Provided a path for building MeshDescriptions for static meshes at runtime, and supporting API.
Clarified use of attributes for static meshes; now some attributes may be considered optional.
Added FStaticMeshAttributes, used for fetching and registering all the attributes required by a static mesh.
Added Blueprint interface for building meshes.
Deprecated a number of existing APIs:
- FMeshDescription methods which referred explicitly to static mesh specific attributes
- StaticMesh attribute registration has been moved to FStaticMeshAttributes
#rb none
[CL 9123037 by Richard TalbotWatkin in Dev-Editor branch]
#jira UE-79195
#rb jimmy.andrews
#rn Add an fbx option to allow compute normals to use weight by area and angle for both staticmesh and skeletalmesh. Add also a staticmesh build options for the feature.
[CL 8364158 by Alexis Matte in Dev-Editor branch]
If you still need to old behavior of searching for a library we use the new PublicSystemLibraries instead (used very sparingly).
Also updated conventions on importing Android libraries to use the newly introduced Android Architecture instead, which is always set to a valid architecuture (unlike Target.Architecture for the general case)
Lastly I updated some build.cs files that were doing filesystem enumeration or copying as they were being parsed, this is highly discouraged (partially because we cache filesystem operations but also it adds a cost to something we expect to be very fast). Any operations like this should be done as part of the build if they have to be done at all.
#rb none
[CL 7918851 by Joakim Lindqvist in Dev-Build branch]
Added new accessors for getting individual SourceModels, or the entire array.
#rb none
#jira none
#ROBOMERGE-OWNER: ben.marsh
#ROBOMERGE-AUTHOR: richard.talbotwatkin
#ROBOMERGE-SOURCE: CL 7668562 in //UE4/Release-4.23/... via CL 7668565
#ROBOMERGE-BOT: BUILD (Main -> Dev-Build) (v388-7785529)
[CL 7797834 by richard talbotwatkin in Dev-Build branch]
Deprecated direct access to UStaticMesh::SourceModels, SectionInfoMap and OriginalSectionInfoMap.
Added new accessors for getting individual SourceModels, or the entire array.
#rb none
#jira none
[CL 7668661 by Richard TalbotWatkin in Dev-Editor branch]
Creating a triangle will also create a 'shadow' polygon for backward compatibility, although this is omitted when serializing.
As with polygons, any missing edges are created when creating a new triangle, and operations such as adjacency are available to triangles, just as for polygons.
The native serialization format for MeshDescription is now based around triangles.
Polygons of arbitrary number of edges may still be represented, and when created, will automatically generate the appropriate number of triangles. Polygons of more than three sides automatically generate 'internal edges', which are owned by the polygon, and which will be regenerated if the polygon is retriangulated. Internal edges are otherwise not distinct from other edges, and can be used to determine connected triangles or vertices.
Direct access to public members of mesh element classes (FMeshVertex, etc) is now deprecated. In particular, vertex instances and edges now hold a list of connected triangles, and the ConnectedPolygons member is deprecated and will be removed (as this data can be derived from the ConnectedTriangles list).
Improved the MeshDescription API, providing more operations, and allowing arrays with different allocators to be provided as results containers.
Fixed several MeshEditing operations.
Added MeshDescription unit tests.
#rb none
[CL 7099758 by Richard TalbotWatkin in Dev-Editor branch]
