Free Electron Operators

Common Operators

BloatOp	enlarge or shrink regions of a surface
ClaspOp	update ties between pairs of locators
ConnectOp	create triangles from just points
CurveCreateOp	create a single curve primitive
CurveSampleOp	redistribute control vertices
ExcarnateOp	reduce surfaces to skeletal lines
ExportOp	save a surface to a file
FollicleOp	add/remove/slide unconnected points associated with a driver surface
GroupOp	create groups of points or primitives
HammerOp	weighted transform (soft mod)
HingeOp	rotate a surface about an axis
HobbleOp	reduce the overall motion of a body (spatial comp)
ImportOp	load file into a surface
InfluenceOp	transfer attribute, weighted by geodesic distance
LengthCorrectOp	adjust segment lengths to match an original
MapOp	load a texture map into an attribute
MirrorOp	copy points across an axis
NoiseOp	apply Perlin noise to points in space
NullOp	pass input to output
OffsetOp	transfer local displacements
OpenSubdivOp	increase surface resolution (using OpenSubdiv)
PartitionOp	determine surface parts based on criteria such as connectivity
PoisonOp	mark undesirable points
PuppetOp	manipulate joints
QuiltOp	add a back side to a surface
RasterOp	save or load a point map to/from a file
RulerOp	visualize and measure aspects of a surface
SpreadsheetOp	view surface attributes as a table
StashOp	store a copy of the input for out-of-line use
SubdivideOp	increase surface resolution
SurfaceAttrConformOp	pick a single attribute value for each fragment
SurfaceAttrCopyOp	copy attributes from one surface to another
SurfaceAttrCreateOp	create attributes
SurfaceAttrLabOp	visualize and/or apply simple algorithms to an attribute
SurfaceAttrRampOp	populate an attribute with ramped values
SurfaceBindOp	prepare data for a SurfaceWrapOp
SurfaceCopyOp	replicate an input surface for each point on a second surface
SurfaceMetricOp	calculate a relationship between two surfaces
SurfaceNormalOp	add normals to a surface
SurfaceProxyOp	create a simplified representation of each fragment
SurfaceSampleOp	apply attributes from another surface
SurfaceSummaryOp	describe some aspects of a surface
SurfaceWalkOp	create a curve that tries to follow a straight line along polygon edges
SurfaceWrapOp	move a bound input to follow the deformation of a reference driver
TubeOp	generate tubes from curves
ValidateOp	check for invalid points

Grass And Hair Operators

BenderOp	interactively manipulate independent curves or narrow surfaces by keys
BladeOp	simulate grass or short hair
ClumpOp	pull input curves towards guide curves
ContractOp	retract input curves towards their roots
CurlOp	push input curves away from their original line in a spiral fashion
DodgeOp	push curves away from a collider
FlatnessOp	rotate each curve towards its facing direction
KinkOp	apply lateral noise along each curve
ScatterOp	create randomly located points on a surface
SpineFitOp	generate a single curve for each primitive surface
TwistBindOp	prepare data for a TwistWrapOp
TwistWrapOp	move a bound input to follow the deformation of reference curves, respecting a twisting attribute

Vegetation Operators

LimberOp	combine disjoint curves into a single hierarchy
TreeOp	simulate vegetation

Ironworks Operators

ChainOp	attach rigid links to arbitrary curves
WayPathOp	generate a curve from waypoints
WayPointOp	append spatial points contributing to a curve
WayRestraintOp	constrain the distance between waypoints

OpenCL Operators

CacheCLOp	store a copy of the input
ClumpCLOp	pull input curves towards guide curves
ContractCLOp	retract input curves towards their roots
CurlCLOp	push input curves away from their original line in a spiral fashion
FlatnessCLOp	rotate each curve towards its facing direction
KinkCLOp	apply lateral noise along each curve
OpenCLOp	parent class to most of the OpenCL operators
TransformCLOp	apply a single transform to all input points

Houdini-Only Operators

CacheOp	store copies of intermediate surfaces
PortalOp	store or retrieve surfaces out-of-line (prototype)
UnveilOp	extract FE surface primitive into native Houdini data
VeilOp	encode native Houdini data into an FE surface primitive

Maya-Only Operators

CurveCombineOp	combine multiple Maya curve objects into a single multi-curve surface
CurveSeparateOp	break apart a multi-curve surface into regular Maya curve objects
JointCombineOp	combine multiple Maya joint objects into a single multi-joint surface
JointSeparateOp	break apart a multi-joint surface into regular Maya joint objects
MeshSeparateOp	separate a multi-part mesh into multiple separate meshes

Prototype and Test Operators

AttachOp	simple wrap as a code example
BindEditOp	alter surface bindings before applying a wrap
BrushTestOp	demonstrate adaptive subdivision
CurvaceousOp	modify regions of curves
DrawTestOp	create geometry using the draw interface
FusionOp	rebuild faces to ensure edges at all intersections
GridWrapOp	wrap based on bindings in texture space
JunkOp	create a surface with invalid floats (nan values)
MimicOp	draw the input into a brush
MultiModOp	multi-context soft transform
NexusOp	edit node connections
RecordOp	send and receive surfaces as generic data records
XRayOp	interactively raytrace a subregion of the 3D viewport