Houdini 16.5 Nodes Object nodes

Guide Groom object node

Generates guide curves from a skin geometry and does further processing on these using an editable SOP network contained within the node.

Note

The skin geometry is expected to be static. Use Guide Deform to move curves with an animated skin.

Parameters

Rest Skin Source

Skin Source

SOP Geometry

Fetch the skin geometry from an Object or SOP node.

File

Load the skin geometry from a file.

Skin SOP

Fetch the skin geometry from this SOP.

Skin File

Load the skin geometry from this file.

Group

Generate guide curves on this group of primitives.

Skin VDB

Options for generating or loading a VDB representation of the skin geometry. Many of the tools typically used within the Guide Groom object rely on this VDB volume to efficiently avoid skin penetration.

VDB Source

From Skin Geometry

Generate the VDB from the specified skin geometry.

SOP Geometry

Merge the VDB from a SOP.

File

Load the VDB from a file.

Parameters for From Skin Geometry:

Voxel Size

Generate a VDB Volume of the skin geometry using this voxel size.

The volume is used by SOP nodes to push curves out of the skin geometry.

Parameters for SOP Geometry mode:

SOP Path

Merge the skin VDB from this SOP Path.

Group

The group within the SOP geometry to use.

Parameters for File mode:

File

Load the skin VDB from this file path.

Group

The group within the file to use.

Tip

If the SOP or file contains multiple volumes, use @name==surface to fetch the surface VDB only, since this is the only volume used by the grooming tools.

Basic

Distribution

Mode

Scatter On Surface

Scatter guide curves on the skin geometry.

Guide Per Point

Generate a guide curve at each point of the skin geometry.

Use External Geometry

Fetch guides from an external geometry.

Scatter On Surface Parameters

Density

Scatter guides at this density.

This parameter can be overridden using an attribute or texture. To do this, select an option from the drop-down menu next to the parameter.

Scatter Seed

Scatter guides using this seed value.

Relax Iterations

Number of times to relax guide locations after scattering. Higher iterations result in a more even distribution of guides at the cost of more computation time.

External Geometry Parameters

Geometry

Fetch guide curves from this SOP node.

Resample To Match Fur Segments

Resample guides to the segment count used by this node.

Reverse Curves

Reverse incoming curves. Houdini expects the first vertex of curves to be the root of the curve. Use this option if the first vertex of your guides is at the tip.

Snap To Skin

Move guide curves to the skin surface. Use this to fix guides that are slightly offset from the skin.

Guide Creation

Segments

Generate guide curves with this segment count.

Length

Generate guide curves with this initial length.

This parameter can be overridden using an attribute or texture. To do this, select an option from the drop-down menu next to the parameter.

Display

Display As Subdivision Curves

Subdivide curves in the viewport for a smooth appearance.

Display Color

Display curves in this color in the viewport.

Optimization

Bypass Editable SOP Network

Skip cooking of the editable network inside this node. This is useful to get faster feedback while adjusting parameters on this node.

Skin Attribute Transfer

Transfer skin attributes of all types to primitive attributes on the generated curves.

Point Attributes

Transfer these point attributes from the skin.

Vertex Attributes

Transfer these vertex attributes from the skin.

Primitive Attributes

Transfer these primitive attributes from the skin.

Detail Attributes

Transfer these detail attributes from the skin.

File Cache

See the File Cache SOP help for these parameters.

See also

Object nodes

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  • Geometry

    Container for the geometry operators (SOPs) that define a modeled object.

  • Groom Merge

    Merges groom data from multiple objects into one.

  • Guide Deform

    Moves the curves of a groom with animated skin.

  • Guide Groom

    Generates guide curves from a skin geometry and does further processing on these using an editable SOP network contained within the node.

  • Guide Simulate

    Runs a physics simulation on the input guides.

  • Hair Generate

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  • Handle

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  • Mocap Biped 1

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  • Mocap Biped 2

    A male character with motion captured animations.

  • Mocap Biped 3

    A male character with motion captured animations.

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  • Python Script

    The Python Script object is a container for the geometry operators (SOPs) that define a modeled object.

  • Ragdoll Run Example

    Crowd example showing a simple ragdoll setup.

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  • Simple Biped

    A simple and efficient animation rig with full controls.

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    Container for objects.

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