1 /*
2  * Copyright (C) 2008 The Android Open Source Project
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  *      http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 
17 package com.example.android.apis.graphics.kube;
18 
19 import java.nio.ShortBuffer;
20 import java.util.ArrayList;
21 import java.util.Iterator;
22 
23 public class GLShape {
24 
GLShape(GLWorld world)25 	public GLShape(GLWorld world) {
26 		mWorld = world;
27 	}
28 
addFace(GLFace face)29 	public void addFace(GLFace face) {
30 		mFaceList.add(face);
31 	}
32 
setFaceColor(int face, GLColor color)33 	public void setFaceColor(int face, GLColor color) {
34 		mFaceList.get(face).setColor(color);
35 	}
36 
putIndices(ShortBuffer buffer)37 	public void putIndices(ShortBuffer buffer) {
38 		Iterator<GLFace> iter = mFaceList.iterator();
39 		while (iter.hasNext()) {
40 			GLFace face = iter.next();
41 			face.putIndices(buffer);
42 		}
43 	}
44 
getIndexCount()45 	public int getIndexCount() {
46 		int count = 0;
47 		Iterator<GLFace> iter = mFaceList.iterator();
48 		while (iter.hasNext()) {
49 			GLFace face = iter.next();
50 			count += face.getIndexCount();
51 		}
52 		return count;
53 	}
54 
addVertex(float x, float y, float z)55 	public GLVertex addVertex(float x, float y, float z) {
56 
57 		// look for an existing GLVertex first
58 		Iterator<GLVertex> iter = mVertexList.iterator();
59 		while (iter.hasNext()) {
60 			GLVertex vertex = iter.next();
61 			if (vertex.x == x && vertex.y == y && vertex.z == z) {
62 				return vertex;
63 			}
64 		}
65 
66 		// doesn't exist, so create new vertex
67 		GLVertex vertex = mWorld.addVertex(x, y, z);
68 		mVertexList.add(vertex);
69 		return vertex;
70 	}
71 
animateTransform(M4 transform)72 	public void animateTransform(M4 transform) {
73 		mAnimateTransform = transform;
74 
75 		if (mTransform != null)
76 			transform = mTransform.multiply(transform);
77 
78 		Iterator<GLVertex> iter = mVertexList.iterator();
79 		while (iter.hasNext()) {
80 			GLVertex vertex = iter.next();
81 			mWorld.transformVertex(vertex, transform);
82 		}
83 	}
84 
startAnimation()85 	public void startAnimation() {
86 	}
87 
endAnimation()88 	public void endAnimation() {
89 		if (mTransform == null) {
90 			mTransform = new M4(mAnimateTransform);
91 		} else {
92 			mTransform = mTransform.multiply(mAnimateTransform);
93 		}
94 	}
95 
96 	public M4						mTransform;
97 	public M4						mAnimateTransform;
98 	protected ArrayList<GLFace>		mFaceList = new ArrayList<GLFace>();
99 	protected ArrayList<GLVertex>	mVertexList = new ArrayList<GLVertex>();
100 	protected ArrayList<Integer>	mIndexList = new ArrayList<Integer>();	// make more efficient?
101 	protected GLWorld mWorld;
102 }
103