Grid to Mesh Node¶
The Grid to Mesh node converts a voxel grid into a polygonal mesh by extracting an isosurface at a specified threshold value. This process is similar to the Marching Cubes algorithm used in many volumetric modeling systems.
The resulting mesh represents the boundary where the grid’s values cross the given threshold—typically the surface of a signed distance field (SDF) or density grid. This makes it possible to convert procedural volumetric data into geometry for rendering, simulation, or further modeling operations.
Inputs¶
- Grid
The input voxel grid to convert into a mesh. The grid must store float values such as those from a signed distance or density field.
- Threshold
The value that defines the surface of the generated mesh. Voxels with values larger than this threshold are considered inside the mesh, while smaller values are considered outside. For SDF grids, a threshold of
0.0typically corresponds to the surface.- Adaptivity
Controls the simplification of the generated mesh based on curvature. Higher values reduce polygon count by merging nearly flat areas, while smaller values preserve more detail. A value of
0.0disables adaptivity and produces a uniform mesh density.
Outputs¶
- Mesh
The resulting mesh extracted from the grid’s isosurface. The mesh follows the region where the grid’s scalar values equal the specified Threshold, and can be used for further geometry processing or rendering.