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Go to: Synopsis. Flags. Return value. Python examples.

Synopsis

projectTangent( [curve1] [[curve2] [curve3] || [surface1]] , [constructionHistory=boolean], [curvature=boolean], [curvatureScale=linear], [curveOnSurface=boolean], [ignoreEdges=boolean], [name=string], [object=boolean], [polygon=int], [range=boolean], [rebuild=boolean], [replaceOriginal=boolean], [reverseTangent=boolean], [rotate=angle], [tangentDirection=int], [tangentScale=linear])

Note: Strings representing object names and arguments must be separated by commas. This is not depicted in the synopsis.

projectTangent is undoable, queryable, and editable.

The project tangent command is used to align (for tangents) a curve to two other curves or a surface. A surface isoparm may be selected to define the direction (U or V) to align to. The end of the curve must intersect with these other objects. Curvature continuity may also be applied if required. Tangent continuity means the end of the curve is modified to be tangent at the point it meets the other objects. Curvature continuity means the end of the curve is modified to be curvature continuous as well as tangent. If the normal tangent direction is used, the curvature continuity and rotation do not apply. Also, curvature continuity is only available if align to a surface (not with 2 curves).

Flags

constructionHistory, curvature, curvatureScale, curveOnSurface, ignoreEdges, name, object, polygon, range, rebuild, replaceOriginal, reverseTangent, rotate, tangentDirection, tangentScale
Long name (short name) [argument types] Properties
tangentScale(ts) linear queryedit
Tangent scale applied to tangent of curve to align.
Default: 1.0

In query mode, this flag needs a value.
curvatureScale(cs) linear queryedit
Curvature scale applied to curvature of curve to align. Available if curvature option is true.
Default: 0.0

In query mode, this flag needs a value.
rotate(ro) angle queryedit
Amount by which the tangent of the curve to align will be rotated. Available only if the normal direction (3) is not used for tangentDirection.
Default: 0.0

In query mode, this flag needs a value.
tangentDirection(td) int queryedit
Tangent align direction type legal values: 1=u direction (of surface or use first curve), 2=v direction (of surface or use second curve), 3=normal direction (at point of intersection).
Default: 1

In query mode, this flag needs a value.
curvature(c) boolean queryedit
Curvature continuity is on if true and off otherwise.
Default: false

In query mode, this flag needs a value.
reverseTangent(rt) boolean queryedit
Reverse the tangent direction if true and leave it the way it is if false.
Default: false

In query mode, this flag needs a value.
ignoreEdges(ie) boolean queryedit
If false, use the tangents of the trim edge curves if the surface is trimmed. If true, use the tangents of the underlying surface in the U/V directions.
Default: false

In query mode, this flag needs a value.
name(n) string create
Name the resulting object
constructionHistory(ch) boolean create
Turn the construction history on or off (not available in all commands)
object(o) boolean create
Create the result, or just the dependency node (not available in all commands)
replaceOriginal(rpo) boolean create
Create "in place" (i.e., replace) (not available in all commands)
curveOnSurface(cos) boolean create
If possible, create 2D curve as a result (not available in all commands)
polygon(po) int create
The value of this argument controls the type of the object created by this operation (not available in all commands)
  • 0: nurbs surface
  • 1: polygon (use nurbsToPolygonsPref to set the parameters for the conversion)
  • 2: subdivision surface (use nurbsToSubdivPref to set the parameters for the conversion)
  • 3: Bezier surface
  • 4: subdivision surface solid (use nurbsToSubdivPref to set the parameters for the conversion)
range(rn) boolean create
Force a curve range on complete input curve (not available in all commands)
rebuild(rb) boolean create
Rebuild the input curve(s) before using them in the operation. Use nurbsCurveRebuildPref to set the parameters for the conversion. (not available in all commands)
Flag can appear in Create mode of command Flag can appear in Edit mode of command
Flag can appear in Query mode of command Flag can have multiple arguments, passed either as a tuple or a list.

Return value


[string[]] (object name and node name)

Python examples

import maya.cmds as cmds

# Do project tangent with curvature continuity between a curve and a
# nurbs plane surface
cmds.projectTangent( 'curve1', 'nurbsPlane1', c=True )

# Do project tangent between the 3 curves and tangent align the curve
# with the reverse tangent of the second of the other 2 curves
# (i.e. with curve3)
cmds.projectTangent( 'curve1', 'curve2', 'curve3', td=2, rt=True )

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