move_in_certain_path.java

一个java3D的动画程序

/*
 * Created on 2005-7-17
 *
 * TODO To change the template for this generated file go to
 * Window - Preferences - Java - Code Style - Code Templates
 */
package Move;
import javax.media.j3d.*;
import javax.vecmath.AxisAngle4f;
import javax.vecmath.Point3d;
import javax.vecmath.Point3f;
import javax.vecmath.Quat4f;

import com.sun.j3d.utils.geometry.ColorCube;

public class Move_in_Certain_path extends Shape3D { 


   public BranchGroup createAnimOfMove(
   		Point3f[] positions,//物体运动的诡计，从Axis_info()中获取
		TransformGroup target1//
		){
   	BranchGroup objRoot = new BranchGroup();

    Alpha alpha = new Alpha(-1, 10000);
    TransformGroup target = new TransformGroup();
    Transform3D axisOfRotPos = new Transform3D();
    //target.setTransform(axisOfRotPos);
    
    //knots give a array to determine..
    float[] knots = {0.0f, 0.1f,0.5f, 0.8f, 0.9f, 1.0f};
    Quat4f[] quats = new Quat4f[6];
    //Point3f[] positions = new Point3f[6];

    target.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE);

    AxisAngle4f axis = new AxisAngle4f(1.0f,0.0f,0.0f,0.0f);
    axisOfRotPos.set(axis);

    quats[0] = new Quat4f(0.0f, 10.0f, 10.0f, 0.0f);
    quats[1] = new Quat4f(1.0f, 0.0f, 0.0f, 0.0f);
    quats[2] = new Quat4f(0.0f, 1.0f, 0.0f, 0.0f);
    quats[3] = new Quat4f(0.0f, 1.0f, 1.0f, 0.0f);
    quats[4] = new Quat4f(0.0f, 0.0f, 1.0f, 0.0f);
    quats[5] = quats[0];




   // RotPosPathInterpolator rotPosPath = new RotPosPathInterpolator(
    PositionPathInterpolator rotPosPath = new PositionPathInterpolator(
            alpha, target, axisOfRotPos, knots, 
			//quats, 
			positions);
    rotPosPath.setSchedulingBounds(new BoundingSphere(new Point3d(0.0, 0.0, 0.0), 400.0));


    objRoot.addChild(target);
    objRoot.addChild(rotPosPath);
    target.addChild(target1);

    Background background = new Background();
    background.setColor(0.0f, 0.0f, 0.0f);
    background.setApplicationBounds(new BoundingSphere(new Point3d(0.0, 0.0, 0.0), 400.0));
    objRoot.addChild(background);

    /*
    PointArray point_geom = new PointArray(9, GeometryArray.COORDINATES);
    point_geom.setCoordinates(0, positions);
    Appearance points_appear = new Appearance();
    ColoringAttributes points_coloring = new ColoringAttributes();
    points_coloring.setColor(1.0f, 0.0f, 0.0f);
    points_appear.setColoringAttributes(points_coloring);
    PointAttributes points_points = new PointAttributes(4.0f, true);
    points_appear.setPointAttributes(points_points);
    Shape3D points = new Shape3D(point_geom, points_appear);
    objRoot.addChild(points);
*/
    objRoot.compile();

    return objRoot;
}
  
   public Move_in_Certain_path(){
   		System.out.println("Move.Move_in_Certain_path Class give a movement in a Certain path");
   }
}