_SMINUSbitmap

_SMINUSbitmap

Perform a saturated MINUS operation between two rectangles of two bitmaps. If the minus operation returns a negative result, this result is forced to 0 (black).

ObjBitmap _SMINUSbitmap (

ObjBitmap _bitmap_

I _dx_

I _dy_

I _width_

I _height_

ObjBitmap _bitmap2_

I _sx_

I _sy_

)

Parameters

_bitmap_

any bitmap

_dx_

x destination coordinate

_dy_

y destination coordinate

_width_

width

_height_

height

_bitmap2_

any bitmap

_sx_

x source coordinate

_sy_

y source coordinate

Return value

destination bitmap

_bitmap_
	any bitmap
_dx_
	x destination coordinate
_dy_
	y destination coordinate
_width_
	width
_height_
	height
_bitmap2_
	any bitmap
_sx_
	x source coordinate
_sy_
	y source coordinate