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):
        """
        Initialise the image reslice.
        """

        self.__vtk_image_reslice = vtk.vtkImageReslice()

    def _setupImageReslice(self, object):
        """
        Setup the image reslice.

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

        self.__object = object
        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 _getImageResliceOutput(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):
14	"""
15	Initialise the image reslice.
16	"""
17
18	self.__vtk_image_reslice = vtk.vtkImageReslice()
19
20	def _setupImageReslice(self, object):
21	"""
22	Setup the image reslice.
23
24	@type object: vtkImageData
25	@param object: Image Data
26	"""
27
28	self.__object = object
29	self.__setInput()
30
31	def __setInput(self):
32	"""
33	Set the input for the image reslice.
34	"""
35
36	self.__vtk_image_reslice.SetInput(self.__object)
37
38	def setSize(self, size):
39	"""
40	Set the size of the image, between 0 and 2. Size 1 (one) displays the
41	image in its original size (which is the default).
42
43	@type size: Number
44	@param size: Size of the static image
45	"""
46
47	# By default, with image reslice, the larger the output spacing, the
48	# smaller the image. Similarly, the smaller the output spacing, the
49	# larger the image. This behaviour is reversed so that the larger the
50	# size the image. Similarly, the smaller the size, the smaller the
51	# image.
52	if(size > 1):
53	size = 1 - (size - 1)
54	self.__vtk_image_reslice.SetOutputSpacing(size, size, size)
55	elif(size < 1):
56	size = (1 - size) + 1
57	self.__vtk_image_reslice.SetOutputSpacing(size, size, size)
58
59	def _getImageResliceOutput(self):
60	"""
61	Return the output of the image reslice.
62
63	@rtype: vtkImageData
64	@return: Image data
65	"""
66
67	return self.__vtk_image_reslice.GetOutput()