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("}"); }