Map Tiles Visible

by BostonBrooks   Last Updated September 25, 2017 07:13 AM

I have an isometric map broken up into terrain tiles. the area of the map on-screen is given by a rectangle rotated 45 degrees (in red below).

Given the position of the corners of the visible rectangle, how would I go about iterating over all visible tiles (shaded), such that no tile down or to the right of tile A is iterated upon before tile A

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