## Actions

Compute Polygon Triangulation |
Generates triangles and internal edges for the given polygon Target is Mesh Description Base |

Create Cube |
Create Cube Target is Static Mesh Description |

Create Edge |
Adds a new edge to the mesh and returns its ID Target is Mesh Description Base |

Create Edge with ID |
Adds a new edge to the mesh with the given ID Target is Mesh Description Base |

Create Polygon |
Adds a new polygon to the mesh and returns its ID. This will also make any missing edges, and all constituent triangles. Target is Mesh Description Base |

Create Polygon Group |
Adds a new polygon group to the mesh and returns its ID Target is Mesh Description Base |

Create Polygon Group with ID |
Adds a new polygon group to the mesh with the given ID Target is Mesh Description Base |

Create Polygon with ID |
Adds a new polygon to the mesh with the given ID. This will also make any missing edges, and all constituent triangles. Target is Mesh Description Base |

Create Triangle |
Adds a new triangle to the mesh and returns its ID. This will also make an encapsulating polygon, and any missing edges. Target is Mesh Description Base |

Create Triangle with ID |
Adds a new triangle to the mesh with the given ID. This will also make an encapsulating polygon, and any missing edges. Target is Mesh Description Base |

Create Vertex |
Adds a new vertex to the mesh and returns its ID Target is Mesh Description Base |

Create Vertex Instance |
Adds a new vertex instance to the mesh and returns its ID Target is Mesh Description Base |

Create Vertex Instance with ID |
Adds a new vertex instance to the mesh with the given ID Target is Mesh Description Base |

Create Vertex with ID |
Adds a new vertex to the mesh with the given ID Target is Mesh Description Base |

Delete Edge |
Deletes an edge from a mesh Target is Mesh Description Base |

Delete Polygon |
Deletes a polygon from the mesh Target is Mesh Description Base |

Delete Polygon Group |
Deletes a polygon group from the mesh Target is Mesh Description Base |

Delete Triangle |
Deletes a triangle from the mesh Target is Mesh Description Base |

Delete Vertex |
Deletes a vertex from the mesh Target is Mesh Description Base |

Delete Vertex Instance |
Deletes a vertex instance from a mesh Target is Mesh Description Base |

Empty |
Empty the mesh description Target is Mesh Description Base |

Get Edge Connected Polygons |
Returns the polygons connected to this edge Target is Mesh Description Base |

Get Edge Connected Triangles |
Returns reference to an array of triangle IDs connected to this edge Target is Mesh Description Base |

Get Edge Vertex |
Returns the vertex ID corresponding to one of the edge endpoints Target is Mesh Description Base |

Get Edge Vertices |
Returns a pair of vertex IDs defining the edge Target is Mesh Description Base |

Get Num Edge Connected Polygons |
Returns the number of polygons connected to this edge Target is Mesh Description Base |

Get Num Edge Connected Triangles |
Returns the number of triangles connected to this edge Target is Mesh Description Base |

Get Num Polygon Group Polygons |
Returns the number of polygons in this polygon group Target is Mesh Description Base |

Get Num Polygon Internal Edges |
Return the number of internal edges in this polygon Target is Mesh Description Base |

Get Num Polygon Triangles |
Return the number of triangles which comprise this polygon Target is Mesh Description Base |

Get Num Polygon Vertices |
Returns the number of vertices this polygon has Target is Mesh Description Base |

Get Num Vertex Connected Edges |
Returns number of edges connected to this vertex Target is Mesh Description Base |

Get Num Vertex Connected Polygons |
Returns the number of polygons connected to this vertex Target is Mesh Description Base |

Get Num Vertex Connected Triangles |
Returns number of triangles connected to this vertex Target is Mesh Description Base |

Get Num Vertex Instance Connected Polygons |
Returns the number of polygons connected to this vertex instance. Target is Mesh Description Base |

Get Num Vertex Instance Connected Triangles |
Returns the number of triangles connected to this vertex instance Target is Mesh Description Base |

Get Num Vertex Vertex Instances |
Returns number of vertex instances created from this vertex Target is Mesh Description Base |

Get Polygon Adjacent Polygons |
Populates the passed array with adjacent polygons Target is Mesh Description Base |

Get Polygon Group Polygons |
Returns the polygons associated with the given polygon group Target is Mesh Description Base |

Get Polygon Internal Edges |
Populate the provided array with a list of edges which are internal to the polygon, i.e. those which separate constituent triangles. Target is Mesh Description Base |

Get Polygon Perimeter Edges |
Returns the edges which form the polygon perimeter Target is Mesh Description Base |

Get Polygon Polygon Group |
Return the polygon group associated with a polygon Target is Mesh Description Base |

Get Polygon Triangles |
Return reference to an array of triangle IDs which comprise this polygon Target is Mesh Description Base |

Get Polygon Vertex Instances |
Returns reference to an array of VertexInstance IDs forming the perimeter of this polygon Target is Mesh Description Base |

Get Polygon Vertices |
Returns the vertices which form the polygon perimeter Target is Mesh Description Base |

