Fixed a sign error.

git-svn-id: svn://svn.cc65.org/cc65/trunk@4448 b7a2c559-68d2-44c3-8de9-860c34a00d81

diff --git a/libsrc/tgi/tgi_arc.c b/libsrc/tgi/tgi_arc.c
index 630055abbca0c64270c26e31d3d0e734c508375e..d4bb84f2b4131120046a4a1d6553092992c6e84d 100644 (file)
--- a/libsrc/tgi/tgi_arc.c
+++ b/libsrc/tgi/tgi_arc.c
@@ -71,7 +71,7 @@ void __fastcall__ tgi_arc (int x, int y, unsigned char rx, unsigned char ry,
 
     /* Calculate the start coords */
     x1 = x + tgi_imulround (rx, cc65_cos (sa));
-    y1 = y + tgi_imulround (ry, cc65_sin (sa));
+    y1 = y - tgi_imulround (ry, cc65_sin (sa));
     do {
         sa += inc;
         if (sa >= ea) {