From: Ben Harris <bjh21@bjh21.me.uk>
Date: Sat, 2 Nov 2024 19:25:41 +0000 (+0000)
Subject: Combine successive rlineto operators
X-Git-Tag: bedstead-3.246~65
X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~bjharris/git?a=commitdiff_plain;h=e3eae733ee8699f3b3b4d9a61a08f62ac1429fa9;p=bedstead.git

Combine successive rlineto operators

In a Type 2 charstring, an rlineto operator can take up to 24 pairs of
co-ordinates, so most contours need only one rmoveto and one rlineto.
---

diff --git a/bedstead.c b/bedstead.c
index c1ee06a..2b80a3b 100644
--- a/bedstead.c
+++ b/bedstead.c
@@ -3570,18 +3570,22 @@ static void
 emit_contour(point *p0)
 {
 	point *p = p0, *p1;
+	int stacksize = 0;
 
 	if (p->prev) p->prev->next = NULL; /* Break the loop. */
 	do {
+		stacksize += 2;
 		printf(" %g %g %s\n",
 		       (double)(p->v.x - cur.x) / XSCALE,
 		       (double)(p->v.y - cur.y) / YSCALE,
-		       p == p0 && p->next ? "rmoveto" : "rlineto");
+		       p == p0 ? "rmoveto" : stacksize >= 48 ? "rlineto" : "");
+		stacksize %= 48;
 		cur = p->v;
 		p1 = p->next;
 		p->prev = p->next = NULL;
 		p = p1;
 	} while (p);
+	if (stacksize != 0) printf("rlineto\n");
 }
 
 static void