Android Open Source - Freebloks-Android Background Renderer

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Back to project page Freebloks-Android.

License

The source code is released under:

GNU General Public License

Java Source Code

package de.saschahlusiak.freebloks.view;
//from   w  ww  .j  a va  2 s  . com
import javax.microedition.khronos.opengles.GL10;
import javax.microedition.khronos.opengles.GL11;

import de.saschahlusiak.freebloks.view.model.Theme;


import android.content.res.Resources;
import android.graphics.Bitmap;
import android.opengl.GLUtils;

public class BackgroundRenderer extends SimpleModel {
  float rgba[] = { 0, 0, 0, 1 };
  int texture[];
  boolean hasTexture;

    final static int num_vertices = 4;
    final static int num_triangles = 2;
    final static float size = 80.0f;
    final static float textures = 15.0f;

    Theme theme;
    Resources resources;

    public BackgroundRenderer(Resources resources) {
    super(num_vertices, num_triangles);

    this.resources = resources;
    hasTexture = false;

      addVertex(-size, 0, -size, 0, 1, 0, 0, 0);
      addVertex( size, 0, -size, 0, 1, 0, textures, 0);
      addVertex( size, 0,  size, 0, 1, 0, textures, textures);
      addVertex(-size, 0,  size, 0, 1, 0, 0, textures);

      addIndex(0, 2, 1);
      addIndex(0, 3, 2);

      commit();
  }

  boolean valid = false;

  public void setTheme(Theme theme) {
    this.theme = theme;
    valid = false;
  }

  public void updateTexture(GL10 gl) {
    valid = true;
    if (theme == null) {
      rgba[0] = 0.0f; // transparent
      rgba[1] = 0.0f;
      rgba[2] = 0.0f;
      rgba[3] = 0.0f;
      hasTexture = false;
    } else if (theme.isDrawable()) {
      hasTexture = true;

      texture = new int[1];
      gl.glGenTextures(1, texture, 0);

      gl.glBindTexture(GL10.GL_TEXTURE_2D, texture[0]);
        if (gl instanceof GL11) {
        gl.glTexParameterx(GL10.GL_TEXTURE_2D, GL10.GL_TEXTURE_MIN_FILTER, GL10.GL_LINEAR_MIPMAP_LINEAR);
          gl.glTexParameterf(GL11.GL_TEXTURE_2D, GL11.GL_GENERATE_MIPMAP, GL11.GL_TRUE);
        } else {
        gl.glTexParameterx(GL10.GL_TEXTURE_2D, GL10.GL_TEXTURE_MIN_FILTER, GL10.GL_LINEAR);
          gl.glTexParameterf(GL11.GL_TEXTURE_2D, GL11.GL_GENERATE_MIPMAP, GL11.GL_FALSE);
        }
        gl.glTexParameterx(GL10.GL_TEXTURE_2D, GL10.GL_TEXTURE_MAG_FILTER, GL10.GL_LINEAR);
        FreebloksRenderer.loadKTXTexture(gl, resources, theme.getTexture());

      rgba = theme.getRGBA();
    } else {
      hasTexture = false;
      rgba = theme.getRGBA();
    }
  }

  final float specular[] = {0, 0, 0, 1};

  public void render(GL10 gl) {
    if (!valid)
      updateTexture(gl);

    if (hasTexture)
      gl.glClearColor(0.05f, 0.10f, 0.25f, 1.0f); /* the default background when textured */
    else
      gl.glClearColor(rgba[0], rgba[1], rgba[2], rgba[3]);

    gl.glClear(GL10.GL_COLOR_BUFFER_BIT | GL10.GL_DEPTH_BUFFER_BIT);

    if (hasTexture) {
//      float shininess[]={3.0f};

      gl.glMaterialfv(GL10.GL_FRONT_AND_BACK, GL10.GL_AMBIENT_AND_DIFFUSE, rgba, 0);
      gl.glMaterialfv(GL10.GL_FRONT_AND_BACK, GL10.GL_SPECULAR, specular, 0);
//      gl.glMaterialfv(GL10.GL_FRONT_AND_BACK, GL10.GL_SHININESS, shininess, 0);

      gl.glEnable(GL10.GL_TEXTURE_2D);

      gl.glBindTexture(GL10.GL_TEXTURE_2D, texture[0]);
      gl.glVertexPointer(3, GL10.GL_FLOAT, 0, getVertexBuffer());
      gl.glNormalPointer(GL10.GL_FLOAT, 0, getNormalBuffer());
      gl.glTexCoordPointer(2, GL10.GL_FLOAT, 0, getTextureBuffer());

      drawElements(gl);

      gl.glDisable(GL10.GL_TEXTURE_2D);
    }
  }
}

Java Source Code List

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