m3gcanvas.java

3D手机游戏开发实例源代码 3D迷宫游戏的演示程序

import javax.microedition.lcdui.*;
import javax.microedition.m3g.*;
import javax.microedition.lcdui.game.*;

class M3GCanvas  extends GameCanvas implements Runnable
{
    private Graphics3D g3d ; // Graphics object used to render the 3d world.
    private Graphics g2d; 
    private World world; // This world contains the camera and the pyramidMesh.
    private Light light;
    static final int LIGHT_ID = 16;
    private Transform transform = new Transform();

    public M3GCanvas(){
    	super(true);
   		try {
			// Load the world from the m3g file							
			world = (World) Loader.load("/pallot.m3g")[0];
		//	light = (Light) world.find(CAMERA_ID);
      light = new Light();
      light.setMode(Light.DIRECTIONAL);
      world.addChild(light);
      world.align(null);
      setupAspectRatio();
		} catch (Exception e) {
			e.printStackTrace();
		}

        Thread t = new Thread(this);
        t.start();
    }
    public void run() {
        g3d = Graphics3D.getInstance();
        
        g2d = getGraphics();
        while(true){
        transform.postRotate(10.0f,0.0f, 1.0f, 0.0f);   // rotate around this axis
        light.setTransform(transform);
        try{
            g3d.bindTarget(g2d); // Binds the given Graphics or mutable Image2D as the rendering target of this Graphics3D
            g3d.clear(null);
            g3d.render(world);
        }finally{
            g3d.releaseTarget();
        }
  
            flushGraphics();
        }
    }
 	void setupAspectRatio() {

    float aspectratio = (float)getWidth() / getHeight();
		Camera camera = world.getActiveCamera();
		float[] params = new float[4];
		int type = camera.getProjection(params);
		camera.setPerspective(60.0f,aspectratio,1.0f, 1000.0f);

	} 

  
}