Popisint ps_begin_pattern ( resource psdoc, float width, float height, float xstep, float ystep, int painttype )
Starts a new pattern. A pattern is like a page containing e.g. a drawing which can be used for filling areas. It is used like a color by calling ps_setcolor() and setting the color space to pattern.
Resource identifier of the postscript file as returned by ps_new().
The width of the pattern in pixel.
The height of the pattern in pixel.
The distance in pixel of placements of the pattern in horizontal direction.
The distance in pixel of placements of the pattern in vertical direction.
Must be 1 or 2.