Android Open Source - model-explorer Background

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Back to project page model-explorer.

License

The source code is released under:

Apache License

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Java Source Code

package com.etaoin.myopengltest.util.shapes;
/*from w  w  w.  j a  v a 2 s .  c om*/
import com.etaoin.myopengltest.util.gl.MyGLES20;

public class Background implements Drawable {

  private MyGLES20 gles20;
  private float blue;
  private boolean isBlueIncrementing;

  public Background(MyGLES20 gles20) {
    this.gles20 = gles20;
    this.blue = 0f;
    this.isBlueIncrementing = true;
  }

  @Override
  public void initialize() {
    // Empty
  }

  @Override
  public void draw(float[] vpMatrix) {
    gles20.glClear(android.opengl.GLES20.GL_COLOR_BUFFER_BIT);
    gles20.glClearColor(0.0f, 0.2f, blue, 1.0f);
    // TODO updating in a draw method *facepalm*
    calculateNextBackgroundColor();
  }

  private void calculateNextBackgroundColor() {
    blue += (isBlueIncrementing) ? 0.01f : -0.01f;
    if (blue >= 1f && isBlueIncrementing) {
      blue = 1f;
      isBlueIncrementing = false;
    } else if (blue <= 0f && !isBlueIncrementing) {
      blue = 0f;
      isBlueIncrementing = true;
    }
  }
}

Java Source Code List