question about MS3D model

calaco · Post by **calaco** » Sun Oct 28, 2007 3:19 pm

how to turn the animate model(ms3d) from right-hand coordinate to left-hand coordinate

JP · Post by JP » Mon Oct 29, 2007 9:19 am

You'd have to use a modelling program or you could just rotate it in irrlicht i guess.

sio2 · Post by **sio2** » Mon Oct 29, 2007 9:49 am

This is an interesting question. To flip from RH to LH you negate Z (just concatenate the operation into your transformation matrix). If you do this though the winding order is flipped, so back- and front-facing polys become their opposite. Last time I checked, Irrlicht could only switch culling on/off and you could not specify the culling mode (front or back). You could get around this by rewriting the indices for the model in correct order for Irrlichts culling mode.

If you want to avoid all that then you need to edit the model, unless there's another trick I've missed.