FlipAnimation.java 文件源码

@Override
protected void applyTransformation(float interpolatedTime, Transformation t) {
    float degrees = fromDegrees + ((toDegrees - fromDegrees) * interpolatedTime);
    final Matrix matrix = t.getMatrix();

    final Camera camera = mCamera;
    camera.save();

    camera.rotateY(degrees);
    camera.getMatrix(matrix);

    camera.restore();

    matrix.preTranslate(-centerX, -centerY);
    matrix.postTranslate(centerX, centerY);
}