438b8c303e
This PR gives access to OpenVDB's level set filtering operations through individual **SDF Grid** nodes. - **Mean Curvature**: Smoothens high curvature areas more than flatter ones. - **Laplacian**: Approximates mean curvature flow for true SDFs at lower computational cost. - **Median**: Reduces noise while preserving sharp features. - **Mean**: Fast separable averaging filter for general-purpose smoothing with linear computational complexity. - **Offset**: Uniform dilation/erosion operation that shifts the SDF surface by a world-space distance. - **Fillet**: Rounds off concave internal corners by operating only on regions with negative principal curvature. Pull Request: https://projects.blender.org/blender/blender/pulls/147224
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