A general purpose surface evaluator.
rhinoscriptsyntax.SurfaceEvaluate ( surface_id, parameter, derivative)
rhinoscript.surface.SurfaceEvaluate ( surface_id, parameter, derivative)
surface_id |
Required. String or Guid. The object's identifier. |
parameter |
Required. Tuple. A tuple containing the U,V parameter to evaluate. |
derivative |
Required. Number. The number of derivatives to evaluate. |
List |
A list of length (derivative+1)*(derivative+2)/2 if successful. The elements are as follows:
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None |
If not successful, or on error. |
import rhinoscriptsyntax as rs
def TestSurfaceEvaluate():
srf = rs.GetObject("Select surface to evaluate", rs.filter.surface, True)
if srf is None: return
point = rs.GetPointOnSurface(srf, "Point to evaluate")
if point is None: return
der = rs.GetInteger("Number of derivatives to evaluate", 1, 1)
if der is None: return
uv = rs.SurfaceClosestPoint(srf, point)
res = rs.SurfaceEvaluate(srf, uv, der)
if res is None:
print "Failed to evaluate surface."
return
for i,r in enumerate(res):
print i, " = ", r
TestSurfaceEvaluate()