FarseerPhysics.Common.TextureTools.TextureConverter.splitPolygonEdge C# (CSharp) Метод

		bool splitPolygonEdge( Vertices polygon, Vector2 coordInsideThePolygon, out int vertex1Index, out int vertex2Index )
		{
			Vector2 slope;
			int nearestEdgeVertex1Index = 0;
			int nearestEdgeVertex2Index = 0;
			bool edgeFound = false;

			float shortestDistance = float.MaxValue;

			bool edgeCoordFound = false;
			Vector2 foundEdgeCoord = Vector2.Zero;

			List<float> xCoords = searchCrossingEdges( polygon, (int)coordInsideThePolygon.Y );

			vertex1Index = 0;
			vertex2Index = 0;

			foundEdgeCoord.Y = coordInsideThePolygon.Y;

			if( xCoords != null && xCoords.Count > 1 && xCoords.Count % 2 == 0 )
			{
				float distance;
				for( int i = 0; i < xCoords.Count; i++ )
				{
					if( xCoords[i] < coordInsideThePolygon.X )
					{
						distance = coordInsideThePolygon.X - xCoords[i];

						if( distance < shortestDistance )
						{
							shortestDistance = distance;
							foundEdgeCoord.X = xCoords[i];

							edgeCoordFound = true;
						}
					}
				}

				if( edgeCoordFound )
				{
					shortestDistance = float.MaxValue;

					int edgeVertex2Index = polygon.Count - 1;

					int edgeVertex1Index;
					for( edgeVertex1Index = 0; edgeVertex1Index < polygon.Count; edgeVertex1Index++ )
					{
						Vector2 tempVector1 = polygon[edgeVertex1Index];
						Vector2 tempVector2 = polygon[edgeVertex2Index];
						distance = LineTools.distanceBetweenPointAndLineSegment( ref foundEdgeCoord,
																				ref tempVector1, ref tempVector2 );
						if( distance < shortestDistance )
						{
							shortestDistance = distance;

							nearestEdgeVertex1Index = edgeVertex1Index;
							nearestEdgeVertex2Index = edgeVertex2Index;

							edgeFound = true;
						}

						edgeVertex2Index = edgeVertex1Index;
					}

					if( edgeFound )
					{
						slope = polygon[nearestEdgeVertex2Index] - polygon[nearestEdgeVertex1Index];
						slope.Normalize();

						Vector2 tempVector = polygon[nearestEdgeVertex1Index];
						distance = Vector2.Distance( tempVector, foundEdgeCoord );

						vertex1Index = nearestEdgeVertex1Index;
						vertex2Index = nearestEdgeVertex1Index + 1;

						polygon.Insert( nearestEdgeVertex1Index, distance * slope + polygon[vertex1Index] );
						polygon.Insert( nearestEdgeVertex1Index, distance * slope + polygon[vertex2Index] );

						return true;
					}
				}
			}

			return false;
		}