Android Open Source - 3dmultiplayer Cube

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License

The source code is released under:

Apache License Version 2.0, January 2004 http://www.apache.org/licenses/ TERMS AND CONDITIONS FOR USE, REPRODUC...

Java Source Code

/*
 * Copyright 2013 Mark Injerd/*w ww  . ja v a 2 s.c o  m*/
 *
 * 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.pilot51.multi3d.object;

import java.nio.ByteBuffer;
import java.nio.ByteOrder;
import java.nio.IntBuffer;

import javax.microedition.khronos.opengles.GL10;

/**
 * A vertex shaded cube.
 */
public class Cube {
  private IntBuffer mVertexBuffer;
  private IntBuffer mColorBuffer;
  private ByteBuffer mIndexBuffer;
  
  public Cube() {
    int one = 0x10000;
    int vertices[] =
      {-one, -one, -one, one, -one, -one, one, one, -one, -one, one, -one, -one, -one, one,
        one, -one, one, one, one, one, -one, one, one,};
    int colors[] =
      {0, 0, 0, one, one, 0, 0, one, one, one, 0, one, 0, one, 0, one, 0, 0, one, one, one,
        0, one, one, one, one, one, one, 0, one, one, one,};
    byte indices[] =
      {0, 4, 5, 0, 5, 1, 1, 5, 6, 1, 6, 2, 2, 6, 7, 2, 7, 3, 3, 7, 4, 3, 4, 0, 4, 7, 6, 4, 6,
        5, 3, 0, 1, 3, 1, 2};

    // Buffers to be passed to gl*Pointer() functions
    // must be direct, i.e., they must be placed on the
    // native heap where the garbage collector cannot
    // move them.
    //
    // Buffers with multi-byte datatypes (e.g., short, int, float)
    // must have their byte order set to native order

    mVertexBuffer = ByteBuffer.allocateDirect(vertices.length * 4).order(ByteOrder.nativeOrder()).asIntBuffer();
    mVertexBuffer.put(vertices);
    mVertexBuffer.position(0);
    mColorBuffer = ByteBuffer.allocateDirect(colors.length * 4).order(ByteOrder.nativeOrder()).asIntBuffer();
    mColorBuffer.put(colors);
    mColorBuffer.position(0);
    mIndexBuffer = ByteBuffer.allocateDirect(indices.length);
    mIndexBuffer.put(indices);
    mIndexBuffer.position(0);
  }

  public void draw(GL10 gl) {
    gl.glFrontFace(GL10.GL_CW);
    gl.glVertexPointer(3, GL10.GL_FIXED, 0, mVertexBuffer);
    gl.glColorPointer(4, GL10.GL_FIXED, 0, mColorBuffer);
    gl.glDrawElements(GL10.GL_TRIANGLES, 36, GL10.GL_UNSIGNED_BYTE, mIndexBuffer);
  }
}

Java Source Code List

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