# Blender Git Commit Log

### Git Commits -> Revision b91b863

December 8, 2021, 06:51 (GMT) |

Geometry Nodes: Dual Mesh Node This node calculates the dual of the input mesh. This means that faces get replaced with vertices and vertices with faces. In principle this only makes sense when the mesh in manifold, but there is an option to keep the (non-manifold) boundaries of the mesh intact. Attributes are propagated: - Point domain goes to face domain and vice versa - Edge domain and Face corner domain gets mapped to itself Because of the duality, when the mesh is manifold, the attributes get mapped to themselves when applying the node twice. Thanks to Leul Mulugeta (@Leul) for help with the ascii diagrams in the code comments. Note that this does not work well with some non-manifold geometry, like an edge connected to more than 2 faces, or a vertex connected to only two faces, while not being in the boundary. This is because there is no good way to define the dual at some of those points. This type of non-manifold vertices are just removed for this reason. Differential Revision: https://developer.blender.org/D12949 |

#### Commit Details:

Full Hash: *b91b8638cde6ac9861f658588d223ea64c03f37e*

Parent Commit: *8e09293*

Committed By: *YimingWu*

Lines Changed: ** +849**, ** -0**

#### 1 Added Path:

#### 6 Modified Paths:

/release/scripts/startup/nodeitems_builtins.py (

/source/blender/blenkernel/BKE_node.h (

/source/blender/blenkernel/intern/node.cc (

/source/blender/nodes/geometry/CMakeLists.txt (

/source/blender/nodes/NOD_geometry.h (

/source/blender/nodes/NOD_static_types.h (

**+1**,**-0**)**(Diff)**/source/blender/blenkernel/BKE_node.h (

**+1**,**-0**)**(Diff)**/source/blender/blenkernel/intern/node.cc (

**+1**,**-0**)**(Diff)**/source/blender/nodes/geometry/CMakeLists.txt (

**+1**,**-0**)**(Diff)**/source/blender/nodes/NOD_geometry.h (

**+1**,**-0**)**(Diff)**/source/blender/nodes/NOD_static_types.h (

**+1**,**-0**)**(Diff)**