Flip3DAnimation.java 文件源码

@Override
protected void applyTransformation(final float interpolatedTime, final Transformation t) {
    final float fromDegrees = mFromDegrees;
    final float degrees = fromDegrees + (mToDegrees - fromDegrees) * interpolatedTime;

    final float centerX = mCenterX;
    final float centerY = mCenterY;
    final Camera camera = mCamera;

    final Matrix matrix = t.getMatrix();

    camera.save();

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

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