diff options
Diffstat (limited to 'source/blender/nodes/geometry/nodes/node_geo_mesh_to_volume.cc')
| -rw-r--r-- | source/blender/nodes/geometry/nodes/node_geo_mesh_to_volume.cc | 187 |
1 files changed, 187 insertions, 0 deletions
diff --git a/source/blender/nodes/geometry/nodes/node_geo_mesh_to_volume.cc b/source/blender/nodes/geometry/nodes/node_geo_mesh_to_volume.cc new file mode 100644 index 00000000000..92814a8bc5e --- /dev/null +++ b/source/blender/nodes/geometry/nodes/node_geo_mesh_to_volume.cc @@ -0,0 +1,187 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ + +#include "DEG_depsgraph_query.h" +#include "node_geometry_util.hh" + +#include "BKE_lib_id.h" +#include "BKE_mesh.h" +#include "BKE_mesh_runtime.h" +#include "BKE_mesh_wrapper.h" +#include "BKE_object.h" +#include "BKE_volume.h" + +#include "GEO_mesh_to_volume.hh" + +#include "DNA_mesh_types.h" +#include "DNA_meshdata_types.h" + +#include "UI_interface.h" +#include "UI_resources.h" + +namespace blender::nodes::node_geo_mesh_to_volume_cc { + +NODE_STORAGE_FUNCS(NodeGeometryMeshToVolume) + +static void node_declare(NodeDeclarationBuilder &b) +{ + b.add_input<decl::Geometry>(N_("Mesh")).supported_type(GEO_COMPONENT_TYPE_MESH); + b.add_input<decl::Float>(N_("Density")).default_value(1.0f).min(0.01f).max(FLT_MAX); + b.add_input<decl::Float>(N_("Voxel Size")) + .default_value(0.3f) + .min(0.01f) + .max(FLT_MAX) + .subtype(PROP_DISTANCE); + b.add_input<decl::Float>(N_("Voxel Amount")).default_value(64.0f).min(0.0f).max(FLT_MAX); + b.add_input<decl::Float>(N_("Exterior Band Width")) + .default_value(0.1f) + .min(0.0f) + .max(FLT_MAX) + .subtype(PROP_DISTANCE) + .description(N_("Width of the volume outside of the mesh")); + b.add_input<decl::Float>(N_("Interior Band Width")) + .default_value(0.0f) + .min(0.0f) + .max(FLT_MAX) + .subtype(PROP_DISTANCE) + .description(N_("Width of the volume inside of the mesh")); + b.add_input<decl::Bool>(N_("Fill Volume")) + .default_value(true) + .description(N_("Initialize the density grid in every cell inside the enclosed volume")); + b.add_output<decl::Geometry>(N_("Volume")); +} + +static void node_layout(uiLayout *layout, bContext *UNUSED(C), PointerRNA *ptr) +{ + uiLayoutSetPropSep(layout, true); + uiLayoutSetPropDecorate(layout, false); + uiItemR(layout, ptr, "resolution_mode", 0, IFACE_("Resolution"), ICON_NONE); +} + +static void node_init(bNodeTree *UNUSED(tree), bNode *node) +{ + NodeGeometryMeshToVolume *data = (NodeGeometryMeshToVolume *)MEM_callocN( + sizeof(NodeGeometryMeshToVolume), __func__); + data->resolution_mode = MESH_TO_VOLUME_RESOLUTION_MODE_VOXEL_AMOUNT; + node->storage = data; +} + +static void node_update(bNodeTree *ntree, bNode *node) +{ + NodeGeometryMeshToVolume *data = (NodeGeometryMeshToVolume *)node->storage; + + bNodeSocket *voxel_size_socket = nodeFindSocket(node, SOCK_IN, "Voxel Size"); + bNodeSocket *voxel_amount_socket = nodeFindSocket(node, SOCK_IN, "Voxel Amount"); + nodeSetSocketAvailability(ntree, + voxel_amount_socket, + data->resolution_mode == MESH_TO_VOLUME_RESOLUTION_MODE_VOXEL_AMOUNT); + nodeSetSocketAvailability(ntree, + voxel_size_socket, + data->resolution_mode == MESH_TO_VOLUME_RESOLUTION_MODE_VOXEL_SIZE); +} + +#ifdef WITH_OPENVDB + +static Volume *create_volume_from_mesh(const Mesh &mesh, GeoNodeExecParams ¶ms) +{ + const