pyvisi/py_src/imagereslice.py

"""
@author: John NGUI
"""

import vtk

class ImageReslice:
    """
    Class that defines an image reslice used to resize static 
    (no interaction capability) images.
    """

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

        @type object: vtkImageData
        @param object: Image Data
        """

        self.__object = object
        self.__vtk_image_reslice = vtk.vtkImageReslice()

        self.__setupImageReslice()

    def __setupImageReslice(self):
        """
        Setup the image reslice.
        """

        self.__setInput()

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

        self.__vtk_image_reslice.SetInput(self.__object)        

    def setSize(self, size):
        """
        Set the size of the image, between 0 and 2. Size 1 (one) displays the 
        image in its original size (which is the default).  

        @type size: Number
        @param size: Size of the static image
        """

        # By default, with image reslice, the larger the output spacing, the
        # smaller the image. Similarly, the smaller the output spacing, the 
        # larger the image. This behaviour is reversed so that the larger the 
        # size the image. Similarly, the smaller the size, the smaller the
        # image.
        if(size > 1):
            size = 1 - (size - 1)
            self.__vtk_image_reslice.SetOutputSpacing(size, size, size)
        elif(size < 1):
            size = (1 - size) + 1
            self.__vtk_image_reslice.SetOutputSpacing(size, size, size)

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

        @rtype: vtkImageData
        @return: Image data
        """

        return self.__vtk_image_reslice.GetOutput()
1	"""
2	@author: John NGUI
3	"""
4
5	import vtk
6
7	class ImageReslice:
8	"""
9	Class that defines an image reslice used to resize static
10	(no interaction capability) images.
11	"""
12
13	def __init__(self, object):
14	"""
15	Initialise the image reslice.
16
17	@type object: vtkImageData
18	@param object: Image Data
19	"""
20
21	self.__object = object
22	self.__vtk_image_reslice = vtk.vtkImageReslice()
23
24	self.__setupImageReslice()
25
26	def __setupImageReslice(self):
27	"""
28	Setup the image reslice.
29	"""
30
31	self.__setInput()
32
33	def __setInput(self):
34	"""
35	Set the input for the image reslice.
36	"""
37
38	self.__vtk_image_reslice.SetInput(self.__object)
39
40	def setSize(self, size):
41	"""
42	Set the size of the image, between 0 and 2. Size 1 (one) displays the
43	image in its original size (which is the default).
44
45	@type size: Number
46	@param size: Size of the static image
47	"""
48
49	# By default, with image reslice, the larger the output spacing, the
50	# smaller the image. Similarly, the smaller the output spacing, the
51	# larger the image. This behaviour is reversed so that the larger the
52	# size the image. Similarly, the smaller the size, the smaller the
53	# image.
54	if(size > 1):
55	size = 1 - (size - 1)
56	self.__vtk_image_reslice.SetOutputSpacing(size, size, size)
57	elif(size < 1):
58	size = (1 - size) + 1
59	self.__vtk_image_reslice.SetOutputSpacing(size, size, size)
60
61	def _getOutput(self):
62	"""
63	Return the output of the image reslice.
64
65	@rtype: vtkImageData
66	@return: Image data
67	"""
68
69	return self.__vtk_image_reslice.GetOutput()