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/* SPDX-License-Identifier: GPL-2.0-or-later */
#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::node_geo_boolean_cc {
static void node_declare(NodeDeclarationBuilder &b)
{
b.add_input<decl::Geometry>(N_("Mesh 1"))
.only_realized_data()
.supported_type(GEO_COMPONENT_TYPE_MESH);
b.add_input<decl::Geometry>(N_("Mesh 2")).multi_input().supported_type(GEO_COMPONENT_TYPE_MESH);
b.add_input<decl::Bool>(N_("Self Intersection"));
b.add_input<decl::Bool>(N_("Hole Tolerant"));
b.add_output<decl::Geometry>(N_("Mesh"));
}
static void node_layout(uiLayout *layout, bContext *UNUSED(C), PointerRNA *ptr)
{
uiItemR(layout, ptr, "operation", 0, "", ICON_NONE);
}
static void node_update(bNodeTree *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(ntree, geometry_1_socket, false);
nodeSetSocketAvailability(ntree, geometry_2_socket, true);
node_sock_label(geometry_2_socket, N_("Mesh"));
break;
case GEO_NODE_BOOLEAN_DIFFERENCE:
nodeSetSocketAvailability(ntree, geometry_1_socket, true);
nodeSetSocketAvailability(ntree, geometry_2_socket, true);
node_sock_label(geometry_2_socket, N_("Mesh 2"));
break;
}
}
static void node_init(bNodeTree *UNUSED(tree), bNode *node)
{
node->custom1 = GEO_NODE_BOOLEAN_DIFFERENCE;
}
static void node_geo_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>("Mesh 1");
/* 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>("Mesh 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("Mesh", GeometrySet::create_with_mesh(result));
}
} // namespace blender::nodes::node_geo_boolean_cc
void register_node_type_geo_boolean()
{
namespace file_ns = blender::nodes::node_geo_boolean_cc;
static bNodeType ntype;
geo_node_type_base(&ntype, GEO_NODE_MESH_BOOLEAN, "Mesh Boolean", NODE_CLASS_GEOMETRY);
ntype.declare = file_ns::node_declare;
ntype.draw_buttons = file_ns::node_layout;
ntype.updatefunc = file_ns::node_update;
node_type_init(&ntype, file_ns::node_init);
ntype.geometry_node_execute = file_ns::node_geo_exec;
nodeRegisterType(&ntype);
}
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