f(x,y), I(u,v) - [b]I[/b]sometric [b]C[/b]oordinate [b]S[/b]ystem[br]XGrid - Vertices in ICS [br]XGrid={(0,0), (1,-1), (1,-3/2), (2,-2), (5/2,-3), (2,-3), (3/2,-5/2), (1,-3), (0,-5/2), (0,-2), (-1/2,-3/2), (0,-1), (-1/2,0)}[br]YGrid - Reflected vertices in ICS [br]YGrid={(0,0), (-1,1), (-3/2,1), (-2,2), (-3,5/2), (-3,2), (-5/2,3/2), (-3,1), (-5/2,0), (-2,0), (-3/2,-1/2), (-1,0), (0,-1/2)}[br]XFig, YFig - Vertices in Cartesian Coordinates[br][br]D + reflected vertices rotate angle 210°[br]Fig_D=Polygon(D + Rotate(YFig, 210°))[br]