Original Post
I stumbled upon a weird problem using Irrlicht with .X models exported with Blender. The models are animated with armatures/bones. Loading and displaying them works fine. But when I tried attaching child objects to the bones (for example a weapon to the left hand etc) the translations and rotations came out wrong (mirrored along some but not all axises).
After some experiments I found out that when I export the models for a right-handed coordinate system it suddenly works and the child objects are translated and rotated correctly. But since Irrlicht uses a left-handed system now the models and bones are mirrored (left side of the original model is now it's right side). Which is not nice.
Currently I'm trying to figure out if this is a problem with Blender's DirectX exporter or with Irrlicht and what to do about it. I already asked in the Irrlicht forum, but I thought I might as well give it a try here because I assume other devs might have had the same problem. I didn't try it out yet, but I've had the idea to manually regenerate the meshes as left-handed inside Irrlicht and just rename the bones (switch L with R); mirroring the animated armatures inside Blender is not such a big deal. But all this would be just a workaround and I'm looking for a proper solution and also want to find out what's happening.
After some experiments I found out that when I export the models for a right-handed coordinate system it suddenly works and the child objects are translated and rotated correctly. But since Irrlicht uses a left-handed system now the models and bones are mirrored (left side of the original model is now it's right side). Which is not nice.
Currently I'm trying to figure out if this is a problem with Blender's DirectX exporter or with Irrlicht and what to do about it. I already asked in the Irrlicht forum, but I thought I might as well give it a try here because I assume other devs might have had the same problem. I didn't try it out yet, but I've had the idea to manually regenerate the meshes as left-handed inside Irrlicht and just rename the bones (switch L with R); mirroring the animated armatures inside Blender is not such a big deal. But all this would be just a workaround and I'm looking for a proper solution and also want to find out what's happening.
