isomap
Messing around with isometric rendering of tilemaps
Pictures, thousand words, moving pictures, million words, too lazy to write stuff: https://www.youtube.com/playlist?list=PLuIL7KwA2a53EAfejN-ERK6-QZ0k6V1Ug
Feel free to use any code you see for whatever purpose, just don't expect any support. Code is messy, ugly and unoptimized so be warned.