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main sync #3

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Patrick Busch merged 318 commits from blender/blender:main into main 2023-03-17 15:52:21 +01:00
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source/blender/editors/uvedit/uvedit_unwrap_ops.cc
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@ -1164,6 +1164,8 @@ static void face_island_uv_rotate_fit_aabb(FaceIsland *island)
}
}
/* As the UV Packing API doesn't yet support rotation, we need
* to pre-rotate each island into the smallest AABB. */
float angle = BLI_convexhull_aabb_fit_points_2d(coords, coords_len);
/* Rotate coords by `angle` before computing bounding box. */
@ -1184,9 +1186,13 @@ static void face_island_uv_rotate_fit_aabb(FaceIsland *island)
minmax_v2v2_v2(bounds_min, bounds_max, coords[i]);
}
/* "Stand-up" islands.
* If we rotate the AABB by 90 degrees, the aspect ratio correction for the X axis will be
* `aspect_y` and for the Y axis will be `1.0f / aspect_y`. Applying both corrections gives
* a combined factor of `aspect_y / (1.0f / aspect_y) == aspect_y * aspect_y`. */
float size[2];
sub_v2_v2v2(size, bounds_max, bounds_min);
if (size[1] < size[0]) {
if (size[1] < size[0] * (aspect_y * aspect_y)) {
angle += DEG2RADF(90.0f);
}