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Commit a7db519d authored by Scott Main's avatar Scott Main Committed by Android Git Automerger
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am 24a32c98: am e0a85960: am 9a0087f2: Merge "docs: OpenGL Training sample... 

am 24a32c98: am e0a85960: am 9a0087f2: Merge "docs: OpenGL Training sample code fixes" into jb-mr2-docs

* commit '24a32c98':
  docs: OpenGL Training sample code fixes
parents badb063c 24a32c98

docs/html/training/graphics/opengl/motion.jd

+3 −3
Original line number Diff line number Diff line
@@ -47,7 +47,7 @@ to a shape with rotation.</p> 


<p>Rotating a drawing object with OpenGL ES 2.0 is relatively simple. You create another

transformation matrix (a rotation matrix) and then combine it with your projection and

camera view tranformation matrices:</p>

camera view transformation matrices:</p>



<pre>

private float[] mRotationMatrix = new float[16];
@@ -56,7 +56,7 @@ public void onDrawFrame(GL10 gl) { 
    // Create a rotation transformation for the triangle

    long time = SystemClock.uptimeMillis() % 4000L;

    float angle = 0.090f * ((int) time);

    Matrix.setRotateM(mRotationMatrix, 0, mAngle, 0, 0, -1.0f);

    Matrix.setRotateM(mRotationMatrix, 0, angle, 0, 0, -1.0f);



    // Combine the rotation matrix with the projection and camera view

    Matrix.multiplyMM(mMVPMatrix, 0, mRotationMatrix, 0, mMVPMatrix, 0);