From ed6224024ee603ae5cd7ba910691858549d38388 Mon Sep 17 00:00:00 2001
From: clifford <clifford@b57f626f-c46c-0410-a088-ec61d464b74c>
Date: Tue, 30 Jun 2009 18:19:57 +0000
Subject: Clifford Wolf: 	Fixed cylinder primitive with r1 = 0 or r2 = 0
 for CGAL

git-svn-id: http://svn.clifford.at/openscad/trunk@40 b57f626f-c46c-0410-a088-ec61d464b74c

diff --git a/primitives.cc b/primitives.cc
index ae43a58..6954e87 100644
--- a/primitives.cc
+++ b/primitives.cc
@@ -294,14 +294,18 @@ sphere_next_r2:
 		
 		for (int i=0; i<fragments; i++) {
 			int j = (i+1) % fragments;
-			p->append_poly();
-			p->insert_vertex(circle1[i].x, circle1[i].y, z1);
-			p->insert_vertex(circle2[i].x, circle2[i].y, z2);
-			p->insert_vertex(circle1[j].x, circle1[j].y, z1);
-			p->append_poly();
-			p->insert_vertex(circle2[i].x, circle2[i].y, z2);
-			p->insert_vertex(circle2[j].x, circle2[j].y, z2);
-			p->insert_vertex(circle1[j].x, circle1[j].y, z1);
+			if (r1 > 0) {
+				p->append_poly();
+				p->insert_vertex(circle1[i].x, circle1[i].y, z1);
+				p->insert_vertex(circle2[i].x, circle2[i].y, z2);
+				p->insert_vertex(circle1[j].x, circle1[j].y, z1);
+			}
+			if (r2 > 0) {
+				p->append_poly();
+				p->insert_vertex(circle2[i].x, circle2[i].y, z2);
+				p->insert_vertex(circle2[j].x, circle2[j].y, z2);
+				p->insert_vertex(circle1[j].x, circle1[j].y, z1);
+			}
 		}
 
 		if (r1 > 0) {
-- 
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