Android Open Source - block-composer Select Box Renderer

From Project

Back to project page block-composer.

License

The source code is released under:

MIT License

If you think the Android project block-composer listed in this page is inappropriate, such as containing malicious code/tools or violating the copyright, please email info at java2s dot com, thanks.

Java Source Code

package bwr.blockcomposer.models;
//  w  w  w.j  a  va  2 s .c  om
import java.nio.ByteBuffer;
import java.nio.ByteOrder;
import java.nio.CharBuffer;
import java.nio.IntBuffer;

import javax.microedition.khronos.opengles.GL10;

public class SelectBoxRenderer {
  private final static int FLOAT_SIZE = 4;
  private final static int CHAR_SIZE = 2;
    
  private int numVertices;
  
  private IntBuffer vertexBuffer;
  private CharBuffer indexBuffer;
  
  public void render(GL10 gl) {
    gl.glDisable(GL10.GL_LIGHTING);
    gl.glDisable(GL10.GL_TEXTURE_2D);

    gl.glEnableClientState(GL10.GL_VERTEX_ARRAY);
    gl.glVertexPointer(3, GL10.GL_FIXED, 0, vertexBuffer);
    
    gl.glLineWidthx(1<<16);
    gl.glColor4f(0.99609f,0.25390f,0.88281f, 1.0f);

    gl.glDrawElements(GL10.GL_LINES, numVertices, GL10.GL_UNSIGNED_SHORT, indexBuffer);
    
    gl.glDisableClientState(GL10.GL_VERTEX_ARRAY);
    gl.glEnable(GL10.GL_LIGHTING);
    gl.glEnable(GL10.GL_TEXTURE_2D);
  }
  
  private void putVertex(int x, int y, int z) {
    vertexBuffer.put(x);
    vertexBuffer.put(y);
    vertexBuffer.put(z);
  }
  
  public SelectBoxRenderer() {
    
    numVertices = 24;
            
    vertexBuffer = ByteBuffer.allocateDirect(numVertices*3*FLOAT_SIZE).order(ByteOrder.nativeOrder()).asIntBuffer();
    indexBuffer = ByteBuffer.allocateDirect(numVertices*CHAR_SIZE).order(ByteOrder.nativeOrder()).asCharBuffer();
    
        char index = 0; // vertex index
        
        putVertex(0,0,0);  indexBuffer.put(index++);
      putVertex(1<<16,0,0); indexBuffer.put(index++);

      putVertex(0,0,1<<16); indexBuffer.put(index++);
      putVertex(1<<16,0,1<<16); indexBuffer.put(index++);

      putVertex(0,1<<16,0); indexBuffer.put(index++);
      putVertex(1<<16,1<<16,0); indexBuffer.put(index++);

      putVertex(0,1<<16,1<<16); indexBuffer.put(index++);
      putVertex(1<<16,1<<16,1<<16); indexBuffer.put(index++);

      putVertex(0,0,0); indexBuffer.put(index++);
      putVertex(0,0,1<<16); indexBuffer.put(index++);

      putVertex(0,1<<16,0); indexBuffer.put(index++);
      putVertex(0,1<<16,1<<16); indexBuffer.put(index++);

      putVertex(1<<16,0,0); indexBuffer.put(index++);
      putVertex(1<<16,0,1<<16); indexBuffer.put(index++);

      putVertex(1<<16,1<<16,0); indexBuffer.put(index++);
      putVertex(1<<16,1<<16,1<<16); indexBuffer.put(index++);

      putVertex(0,0,0); indexBuffer.put(index++);
      putVertex(0,1<<16,0); indexBuffer.put(index++);

      putVertex(1<<16,0,0); indexBuffer.put(index++);
      putVertex(1<<16,1<<16,0); indexBuffer.put(index++);

      putVertex(0,0,1<<16); indexBuffer.put(index++);
      putVertex(0,1<<16,1<<16); indexBuffer.put(index++);

      putVertex(1<<16,0,1<<16); indexBuffer.put(index++);
      putVertex(1<<16,1<<16,1<<16); indexBuffer.put(index++);
      
    
    vertexBuffer.position(0);
    indexBuffer.position(0);
  }
}

Java Source Code List