Jihyun Yu 8a6fc54ccd Curve2D/Curve3D: exact linear interpolation ...

While calculating interpolated points, intervals between two baked
points has been assummed to be `baked_interval`. The assumption could
cause significant error in some extreme cases (for example #7088).

To improve accuracy, `baked_dist_cache` is introduced, which stores
distance from starting point for each baked points. `interpolate_baked`
now returns exact linear-interpolated position along baked points.

2021-08-21 16:57:59 +09:00

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