FlipRenderer.java

package com.aincc.libtest.activity.flip.internal;

import static javax.microedition.khronos.opengles.GL10.GL_AMBIENT;
import static javax.microedition.khronos.opengles.GL10.GL_COLOR_BUFFER_BIT;
import static javax.microedition.khronos.opengles.GL10.GL_DEPTH_BUFFER_BIT;
import static javax.microedition.khronos.opengles.GL10.GL_DEPTH_TEST;
import static javax.microedition.khronos.opengles.GL10.GL_LEQUAL;
import static javax.microedition.khronos.opengles.GL10.GL_LIGHT0;
import static javax.microedition.khronos.opengles.GL10.GL_LIGHTING;
import static javax.microedition.khronos.opengles.GL10.GL_MODELVIEW;
import static javax.microedition.khronos.opengles.GL10.GL_NICEST;
import static javax.microedition.khronos.opengles.GL10.GL_PERSPECTIVE_CORRECTION_HINT;
import static javax.microedition.khronos.opengles.GL10.GL_POSITION;
import static javax.microedition.khronos.opengles.GL10.GL_PROJECTION;
import static javax.microedition.khronos.opengles.GL10.GL_SMOOTH;

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

import android.opengl.GLSurfaceView;
import android.opengl.GLU;
import android.view.View;

import com.aincc.lib.util.Logger;
import com.aincc.libtest.activity.flip.FlipViewGroup;

/*
 Copyright 2012 Aphid Mobile

 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
 You may obtain a copy of the License at

 http://www.apache.org/licenses/LICENSE-2.0

 Unless required by applicable law or agreed to in writing, software
 distributed under the License is distributed on an "AS IS" BASIS,
 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 See the License for the specific language governing permissions and
 limitations under the License.

 */

/**
 * 
 * <h3><b>FlipRenderer</b></h3></br>
 * 
 * 플립 렌더링 처리
 * 
 * @author aincc@barusoft.com
 * @version 1.0.0
 * @since 1.0.0
 */
public class FlipRenderer implements GLSurfaceView.Renderer
{
	/**
	 * 플립레이아웃
	 */
	private FlipViewGroup flipViewGroup;

	/**
	 * 플립카드
	 */
	private FlipCards cards;

	/**
	 * SurfaceView 생성여부 플래그
	 */
	private boolean created = false;

	/**
	 * 
	 * @since 1.0.0
	 * @param flipViewGroup
	 */
	public FlipRenderer(FlipViewGroup flipViewGroup)
	{
		this.flipViewGroup = flipViewGroup;
		cards = new FlipCards();
	}

	/**
	 * @since 1.0.0
	 * @return the Cards
	 */
	public FlipCards getCards()
	{
		return cards;
	}

	/**
	 * 
	 * @since 1.0.0
	 * @return boolean
	 */
	public boolean isCreated()
	{
		return created;
	}

	@Override
	public void onSurfaceCreated(GL10 gl, EGLConfig config)
	{
		Logger.i("FlipRenderer::onSurfaceCreated()");
		gl.glClearColor(0.0f, 0.0f, 0.0f, 0.0f);
		gl.glShadeModel(GL_SMOOTH);
		gl.glClearDepthf(1.0f);
		gl.glEnable(GL_DEPTH_TEST);
		gl.glDepthFunc(GL_LEQUAL);
		gl.glHint(GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST);

		created = true;

		cards.invalidateTexture();
		flipViewGroup.reloadTexture();
	}

	public static float[] light0Position =
	{ 0, 0, 100f, 0f };

	@Override
	public void onSurfaceChanged(GL10 gl, int width, int height)
	{
		Logger.i("FlipRenderer::onSurfaceChanged()");
		gl.glViewport(0, 0, width, height);

		gl.glMatrixMode(GL_PROJECTION);
		gl.glLoadIdentity();

		float fovy = 20f;
		float eyeZ = height / 2f / (float) Math.tan(FlipUtils.d2r(fovy / 2));

		GLU.gluPerspective(gl, fovy, (float) width / (float) height, 0.5f, Math.max(2500.0f, eyeZ));

		gl.glMatrixMode(GL_MODELVIEW);
		gl.glLoadIdentity();

		GLU.gluLookAt(gl, width / 2.0f, height / 2f, eyeZ, width / 2.0f, height / 2.0f, 0.0f, 0.0f, 1.0f, 0.0f);

		gl.glEnable(GL_LIGHTING);
		gl.glEnable(GL_LIGHT0);

		float lightAmbient[] = new float[]
		{ 3.5f, 3.5f, 3.5f, 1f };
		gl.glLightfv(GL_LIGHT0, GL_AMBIENT, lightAmbient, 0);

		light0Position = new float[]
		{ 0, 0, eyeZ, 0f };
		gl.glLightfv(GL_LIGHT0, GL_POSITION, light0Position, 0);
	}

	@Override
	public void onDrawFrame(GL10 gl)
	{
		gl.glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
		cards.draw(gl);
	}

	/**
	 * 텍스쳐 갱신
	 * 
	 * @since 1.0.0
	 * @param currentView
	 * @param prevView
	 * @param nextView
	 * @return boolean
	 */
	public boolean updateTexture(View currentView, View prevView, View nextView)
	{
		Logger.i("FlipRenderer::updateTexture() created = " + created);
		if (created)
		{
			cards.reloadTexture(currentView, prevView, nextView);
		}
		return !created;
		// flipViewGroup.getSurfaceView().requestRender();
	}

	/**
	 * 오류체크
	 * 
	 * @since 1.0.0
	 * @param gl
	 */
	public static void checkError(GL10 gl)
	{
		int error = gl.glGetError();
		if (error != 0)
		{
			throw new RuntimeException(GLU.gluErrorString(error));
		}
	}
}