Which isometric angles can be mirrored (and otherwise transformed) for optimization?

Posted by Tom on Game Development See other posts from Game Development or by Tom
Published on 2012-10-02T21:40:29Z Indexed on 2012/10/03 9:51 UTC
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Filed under:

sprites

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rendering

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isometric

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optimization

I am working on a basic isometric game, and am struggling to find the correct mirrors.

Mirror can be any form of transform.

I have managed to get SE out of SW, by scaling the sprite on X axis by -1. Same applies for NE angle.

Something is bugging me, that I should be able to also mirror N to S, but I cannot manage to pull this one off.

Am I just too sleepy and trying to do the impossible, or a basic -1 scale on Y axis is not enough?

What are the common used mirror table for optimizing 8 angle (N, NE, E, SE, S, SW, W, NW) isometric sprites?

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