Questions tagged [quaternion]
The quaternion tag has no usage guidance.
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How to recalculate pose bone rotations when armature bone rotation is changed?
I'm trying to import bones and animation data in to blender. The quaternions I have for each keyframe are correct if the armature's bones do not have any rotation. However I also need to import the ...
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Unable to reproduce armature bone rotations from .bvh import
I am trying to format the bone rotations of an armature in the way they are formatted inside of a .bvh mocap file. I thought I would be able to obtain the 3D Euler rotations as they seem to be written ...
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Can you split all connected bones and change them all to a ''keep offset'' parent automatically in a rig?
Like I do here, but automatically.
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Set two objects with the same rotation quaternion but their rotation euler are different
As far as I understand, Euler angles and quaternions are two approaches for rotation. So I suppose that if the directions of two objects are set by the same quaternion then their Euler angles are ...
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Problem with weird rotations of objects moving along Mobius strip paths (animated using Blender Python API)
This is a follow up question to my previous one regarding objects moving in a circle (which was a simple test case I had put together). I really appreciate the answer and detailed explanation provided ...
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Animating multiple objects moving along a path with the right orientations (using bpy and Python)
I am a bit of a Blender novice and started getting into Blender using the Blender Python API (bpy). I am trying to animate multiple objects on a set of paths defined by mathematical equations (the ...
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How to set the axis of blender so that it is consistent with the rotation direction of the sensor？
I am a beginner in blender. I use the serial port to connect the posture sensor with the blender. Now I have a problem: I rotate sensor around the Z axis, but in blender it rotates around the Y axis. ...
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Incomplete rotation from imported FBX
I'm trying to import an fbx to Blender, with one simple animation (exported from Moho).
When I export it from Moho, I can open it in tools such as FBX Converter and Windows 3D viewer, and the ...
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Blender import camera from COLMAP has wrong direction
I have the image.txt files from colmap, which includes the quaterion(QW, QX, Qy, QZ) and the translation(tx, ty, yz). I use the following code to do the transformation, but the direction of the camera ...
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Cameras with opposite positions
I have a series of camera data, including the quaternion and position. When I create cameras, I found the position of all the cameras are in the opposite direction (The starting point and the ending ...
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Given an object with two locations and orientations, how do I find the rotation axis?
I have an object that I want to animate between two orientations (and locations). I know that rotation axis is close to one end of the object, but not exactly where. How can I figure out where the ...
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Is there a way to make blender use slerp interpolation when keyframing a rotation using quaternion?
I'm trying to get constant interpolation between keyframes when I rotate a bone or object using quaternion.
I already tried linear interpolation mode, however it still does not automatically give ...
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Transfer orientation of points to bone armature
I am trying to transfer position of 2 points into a bone, so that the bone has the same direction as the 2 points
I tried it with this initial position
this is the output after running the code
this ...
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How to properly combine Rotation Quaternion with Matrix for viewport/RegionView3D manipulation?
(Copy and pasted it from another place since I wasnt getting any replies)
Hi,
I am working on an addon that uses external application's touch gesture to send information to a socket, which then is ...