Erik Abrahamsson
4b30b5c57f
Geometry Nodes: SDF Volume nodes milestone 1 Adds initial support for SDF volume creation and manipulation. `SDF volume` is Blender's name of an OpenVDB grid of type Level Set. See the discussion about naming in #91668. The new nodes are: - Mesh to SDF Volume: Converts a mesh to an SDF Volume - Points to SDF Volume: Converts points to an SDF Volume - Mean Filter SDF Volume: Applies a Mean Filter to an SDF - Offset SDF Volume: Applies an offset to an SDF - SDF Volume Sphere: Creates an SDF Volume in the shape of a sphere For now an experimental option `New Volume Nodes` needs to be enabled in Blender preferences for the nodes to be visible. See the current work plan for Volume Nodes in #103248. Pull Request: blender/blender#105090
61 lines
1.9 KiB
C++
61 lines
1.9 KiB
C++
/* SPDX-License-Identifier: GPL-2.0-or-later */
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#include "BLI_function_ref.hh"
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#include "BLI_math_matrix_types.hh"
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#include "BLI_string_ref.hh"
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#include "DNA_mesh_types.h"
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#include "DNA_meshdata_types.h"
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#include "DNA_modifier_types.h"
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#pragma once
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struct Volume;
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struct VolumeGrid;
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struct Depsgraph;
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/** \file
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* \ingroup geo
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*/
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namespace blender::geometry {
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struct MeshToVolumeResolution {
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MeshToVolumeModifierResolutionMode mode;
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union {
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float voxel_size;
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float voxel_amount;
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} settings;
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};
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#ifdef WITH_OPENVDB
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/**
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* \param bounds_fn: Return the bounds of the mesh positions,
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* used for deciding the voxel size in "Amount" mode.
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*/
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float volume_compute_voxel_size(const Depsgraph *depsgraph,
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FunctionRef<void(float3 &r_min, float3 &r_max)> bounds_fn,
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MeshToVolumeResolution resolution,
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float exterior_band_width,
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const float4x4 &transform);
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/**
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* Add a new fog VolumeGrid to the Volume by converting the supplied mesh.
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*/
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VolumeGrid *fog_volume_grid_add_from_mesh(Volume *volume,
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StringRefNull name,
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const Mesh *mesh,
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const float4x4 &mesh_to_volume_space_transform,
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float voxel_size,
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bool fill_volume,
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float exterior_band_width,
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float interior_band_width,
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float density);
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/**
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* Add a new SDF VolumeGrid to the Volume by converting the supplied mesh.
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*/
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VolumeGrid *sdf_volume_grid_add_from_mesh(
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Volume *volume, StringRefNull name, const Mesh &mesh, float voxel_size, float half_band_width);
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#endif
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} // namespace blender::geometry
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