?? point1.java
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import java.applet.Applet;
import java.awt.BorderLayout;
import com.sun.j3d.utils.applet.MainFrame;
import java.awt.GraphicsConfiguration;
import com.sun.j3d.utils.universe.*;
import javax.media.j3d.*;
import javax.vecmath.*;
public class Point1 extends Applet {
public BranchGroup createSceneGraph() {
BranchGroup objRoot = new BranchGroup();
float vert[] = {.8f, 0.8f,0.0f,-0.8f, 0.8f,0.0f,0.5f, 0.0f,0.0f, -0.5f, 0.0f,0.0f,-0.8f,-0.8f,0.0f,0.8f,-0.8f,0.0f,};
float color[] = { 0.0f,0.5f,1.0f, 0.5f,0.0f,1.0f, 0.0f,0.8f,0.2f, 1.0f,0.0f,0.3f, 0.0f,1.0f,0.3f, 0.3f,0.8f,0.0f, };
Shape3D shape = new Shape3D();
PointArray point = new PointArray(6, PointArray.COORDINATES |PointArray.COLOR_3);
point.setCoordinates(0,vert);
point.setColors(0,color);
PointAttributes pa = new PointAttributes();
pa.setPointSize(200000.0f);
pa.setPointAntialiasingEnable(true); //不加這一行,點的顯示效果為正方形 //加了這一行,點的顯示效果為圓形
Appearance ap = new Appearance();
ap.setPointAttributes(pa);
shape.setGeometry(point);
objRoot.addChild(shape);
objRoot.compile();
return objRoot;
}
public Point1() {
setLayout(new BorderLayout());
GraphicsConfiguration config=SimpleUniverse.getPreferredConfiguration();
Canvas3D c = new Canvas3D(config);
add("Center", c);
BranchGroup scene = createSceneGraph();
SimpleUniverse u = new SimpleUniverse(c);
u.getViewingPlatform().setNominalViewingTransform();
u.addBranchGraph(scene); }
public static void main(String[] args) { new MainFrame(new Point1(), 400,400); }}
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