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Quaternions are non-commutative, so some equivalences e.g. `(a * b) (b * a)` are not sound.
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Compare the naming of methods in the QuadraticForm class for consistency with other Sage naming conventions. In particular, it would be nice if there were a set of standard variable substitution me…
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I believe this was previously noticed by @djeedai in the review of the `Animatable` trait rollout.
I am not an expert in this subject, but here is my understanding.
## Context
In additive ani…
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This would be strictly a change of naming convention in the code.
Quaternions currently have 3 functions called RotationU, RotationV, and RotationN.
What would you expect they do based on the na…
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Hello Kris,
First of all, thanks for this old but very useful library.
Is it possible to use the MadgwickQuaternionUpdate without Accel inputs?
I am in the process of creating a model rocke…
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bc.. See this thread for all info and some code: http://groups.google.com/group/sympy/browse_thread/thread/77fde8d80a6a57be
p. Original issue for "#4237":https://github.com/sympy/sympy/issues/4237: "…
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Apparently, it is not possible to transform the `tf2::Quaternion`, `tf2::Vector3`, `tf2::Pose`, etc. data types via `doTransform` (or `transform`). Is there a specific reason for that?
I see that for…
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#### Rajawali Version or Branch
version : org.rajawali3d:rajawali:1.1.970
#### Summary
I try to port some codes based on glm ( (http://glm.g-truc.net/0.9.8/index.html) to using Rajawali.
…
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After seeing [this post on ROS Dicourse](https://discourse.ros.org/t/release-of-dual-quaternions/15911) and the comments asking for a c++ implementation, I wondered if 'Unit Dual Quaternions' (`DH_u` …
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Is it possible to define some sort of blacklist in sympy? Problem: I have a class, say `class Octionion(Quaternion)` which uses sympy.Quaternion. In my program I have
`u = Quaternion(2,3)*a`
whe…