package com.scribblegame;

import javax.microedition.khronos.egl.EGLConfig;
import javax.microedition.khronos.opengles.GL10;

import android.content.Context;
import android.opengl.GLSurfaceView;
import android.opengl.GLU;
import android.util.Log;


public class GLRenderer implements GLSurfaceView.Renderer{
	private static final String TAG = "GLRenderer";
	private  final Context context;
	private final GLCube cube = new GLCube();
	private long startTime;
	private long fpsStartTime;
	private long numFrames;

	
	GLRenderer(Context context) {
	this.context = context;
	}
	public void onSurfaceCreated(GL10 gl, EGLConfig config) {
		Log.v("Renderer", "Surface Created");
		float lightAmbient[] = new float[] { 0.2f, 0.2f, 0.2f, 1 }; //Lighting
		float lightDiffuse[] = new float[] { 1, 1, 1, 1 };
		float[] lightPos = new float[] { 1, 1, 1, 1 };
		gl.glEnable(GL10.GL_LIGHTING);
		gl.glEnable(GL10.GL_LIGHT0);
		gl.glLightfv(GL10.GL_LIGHT0, GL10.GL_AMBIENT, lightAmbient, 0);
		gl.glLightfv(GL10.GL_LIGHT0, GL10.GL_DIFFUSE, lightDiffuse, 0);
		gl.glLightfv(GL10.GL_LIGHT0, GL10.GL_POSITION, lightPos, 0);

		
		float matAmbient[] = new float[] { 1, 1, 1, 1 };
		float matDiffuse[] = new float[] { 1, 1, 1, 1 };
		gl.glMaterialfv(GL10.GL_FRONT_AND_BACK, GL10.GL_AMBIENT, matAmbient, 0);
		gl.glMaterialfv(GL10.GL_FRONT_AND_BACK, GL10.GL_DIFFUSE, matDiffuse, 0);

		
		gl.glEnable(GL10.GL_DEPTH_TEST);
		gl.glDepthFunc(GL10.GL_LEQUAL);
		gl.glEnableClientState(GL10.GL_VERTEX_ARRAY);
	
		// Enable textures
		gl.glEnableClientState(GL10.GL_TEXTURE_COORD_ARRAY);
		gl.glEnable(GL10.GL_TEXTURE_2D);
		// Load the cube's texture from a bitmap
		GLCube.loadTexture(gl, context, R.drawable.animation);
  

		//gl.glDisable(GL10.GL_DITHER);
		//disable dither to boost performance
	}
	
	public void onSurfaceChanged(GL10 gl, int width, int height) {
		Log.v("Renderer", "Surface Changed");
	gl.glViewport(0, 0, width, height);
	gl.glMatrixMode(GL10.GL_PROJECTION);
	gl.glLoadIdentity();
	float ratio = (float)width/height;
	GLU.gluPerspective(gl, 45.0f, ratio, 1, 100f);
	
	startTime = System.currentTimeMillis();
	fpsStartTime = startTime;
	numFrames = 0;
	}
	
	public void onDrawFrame(GL10 gl) {
		  // Clear the screen to black
		//Log.v("Renderer", "Drawing Frame");
		  gl.glClear(GL10.GL_COLOR_BUFFER_BIT | GL10.GL_DEPTH_BUFFER_BIT);
			  // Position model so we can see it
			  gl.glMatrixMode(GL10.GL_MODELVIEW);
			  gl.glLoadIdentity();
			  gl.glTranslatef(0, 0, -3.0f);
			  // Other drawing commands go here...
			  
			// Set rotation angle based on the time
			long elapsed = System.currentTimeMillis() - startTime;
			gl.glRotatef(elapsed * (30f / 1000f), 0, 1, 0);
			gl.glRotatef(elapsed * (15f / 1000f), 1, 0, 0);
			// Draw the model
			cube.draw(gl);

	}
	
}