
data[i++]= 0.5f; data[i++]= 0.0f; data[i++]=-0.3f; // 5 22
data[i++]= 1.2f; data[i++]= -0.1f; data[i++]=-0.3f; // 6 23
data[i++]= 1.3f; data[i++]= -0.3f; data[i++]=-0.3f; // 7 24
data[i++]= 0.6f; data[i++]= -0.3f; data[i++]=-0.3f; // 8 25
data[i++]= 0.5f; data[i++]= -0.1f; data[i++]=-0.3f; // 9 26
data[i++]= 0.3f; data[i++]= -0.1f; data[i++]=-0.3f; //10 27
data[i++]= 0.2f; data[i++]= -0.3f; data[i++]=-0.3f; //11 28
data[i++]= -0.5f; data[i++]= -0.3f; data[i++]=-0.3f; //12 29
data[i++]= -0.6f; data[i++]= -0.1f; data[i++]=-0.3f; //13 30
data[i++]= -0.8f; data[i++]= -0.1f; data[i++]=-0.3f; //14 31
data[i++]= -0.9f; data[i++]= -0.3f; data[i++]=-0.3f; //15 32
data[i++]= -1.3f; data[i++]= -0.3f; data[i++]=-0.3f; //16 33
// System.out.println("end polygon; total vertex count: "+i/3);
data[i++]= 1.3f; data[i++]= -0.3f; data[i++]=-0.3f; // 0 34
data[i++]= 1.2f; data[i++]= -0.1f; data[i++]=-0.3f; // 1 35
data[i++]= 1.2f; data[i++]= -0.1f; data[i++]= 0.3f; // 2 36
data[i++]= 1.3f; data[i++]= -0.3f; data[i++]= 0.3f; // 3 37
data[i++]= 1.3f; data[i++]= -0.3f; data[i++]=-0.3f; // 4 38
// System.out.println("end polygon; total vertex count: "+i/3);
data[i++]= 1.2f; data[i++]= -0.1f; data[i++]=-0.3f; // 0 39
data[i++]= 0.5f; data[i++]= 0.0f; data[i++]=-0.3f; // 1 40
data[i++]= 0.5f; data[i++]= 0.0f; data[i++]= 0.3f; // 2 41
data[i++]= 1.2f; data[i++]= -0.1f; data[i++]= 0.3f; // 3 42
data[i++]= 1.2f; data[i++]= -0.1f; data[i++]=-0.3f; // 4 43
// System.out.println("end polygon; total vertex count: "+i/3);
data[i++]= 0.5f; data[i++]= 0.0f; data[i++]=-0.3f; // 0 44
data[i++]= 0.1f; data[i++]= 0.3f; data[i++]=-0.3f; // 1 45
data[i++]= 0.1f; data[i++]= 0.3f; data[i++]= 0.3f; // 2 46
data[i++]= 0.5f; data[i++]= 0.0f; data[i++]= 0.3f; // 3 47
data[i++]= 0.5f; data[i++]= 0.0f; data[i++]=-0.3f; // 4 48
// System.out.println("end polygon; total vertex count: "+i/3);
data[i++]= 0.1f; data[i++]= 0.3f; data[i++]=-0.3f; // 0 49
data[i++]= -0.5f; data[i++]= 0.3f; data[i++]=-0.3f; // 1 50
data[i++]= -0.5f; data[i++]= 0.3f; data[i++]= 0.3f; // 2 51
data[i++]= 0.1f; data[i++]= 0.3f; data[i++]= 0.3f; // 3 52
data[i++]= 0.1f; data[i++]= 0.3f; data[i++]=-0.3f; // 4 53
// System.out.println("end polygon; total vertex count: "+i/3);
data[i++]= -0.5f; data[i++]= 0.3f; data[i++]=-0.3f; // 0 54
data[i++]= -1.1f; data[i++]= 0.0f; data[i++]=-0.3f; // 1 55
data[i++]= -1.1f; data[i++]= 0.0f; data[i++]= 0.3f; // 2 56
data[i++]= -0.5f; data[i++]= 0.3f; data[i++]= 0.3f; // 3 57
data[i++]= -0.5f; data[i++]= 0.3f; data[i++]=-0.3f; // 4 58
// System.out.println("end polygon; total vertex count: "+i/3);
data[i++]= -1.1f; data[i++]= 0.0f; data[i++]=-0.3f; // 0 59
data[i++]= -1.3f; data[i++]= 0.0f; data[i++]=-0.3f; // 1 60
data[i++]= -1.3f; data[i++]= 0.0f; data[i++]= 0.3f; // 2 61
data[i++]= -1.1f; data[i++]= 0.0f; data[i++]= 0.3f; // 3 62
data[i++]= -1.1f; data[i++]= 0.0f; data[i++]=-0.3f; // 4 63
// System.out.println("end polygon; total vertex count: "+i/3);
data[i++]= -1.3f; data[i++]= 0.0f; data[i++]=-0.3f; // 0 64
data[i++]= -1.3f; data[i++]= -0.3f; data[i++]=-0.3f; // 1 65
data[i++]= -1.3f; data[i++]= -0.3f; data[i++]= 0.3f; // 2 66
data[i++]= -1.3f; data[i++]= 0.0f; data[i++]= 0.3f; // 3 67
data[i++]= -1.3f; data[i++]= 0.0f; data[i++]=-0.3f; // 4 68
// System.out.println("end polygon; total vertex count: "+i/3);
return data;
}
Appearance createMaterialAppearance(){
Appearance materialAppear = new Appearance();
PolygonAttributes polyAttrib = new PolygonAttributes();
polyAttrib.setCullFace(PolygonAttributes.CULL_NONE);
materialAppear.setPolygonAttributes(polyAttrib);
Material material = new Material();
material.setDiffuseColor(new Color3f(1.0f, 0.0f, 0.0f));
materialAppear.setMaterial(material);
return materialAppear;
}
Appearance createWireFrameAppearance(){
Appearance materialAppear = new Appearance();
PolygonAttributes polyAttrib = new PolygonAttributes();
polyAttrib.setPolygonMode(PolygonAttributes.POLYGON_LINE);
materialAppear.setPolygonAttributes(polyAttrib);
ColoringAttributes redColoring = new ColoringAttributes();
redColoring.setColor(1.0f, 0.0f, 0.0f);
