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This surface information node is the best way to query the control points (also known as control vertices, or CVs) and knots of a surface.

Node nameParentsClassificationMFn typeCompatible function sets

Related nodes

reverseSurface, smoothTangentSrf, projectTangent, rbfSrf

Attributes (8)

controlPoints, inputSurface, knotsU, knotsV, weights, xValue, yValue, zValue

Long name (short name)TypeDefaultFlags
inputSurface (is) nurbsSurfaceNULLoutputinputconnectable
The input surface
controlPoints (cp) double3arrayoutputconnectable
Control points (or control vertices, CVs) of a surface, in U-dominant order.
xValue (xv) distance (double)0.0cmoutputconnectable
X value of a control point
yValue (yv) distance (double)0.0cmoutputconnectable
Y value of a control point
zValue (zv) distance (double)0.0cmoutputconnectable
Z value of a control point
weights (wt) double1.0arrayoutputconnectable
CV weights values for NURBS, else unused
knotsU (ku) double0.0arrayoutputconnectable
U knots for the surface
knotsV (kv) double0.0arrayoutputconnectable
V knots for the surface