a1efa167aa
While the function `ED_view3d_dist_range_get` was meant to calculate the range for `RegionView3D::dist` the minimum value was often clamped by the clip-start instead. Move this into a function and improve doc-strings in this area to clarify the conventions viewport zoom is expected to follow. - Rename `ED_view3d_dist_range_get` to `ED_view3d_dist_soft_range_get` since it's not an error when the `dist` is outside this range. - Return `Bounds<float>` instead of taking a return argument. - Take a `use_persp_range` argument to avoid re-assigning the minimum in some cases. - Add `ED_view3d_dist_soft_min_get` since it's common for only the minimum to be used (replace inline `v3d->clip_start * 1.5f`).
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