diff options
Diffstat (limited to 'src/vertex-clipping.c')
| -rw-r--r-- | src/vertex-clipping.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/src/vertex-clipping.c b/src/vertex-clipping.c index db527e14..2bb8c0ab 100644 --- a/src/vertex-clipping.c +++ b/src/vertex-clipping.c @@ -206,6 +206,9 @@ clip_polygon_left(struct clip_context *ctx, const struct polygon8 *src, enum path_transition trans; int i; + if (src->n < 2) + return 0; + clip_context_prepare(ctx, src, dst_x, dst_y); for (i = 0; i < src->n; i++) { trans = path_transition_left_edge(ctx, src->x[i], src->y[i]); @@ -222,6 +225,9 @@ clip_polygon_right(struct clip_context *ctx, const struct polygon8 *src, enum path_transition trans; int i; + if (src->n < 2) + return 0; + clip_context_prepare(ctx, src, dst_x, dst_y); for (i = 0; i < src->n; i++) { trans = path_transition_right_edge(ctx, src->x[i], src->y[i]); @@ -238,6 +244,9 @@ clip_polygon_top(struct clip_context *ctx, const struct polygon8 *src, enum path_transition trans; int i; + if (src->n < 2) + return 0; + clip_context_prepare(ctx, src, dst_x, dst_y); for (i = 0; i < src->n; i++) { trans = path_transition_top_edge(ctx, src->x[i], src->y[i]); @@ -254,6 +263,9 @@ clip_polygon_bottom(struct clip_context *ctx, const struct polygon8 *src, enum path_transition trans; int i; + if (src->n < 2) + return 0; + clip_context_prepare(ctx, src, dst_x, dst_y); for (i = 0; i < src->n; i++) { trans = path_transition_bottom_edge(ctx, src->x[i], src->y[i]); |