new function gfxdraw_conicTo()

diff --git a/lib/gfxtools.c b/lib/gfxtools.c
index 296bea1..2a6409b 100644 (file)
--- a/lib/gfxtools.c
+++ b/lib/gfxtools.c
@@ -454,6 +454,16 @@ static int approximate3(const cspline_t*s, qspline_t*q, int size, double quality
     return num;
 }
 
+void gfxdraw_conicTo(gfxdrawer_t*draw, double cx, double cy, double tox, double toy)
+{
+    double c1x = (draw->x + 2 * cx) / 3;
+    double c1y = (draw->y + 2 * cy) / 3;
+    double c2x = (2 * cx + tox) / 3;
+    double c2y = (2 * cy + toy) / 3;
+    gfxdraw_cubicTo(draw, c1x, c1y, c2x, c2y, tox, toy);
+}
+
+
 void gfxdraw_cubicTo(gfxdrawer_t*draw, double c1x, double c1y, double c2x, double c2y, double x, double y)
 {
     qspline_t q[128];

diff --git a/lib/gfxtools.h b/lib/gfxtools.h
index 1e9bf70..0058397 100644 (file)
--- a/lib/gfxtools.h
+++ b/lib/gfxtools.h
@@ -55,6 +55,7 @@ void gfxline_dump(gfxline_t*l, FILE*fi, char*prefix);
 void gfxline_free(gfxline_t*l);
 
 void gfxdraw_cubicTo(gfxdrawer_t*draw, double c1x, double c1y, double c2x, double c2y, double x, double y);
+void gfxdraw_conicTo(gfxdrawer_t*draw, double cx, double cy, double tox, double toy);
 
 gfxbbox_t gfxline_getbbox(gfxline_t*line);
 gfxbbox_t gfxbbox_expand_to_point(gfxbbox_t box, gfxcoord_t x, gfxcoord_t y);