def degelev(self, utimes, vtimes=None):
"""Degree elevate the surface.
utimes - degree elevate utimes along u direction.
vtimes - degree elevate vtimes along v direction."""
if vtimes:
if vtimes < 0:
raise NURBSError, 'Degree must be positive'
coefs = numerix.resize(
self.cntrl, (4 * self.cntrl.shape[1], self.cntrl.shape[2]))
coefs, vknots, nh = bspdegelev(self.degree[1], coefs, self.vknots,
vtimes)
coefs = coefs[:, :nh + 1]
self.vknots = vknots[:nh + self.degree[1] + vtimes + 2]
self.degree[1] += vtimes
self.cntrl = numerix.resize(
coefs, (4, self.cntrl.shape[1], coefs.shape[1]))
if utimes:
if utimes < 0:
raise NURBSError, 'Degree must be positive'
coefs = numerix.transpose(self.cntrl, (0, 2, 1))
coefs = numerix.resize(
coefs, (4 * self.cntrl.shape[2], self.cntrl.shape[1]))
coefs, uknots, nh = bspdegelev(self.degree[0], coefs, self.uknots,
utimes)
coefs = coefs[:, :nh + 1]
self.uknots = uknots[:nh + self.degree[0] + utimes + 2]
self.degree[0] += utimes
coefs = numerix.resize(coefs,
(4, self.cntrl.shape[2], coefs.shape[1]))
self.cntrl = numerix.transpose(coefs, (0, 2, 1))
def degelev(self, degree):
"Degree elevate the curve"
if degree < 0:
raise NURBSError, 'degree must be a positive number'
if degree > 0:
cntrl, uknots, nh = bspdegelev(self.degree, self.cntrl, self.uknots, degree)
self.cntrl = cntrl[:,:nh + 1]
self.uknots = uknots[:nh + self.degree + degree + 2]
self.degree += degree
def degelev(self, degree):
"Degree elevate the curve"
if degree < 0:
raise NURBSError, 'degree must be a positive number'
if degree > 0:
cntrl, uknots, nh = bspdegelev(self.degree, self.cntrl, self.uknots, degree)
self.cntrl = cntrl[:,:nh + 1]
self.uknots = uknots[:nh + self.degree + degree + 2]
self.degree += degree
def degelev(self, utimes, vtimes = None):
"""Degree elevate the surface.
utimes - degree elevate utimes along u direction.
vtimes - degree elevate vtimes along v direction."""
if vtimes != None:
if vtimes < 0:
raise NURBSError, 'Degree must be positive'
coefs = np.resize(self.cntrl,(4*self.cntrl.shape[1], self.cntrl.shape[2]))
coefs, vknots, nh = bspdegelev(self.degree[1], coefs, self.vknots, vtimes)
coefs = coefs[:,:nh + 1]
self.vknots = vknots[:nh + self.degree[1] + vtimes + 2]
self.degree[1] += vtimes
self.cntrl = np.resize(coefs, (4, self.cntrl.shape[1], coefs.shape[1]))
if utimes != None:
if utimes < 0:
raise NURBSError, 'Degree must be positive'
coefs = np.transpose(self.cntrl,(0, 2, 1))
coefs = np.resize(coefs,(4*self.cntrl.shape[2], self.cntrl.shape[1]))
coefs, uknots, nh = bspdegelev(self.degree[0], coefs, self.uknots, utimes)
coefs = coefs[:,:nh + 1]
self.uknots = uknots[:nh + self.degree[0] + utimes + 2]
self.degree[0] += utimes
coefs = np.resize(coefs, (4, self.cntrl.shape[2], coefs.shape[1]))
self.cntrl = np.transpose(coefs,(0,2,1))
