offscreencanvas3d.java

运用java3D模拟刚体间的碰撞,爆炸及在万有引力作用下的运动轨迹,设置适当的参数可以模拟天体运动等多种物理现象.

package com.bchilds.Physics3D;


/*
 *	@(#)OffScreenCanvas3D.java 1.4 02/04/01 15:04:10
 *
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 * from this software without specific prior written permission.
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import java.awt.GraphicsConfiguration;
import java.awt.image.BufferedImage;
import javax.media.j3d.*;
import javax.vecmath.*;


class OffScreenCanvas3D extends Canvas3D {
    OffScreenCanvas3D(GraphicsConfiguration graphicsConfiguration,
		      boolean offScreen) {

	super(graphicsConfiguration, offScreen);
    }

    BufferedImage doRender(int width, int height) {

	BufferedImage bImage =
	    new BufferedImage(width, height, BufferedImage.TYPE_INT_ARGB);

	ImageComponent2D buffer =
	    new ImageComponent2D(ImageComponent.FORMAT_RGBA, bImage);

	setOffScreenBuffer(buffer);
	renderOffScreenBuffer();
	waitForOffScreenRendering();
	bImage = getOffScreenBuffer().getImage();

	return bImage;
    }

    public void postSwap() {
	// No-op since we always wait for off-screen rendering to complete
    }
}