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/* SPDX-License-Identifier: GPL-2.0-or-later */
#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"
namespace blender::nodes::node_geo_mesh_subdivide_cc {
static void node_declare(NodeDeclarationBuilder &b)
{
b.add_input<decl::Geometry>(N_("Mesh")).supported_type(GEO_COMPONENT_TYPE_MESH);
b.add_input<decl::Int>(N_("Level")).default_value(1).min(0).max(6);
b.add_output<decl::Geometry>(N_("Mesh"));
}
static void geometry_set_mesh_subdivide(GeometrySet &geometry_set, const int level)
{
if (!geometry_set.has_mesh()) {
return;
}
const Mesh *mesh_in = geometry_set.get_mesh_for_read();
/* Initialize mesh settings. */
SubdivToMeshSettings mesh_settings;
mesh_settings.resolution = (1 << 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) {
return;
}
Mesh *mesh_out = BKE_subdiv_to_mesh(subdiv, &mesh_settings, mesh_in);
BKE_mesh_normals_tag_dirty(mesh_out);
MeshComponent &mesh_component = geometry_set.get_component_for_write<MeshComponent>();
mesh_component.replace(mesh_out);
BKE_subdiv_free(subdiv);
}
static void node_geo_exec(GeoNodeExecParams params)
{
GeometrySet geometry_set = params.extract_input<GeometrySet>("Mesh");
#ifndef WITH_OPENSUBDIV
params.error_message_add(NodeWarningType::Error,
TIP_("Disabled, Blender was compiled without OpenSubdiv"));
params.set_default_remaining_outputs();
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("Mesh", std::move(geometry_set));
return;
}
geometry_set.modify_geometry_sets(
[&](GeometrySet &geometry_set) { geometry_set_mesh_subdivide(geometry_set, subdiv_level); });
params.set_output("Mesh", std::move(geometry_set));
}
} // namespace blender::nodes::node_geo_mesh_subdivide_cc
void register_node_type_geo_mesh_subdivide()
{
namespace file_ns = blender::nodes::node_geo_mesh_subdivide_cc;
static bNodeType ntype;
geo_node_type_base(&ntype, GEO_NODE_SUBDIVIDE_MESH, "Subdivide Mesh", NODE_CLASS_GEOMETRY);
ntype.declare = file_ns::node_declare;
ntype.geometry_node_execute = file_ns::node_geo_exec;
nodeRegisterType(&ntype);
}
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