diff options
Diffstat (limited to 'source/blender/nodes/geometry/nodes/node_geo_mesh_subdivide.cc')
-rw-r--r-- | source/blender/nodes/geometry/nodes/node_geo_mesh_subdivide.cc | 111 |
1 files changed, 111 insertions, 0 deletions
diff --git a/source/blender/nodes/geometry/nodes/node_geo_mesh_subdivide.cc b/source/blender/nodes/geometry/nodes/node_geo_mesh_subdivide.cc new file mode 100644 index 00000000000..7492582c8cf --- /dev/null +++ b/source/blender/nodes/geometry/nodes/node_geo_mesh_subdivide.cc @@ -0,0 +1,111 @@ +/* + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software Foundation, + * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + */ + +#include "BKE_mesh.h" +#include "BKE_subdiv.h" +#include "BKE_subdiv_mesh.h" + +#include "UI_interface.h" +#include "UI_resources.h" + +#include "node_geometry_util.hh" + +static bNodeSocketTemplate geo_node_mesh_subdivide_in[] = { + {SOCK_GEOMETRY, N_("Geometry")}, + {SOCK_INT, N_("Level"), 1, 0, 0, 0, 0, 6}, + {-1, ""}, +}; + +static bNodeSocketTemplate geo_node_mesh_subdivide_out[] = { + {SOCK_GEOMETRY, N_("Geometry")}, + {-1, ""}, +}; + +namespace blender::nodes { + +static void geo_node_mesh_subdivide_exec(GeoNodeExecParams params) +{ + GeometrySet geometry_set = params.extract_input<GeometrySet>("Geometry"); + geometry_set = geometry_set_realize_instances(geometry_set); + + if (!geometry_set.has_mesh()) { + params.set_output("Geometry", geometry_set); + return; + } + +#ifndef WITH_OPENSUBDIV + params.error_message_add(NodeWarningType::Error, + TIP_("Disabled, Blender was compiled without OpenSubdiv")); + params.set_output("Geometry", std::move(geometry_set)); + return; +#endif + + /* See CCGSUBSURF_LEVEL_MAX for max limit. */ + const int subdiv_level = clamp_i(params.extract_input<int>("Level"), 0, 11); + + if (subdiv_level == 0) { + params.set_output("Geometry", std::move(geometry_set)); + return; + } + + const Mesh *mesh_in = geometry_set.get_mesh_for_read(); + + /* Initialize mesh settings. */ + SubdivToMeshSettings mesh_settings; + mesh_settings.resolution = (1 << subdiv_level) + 1; + mesh_settings.use_optimal_display = false; + + /* Initialize subdivision settings. */ + SubdivSettings subdiv_settings; + subdiv_settings.is_simple = true; + subdiv_settings.is_adaptive = false; + subdiv_settings.use_creases = false; + subdiv_settings.level = 1; + subdiv_settings.vtx_boundary_interpolation = BKE_subdiv_vtx_boundary_interpolation_from_subsurf( + 0); + subdiv_settings.fvar_linear_interpolation = BKE_subdiv_fvar_interpolation_from_uv_smooth(0); + + /* Apply subdivision from mesh. */ + Subdiv *subdiv = BKE_subdiv_update_from_mesh(nullptr, &subdiv_settings, mesh_in); + + /* In case of bad topology, skip to input mesh. */ + if (subdiv == nullptr) { + params.set_output("Geometry", std::move(geometry_set)); + return; + } + + Mesh *mesh_out = BKE_subdiv_to_mesh(subdiv, &mesh_settings, mesh_in); + BKE_mesh_calc_normals(mesh_out); + + MeshComponent &mesh_component = geometry_set.get_component_for_write<MeshComponent>(); + mesh_component.replace_mesh_but_keep_vertex_group_names(mesh_out); + + BKE_subdiv_free(subdiv); + + params.set_output("Geometry", std::move(geometry_set)); +} + +} // namespace blender::nodes + +void register_node_type_geo_mesh_subdivide() +{ + static bNodeType ntype; + + geo_node_type_base(&ntype, GEO_NODE_MESH_SUBDIVIDE, "Mesh Subdivide", NODE_CLASS_GEOMETRY, 0); + node_type_socket_templates(&ntype, geo_node_mesh_subdivide_in, geo_node_mesh_subdivide_out); + ntype.geometry_node_execute = blender::nodes::geo_node_mesh_subdivide_exec; + nodeRegisterType(&ntype); +} |