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/*
* 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 "DNA_mesh_types.h"
#include "DNA_meshdata_types.h"
#include "UI_interface.h"
#include "UI_resources.h"
#include "bmesh.h"
#include "bmesh_tools.h"
#include "math.h"
#include "node_geometry_util.hh"
static bNodeSocketTemplate geo_node_dissolve_in[] = {
{SOCK_GEOMETRY, N_("Geometry")},
{SOCK_FLOAT, N_("Angle"), 0.0f, 0.0f, 0.0f, 1.0f, 0.0f, M_PI, PROP_ANGLE},
{SOCK_BOOLEAN, N_("All Boundaries"), false},
{SOCK_STRING, N_("Selection")},
{-1, ""},
};
static bNodeSocketTemplate geo_node_dissolve_out[] = {
{SOCK_GEOMETRY, N_("Geometry")},
{-1, ""},
};
static void geo_node_dissolve_layout(uiLayout *layout, bContext *UNUSED(C), PointerRNA *ptr)
{
uiLayoutSetPropSep(layout, true);
uiLayoutSetPropDecorate(layout, false);
uiItemR(layout, ptr, "selection_type", 0, nullptr, ICON_NONE);
}
static void geo_node_dissolve_init(bNodeTree *UNUSED(tree), bNode *node)
{
NodeGeometryDissolve *node_storage = (NodeGeometryDissolve *)MEM_callocN(
sizeof(NodeGeometryDissolve), __func__);
node->storage = node_storage;
node_storage->selection_type = GEO_NODE_DISSOLVE_DELIMITTER_UNSELECTED;
}
namespace blender::nodes {
static Mesh *dissolve_mesh(const float angle,
const bool all_boundaries,
const int delimiter,
const Span<bool> selection,
const Mesh *mesh)
{
const BMeshCreateParams bmesh_create_params = {0};
const BMeshFromMeshParams bmesh_from_mesh_params = {
true, 0, 0, 0, {CD_MASK_ORIGINDEX, CD_MASK_ORIGINDEX, CD_MASK_ORIGINDEX}};
BMesh *bm = BKE_mesh_to_bmesh_ex(mesh, &bmesh_create_params, &bmesh_from_mesh_params);
if (delimiter & BMO_DELIM_FACE_SELECTION) {
BM_tag_faces(bm, selection.data());
}
else {
BM_select_edges(bm, selection.data());
}
BM_mesh_decimate_dissolve(bm, angle, all_boundaries, (BMO_Delimit)delimiter);
Mesh *result = BKE_mesh_from_bmesh_for_eval_nomain(bm, NULL, mesh);
BM_mesh_free(bm);
result->runtime.cd_dirty_vert |= CD_MASK_NORMAL;
return result;
}
static void geo_node_dissolve_exec(GeoNodeExecParams params)
{
GeometrySet geometry_set = params.extract_input<GeometrySet>("Geometry");
const float angle = params.extract_input<float>("Angle");
if (angle > 0.0f && geometry_set.has_mesh()) {
const MeshComponent &mesh_component = geometry_set.get_component_for_write<MeshComponent>();
const Mesh *input_mesh = mesh_component.get_for_read();
const bool all_boundaries = params.extract_input<bool>("All Boundaries");
const bNode &node = params.node();
const NodeGeometryDissolve &node_storage = *(NodeGeometryDissolve *)node.storage;
bool default_selection = true;
AttributeDomain selection_domain = ATTR_DOMAIN_FACE;
BMO_Delimit delimiter = BMO_DELIM_FACE_SELECTION;
if (node_storage.selection_type == GEO_NODE_DISSOLVE_DELIMITTER_UNSELECTED) {
selection_domain = ATTR_DOMAIN_EDGE;
delimiter = BMO_DELIM_EDGE_SELECTION_INVSE;
default_selection = true;
}
else if (node_storage.selection_type == GEO_NODE_DISSOLVE_DELIMITTER_LIMIT) {
selection_domain = ATTR_DOMAIN_EDGE;
delimiter = BMO_DELIM_EDGE_SELECTION;
default_selection = false;
};
GVArray_Typed<bool> selection_attribute = params.get_input_attribute<bool>(
"Selection", mesh_component, selection_domain, default_selection);
VArray_Span<bool> selection{selection_attribute};
Mesh *result = dissolve_mesh(angle, all_boundaries, delimiter, selection, input_mesh);
geometry_set.replace_mesh(result);
}
params.set_output("Geometry", std::move(geometry_set));
}
} // namespace blender::nodes
void register_node_type_geo_dissolve()
{
static bNodeType ntype;
geo_node_type_base(&ntype, GEO_NODE_DISSOLVE, "Dissolve", NODE_CLASS_GEOMETRY, 0);
node_type_socket_templates(&ntype, geo_node_dissolve_in, geo_node_dissolve_out);
node_type_storage(
&ntype, "NodeGeometryDissolve", node_free_standard_storage, node_copy_standard_storage);
node_type_init(&ntype, geo_node_dissolve_init);
ntype.geometry_node_execute = blender::nodes::geo_node_dissolve_exec;
ntype.draw_buttons = geo_node_dissolve_layout;
ntype.width = 165;
nodeRegisterType(&ntype);
}
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