def NURBS_basis_functions(self,xi,num_derivatives=0):
xi = np.asarray(xi,np.float).reshape(-1,)
spans = NURBSinC.multiFindSpan(self.n,self.p,xi,self.U)
if num_derivatives==1:
N = NURBSinC.multidersNURBSbasis(spans,xi,self.p,1,self.U,self.w)
else:
N = np.zeros((xi.size,1,self.n+1))
N[:,0,:] = NURBSinC.multiNURBSbasis(spans,xi,self.p,self.U,self.w)
return N
def NURBS_basis_functions(self, xi, num_derivatives=0):
xi = np.asarray(xi, np.float).reshape(-1, )
spans = NURBSinC.multiFindSpan(self.n, self.p, xi, self.U)
if num_derivatives == 1:
N = NURBSinC.multidersNURBSbasis(spans, xi, self.p, 1, self.U,
self.w)
else:
N = np.zeros((xi.size, 1, self.n + 1))
N[:, 0, :] = NURBSinC.multiNURBSbasis(spans, xi, self.p, self.U,
self.w)
return N
