Android Open Source - RollOverSphere---a-simple-libgdx-game Cube Mesh With Normals

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Back to project page RollOverSphere---a-simple-libgdx-game.

License

The source code is released under:

MIT License

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Java Source Code

package com.igorcrevar.rolloverchuck.mesh;
//from  w  ww .j  ava 2s  .c o  m
import com.badlogic.gdx.graphics.Color;
import com.badlogic.gdx.graphics.GL20;
import com.badlogic.gdx.graphics.Mesh;
import com.badlogic.gdx.graphics.VertexAttribute;
import com.badlogic.gdx.graphics.glutils.ShaderProgram;
import com.igorcrevar.rolloverchuck.GameData;

public class CubeMeshWithNormals implements IMesh {
private Mesh mesh;
  
  public CubeMeshWithNormals(GameData gameData) {
    mesh = getMesh(0.5f);
  }
  
  @Override
  public void draw(ShaderProgram shaderProgram) {
    mesh.render(shaderProgram, GL20.GL_TRIANGLES);
  }

  @Override
  public void dispose() {
    mesh.dispose();
  }

  private Mesh getMesh(float size) {
    short[] indices = new short[36];
    int index = 0;
    for (int i = 0; i < 6; ++i) {
      indices[index++] = (short)(i * 4);
      indices[index++] = (short)(i * 4 + 1);
      indices[index++] = (short)(i * 4 + 3);
      indices[index++] = (short)(i * 4 + 0);
      indices[index++] = (short)(i * 4 + 3);
      indices[index++] = (short)(i * 4 + 2);
    }
  
    float color = Color.toFloatBits(255, 255, 255, 255);
    float[] vertices = new float[] {
      -size, -size,  size, color, 0.0f, 0.0f, 1.0f,
             size, -size,  size, color, 0.0f, 0.0f, 1.0f,
            -size,  size,  size, color, 0.0f, 0.0f, 1.0f,
             size,  size,  size, color, 0.0f, 0.0f, 1.0f,

             size, -size,  size, color, 1.0f, 0.0f, 0.0f,
             size, -size, -size, color, 1.0f, 0.0f, 0.0f,        
             size,  size,  size, color, 1.0f, 0.0f, 0.0f,
             size,  size, -size, color, 1.0f, 0.0f, 0.0f,

             size, -size, -size, color, 0.0f, 0.0f, -1.0f,
            -size, -size, -size, color, 0.0f, 0.0f, -1.0f,           
             size,  size, -size, color, 0.0f, 0.0f, -1.0f,
            -size,  size, -size, color, 0.0f, 0.0f, -1.0f,

            -size, -size, -size, color, -1.0f, 0.0f, 0.0f,
            -size, -size,  size, color, -1.0f, 0.0f, 0.0f,        
            -size,  size, -size, color, -1.0f, 0.0f, 0.0f,
            -size,  size,  size, color, -1.0f, 0.0f, 0.0f,

            -size, -size, -size, color, 0.0f, -1.0f, 0.0f,
             size, -size, -size, color, 0.0f, -1.0f, 0.0f,        
            -size, -size,  size, color, 0.0f, -1.0f, 0.0f,
             size, -size,  size, color, 0.0f, -1.0f, 0.0f,

            -size,  size,  size, color, 0.0f, 1.0f, 0.0f,
             size,  size,  size, color, 0.0f, 1.0f, 0.0f,          
            -size,  size, -size, color, 0.0f, 1.0f, 0.0f,
             size,  size, -size, color, 0.0f, 1.0f, 0.0f,};
     
    // populate normal also
        Mesh newMesh = new Mesh(true, vertices.length / 7, indices.length, VertexAttribute.Position(), VertexAttribute.Color(), VertexAttribute.Normal());
        newMesh.setVertices(vertices);
        newMesh.setIndices(indices);
        return newMesh;
  }
}

Java Source Code List