Some DCC may close a 3d scene without closing the application, in that case they must be able to close the DirectLink source as well.
With the simplified DirectLink API (FDatasmithDirectLink) this was only achievable by creating a new scene that would override the existing one, which is not desirable in this case.
Our C# exporters can only use the simplified API at the moment and this seems like a common enough use-case to be added to FDatasmithDirectLink.
#jira UE-140665
#rb Johan.Duparc
#preflight 6290fa2db83292836e093ea2
#preflight 62953a005370042eb043f84a
[CL 20433116 by benoit deschenes in ue5-main branch]
- Restoring previous FDatasmithSceneExporter::Reset() behavior but marking the function as deprecated.
It's previous usage of reseting the export progress without resetting the whole exporter state was discutable and confusing. If users want to fully reset the exporter they don't need the Reset() function.
- Fixing Datasmith Facade inverse scaling error during position conversion
#preflight 624b48d9dc6183e3f547d3b1
#rb Johan.Duparc Kerim.Borchaev
[CL 19625080 by benoit deschenes in ue5-main branch]
rules of thumb:
- Actor transforms are in doubles
- mesh internal data are in floats, except UVs that are in doubles
- compiled 3dsmax, archicad, navisworks, revit, rhino, sketchup, solidworks
#jira UETOOL-5070
#preflight 623f2ee47d49f37dfd3d599b
#rb Benoit.Deschenes
[CL 19533189 by Johan Duparc in ue5-main branch]
This represents UE4/Main @17911760, Release-5.0 @17915875 and Dev-PerfTest @17914035
[CL 17918595 by aurel cordonnier in ue5-release-engine-test branch]
Prepared direct attribute access for deprecation, preferring use of APIs to access static mesh attributes.
Fixed recently merged Enterprise code to comply with new APIs.
Changed all tools to use triangle-centric iteration where possible.
Added new MeshAttributeArray APIs for querying attribute flags, and added a new Mandatory flag.
Various bug fixes.
#rb Alexis.Matte
[CL 13873755 by Richard TalbotWatkin in ue5-main branch]
- Removed hardcoded element type arrays (Vertices, Edges, Triangles etc.). Mesh element types can now be arbitrarily added, with any number of channels.
- Mesh element containers have a much leaner format; instead of sparse arrays, they are now represented by a simple bitarray, determining whether an index is used or not. Consequently, mesh topology is now entirely described with the attribute system, e.g. edge start and end vertices, triangle vertices, etc.
- Support added for attributes of arbitrary dimensions, e.g. float[4] or int[2].
- Support added for attributes which index into another mesh element container.
- Added FMeshElementIndexer: this is an efficient container for maintaining backward references from one element type to another; for example, edges have an attribute specifying which vertices are at each end (an attribute of type FVertexID[2]). With an indexer, it is possible to look up which edges contain a given vertex, even though this is not explicitly stored. Indexers are designed to do minimal allocations and update lazily and in batch when necessary.
- Added support for preserving UV topology in static meshes. UVs are now a first-class element type which may be indexed directly from triangles.
- Added the facility to access the underlying array in an attribute array directly.
- Triangles now directly reference their vertex, edge and UV IDs. Vertex instances are to be deprecated.
- Changed various systems to be triangle-centric rather than polygon-centric, as this is faster. Triangles are presumed to be the elementary face type in a MeshDescription, even if polygons are still supported. The concept of polygons will be somewhat shifted to mean a group of triangles which should be treated collectively for editing purposes.
- Optimised normal/tangent generation and FBX import.
- Deprecated EditableMesh, MeshEditor and StaticMeshEditorExtension plugins - these are to be removed, but they still have certain hooks in place which need removing.
#rb
[CL 13568702 by Richard TalbotWatkin in ue5-main branch]
Fixing memory leak when GC is not called in datasmith mesh exporter
#jira UE-87989
JeanMichel.Dignard
#rb JeanMichel.Dignard
#ROBOMERGE-SOURCE: CL 11461470 in //UE4/Release-4.25/...
#ROBOMERGE-BOT: RELEASE (Release-4.25 -> Release-4.25Plus) (v654-11333218)
[CL 11461475 by benoit deschenes in 4.25-Plus branch]
