check that all points of curve are not equal before calling recursive_bezier

diff --git a/src/vkvg_context.c b/src/vkvg_context.c
index 2ba3bee1db49227378c6ad5260fe741f11a19c12..2e4139c8015f001cde4f984cccda666bef3f6a3f 100644 (file)
--- a/src/vkvg_context.c
+++ b/src/vkvg_context.c
@@ -497,6 +497,11 @@ void vkvg_move_to (VkvgContext ctx, float x, float y)
 }
 
 void vkvg_curve_to (VkvgContext ctx, float x1, float y1, float x2, float y2, float x3, float y3) {
+       //prevent running _recursive_bezier when all 4 curve points are equal
+       if (EQUF(x1,x2) && EQUF(x2,x3) && EQUF(y1,y2) && EQUF(y2,y3)) {
+               if (_current_path_is_empty(ctx) || (EQUF(_get_current_position(ctx).x,x1) && EQUF(_get_current_position(ctx).y,y1)))
+                       return;
+       }
        _set_curve_start (ctx);
        if (_current_path_is_empty(ctx))
                _add_point(ctx, x1, y1);
@@ -1270,7 +1275,7 @@ void vkvg_render_svg (VkvgContext ctx, NSVGimage* svg, char *subId){
                for (path = shape->paths; path != NULL; path = path->next) {
                        float* p = path->pts;
                        vkvg_move_to(ctx, p[0],p[1]);
-                       for (int i = 1; i < path->npts-2; i += 3) {
+                       for (int i = 1; i < path->npts; i += 3) {
                                p = &path->pts[i*2];
                                vkvg_curve_to(ctx, p[0],p[1], p[2],p[3], p[4],p[5]);
                        }