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libmemdraw: cleanup fillpoly(), remove unused fillcolor hack

--- a/libmemdraw/fillpoly.c

+++ b/libmemdraw/fillpoly.c

@@ -27,18 +27,6 @@

 static	void	yscan(Memimage *dst, Seg **seg, Seg *segtab, int nseg, int wind, Memimage *src, Point sp, int, int);

 static void

-fillcolor(Memimage *dst, int left, int right, int y, Memimage *src, Point p)

-{

-	int srcval;

-

-	USED(src);

-	srcval = p.x;

-	p.x = left;

-	p.y = y;

-	memset(byteaddr(dst, p), srcval, right-left);

-}

-

-static void

 fillline(Memimage *dst, int left, int right, int y, Memimage *src, Point p, int op)

 {

 	Rectangle r;

@@ -165,26 +153,9 @@

 	Seg **ep, **next, **p, **q, *s;

 	long n, i, iy, cnt, ix, ix2, minx, maxx;

 	Point pt;

-	void	(*fill)(Memimage*, int, int, int, Memimage*, Point, int);

-	fill = fillline;

-/*

- * This can only work on 8-bit destinations, since fillcolor is

- * just using memset on sp.x.

- *

- * I'd rather not even enable it then, since then if the general

- * code is too slow, someone will come up with a better improvement

- * than this sleazy hack.	-rsc

- *

-	if(clipped && (src->flags&Frepl) && src->depth==8 && Dx(src->r)==1 && Dy(src->r)==1) {

-		fill = fillcolor;

-		sp.x = membyteval(src);

-	}

- *

- */

 	USED(clipped);

-

 	for(i=0, s=segtab, p=seg; i<nseg; i++, s++) {

 		*p = s;

 		if(s->p0.y == s->p1.y)

@@ -300,7 +271,7 @@

 				ix = (x + x2) >> (fixshift+1);

 				ix2 = ix+1;

 			}

-			(*fill)(dst, ix, ix2, iy, src, sp, op);

+			fillline(dst, ix, ix2, iy, src, sp, op);

 		}

 		y += (1<<fixshift);

 		iy++;