avgNurbsSurfacePoints

Go to: Related nodes. Attributes.

The avgNurbsSurfacePoints node computes the weighted average in position and normal of one or more NURBS surface points. The points could be specified as surface parameter (u,v) points or surface control vertex(CV) indices (i,j).

The i-th surface point in XYZ space is computed by evaluating the input NURBS surface connected to `sp[i].is` at (sp[i].u, sp[i].v). The computed position and normal is weighted by a factor of `sp[i].wt`. If the i-th surface point is given as CV indices, the normal at the CV is computed as the normal at the greville point corresponding to the CV.

The output attribute 'result' gives both the position and normal.

The output attribute 'position' gives the position. To get only the weighted average position connect to attribute `r.p` on the node.

The output attribute 'normal' gives the normal. To get only the weighted average normal connect to attribute `r.n` on the node.

Use this node to compute the center of mass one or more NURBS surface points.

birailSrf, squareSrf, spBirailSrf, dpBirailSrf, mpBirailSrf, ffFilletSrf, closeSurface, explodeNurbsShell, boolean, intersectSurface, attachSurface, detachSurface, boundaryBase, boundary, nurbsSurface

cvIthIndex, cvJthIndex, inputSurface, normal, normalX, normalY, normalZ, parameterU, parameterV, position, positionX, positionY, positionZ, result, surfacePoint, weight

Long name (short name)	Type	Default	Flags
surfacePoint (sp)	compound	n/a
Place Holder housing a surface point information.
inputSurface (is) nurbsSurface NULL The input surface
weight (wt) double 0.5 The weighting factor for point.
parameterU (u) double -1000.0 The U parameter value on surface
parameterV (v) double -1000.0 The V parameter value on surface
cvIthIndex (ci) integer -1 The index for the ith cv index
cvJthIndex (cj) integer -1 The index for the jth cv index
result (r)	compound	n/a
All results - container holding weighted position, normal
position (p) double3 0.0, 0.0, 0.0 Computed weighted position (in result compound) positionX (px) distance (double) 0.0cm Computed X value of position positionY (py) distance (double) 0.0cm Computed Y value of position positionZ (pz) distance (double) 0.0cm Computed Z value of position
normal (n) double3 0.0, 0.0, 1.0 Computed weighted normal (in result compound) normalX (nx) distance (double) 0.0cm Computed X value of normal normalY (ny) distance (double) 0.0cm Computed Y value of normal normalZ (nz) distance (double) 1.0cm Computed Z value of normal