What's New in V3 

• Grooms
  • Graft grooms tool
  • Switched to new Yaml groom format with much wider capability and support
  • Import groom as baked hair and baked guides option
• New Groom modifier
  • "Boxing" modifiers into a single groom node
  • "Unboxing" a groom node back into its constituent modifiers
  • Create preset grooms as "full stack", groom modifier, or baked hair/guides
  • Preset grooms have adjustable parameters
• General
  • Support for figure objects for collision detection
  • Cinema 4D 2024+ support
  • Dynamic baking of modifiers
  • Vertex color channels in modifiers that require it
  • Modifier baking now supports baking strand widths
  • Vertex tangents use Texture Coordinate generation method by default
  • Geodesic distance by default to calculate strand group blending effect
  • Default hair display to viewport is optimized mesh
  • Modifier render vs. viewport visibility support for Ornatrix modifiers
• Performance
  • Up to 100x speed improvements in various parts
  • Circular brush mirroring performance is improved by ~90% (tested on 100K strands)
  • Significant speed increase in Push Away from Surface modifier
  • Significant performance improvements in multiple other areas (Embree 3)
  • Faster loading of "Add Hair" dialog
• Rendering
  • Arnold translator for C4DtoA 4.3 and later
• Mesh from Strands modifier
  • Conform to Surface option smoothly blends the roots to surface
• Edit Guides
  • Option to set default strand channel values
  • Added "Rotate Strands" tool
  • Create brush can add strands per-vertex and per-polygon face
  • (Plant Guides Tool) Option to enable or disable automatic new strand selection
  • Interpolating planted guide between all selected strands instead of only the closest one
  • Ability to move only the roots of strands
  • Painting RGB colors with the Paint brush tool
• Guides from Guide Mesh modifier
  • Modifier preserves strand rotations
• Clump modifier
  • Dynamic clumping option (automatically update clumps when clump count is adjusted)
  • Option to set strand groups based on clump ownership
  • "Ground Displaced Roots" option
• Strand Animation Cache modifier
  • Option to only load specific Alembic curves
  • "Force Consistent Root Positions" parameter
• Surface Comb modifier
  • Per-sink rotation adjustments
• Ground modifier
  • Using Embree, significantly speeding it up
  • Mesh evaluation at specified time
• Filter modifier
  • Option to remove strands evenly
• Noise modifier
  • Range values for Scale parameter
• Mesh from Strands modifier
  • Negative axis options to the 'Proxy Reference Up Axis' parameter
• Generate Strand Data modifier
  Allow applying Generate Strand Data values by strand groups (instead of individually per strand)

 

