How To Use Quaternion In Blender
When you select the quaternion mode in blender the xyzw components describe a normalized quaternion.
How to use quaternion in blender. I am writing a blender exporter for my scene format. Comparison operators can be done. I tried testing it out briefly using the xyz eulers and didn t notice any issues or problems. My temporary solution current looks like. I already use the info window when figuring out how to script things with blender but how would this help me extrude bones that default to something other than a quaternion rotation mode.
1 in computers everything is represented by numbers. Math can be performed on quaternion classes. It will show you most of the python you need to do. Open blender delete the default cube add a monkey and switch the rotation mode to quaternion i know not much of a challenge yet for most of you but wait fill in the w x y z fields so that suzanne rotates 180 around the axis that goes through 0 0 0 and 3 4 5. That should get you started.
When exporting i need the rotation as quaternion. Use the info window while doing what you want to do by hand. The cpp project comes from the basic tracking samples that outputs text in the console for the palm. Ok thanks for the info. The problem is in blender you cannot switch back to quaternions once you started using eulers for the animations unless you want to re do the animations.
Numbers make up everything we do on computers including blender. In blender the bones are configured to use quaternion rotation so ithought it was just a matter of finding the correct axis but it seems the values arent in the same range or i didnt find the good axis combination yet. This object gives access to quaternions in blender. Quaternions are 3d rotations performed by the multiplication of quaternions. Before explaining how these rotations work we ll need to define a few terms first.
The easiest way i found is to use the rotation quaternion but this member only guarantees to store the rotation when the rotation mode is set to quaternion.