101 lines
3.1 KiB
Java
101 lines
3.1 KiB
Java
/*
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* Copyright (C) 2009 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.android.sampleplugin.graphics;
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import java.nio.ByteBuffer;
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import java.nio.ByteOrder;
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import java.nio.IntBuffer;
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import javax.microedition.khronos.opengles.GL10;
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/**
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* A vertex shaded cube.
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*/
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class Cube
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{
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public Cube()
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{
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int one = 0x10000;
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int vertices[] = {
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-one, -one, -one,
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one, -one, -one,
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one, one, -one,
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-one, one, -one,
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-one, -one, one,
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one, -one, one,
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one, one, one,
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-one, one, one,
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};
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int colors[] = {
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0, 0, 0, one,
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one, 0, 0, one,
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one, one, 0, one,
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0, one, 0, one,
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0, 0, one, one,
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one, 0, one, one,
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one, one, one, one,
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0, one, one, one,
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};
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byte indices[] = {
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0, 4, 5, 0, 5, 1,
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1, 5, 6, 1, 6, 2,
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2, 6, 7, 2, 7, 3,
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3, 7, 4, 3, 4, 0,
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4, 7, 6, 4, 6, 5,
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3, 0, 1, 3, 1, 2
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};
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// Buffers to be passed to gl*Pointer() functions
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// must be direct, i.e., they must be placed on the
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// native heap where the garbage collector cannot
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// move them.
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//
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// Buffers with multi-byte datatypes (e.g., short, int, float)
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// must have their byte order set to native order
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ByteBuffer vbb = ByteBuffer.allocateDirect(vertices.length*4);
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vbb.order(ByteOrder.nativeOrder());
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mVertexBuffer = vbb.asIntBuffer();
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mVertexBuffer.put(vertices);
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mVertexBuffer.position(0);
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ByteBuffer cbb = ByteBuffer.allocateDirect(colors.length*4);
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cbb.order(ByteOrder.nativeOrder());
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mColorBuffer = cbb.asIntBuffer();
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mColorBuffer.put(colors);
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mColorBuffer.position(0);
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mIndexBuffer = ByteBuffer.allocateDirect(indices.length);
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mIndexBuffer.put(indices);
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mIndexBuffer.position(0);
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}
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public void draw(GL10 gl)
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{
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gl.glFrontFace(gl.GL_CW);
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gl.glVertexPointer(3, gl.GL_FIXED, 0, mVertexBuffer);
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gl.glColorPointer(4, gl.GL_FIXED, 0, mColorBuffer);
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gl.glDrawElements(gl.GL_TRIANGLES, 36, gl.GL_UNSIGNED_BYTE, mIndexBuffer);
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}
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private IntBuffer mVertexBuffer;
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private IntBuffer mColorBuffer;
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private ByteBuffer mIndexBuffer;
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}
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