diff options
Diffstat (limited to 'source/blender/nodes/geometry/nodes/node_geo_subdivision_surface.cc')
-rw-r--r-- | source/blender/nodes/geometry/nodes/node_geo_subdivision_surface.cc | 113 |
1 files changed, 113 insertions, 0 deletions
diff --git a/source/blender/nodes/geometry/nodes/node_geo_subdivision_surface.cc b/source/blender/nodes/geometry/nodes/node_geo_subdivision_surface.cc new file mode 100644 index 00000000000..dccdf94243e --- /dev/null +++ b/source/blender/nodes/geometry/nodes/node_geo_subdivision_surface.cc @@ -0,0 +1,113 @@ +/* + * 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 "MEM_guardedalloc.h" + +#include "BKE_subdiv.h" +#include "BKE_subdiv_mesh.h" + +#include "node_geometry_util.hh" + +static bNodeSocketTemplate geo_node_subdivision_surface_in[] = { + {SOCK_GEOMETRY, N_("Geometry")}, + {SOCK_INT, N_("Level"), 1, 0, 0, 0, 0, 6}, + {SOCK_BOOLEAN, N_("Use Creases")}, + {SOCK_BOOLEAN, N_("Boundary Smooth")}, + {SOCK_BOOLEAN, N_("Smooth UVs")}, + {-1, ""}, +}; + +static bNodeSocketTemplate geo_node_subdivision_surface_out[] = { + {SOCK_GEOMETRY, N_("Geometry")}, + {-1, ""}, +}; + +namespace blender::nodes { +static void geo_node_subdivision_surface_exec(GeoNodeExecParams params) +{ + GeometrySet geometry_set = params.extract_input<GeometrySet>("Geometry"); + + if (!geometry_set.has_mesh()) { + params.set_output("Geometry", geometry_set); + return; + } + +#ifndef WITH_OPENSUBDIV + /* Return input geometry if Blender is built without OpenSubdiv. */ + params.set_output("Geometry", std::move(geometry_set)); + return; +#else + const int subdiv_level = clamp_i(params.extract_input<int>("Level"), 0, 30); + + /* Only process subdivion if level is greater than 0. */ + if (subdiv_level == 0) { + params.set_output("Geometry", std::move(geometry_set)); + return; + } + + const bool use_crease = params.extract_input<bool>("Use Creases"); + const bool boundary_smooth = params.extract_input<bool>("Boundary Smooth"); + const bool smooth_uvs = params.extract_input<bool>("Smooth UVs"); + 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 = false; + subdiv_settings.is_adaptive = false; + subdiv_settings.use_creases = use_crease; + subdiv_settings.level = subdiv_level; + + subdiv_settings.vtx_boundary_interpolation = BKE_subdiv_vtx_boundary_interpolation_from_subsurf( + boundary_smooth); + subdiv_settings.fvar_linear_interpolation = BKE_subdiv_fvar_interpolation_from_uv_smooth( + smooth_uvs); + + /* Apply subdivision to 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); + + geometry_set.replace_mesh(mesh_out); + + // BKE_subdiv_stats_print(&subdiv->stats); + BKE_subdiv_free(subdiv); + + params.set_output("Geometry", std::move(geometry_set)); +#endif +} +} // namespace blender::nodes + +void register_node_type_geo_subdivision_surface() +{ + static bNodeType ntype; + + geo_node_type_base(&ntype, GEO_NODE_SUBDIVISION_SURFACE, "Subdivision Surface", 0, 0); + node_type_socket_templates( + &ntype, geo_node_subdivision_surface_in, geo_node_subdivision_surface_out); + ntype.geometry_node_execute = blender::nodes::geo_node_subdivision_surface_exec; + nodeRegisterType(&ntype); +} |