public void SetUVCoord(Vector2 lowerleft, Vector2 dimensions)
{
mLowerLeftUV = lowerleft;
mUVDimensions = dimensions;
XftTools.TopLeftUVToLowerLeft(ref mLowerLeftUV, ref mUVDimensions);
}
public void SetUVCoord(Vector2 lowerleft, Vector2 dimensions)
{
LowerLeftUV = lowerleft;
UVDimensions = dimensions;
XftTools.TopLeftUVToLowerLeft(ref LowerLeftUV, ref UVDimensions);
UVChanged = true;
}
public void SetUVCoord(Vector2 lowerleft, Vector2 dimensions)
{
// change to lower left coord.
LowerLeftUV = lowerleft;
UVDimensions = dimensions;
XftTools.TopLeftUVToLowerLeft(ref LowerLeftUV, ref UVDimensions);
}
//注意这里有点乱，与Sprite，CustomMesh这些不一样，UV计算是自定义的。
//所以先全局坐标转换为lower left后，还需要局部转换。
public void SetUVCoord(Vector2 topleft, Vector2 dimensions)
{
LowerLeftUV = topleft;
UVDimensions = dimensions;
XftTools.TopLeftUVToLowerLeft(ref LowerLeftUV, ref UVDimensions);
//注意这里还需颠倒UV。这里是局部坐标转换
//还原为从顶部开始
LowerLeftUV.y -= dimensions.y;
UVDimensions.y = -UVDimensions.y;
UVChanged = true;
}