public void changeCooridnateSystem(int newWidth, int newHeight, int rotation) {
float animationScaleX =
(float) Math.min(newWidth, newHeight) / Math.min(mPreviewWidth, mPreviewHeight);
float animationScaleY =
(float) Math.max(newWidth, newHeight) / Math.max(mPreviewWidth, mPreviewHeight);
// keep original centerX and centerY
float centerX = centerX();
float centerY = centerY();
float tempValue;
switch (rotation) {
case 0:
break;
case 90:
tempValue = centerX;
centerX = centerY;
centerY = mPreviewWidth - tempValue;
break;
case 180:
if (FeatureSwitcher.isTablet()) {
centerX = mPreviewWidth - centerX;
centerY = mPreviewHeight - centerY;
}
break;
case 270:
tempValue = centerX;
centerX = mPreviewHeight - centerY;
centerY = tempValue;
break;
}
// translate to new coordinate system
translate(centerX - centerX(), centerY - centerY(), false);
// translate from old renderer coordinate system to new renderer coordinate system
translate(centerX * animationScaleX - centerX, centerY * animationScaleY - centerY, false);
// scale by animationScaleX
scale(animationScaleX, false);
// scale to translate by animationScaleY / animationScaleX to match correct top distance
scaleToTranslateY(animationScaleY / animationScaleX);
// compute rotation
// rotate(-rotation);
float rotationRotate = formatRotationValue(360 - rotation);
// rotationRotate = AnimationRect.checkRotationLimit(rotationRotate,
// mCurrentRotationValue);
// rotate by current orienation
rotate(mCurrentRotationValue + rotationRotate);
// rotate(rotationRotate);
}
public void rotate(float degrees) {
rotate(degrees, mRectF.centerX(), mRectF.centerY());
}