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Expand docs for Direction3d.angleFrom #144

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ianmackenzie opened this issue Nov 13, 2020 · 0 comments

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ianmackenzie commented Nov 13, 2020

Explain why it cannot return a signed angle
Suggest projecting both directions into a reference sketch plane and measuring angle in that plane

Perhaps also/alternatively add a function which does return a signed angle, by taking a reference axis as an argument:

Direction3d.angleAround :
    Axis3d units coordinates
    -> Direction3d coordinates
    -> Direction3d coordinates
    -> Angle

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