/**
* Signals the game object to update its model transformation matrix. The transformations are only
* actually updated if the object was modified.
*/
private void updateTransformations() {
if (mDirty) {
mModelMatrix.setIdentity();
mModelMatrix.translate(TMP_VEC3.set(mPosition).add(mPivot));
mModelMatrix.translate(TMP_VEC3.set(mPivot).negate());
switch (mRotationMode) {
case XYZ:
mModelMatrix.rotateX(mRotation.x);
mModelMatrix.rotateY(mRotation.y);
mModelMatrix.rotateZ(mRotation.z);
break;
case XZY:
mModelMatrix.rotateX(mRotation.x);
mModelMatrix.rotateZ(mRotation.z);
mModelMatrix.rotateY(mRotation.y);
break;
case YXZ:
mModelMatrix.rotateY(mRotation.y);
mModelMatrix.rotateX(mRotation.x);
mModelMatrix.rotateZ(mRotation.z);
break;
case YZX:
mModelMatrix.rotateY(mRotation.y);
mModelMatrix.rotateX(mRotation.z);
mModelMatrix.rotateZ(mRotation.x);
break;
case ZXY:
mModelMatrix.rotateZ(mRotation.z);
mModelMatrix.rotateX(mRotation.x);
mModelMatrix.rotateY(mRotation.y);
break;
case ZYX:
mModelMatrix.rotateZ(mRotation.z);
mModelMatrix.rotateY(mRotation.y);
mModelMatrix.rotateX(mRotation.x);
break;
}
mModelMatrix.scale(mScale);
mModelMatrix.translate(mPivot);
mDirty = false;
}
}
/**
* Sets the anchor point of this game object, between 0;0 and 1;1, where 0;0 is top-left and 1;1
* is bottom-right.
*
* @param anchorPoint the anchor point to set
*/
@Override
public final void setAnchorPoint(final Vector2 anchorPoint) {
mAnchorPoint.set(anchorPoint);
mPivot.set(-mSize.x * mAnchorPoint.x, -mSize.y * mAnchorPoint.y, 0);
mDirty = true;
}
public final void setScale(Vector3 scale) {
mScale.set(scale);
mDirty = true;
}
@Override
public final void setRotation(final Vector3 rotation) {
mRotation.set(rotation);
mDirty = true;
}
@Override
public final void setPosition(final Vector3 position) {
mPosition.set(position);
mDirty = true;
}