package lecture9;


import com.jme3.app.SimpleApplication;
import com.jme3.material.Material;
import com.jme3.math.ColorRGBA;
import com.jme3.math.FastMath;
import com.jme3.math.Quaternion;
import com.jme3.math.Vector3f;
import com.jme3.scene.shape.Box;
import com.jme3.scene.Geometry;
import com.jme3.scene.Node;
import com.jme3.scene.shape.Sphere;


public class rotate2 extends SimpleApplication {
    
    private Geometry earth;
    private Geometry moon;
    private Vector3f axis = new Vector3f(1, 2, 3);
    private Quaternion quat = new Quaternion();
    private Node pivotNode = new Node("PN");
    private float angle = 0;
    
    public static void main(String[] args) {
	rotate2 app = new rotate2();
        // app.setConfigShowMode(ConfigShowMode.AlwaysShow);
	app.start();
    }

    @Override
    public void simpleInitApp() {
        Material mat = new Material(assetManager, 
                "Common/MatDefs/Misc/Unshaded.j3md"); // create a simple material
        mat.setColor("Color", ColorRGBA.Blue);  
        
        Sphere a = new Sphere(100, 100, 1);
        earth  = new Geometry("earth", a);
        earth.setMaterial(mat);
        rootNode.attachChild(earth);

        Box b = new Box(0.3f, 0.3f, 0.3f);
        moon = new Geometry("moon", b);
        moon.setMaterial(mat);
        moon.setLocalTranslation(3, 0, 0);
        pivotNode.attachChild(moon);
        
        rootNode.attachChild(pivotNode);
        

    }
    @Override
    public void simpleUpdate(float tpf) {
      if (tpf < 1) {
        angle = angle + (tpf * 1);
        if (angle <= 2*FastMath.PI) {
        } else {
              angle -= 2*FastMath.PI;
          }
      }
      quat.fromAngleAxis(angle, axis);
      pivotNode.setLocalRotation(quat);
      // moon.setLocalTranslation(moon.getLocalTranslation().add(tpf*5,0,0));    
    }
}