Add ico sphere primitive

6 files changed, 97 insertions, 0 deletions

diff --git a/source/blender/blenkernel/BKE_node.h b/source/blender/blenkernel/BKE_node.h
index 3fcdebbd7fd..e4eb95dbedd 100644
--- a/source/blender/blenkernel/BKE_node.h
+++ b/source/blender/blenkernel/BKE_node.h
@@ -1376,6 +1376,7 @@ int ntreeTexExecTree(struct bNodeTree *ntree,
 #define GEO_NODE_MESH_PRIMITIVE_CIRCLE 1031
 #define GEO_NODE_MESH_PRIMITIVE_UV_SPHERE 1032
 #define GEO_NODE_MESH_PRIMITIVE_CYLINDER 1033
+#define GEO_NODE_MESH_PRIMITIVE_ICO_SPHERE 1034
 
 /** \} */
 
diff --git a/source/blender/blenkernel/intern/node.cc b/source/blender/blenkernel/intern/node.cc
index 08b41b2f0cb..6a3a2a2831e 100644
--- a/source/blender/blenkernel/intern/node.cc
+++ b/source/blender/blenkernel/intern/node.cc
@@ -4808,6 +4808,7 @@ static void registerGeometryNodes()
   register_node_type_geo_mesh_primitive_cube();
   register_node_type_geo_mesh_primitive_cylinder();
   register_node_type_geo_mesh_primitive_uv_sphere();
+  register_node_type_geo_mesh_primitive_ico_sphere();
   register_node_type_geo_object_info();
   register_node_type_geo_point_distribute();
   register_node_type_geo_point_instance();
diff --git a/source/blender/nodes/CMakeLists.txt b/source/blender/nodes/CMakeLists.txt
index 417f6dc5851..d119a4c4450 100644
--- a/source/blender/nodes/CMakeLists.txt
+++ b/source/blender/nodes/CMakeLists.txt
@@ -163,6 +163,7 @@ set(SRC
   geometry/nodes/node_geo_mesh_primitive_circle.cc
   geometry/nodes/node_geo_mesh_primitive_cube.cc
   geometry/nodes/node_geo_mesh_primitive_cylinder.cc
+  geometry/nodes/node_geo_mesh_primitive_ico_sphere.cc
   geometry/nodes/node_geo_mesh_primitive_uv_sphere.cc
   geometry/nodes/node_geo_object_info.cc
   geometry/nodes/node_geo_point_distribute.cc
diff --git a/source/blender/nodes/NOD_geometry.h b/source/blender/nodes/NOD_geometry.h
index f52af015979..30dcf88b753 100644
--- a/source/blender/nodes/NOD_geometry.h
+++ b/source/blender/nodes/NOD_geometry.h
@@ -46,6 +46,7 @@ void register_node_type_geo_mesh_primitive_circle(void);
 void register_node_type_geo_mesh_primitive_cube(void);
 void register_node_type_geo_mesh_primitive_cylinder(void);
 void register_node_type_geo_mesh_primitive_uv_sphere(void);
+void register_node_type_geo_mesh_primitive_ico_sphere(void);
 void register_node_type_geo_object_info(void);
 void register_node_type_geo_point_distribute(void);
 void register_node_type_geo_point_instance(void);
diff --git a/source/blender/nodes/NOD_static_types.h b/source/blender/nodes/NOD_static_types.h
index 4d8dd92ee60..9bfbc9afd80 100644
--- a/source/blender/nodes/NOD_static_types.h
+++ b/source/blender/nodes/NOD_static_types.h
@@ -303,6 +303,7 @@ DefNode(GeometryNode, GEO_NODE_MESH_PRIMITIVE_CUBE, 0, "MESH_PRIMITIVE_CUBE", Me
 DefNode(GeometryNode, GEO_NODE_MESH_PRIMITIVE_CIRCLE, def_geo_mesh_circle, "MESH_PRIMITIVE_CIRCLE", MeshCircle, "Circle", "")
 DefNode(GeometryNode, GEO_NODE_MESH_PRIMITIVE_UV_SPHERE, 0, "MESH_PRIMITIVE_UV_SPHERE", MeshUVSphere, "UV Sphere", "")
 DefNode(GeometryNode, GEO_NODE_MESH_PRIMITIVE_CYLINDER, def_geo_mesh_cylinder, "MESH_PRIMITIVE_CYLINDER", MeshCylinder, "Cylinder", "")
+DefNode(GeometryNode, GEO_NODE_MESH_PRIMITIVE_ICO_SPHERE, 0, "MESH_PRIMITIVE_ICO_SPHERE", MeshIcoSphere, "Ico Sphere", "")
 
