idTech4.Geometry.idWinding.GetPlane C# (CSharp) Method

		public Plane GetPlane()
		{
			if(_pointCount < 3)
			{
				return new Plane();
			}

			Vector3 center = this.Center;
			Vector3 v = new Vector3(_points[0, 0], _points[0, 1], _points[0, 2]);
			Vector3 v1 = v - center;
			Vector3 v2 = new Vector3(_points[1, 0], _points[1, 1], _points[1, 2]) - center;


			Plane plane = new Plane();
			plane.Normal = Vector3.Cross(v2, v1);
			plane.Normalize();

			Vector3 tmp = plane.Normal * v;

			plane.D = tmp.X + tmp.Y + tmp.Z;

			return plane;
		}

		private void ParseInterAreaPortals(idLexer lexer)
		{
			lexer.ExpectTokenString("{");

			_portalAreaCount = lexer.ParseInt();

			if(_portalAreaCount < 0)
			{
				lexer.Error("ParseInterAreaPortals: bad portalAreaCount");
			}

			_portalAreas = new PortalArea[_portalAreaCount];
			_areaScreenRect = new idScreenRect[_portalAreaCount];

			for(int i = 0; i < _portalAreaCount; i++)
			{
				_portalAreas[i] = new PortalArea();
				_areaScreenRect[i] = new idScreenRect();
			}

			// set the doubly linked lists
			SetupAreaReferences();

			_interAreaPortalCount = lexer.ParseInt();

			if(_interAreaPortalCount < 0)
			{
				lexer.Error("ParseInterAreaPortals: bad interAreaPortalCount");
			}

			_doublePortals = new DoublePortal[_interAreaPortalCount];

			for(int i = 0; i < _interAreaPortalCount; i++)
			{
				_doublePortals[i] = new DoublePortal();

				int pointCount = lexer.ParseInt();
				int a1 = lexer.ParseInt();
				int a2 = lexer.ParseInt();

				idWinding w = new idWinding(pointCount);

				for(int j = 0; j < pointCount; j++)
				{
					float[] tmp = lexer.Parse1DMatrix(3);

					w[j,0] = tmp[0];
					w[j,1] = tmp[1];
					w[j,2] = tmp[2];

					// no texture coordinates
					w[j,3] = 0;
					w[j,4] = 0;
				}

				// add the portal to a1
				Portal p = new Portal();
				p.IntoArea = a2;
				p.DoublePortal = _doublePortals[i];
				p.Winding = w;
				p.Plane = w.GetPlane();
				p.Next = _portalAreas[a1].Portals;

				_portalAreas[a1].Portals = p;
				_doublePortals[i].Portals[0] = p;

				// reverse it for a2
				p = new Portal();
				p.IntoArea = a1;
				p.DoublePortal = _doublePortals[i];
				p.Winding = w.Reverse();
				p.Plane = w.GetPlane();
				p.Next = _portalAreas[a2].Portals;

				_portalAreas[a2].Portals = p;
				_doublePortals[i].Portals[1] = p;
			}

			lexer.ExpectTokenString("}");
		}