support parallelogram map #4302

Is your feature request related to a problem? Please describe.

The map is composed of many parallelograms pieced together.

like these :

and the parallelogram map also could be use for the wall in isometric map , like this:
(the yellow plane is the wall)

.

Describe the solution you'd like.

add a new map type parallelogram

Describe alternatives you've considered.

No response