 /* undefine macros */
 #undef DefNode
diff --git a/source/blender/nodes/geometry/nodes/node_geo_mesh_primitive_ico_sphere.cc b/source/blender/nodes/geometry/nodes/node_geo_mesh_primitive_ico_sphere.cc
new file mode 100644
index 00000000000..048c8ee9069
--- /dev/null
+++ b/source/blender/nodes/geometry/nodes/node_geo_mesh_primitive_ico_sphere.cc
@@ -0,0 +1,92 @@
+/*
+ * 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_lib_id.h"
+#include "BKE_mesh.h"
+
+#include "bmesh.h"
+
+#include "node_geometry_util.hh"
+
+static bNodeSocketTemplate geo_node_mesh_primitive_ico_sphere_in[] = {
+    {SOCK_FLOAT, N_("Radius"), 1.0f, 0.0f, 0.0f, 0.0f, 0.0f, FLT_MAX, PROP_DISTANCE},
+    {SOCK_INT, N_("Subdivisions"), 1, 0, 0, 0, 0, 7},
+    {SOCK_VECTOR, N_("Translation"), 0.0f, 0.0f, 0.0f, 1.0f, -FLT_MAX, FLT_MAX, PROP_TRANSLATION},
+    {SOCK_VECTOR, N_("Rotation"), 0.0f, 0.0f, 0.0f, 1.0f, -FLT_MAX, FLT_MAX, PROP_EULER},
+    {-1, ""},
+};
+
+static bNodeSocketTemplate geo_node_mesh_primitive_ico_sphere_out[] = {
+    {SOCK_GEOMETRY, N_("Geometry")},
+    {-1, ""},
+};
+
+namespace blender::nodes {
+
+static Mesh *create_ico_sphere_mesh(const float3 location,
+                                    const float3 rotation,
+                                    const int subdivisions,
+                                    const float radius)
+{
+  float4x4 transform;
+  loc_eul_size_to_mat4(transform.values, location, rotation, float3(1.0f));
+
+  const BMeshCreateParams bmcp = {true};
+  const BMAllocTemplate allocsize = {0, 0, 0, 0};
+  BMesh *bm = BM_mesh_create(&allocsize, &bmcp);
+
+  BMO_op_callf(bm,
+               BMO_FLAG_DEFAULTS,
+               "create_icosphere subdivisions=%i diameter=%f matrix=%m4 calc_uvs=%b",
+               subdivisions,
+               radius,
+               transform.values,
+               true);
+
+  Mesh *mesh = (Mesh *)BKE_id_new_nomain(ID_ME, NULL);
+  BM_mesh_bm_to_me_for_eval(bm, mesh, NULL);
+  BM_mesh_free(bm);
+
+  return mesh;
+}
+
+static void geo_node_mesh_primitive_ico_sphere_exec(GeoNodeExecParams params)
+{
+  /* Anything above 8 is not likely to be purposeful and will be very slow. */
+  const int subdivisions = std::min(params.extract_input<int>("Subdivisions"), 8);
+  const float radius = params.extract_input<float>("Radius");
+  const float3 location = params.extract_input<float3>("Translation");
+  const float3 rotation = params.extract_input<float3>("Rotation");
+
+  Mesh *mesh = create_ico_sphere_mesh(location, rotation, subdivisions, radius);
+  params.set_output("Geometry", GeometrySet::create_with_mesh(mesh));
+}
+
+}  // namespace blender::nodes
+
+void register_node_type_geo_mesh_primitive_ico_sphere()
+{
+  static bNodeType ntype;
+
+  geo_node_type_base(
+      &ntype, GEO_NODE_MESH_PRIMITIVE_ICO_SPHERE, "Ico Sphere", NODE_CLASS_GEOMETRY, 0);
+  node_type_socket_templates(
+      &ntype, geo_node_mesh_primitive_ico_sphere_in, geo_node_mesh_primitive_ico_sphere_out);
+  ntype.geometry_node_execute = blender::nodes::geo_node_mesh_primitive_ico_sphere_exec;
+  nodeRegisterType(&ntype);
+}