materialAppear.setColoringAttributes(redColoring);
return materialAppear;
}
/////////////////////////////////////////////////
//
// create scene graph branch group
//
public BranchGroup createSceneGraph() {
int total = 0;
// System.out.println("\n --- geometry debug information --- \n");
float[] coordinateData = null;
coordinateData = createCoordinateData();
int[] stripCount = {17,17,5,5,5,5,5,5,5}; // ******
for(int i=0; i<stripCount.length; i++){
// System.out.println("stripCount["+i+"] = "+stripCount[i]);
total +=stripCount[i];
}
if (total != coordinateData.length/3){
// System.out.println(" coordinateData vertex count: "+coordinateData.length/3);
// System.out.println("stripCount total vertex count: "+total);
}
GeometryInfo gi = new GeometryInfo(GeometryInfo.POLYGON_ARRAY);
gi.setCoordinates(coordinateData);
gi.setStripCounts(stripCount);
Triangulator tr = new Triangulator();
// System.out.println("begin triangulation");
tr.triangulate(gi);
// System.out.println("end triangulation");
gi.recomputeIndices();
NormalGenerator ng = new NormalGenerator();
ng.generateNormals(gi);
gi.recomputeIndices();
Stripifier st = new Stripifier();
st.stripify(gi);
gi.recomputeIndices();
Shape3D part = new Shape3D();
// if(wireFrame==true)
// part.setAppearance(createWireFrameAppearance());
// else
part.setAppearance(createMaterialAppearance());
part.setGeometry(gi.getGeometryArray());
/////////////////////////////
BranchGroup contentRoot = new BranchGroup();
// Create the transform group node and initialize it to the
// identity. Add it to the root of the subgraph.
TransformGroup objSpin = new TransformGroup();
objSpin.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE);
contentRoot.addChild(objSpin);
objSpin.addChild(part);
////////////////////////
LineStripArray lineArray = new LineStripArray(69, LineArray.COORDINATES, stripCount); //*****
lineArray.setCoordinates(0, coordinateData);
Appearance blueColorAppearance = new Appearance();
ColoringAttributes blueColoring = new ColoringAttributes();
blueColoring.setColor(0.0f, 0.0f, 1.0f);
blueColorAppearance.setColoringAttributes(blueColoring);
LineAttributes lineAttrib = new LineAttributes();
lineAttrib.setLineWidth(2.0f);
blueColorAppearance.setLineAttributes(lineAttrib);
objSpin.addChild(new Shape3D(lineArray, blueColorAppearance));
Alpha rotationAlpha = new Alpha(-1, 16000);
RotationInterpolator rotator =
new RotationInterpolator(rotationAlpha, objSpin);
// a bounding sphere specifies a region a behavior is active
// create a sphere centered at the origin with radius of 1
BoundingSphere bounds = new BoundingSphere();
rotator.setSchedulingBounds(bounds);
objSpin.addChild(rotator);
DirectionalLight lightD = new DirectionalLight();
lightD.setDirection(new Vector3f(0.0f,-0.7f,-0.7f));
lightD.setInfluencingBounds(bounds);
contentRoot.addChild(lightD);
AmbientLight lightA = new AmbientLight();
lightA.setInfluencingBounds(bounds);
contentRoot.addChild(lightA);
Background background = new Background();
background.setColor(1.0f, 1.0f, 1.0f);
background.setApplicationBounds(bounds);
contentRoot.addChild(background);
// Let Java 3D perform optimizations on this scene graph.
// contentRoot.compile();
return contentRoot;
} // end of CreateSceneGraph method of MobiusApp
// Create a simple scene and attach it to the virtual universe
public SimpleGeomInfo() {
setLayout(new BorderLayout());
Canvas3D canvas3D = new Canvas3D(null);
add("Center", canvas3D);
BranchGroup scene = createSceneGraph();
// SimpleUniverse is a Convenience Utility class
SimpleUniverse simpleU = new SimpleUniverse(canvas3D);
// This will move the ViewPlatform back a bit so the
// objects in the scene can be viewed.
simpleU.getViewingPlatform().setNominalViewingTransform();
simpleU.addBranchGraph(scene);
} // end of GeomInfoApp constructor
// The following allows this to be run as an application
// as well as an applet
public static void main(String[] args) {
// Frame frame =
new MainFrame(new SimpleGeomInfo(), 256, 256);
} // end of main method of MobiusApp
} // end of class GeomInfoApp
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