NodeGeometryMeshToVolume &storage = + *(const NodeGeometryMeshToVolume *)params.node().storage; + + const float density = params.get_input<float>("Density"); + const float exterior_band_width = params.get_input<float>("Exterior Band Width"); + const float interior_band_width = params.get_input<float>("Interior Band Width"); + const bool fill_volume = params.get_input<bool>("Fill Volume"); + + geometry::MeshToVolumeResolution resolution; + resolution.mode = (MeshToVolumeModifierResolutionMode)storage.resolution_mode; + if (resolution.mode == MESH_TO_VOLUME_RESOLUTION_MODE_VOXEL_AMOUNT) { + resolution.settings.voxel_amount = params.get_input<float>("Voxel Amount"); + if (resolution.settings.voxel_amount <= 0.0f) { + return nullptr; + } + } + else if (resolution.mode == MESH_TO_VOLUME_RESOLUTION_MODE_VOXEL_SIZE) { + resolution.settings.voxel_size = params.get_input<float>("Voxel Size"); + if (resolution.settings.voxel_size <= 0.0f) { + return nullptr; + } + } + + if (mesh.totvert == 0 || mesh.totpoly == 0) { + return nullptr; + } + + const float4x4 mesh_to_volume_space_transform = float4x4::identity(); + + auto bounds_fn = [&](float3 &r_min, float3 &r_max) { + float3 min{std::numeric_limits<float>::max()}; + float3 max{-std::numeric_limits<float>::max()}; + BKE_mesh_wrapper_minmax(&mesh, min, max); + r_min = min; + r_max = max; + }; + + const float voxel_size = geometry::volume_compute_voxel_size(params.depsgraph(), + bounds_fn, + resolution, + exterior_band_width, + mesh_to_volume_space_transform); + + Volume *volume = (Volume *)BKE_id_new_nomain(ID_VO, nullptr); + BKE_volume_init_grids(volume); + + /* Convert mesh to grid and add to volume. */ + geometry::volume_grid_add_from_mesh(volume, + "density", + &mesh, + mesh_to_volume_space_transform, + voxel_size, + fill_volume, + exterior_band_width, + interior_band_width, + density); + + return volume; +} + +#endif /* WITH_OPENVDB */ + +static void node_geo_exec(GeoNodeExecParams params) +{ +#ifdef WITH_OPENVDB + GeometrySet geometry_set(params.extract_input<GeometrySet>("Mesh")); + + geometry_set.modify_geometry_sets([&](GeometrySet &geometry_set) { + if (geometry_set.has_mesh()) { + Volume *volume = create_volume_from_mesh(*geometry_set.get_mesh_for_read(), params); + geometry_set.replace_volume(volume); + geometry_set.keep_only_during_modify({GEO_COMPONENT_TYPE_VOLUME}); + } + }); + params.set_output("Volume", std::move(geometry_set)); +#else + params.error_message_add(NodeWarningType::Error, + TIP_("Disabled, Blender was compiled without OpenVDB")); + params.set_default_remaining_outputs(); + return; +#endif +} + +} // namespace blender::nodes::node_geo_mesh_to_volume_cc + +void register_node_type_geo_mesh_to_volume() +{ + namespace file_ns = blender::nodes::node_geo_mesh_to_volume_cc; + + static bNodeType ntype; + + geo_node_type_base(&ntype, GEO_NODE_MESH_TO_VOLUME, "Mesh to Volume", NODE_CLASS_GEOMETRY); + ntype.declare = file_ns::node_declare; + node_type_size(&ntype, 200, 120, 700); + node_type_init(&ntype, file_ns::node_init); + node_type_update(&ntype, file_ns::node_update); + ntype.geometry_node_execute = file_ns::node_geo_exec; + ntype.draw_buttons = file_ns::node_layout; + node_type_storage( + &ntype, "NodeGeometryMeshToVolume", node_free_standard_storage, node_copy_standard_storage); + nodeRegisterType(&ntype); +} |