c++ - Standard Position of a Quaternion? -

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In 2D, the standard position of a vector is below positive X axis, what is the same condition for quaternions?

There is no "standard status" of a vector. In 2D or 3D

Definitely a general mathematical convention that X, Y is the direction of an angle (cos ()), sin (angle). This means that if angle is 0, then the vector indicates positive x axis but it is far from "standard condition of vector".

When some quadratic functions can resemble a 3D angle, they are not angle Quaternions (in the case of graphics) represent the orientation of a space, any other Relative to the location.

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