Get Triangle Adjacent Triangles |
Returns the adjacent triangles to this triangle Target is Mesh Description Base |

Get Triangle Edges |
Returns the edges which define this triangle Target is Mesh Description Base |

Get Triangle Polygon |
Get the polygon which contains this triangle Target is Mesh Description Base |

Get Triangle Polygon Group |
Get the polygon group which contains this triangle Target is Mesh Description Base |

Get Triangle Vertex Instance |
Get the specified vertex instance by index Target is Mesh Description Base |

Get Triangle Vertex Instances |
Get the vertex instances which define this triangle Target is Mesh Description Base |

Get Triangle Vertices |
Returns the vertices which define this triangle Target is Mesh Description Base |

Get Vertex Adjacent Vertices |
Returns the vertices adjacent to this vertex Target is Mesh Description Base |

Get Vertex Connected Edges |
Returns reference to an array of Edge IDs connected to this vertex Target is Mesh Description Base |

Get Vertex Connected Polygons |
Returns the polygons connected to this vertex Target is Mesh Description Base |

Get Vertex Connected Triangles |
Returns the triangles connected to this vertex Target is Mesh Description Base |

Get Vertex Instance Connected Polygons |
Returns the polygons connected to this vertex instance Target is Mesh Description Base |

Get Vertex Instance Connected Triangles |
Returns reference to an array of Triangle IDs connected to this vertex instance Target is Mesh Description Base |

Get Vertex Instance for Polygon Vertex |
Return the vertex instance which corresponds to the given vertex on the given polygon, or FVertexInstanceID::Invalid Target is Mesh Description Base |

Get Vertex Instance for Triangle Vertex |
Return the vertex instance which corresponds to the given vertex on the given triangle, or FVertexInstanceID::Invalid Target is Mesh Description Base |

Get Vertex Instance Pair Edge |
Returns the edge ID defined by the two given vertex instance IDs, if there is one; otherwise FEdgeID::Invalid Target is Mesh Description Base |

Get Vertex Instance UV |
Get Vertex Instance UV Target is Static Mesh Description |

Get Vertex Instance Vertex |
Returns the vertex ID associated with the given vertex instance Target is Mesh Description Base |

Get Vertex Pair Edge |
Returns the edge ID defined by the two given vertex IDs, if there is one; otherwise FEdgeID::Invalid Target is Mesh Description Base |

Get Vertex Position |
Gets a vertex position Target is Mesh Description Base |

Get Vertex Vertex Instances |
Returns reference to an array of VertexInstance IDs instanced from this vertex Target is Mesh Description Base |

Is Edge Internal |
Determine whether a given edge is an internal edge between triangles of a polygon Target is Mesh Description Base |

Is Edge Internal to Polygon |
Determine whether a given edge is an internal edge between triangles of a specific polygon Target is Mesh Description Base |

Is Edge Valid |
Returns whether the passed edge ID is valid Target is Mesh Description Base |

Is Empty |
Return whether the mesh description is empty Target is Mesh Description Base |

Is Polygon Group Valid |
Returns whether the passed polygon group ID is valid Target is Mesh Description Base |

Is Polygon Valid |
Returns whether the passed polygon ID is valid Target is Mesh Description Base |

Is Triangle Part Of Ngon |
Determines if this triangle is part of an n-gon Target is Mesh Description Base |

Is Triangle Valid |
Returns whether the passed triangle ID is valid Target is Mesh Description Base |

Is Vertex Instance Valid |
Returns whether the passed vertex instance ID is valid Target is Mesh Description Base |

Is Vertex Orphaned |
Returns whether a given vertex is orphaned, i.e. it doesn't form part of any polygon Target is Mesh Description Base |

Is Vertex Valid |
Returns whether the passed vertex ID is valid Target is Mesh Description Base |

Reserve New Edges |
Reserves space for this number of new edges Target is Mesh Description Base |

Reserve New Polygon Groups |
Reserves space for this number of new polygon groups Target is Mesh Description Base |

Reserve New Polygons |
Reserves space for this number of new polygons Target is Mesh Description Base |

Reserve New Triangles |
Reserves space for this number of new triangles Target is Mesh Description Base |

Reserve New Vertex Instances |
Reserves space for this number of new vertex instances Target is Mesh Description Base |

Reserve New Vertices |
Reserves space for this number of new vertices Target is Mesh Description Base |

Reverse Polygon Facing |
Reverse the winding order of the vertices of this polygon Target is Mesh Description Base |

Set Polygon Group Material Slot Name |
Set Polygon Group Material Slot Name Target is Static Mesh Description |

Set Polygon Polygon Group |
Sets the polygon group associated with a polygon Target is Mesh Description Base |

Set Polygon Vertex Instance |
Set the vertex instance at the given index around the polygon to the new value Target is Mesh Description Base |

Set Vertex Instance UV |
Set Vertex Instance UV Target is Static Mesh Description |

Set Vertex Position |
Sets a vertex position Target is Mesh Description Base |