fixes for potential crash / invalid operations on radial fracture of pillar
- make 'embed surface path' find the intended start vertex for its path when it's known
- guard against path being empty before accessing element 0
- guard against invalid edge collapse in mesh boolean that was triggered by this example
#rb david.hill
#rnx
#ushell-cherrypick of 16760529 by Jimmy.Andrews
#preflight 60d49b4557b30200011a0594
[CL 16775195 by Jimmy Andrews in ue5-main branch]
- Refactor recompute-UVs-for-groups/islands out of ParameterizeMeshOp/Tool into RecomputeUVsOp/Tool. RecomputeUVsTool supports selection of active PolygroupLayer when applicable. Add support for auto-repacking.
- Clean up ParameterizeMeshOp/Tool, remove functionality related to recomputation that was moved to Recompute tool, add separate property sets for UVAtlas and XAtlas
- Add FDynamicMeshUVEditor::QuickPack() function to compute UV layout
- Add support for Polygroup Layer selection in SetCollisionGeometryTool, if only one source object is in use
#rb none
#rnx
#jira none
#preflight 60ced4b0be81e800012cc135
[CL 16724375 by Ryan Schmidt in ue5-main branch]
ModelingTools: Replace local code in UVProjectionOp with calls to FDynamicMeshUVEditor. Major rewrite of UVProjectionTool to support ExpMap projection, improve property handling, support world-space dimensions, support re-using previous projection to simplify world-space tiling, support input selections coming from PolyEdit/TriEdit, support ctrl+click and ctrl+shift+click interactions to reposition projection primitive.
#rb none
#rnx
#jira none
#preflight 60b57761f51cd90001f9676c
[CL 16511543 by Ryan Schmidt in ue5-main branch]
Add support for variable float size and bake results per evaluator.
#rb jimmy.andrews michael.balzer
#rnx
#jira UETOOL-3397
#preflight 60aea5a35f6905000159e87b
[CL 16475935 by lonnie li in ue5-main branch]
- Add MakeBoundsFromIndices() utility functions to TAxisAlignedBox3 to simplify computing bounding-box of point sets
- FDynamicMesh3::GetVertexFrame() can now take an externally-provided normal, and so now can be used without computing VertexNormals attribute
- Add FModuloIteration to IteratorUtil for doing quasi-random-ish iterations over index ranges
- Add CollectVertexPositions() to MeshIndexUtil.h, for creating arrays/sets of vertex positions as a one-liner
- Add FMeshWeights::CotanWeightsBlendSafe() to support cotan-based smoothing of arbitrary properties
- Add TMinVolumeBox3::SolveSubsample() which will (quasi-randomly) subsample a set of the input points to reduce cost of box computation
#rb david.hill
#rnx
#jira none
[CL 16450731 by Ryan Schmidt in ue5-main branch]
- FMeshSceneAdapter updates
- if bThickenThinMeshes is enabled, then all instance meshes are converted to DynamicMesh and decomposed to find non-closed regions. Those regions are uniqued into separate meshes. The remaining closed geometry is separated out and kept as instanced.
- various utility functions added to support above
- previous code to explicitly 'thicken' open meshes into solids is removed. Instead unsigned distance is used to determine inside/outside and generate a 1/0 winding number
- instances are now sorted into an octree to speed up winding number evaluations
- If all meshes are closed (or effectively closed via above, ie will return integer winding number) then winding number query can early-out as soon as it finds a non-zero value
- Add hard-normals options in IGeometryProcessing_ApproximateActors (not exposed in MergeActors tool options yet)
- Added hard-normal callucation to ApproximateActorsImpl, and additional profiling
- Allow specification of actual ECollisionTraceFlag options in CreateStaticMeshUtil, instead of just a boolean
- Add FSparseDynamicOctree3::ContainmentQueryCancellable() variant that can early-exit
#rb none
#rnx
#jira none
#preflight 60a686274c320300018d3841
#ROBOMERGE-SOURCE: CL 16410125 in //UE5/Private-Frosty/...
