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This node is basically used to measure and visually display arcLengths on curves and surfaces at the specified point.

When dealing with curves, it measures the distance of the specified point from the start point of the curve. On the other hand, when dealing with surfaces, it measures the distance of the specified point from the start point in both the u and v directions.

These nodes are created either using the "arcLengthDimension" command or by using the "arc Length" tool. After creation, by using the "move" tool, the shape can be moved around on the curve/surface, and the arcLength values update interactively based on the new position of the object.

Node nameParentsClassificationMFn typeCompatible function sets
arcLengthDimensionnurbsDimShapemath:drawdb/geometry/widgets/measurekArcLengthkBase
kNamedObject
kDependencyNode
kDagNode
kShape
kDimension
kArcLength

Related nodes

dimensionShape, annotationShape, nurbsDimShape, paramDimension, distanceDimShape

Attributes (2)

arcLength, arcLengthInV

Long name (short name)TypeDefaultFlags
arcLength (al) double0.0outputconnectable
Output arcLength value of the curve/surface along u.
arcLengthInV (alv) double0.0outputconnectable
Output arcLength value of the curve/surface along v.