1 files changed, 116 insertions, 0 deletions
diff --git a/source/blender/nodes/geometry/nodes/node_geo_merge_by_distance.cc b/source/blender/nodes/geometry/nodes/node_geo_merge_by_distance.cc
new file mode 100644
index 00000000000..500471637b3
--- /dev/null
+++ b/source/blender/nodes/geometry/nodes/node_geo_merge_by_distance.cc
@@ -0,0 +1,116 @@
+/*
+ * 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_pointcloud.h"
+
+#include "BLI_float3.hh"
+#include "BLI_span.hh"
+
+#include "DNA_pointcloud_types.h"
+
+#include "GEO_mesh_merge_by_distance.h"
+#include "GEO_pointcloud_merge_by_distance.h"
+
+#include "UI_interface.h"
+#include "UI_resources.h"
+
+#include "node_geometry_util.hh"
+
+using blender::Array;
+using blender::float3;
+using blender::Span;
+using blender::Vector;
+
+static bNodeSocketTemplate geo_node_merge_by_distance_in[] = {
+    {SOCK_GEOMETRY, N_("Geometry")},
+    {SOCK_FLOAT, N_("Distance"), 0.0f, 0, 0, 0, 0, 10000.0f, PROP_DISTANCE},
+    {SOCK_STRING, N_("Selection")},
+    {-1, ""},
+};
+
+static bNodeSocketTemplate geo_node_merge_by_distance_out[] = {
+    {SOCK_GEOMETRY, N_("Geometry")},
+    {-1, ""},
+};
+
+static void geo_node_merge_by_distance_layout(uiLayout *layout,
+                                              bContext *UNUSED(C),
+                                              PointerRNA *ptr)
+{
+  uiItemR(layout, ptr, "merge_mode", 0, "", ICON_NONE);
+}
+
+static void geo_merge_by_distance_init(bNodeTree *UNUSED(ntree), bNode *node)
+{
+  node->custom1 = WELD_MODE_ALL;
+}
+
+namespace blender::nodes {
+static void geo_node_merge_by_distance_exec(GeoNodeExecParams params)
+{
+  GeometrySet geometry_set = params.extract_input<GeometrySet>("Geometry");
+  geometry_set = geometry_set_realize_instances(geometry_set);
+
+  const char weld_mode = params.node().custom1;
+  const float distance = params.extract_input<float>("Distance");
+
+  if (geometry_set.has_mesh()) {
+    MeshComponent &mesh_component = geometry_set.get_component_for_write<MeshComponent>();
+    const Mesh *input_mesh = mesh_component.get_for_read();
+
+    const bool default_selection = true;
+    GVArray_Typed<bool> selection_attribute = params.get_input_attribute<bool>(
+        "Selection", mesh_component, ATTR_DOMAIN_POINT, default_selection);
+    VArray_Span<bool> selection{selection_attribute};
+
+    Mesh *result = GEO_mesh_merge_by_distance(input_mesh, selection.data(), distance, weld_mode);
+    if (result != input_mesh) {
+      geometry_set.replace_mesh(result);
+    }
+  }
+
+  if (geometry_set.has_pointcloud()) {
+    PointCloudComponent &pointcloud_component =
+        geometry_set.get_component_for_write<PointCloudComponent>();
+    const PointCloud *pointcloud = pointcloud_component.get_for_read();
+    const bool default_selection = true;
+    GVArray_Typed<bool> selection_attribute = params.get_input_attribute<bool>(
+        "Selection", pointcloud_component, ATTR_DOMAIN_POINT, default_selection);
+    VArray_Span<bool> selection{selection_attribute};
+    pointcloud_component.replace(merge_by_distance_pointcloud(*pointcloud, distance, selection));
+  }
+
+  if (geometry_set.has_volume()) {
+    params.error_message_add(NodeWarningType::Warning,
+                             TIP_("This Node does not operate on volumes"));
+  }
+
+  params.set_output("Geometry", std::move(geometry_set));
+}
+}  // namespace blender::nodes
+
+void register_node_type_geo_merge_by_distance()
+{
+  static bNodeType ntype;
+  geo_node_type_base(
+      &ntype, GEO_NODE_MERGE_BY_DISTANCE, "Merge By Distance", NODE_CLASS_GEOMETRY, 0);
+  node_type_socket_templates(
+      &ntype, geo_node_merge_by_distance_in, geo_node_merge_by_distance_out);
+  node_type_init(&ntype, geo_merge_by_distance_init);
+  ntype.geometry_node_execute = blender::nodes::geo_node_merge_by_distance_exec;
+  ntype.draw_buttons = geo_node_merge_by_distance_layout;
+  nodeRegisterType(&ntype);
+}