Android example source code file (GLShape.java)

This example Android source code file (GLShape.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Android by Example" ^TM.

Java - Android tags/keywords

arraylist, glcolor, glface, glshape, glvertex, glworld, io, iterator, m4, nio, util

The GLShape.java Android example source code

/*
 * Copyright (C) 2008 The Android Open Source Project
 *
 * 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.
 */

package com.example.android.apis.graphics.kube;

import java.nio.ShortBuffer;
import java.util.ArrayList;
import java.util.Iterator;

public class GLShape {

	public GLShape(GLWorld world) {
		mWorld = world;
	}
	
	public void addFace(GLFace face) {
		mFaceList.add(face);
	}
	
	public void setFaceColor(int face, GLColor color) {
		mFaceList.get(face).setColor(color);
	}
			
	public void putIndices(ShortBuffer buffer) {
		Iterator<GLFace> iter = mFaceList.iterator();
		while (iter.hasNext()) {
			GLFace face = iter.next();
			face.putIndices(buffer);
		}		
	}
	
	public int getIndexCount() {
		int count = 0;
		Iterator<GLFace> iter = mFaceList.iterator();
		while (iter.hasNext()) {
			GLFace face = iter.next();
			count += face.getIndexCount();
		}		
		return count;
	}

	public GLVertex addVertex(float x, float y, float z) {
		
		// look for an existing GLVertex first
		Iterator<GLVertex> iter = mVertexList.iterator();
		while (iter.hasNext()) {
			GLVertex vertex = iter.next();
			if (vertex.x == x && vertex.y == y && vertex.z == z) {
				return vertex;
			}
		}
		
		// doesn't exist, so create new vertex
		GLVertex vertex = mWorld.addVertex(x, y, z);
		mVertexList.add(vertex);
		return vertex;
	}

	public void animateTransform(M4 transform) {
		mAnimateTransform = transform;
		
		if (mTransform != null)
			transform = mTransform.multiply(transform);

		Iterator<GLVertex> iter = mVertexList.iterator();
		while (iter.hasNext()) {
			GLVertex vertex = iter.next();
			mWorld.transformVertex(vertex, transform);
		}
	}
	
	public void startAnimation() {
	}

	public void endAnimation() {
		if (mTransform == null) {
			mTransform = new M4(mAnimateTransform);
		} else {
			mTransform = mTransform.multiply(mAnimateTransform);
		}
	}

	public M4						mTransform;
	public M4						mAnimateTransform;
	protected ArrayList<GLFace>		mFaceList = new ArrayList();
	protected ArrayList<GLVertex>	mVertexList = new ArrayList();
	protected ArrayList<Integer>	mIndexList = new ArrayList();	// make more efficient?
	protected GLWorld mWorld;
}