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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 "DNA_mesh_types.h"
#include "BKE_mesh_boolean_convert.hh"
#include "UI_interface.h"
#include "UI_resources.h"
#include "node_geometry_util.hh"
namespace blender::nodes {
static void geo_node_boolean_declare(NodeDeclarationBuilder &b)
{
b.add_input<decl::Geometry>("Geometry 1");
b.add_input<decl::Geometry>("Geometry 2").multi_input();
b.add_input<decl::Bool>("Self Intersection");
b.add_input<decl::Bool>("Hole Tolerant");
b.add_output<decl::Geometry>("Geometry");
}
static void geo_node_boolean_layout(uiLayout *layout, bContext *UNUSED(C), PointerRNA *ptr)
{
uiItemR(layout, ptr, "operation", 0, "", ICON_NONE);
}
static void geo_node_boolean_update(bNodeTree *UNUSED(ntree), bNode *node)
{
GeometryNodeBooleanOperation operation = (GeometryNodeBooleanOperation)node->custom1;
bNodeSocket *geometry_1_socket = (bNodeSocket *)node->inputs.first;
bNodeSocket *geometry_2_socket = geometry_1_socket->next;
switch (operation) {
case GEO_NODE_BOOLEAN_INTERSECT:
case GEO_NODE_BOOLEAN_UNION:
nodeSetSocketAvailability(geometry_1_socket, false);
nodeSetSocketAvailability(geometry_2_socket, true);
node_sock_label(geometry_2_socket, N_("Geometry"));
break;
case GEO_NODE_BOOLEAN_DIFFERENCE:
nodeSetSocketAvailability(geometry_1_socket, true);
nodeSetSocketAvailability(geometry_2_socket, true);
node_sock_label(geometry_2_socket, N_("Geometry 2"));
break;
}
}
static void geo_node_boolean_init(bNodeTree *UNUSED(tree), bNode *node)
{
node->custom1 = GEO_NODE_BOOLEAN_DIFFERENCE;
}
static void geo_node_boolean_exec(GeoNodeExecParams params)
{
GeometryNodeBooleanOperation operation = (GeometryNodeBooleanOperation)params.node().custom1;
const bool use_self = params.get_input<bool>("Self Intersection");
const bool hole_tolerant = params.get_input<bool>("Hole Tolerant");
#ifndef WITH_GMP
params.error_message_add(NodeWarningType::Error,
TIP_("Disabled, Blender was compiled without GMP"));
#endif
Vector<const Mesh *> meshes;
Vector<const float4x4 *> transforms;
GeometrySet set_a;
if (operation == GEO_NODE_BOOLEAN_DIFFERENCE) {
set_a = params.extract_input<GeometrySet>("Geometry 1");
if (set_a.has_instances()) {
params.error_message_add(
NodeWarningType::Info,
TIP_("Instances are not supported for the first geometry input, and will not be used"));
}
/* Note that it technically wouldn't be necessary to realize the instances for the first
* geometry input, but the boolean code expects the first shape for the difference operation
* to be a single mesh. */
const Mesh *mesh_in_a = set_a.get_mesh_for_read();
if (mesh_in_a != nullptr) {
meshes.append(mesh_in_a);
transforms.append(nullptr);
}
}
/* The instance transform matrices are owned by the instance group, so we have to
* keep all of them around for use during the boolean operation. */
Vector<bke::GeometryInstanceGroup> set_groups;
Vector<GeometrySet> geometry_sets = params.extract_multi_input<GeometrySet>("Geometry 2");
for (const GeometrySet &geometry_set : geometry_sets) {
bke::geometry_set_gather_instances(geometry_set, set_groups);
}
for (const bke::GeometryInstanceGroup &set_group : set_groups) {
const Mesh *mesh_in = set_group.geometry_set.get_mesh_for_read();
if (mesh_in != nullptr) {
meshes.append_n_times(mesh_in, set_group.transforms.size());
for (const int i : set_group.transforms.index_range()) {
transforms.append(set_group.transforms.begin() + i);
}
}
}
Mesh *result = blender::meshintersect::direct_mesh_boolean(
meshes, transforms, float4x4::identity(), {}, use_self, hole_tolerant, operation);
params.set_output("Geometry", GeometrySet::create_with_mesh(result));
}
} // namespace blender::nodes
void register_node_type_geo_boolean()
{
static bNodeType ntype;
geo_node_type_base(&ntype, GEO_NODE_BOOLEAN, "Boolean", NODE_CLASS_GEOMETRY, 0);
ntype.declare = blender::nodes::geo_node_boolean_declare;
ntype.draw_buttons = blender::nodes::geo_node_boolean_layout;
ntype.updatefunc = blender::nodes::geo_node_boolean_update;
node_type_init(&ntype, blender::nodes::geo_node_boolean_init);
ntype.geometry_node_execute = blender::nodes::geo_node_boolean_exec;
nodeRegisterType(&ntype);
}
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