pointshape.java

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package movepoint;

import javax.media.j3d.*;

/**
 * <p>Title: 运动的点</p>
 * <p>Description: 生成几个运动的点</p>
 * <p>Copyright: Copyright (c) 2004</p>
 * <p>Company: 中国农业大学计算机系</p>
 * @author 彭波
 * @version 1.0
 */

public class pointShape extends Shape3D {
  private float vert[] = {
     0.8f, 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,
  };
  private float color[] = {
    0.0f,0.5f,1.0f,
    0.5f,0.0f,1.0f,
    0.0f,0.8f,2.0f,
    1.0f,0.0f,0.3f,
    0.0f,1.0f,0.3f,
    0.3f,0.8f,0.0f,
  };
  public pointShape() {
    int[] index={ 0 , 2 , 3 , 4 };
    int VertexCount=4;
    IndexedPointArray point = new IndexedPointArray(6,
      IndexedPointArray.COORDINATES|
        IndexedPointArray.COLOR_3,VertexCount);
    point.setCoordinates(0,vert);
    point.setColors(0,color);
    point.setCoordinateIndices(0,index);
    point.setColorIndices(0,index);
    PointAttributes pa = new PointAttributes();
    pa.setPointSize(20.0f);
    pa.setPointAntialiasingEnable(true);
    Appearance ap = new Appearance();
    ap.setPointAttributes(pa);
    this.setGeometry(point);
    this.setAppearance(ap);
  }
}