#ROBOMERGE-BOT: STARSHIP (Private-Frosty -> Main) (v804-16311228)
[CL 16412542 by ryan schmidt in ue5-main branch]
- for temp buffers, don't pre-initialize all their values, just make sure their size is big enough
- parallelize the decision of choosing which edges should be queued for later processing
#jira UETOOL-3457
#rb ryan.schmidt
#preflight 60a55930a5fa6d00012f75f7
[CL 16390755 by tyson brochu in ue5-main branch]
- Skip full-mesh normals computation in OffsetMeshRegion if using vertex normals.
- Add operator[] to MeshConnectedComponents.
- Add FSparseDynamicOctree3::ContainmentQuery() to allow for single-point range query.
- Add FMeshFaceSelection::IsSelectionBoundaryEdge() and optimize ExpandToOneRingNeighbours() and ContractBorderByOneRingNeighbours(), now significantly faster for very large selections. Convert VtxTrianglesItr calls to EnumerateVtxTriangles
- Use TestAnyHitTriangle() instead of FindNearestHitTriangle() in TRemoveOccludedTriangles. Reduces cost from 6.4s to 1.2s on a 64-core threadripper for a large-scale (1.4m triangles) visibility-based removal problem
- Optimize FMarchingCubes implementation for large thread counts. Replace single FCriticalSection with indexed sets of FCriticalSection to reduce thread contention. Instead of directly writing to mesh, accumulate mesh vertices and triangles in separate blocks (hashed on grid coordinates) and then build output mesh after generation completes. Add bEnableValueCaching option to skip caching of corner values, which causes lots of thread contention if Implicit function is very cheap (eg a grid-based SDF evaluation). Enable this option in Morphology meshing. Reduces marching cubes cost from ~3.5s to <500ms on a 64-core threadripper for a large-scale (1.4m triangles) Morphology problem.
#rb jimmy.andrews
#rnx
#jira none
#ROBOMERGE-SOURCE: CL 16370702 in //UE5/Private-Frosty/...
#ROBOMERGE-BOT: STARSHIP (Private-Frosty -> Main) (v804-16311228)
[CL 16372561 by ryan schmidt in ue5-main branch]
- add scalar damping to vertex projection and normal fitting
- detect areas that cover holes in the target mesh and don't project in those regions
- expose smoothing parameters for these areas
#jira UETOOL-3554
#ushell-cherrypick of 16170772 by Ryan.Schmidt
#rb ryan.schmidt
#preflight 60a2d17e4f034a000184b785
[CL 16359473 by tyson brochu in ue5-main branch]
- Add FImageAdapter, wraps TImageBuilder of different types and provides a consistent interface, so that other code doesn't need specializations for each image type
- FMeshSceneAdapter now supports the ability to detect and thicken "thin" meshes, by flattening the instances into unique mesh copies (generally necessary due to scaling). Can also now return statistics about the mesh scene, return a full flattened mesh (for debugging), and automatically generate a "closing mesh" that can help to cap off the base of mesh assemblies when trying to generate a solid/etc.
ModelingComponents:
- FWorldRenderCapture now writes via FImageAdapter instead of an Image4f
- FSceneCapturePhotoSet now stores less data for photo sets. BaseColor/Emissive/WorldNormal are 3f, Roughness/Specular/Metallic are 1f
- IApproximateActors and implementation now support optional base-capping, occluded mesh removal, geometric-tolerance simplification, thin mesh auth-thickening. Now creates MICs based on an input Material, instead of new Material. Added ability to emit a flattened debug mesh, and print debug info.
MergeActors:
- Expose above improvements to IApproximateActors
#rb none
#rnx
#jira none
#preflight 609ef005f6c6e3000144c5e2
[CL 16338550 by Ryan Schmidt in ue5-main branch]
