Implement painting properties over TileSets

core/math/geometry_2d.h

@@ -362,6 +362,19 @@ public:
 		return (intersections & 1);
 	}
 
+	static bool is_segment_intersecting_polygon(const Vector2 &p_from, const Vector2 &p_to, const Vector<Vector2> &p_polygon) {
+		int c = p_polygon.size();
+		const Vector2 *p = p_polygon.ptr();
+		for (int i = 0; i < c; i++) {
+			const Vector2 &v1 = p[i];
+			const Vector2 &v2 = p[(i + 1) % c];
+			if (segment_intersects_segment(p_from, p_to, v1, v2, nullptr)) {
+				return true;
+			}
+		}
+		return false;
+	}
+
 	static real_t vec2_cross(const Point2 &O, const Point2 &A, const Point2 &B) {
 		return (real_t)(A.x - O.x) * (B.y - O.y) - (real_t)(A.y - O.y) * (B.x - O.x);
 	}