Merge pull request #39981 from madmiraal/fix-39919-3.2

[3.2] Fix CSG Visual Bug.

modules/csg/csg.cpp

@@ -524,7 +524,7 @@ void CSGBrushOperation::MeshMerge::_add_distance(List<real_t> &r_intersectionsA,
 
 	// Check if distance exists.
 	for (const List<real_t>::Element *E = intersections.front(); E; E = E->next())
-		if (Math::abs(**E - p_distance) < vertex_snap) return;
+		if (Math::is_equal_approx(**E, p_distance)) return;
 
 	intersections.push_back(p_distance);
 }
@@ -1066,15 +1066,6 @@ void CSGBrushOperation::Build2DFaces::_find_edge_intersections(const Vector2 p_s
 					break;
 				}
 
-				// Don't create degenerate triangles.
-				Vector2 split_edge1[2] = { vertices[new_vertex_idx].point, edge_points[0] };
-				Vector2 split_edge2[2] = { vertices[new_vertex_idx].point, edge_points[1] };
-				Vector2 new_edge[2] = { vertices[new_vertex_idx].point, vertices[opposite_vertex_idx].point };
-				if (are_segements_parallel(split_edge1, new_edge, vertex_snap2) &&
-						are_segements_parallel(split_edge2, new_edge, vertex_snap2)) {
-					break;
-				}
-
 				// If opposite point is on the segemnt, add its index to segment indices too.
 				Vector2 closest_point = Geometry::get_closest_point_to_segment_2d(vertices[opposite_vertex_idx].point, p_segment_points);
 				if ((closest_point - vertices[opposite_vertex_idx].point).length_squared() < vertex_snap2)