quaternions

Quaternions, which extend imaginary numbers into a further dimension, began to be developed by William Hamilton in Dublin in 1843.
1843年，威廉•汉密尔顿（WilliamHamilton）在都柏林发明了四元数，将虚数扩展到四维空间。
W component of the Quaternion. Don't modify this directly unless you know quaternions inside out.
四元数的W组件。不要直接修改这个，除非你很了解四元数。
Of course, you'll also need to be able to convert from "conventional" representations to quaternions.
当然，你可能也会用到四元数转换的“常规”表示法。
Only the bone data needs to be stored for every frame of the animation. Usually, the bone data is represented by quaternions.
存储动画帧我们仅仅需要骨胳的数据。通常，骨胳数据由四元数表示。
Quaternions extend the concept of rotation in three dimensions to rotation in four dimensions.
四元数将三维中旋转的概念扩展到四维中的旋转。
Determines the product of a quaternions and a specified factor.
Quaternions were originally invented as an extension to complex numbers.
四元数最早是为了扩展复数应用而产生与发展起来的。
Compares the specified quaternions to determine whether they are the same.
对指定的四元数进行比较以确定其是否相同。
Quaternions are a compact, unintuitive way of representing rotations.
四元数是表现旋转的结实的、非直观的方法。
Compares the current specified quaternions to determine whether they are different.
对当前指定的四元数进行比较以确定其是否不同。