pyvisi/py_src/normals.py

"""
@author: John NGUI
"""

import vtk

class Normals:
    """
    Class that defines normals. Normals are used to average the normals of 
    points in order to generate better sufaces (in the case of tensors, normals
    avoids the tensors from appearing black in color).
    """

    def __init__(self, object):
        """
        Initialise the normals.

        @type object: vtkPolyData, etc
        @param object: Input for the normals
        """

        self.__object = object
        self.__vtk_poly_data_normals = vtk.vtkPolyDataNormals()
        self.__setInput()

    def __setInput(self):
        """
        Set the input for the normals.
        """

        self.__vtk_poly_data_normals.SetInput(self.__object)

    def _getOutput(self):
        """
        Return the output of the normals.

        @rtype: vtkPolyData
        @return: Polygonal data
        """

        return self.__vtk_poly_data_normals.GetOutput()
1	"""
2	@author: John NGUI
3	"""
4
5	import vtk
6
7	class Normals:
8	"""
9	Class that defines normals. Normals are used to average the normals of
10	points in order to generate better sufaces (in the case of tensors, normals
11	avoids the tensors from appearing black in color).
12	"""
13
14	def __init__(self, object):
15	"""
16	Initialise the normals.
17
18	@type object: vtkPolyData, etc
19	@param object: Input for the normals
20	"""
21
22	self.__object = object
23	self.__vtk_poly_data_normals = vtk.vtkPolyDataNormals()
24	self.__setInput()
25
26	def __setInput(self):
27	"""
28	Set the input for the normals.
29	"""
30
31	self.__vtk_poly_data_normals.SetInput(self.__object)
32
33	def _getOutput(self):
34	"""
35	Return the output of the normals.
36
37	@rtype: vtkPolyData
38	@return: Polygonal data
39	"""
40
41	return self.__vtk_poly_data_normals.GetOutput()