-
- double area = fabs (_points[j].x * (_points[j].y - p.y)) +
- (_points[i].x * (p.y - _points[j].y)) +
- (p.x * (_points[j].y - _points[i].y));
- if (area < 0.001) {
+
+ a.x = std::min (a.x, visible.x1);
+ a.y = std::min (a.y, visible.y1);
+ b.x = std::min (b.x, visible.x1);
+ b.y = std::min (b.y, visible.y1);
+
+ double d = distance_to_segment_squared (p, a, b, t, at);
+
+ if (t < 0.0 || t > 1.0) {
+ continue;
+ }
+
+ if (d < _threshold + _outline_width) {