Fixes 

• Crash with proxy meshes when input hair doesn't have a distribution mesh
• Crash when importing some MetaHuman Alembic grooms
• Guides close to UV edges will flicker on animation when texture islands are present
• Crash trying to access dynamic parameter set descriptor owner
• Groom dialog imports grooms given last selected "import as" setting, while always displaying "full stack" as default
• Guide's orientation change when moving the its root
• The selection brush stops working correctly if 'Affect Selected Only' is enabled
• Incorrect mesh parameter handling when generating yaml grooms
• Push Away from Surface: Crash when using very dense meshes
• Strand Scatter: Scattered objects should inherit the rotations of the target strands
• Crash when merging two Hair From Mesh Strips objects with Merge operator
• Clumper: Undoing "Root Blending Positions" changes will reset the clumps
• Clumper: Clumps reset when enabling Viewport Mesh Strands
• Scatter Strands: Crash when enabling 'Display in Viewport'
• Push Away From Surface: Incorrect collisions in Hair from Mesh Strips
• Delete brush selects wrong strands when ignore backfacing option is off
• Crash when a channel is assigned in Clumper
• Re-fitting graft grooms containing Surface Comb changes hair scaling and orientations
• Crash when using a dense mesh in Push Away from Surface
• Polygon mesh set as blend shape is removed when enabling a hair object
• Smooth Surface operator changes strand rotations when First Edge is used for tangent calculation
• Hair doesn't clear all surface dependencies leading to rare crashes
• Crash when deletions and creations are used together on a deforming mesh
• Crash when a channel is assigned in various operators
• Push Away From Surface: Hair object disappears when adding PAFS modifier
• Warning when brushing hair from baked hair, in some cases
• Curl: Random Seed not working correctly
• Edit Guides: Soft Selection Distance parameter value is too sensitive
• Crash when deleting Hair from Mesh Strips meshes
• Frizz Operator: Incorrect hair deformations with non-identity scene transforms
• Crash when removing distribution mesh in Hair from Guides
• Hair from Guides: Multiplier maps not working when using 'Guides as Hair'
• Curl modifier changes strands even if they are filtered out via groups
• Hair From Guides: Assertion failure when setting Guide Count to `Do not Interpolate` when guide point counts differ
• Assertion/crash when Generate Strand Data SeExpr encounters an error
• Error when setting Filter value to 0
• Moov crash when Use Group Holder is disabled
• Change Width map does not affect hairs generated by Plant Guides tool
• Don't disable widths when they were not edited in Edit Guides
• Selection rectangle size is not correct, resulting in wrong strands being selected
• "Invalid Alembic archive type" gets printed continuously
• Surface Comb triangulation non-smooth transition between polygons
• Surface Comb Triangulation sinks don't factor in sink length
• Incorrect sink length is returned for mirrored sinks
• Clump twist is still applied even for non-clumped strands
• Cannot select strands in Edit Guides when strand groups were previously assigned to ungrounded hair
• GroundStrands: Grounded HFMS strands get straightened when attaching the roots
• Incorrect strand direction in Surface Comb with Mesh Vertex algorithm and coinciding strand/sink position
• BrushShape: Square shape does not work with the Delete brush
• Incorrect Blend Distance in operators when switching value below/above zero
• Crash when attaching roots in Ground modifier
• GenerateStrandsData doesn't update when referenced object moves in the scene
• Incorrect strand direction in Surface Comb with Mesh Vertex algorithm and coinciding strand/sink position
• Strands rotating randomly during animation
• Evaluating an Edit Guides node on top of a mesh multiple time produces incorrect output
• Baking Guides From Mesh into Edit Guides produces no output
• Error when evaluating Edit Guides above a mesh
• Add range values for Noise Scale parameter
• Add dependency on Python
• Detail does not filter Stand Groups
• Hair From Mesh Strips: Adding a mesh strips to the list will cause a crash in some cases
• Ignore backfacing strands doesn't work with CP selection
• Error: Ornatrix: Assert failed when removing a Strip Mesh
• Unable to change strand channel name
• Incorrect direction used for Mesh from Strands conform to surface option with proxy meshes. The results are also smoothed, like they are with flat/cylindrical hair.
• Error/crash when loading Alembic files with unexpected property data types (e.g. when exported from Houdini)
• Assertion/crash when Symmetry plane normal is not of unit length
• 'Assert failed' error when baking the Propagation node
• Animation Cache: Strand channel data is not recorded
• GPU hair crash, reverted to older hair display method
• Edit Guides channel renaming is not saved with the scene
• Exception when loading Alembic files with unexpected property data types
• Groom modifier incorrectly evaluates during graph parameter editing
• Alembic Export crash when Separate Strands and Velocities options are enabled
• EditGuides: Error when using the 'Create' brush with four or more collinear roots
• Surface Comb modifier doesn't preserve sinks when (un)boxing
• Fixed unboxing imported groom modifier creating a duplicate distribution mesh. Simplified distribution object instantiation.
• Make sure propagated strands on a hair generated from a curve are correctly positioned on target mesh
• Propagated strands should not be grounded
• Incorrect twists and rotations when using multiple Rotate operators together
• Conform to Surface uses incorrect "up" axis in Mesh from Strands
• Cannot select groups with index larger than 31 with a pattern in Edit Guides
• Update guide dependencies in Hair From Guides when input guides surface dependencies change
• Edit Guides containing deletions and shape changes produce incorrect results on animated deforming meshes
• Crash when using "Even" option in Filter without a distribution mesh
• Error reloading a scene containing a groom graft
• GroundStrands: Missing text label on the Attach Roots button
• Guides created on V2 look different on V3
• EditGuides: Push Away From Surface Distance value behaves the same below 1.0
• GroomGraft: The hair is pushed behind the distribution mesh when enabling mirroring
• GroomGraft: The groom graft parameters missing from the UI
• Control point rectangle selection in EG doesn't respect object transform
• Roots don't move along surface in strand editing mode
• GroundStrands: Grounding position changes when reloading the scene
• Crash when enabling "Use Face Include" when Surface Comb is above Guides from Mesh

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