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Lines Matching defs:ytop

757     register short  	ytop;	    	    	/* Top of intersection */
801      * Initialize ybot and ytop.
802      * In the upcoming loop, ybot and ytop serve different functions depending
808      * ytop is the top of the next intersection between the two regions and
810      *	For an overlapping band (where the two regions intersect), ytop clips
870 	    ytop = r2->y1;
882 	    ytop = r1->y1;
886 	    ytop = r1->y1;
902 	 * intersect if ybot > ytop
906 	if (ybot > ytop)
908 	    (* overlapFunc) (newReg, r1, r1BandEnd, r2, r2BandEnd, ytop, ybot);