- New perspective projection capability. If a camera is used as the projection object, the modifier detects whether to do perspective or orthographic projection based on the camera type. If any other object type is used as the projection object, orthographic projection is used. - Orthographic projection actually works properly now. - The projected UVs are scaled and offset so that the image is centred in the projecting camera's view. - AspX and AspY inputs have been added to control the aspect ratio of the projected UVs. Also: - I have added the Mat4MulVec3Project() function to BLI_arithb.h; this function converts a 3-dimensional vector to homogeneous coordinates (4-dimensional, with the 4th dimension set to 1), multiplies it with the given matrix, then projects it back to 3 dimensions by dividing through with the 4th dimension. This is useful when using projection matrices.