1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
|
#!/usr/bin/env python
'''
This little example shows how a cursor can be created in
image viewers, and renderers. The standard TkImageViewerWidget and
TkRenderWidget bindings are used. There is a new binding:
middle button in the image viewer sets the position of the cursor.
'''
import sys
from functools import partial
import vtk
from vtk.test import Testing
from vtk.util.misc import vtkGetDataRoot
from Tkinter import Pack
VTK_DATA_ROOT = vtkGetDataRoot()
import Tkinter
#from vtk.tk.vtkTkRenderWindowInteractor import vtkTkRenderWindowInteractor
from vtk.tk.vtkTkRenderWidget import vtkTkRenderWidget
from vtk.tk.vtkTkImageViewerWidget import vtkTkImageViewerWidget
# Tkinter constants.
E = Tkinter.E
W = Tkinter.W
N = Tkinter.N
S = Tkinter.S
HORIZONTAL = Tkinter.HORIZONTAL
VERTICAL = Tkinter.VERTICAL
RIGHT = Tkinter.RIGHT
LEFT = Tkinter.LEFT
TOP = Tkinter.TOP
BOTTOM = Tkinter.BOTTOM
X = Tkinter.X
BOTH = Tkinter.BOTH
NO = Tkinter.NO
YES = Tkinter.YES
NORMAL = Tkinter.NORMAL
DISABLED = Tkinter.DISABLED
TRUE = Tkinter.TRUE
FALSE = Tkinter.FALSE
# Global values.
CURSOR_X = 20
CURSOR_Y = 20
CURSOR_Z = 20
IMAGE_MAG_X = 4
IMAGE_MAG_Y = 4
IMAGE_MAG_Z = 1
class Cursor3DViewer(Testing.vtkTest):
'''
Provide a testing framework for for cursor3D.
Note:
root, the top-level widget for Tk,
tkrw, the vtkTkRenderWidget and
viewer, the Image viewer
are accessible from any function in this class
after SetUp() has run.
'''
def SetUp(self):
'''
Set up cursor3D
'''
def OnClosing():
self.root.quit()
def ViewerDown(viewer):
ViewerSetZSlice(viewer, viewer.GetZSlice() - 1)
def ViewerUp(viewer):
ViewerSetZSlice(viewer, viewer.GetZSlice() + 1)
def ViewerSetZSlice(viewer, z):
viewer.SetZSlice(z)
txt = 'slice: ' + str(z)
sliceLabel.configure(text=txt)
viewer.Render()
def SetCursorFromViewer(event):
x = int(event.x)
y = int(event.y)
# We have to flip y axis because tk uses upper right origin.
self.root.update_idletasks()
height = int(self.tkvw.configure()['height'][4])
y = height - y
print height
z = self.viewer.GetZSlice()
SetCursor( x / IMAGE_MAG_X, y / IMAGE_MAG_Y, z / IMAGE_MAG_Z )
def SetCursor(x, y, z):
CURSOR_X = x
CURSOR_Y = y
CURSOR_Z = z
axes.SetOrigin(CURSOR_X,CURSOR_Y,CURSOR_Z)
imageCursor.SetCursorPosition(
CURSOR_X * IMAGE_MAG_X,
CURSOR_Y * IMAGE_MAG_Y,
CURSOR_Z * IMAGE_MAG_Z)
self.viewer.Render()
self.renWin.Render()
# Pipeline stuff.
reader = vtk.vtkSLCReader()
reader.SetFileName(VTK_DATA_ROOT + "/Data/neghip.slc")
# Cursor stuff
magnify = vtk.vtkImageMagnify()
magnify.SetInputConnection(reader.GetOutputPort())
magnify.SetMagnificationFactors(IMAGE_MAG_X, IMAGE_MAG_Y ,IMAGE_MAG_Z)
imageCursor = vtk.vtkImageCursor3D()
imageCursor.SetInputConnection(magnify.GetOutputPort())
imageCursor.SetCursorPosition(
CURSOR_X*IMAGE_MAG_X,
CURSOR_Y*IMAGE_MAG_Y,
CURSOR_Z*IMAGE_MAG_Z)
imageCursor.SetCursorValue(255)
imageCursor.SetCursorRadius(50*IMAGE_MAG_X)
axes = vtk.vtkAxes()
axes.SymmetricOn()
axes.SetOrigin(CURSOR_X, CURSOR_Y, CURSOR_Z)
axes.SetScaleFactor(50.0)
axes_mapper = vtk.vtkPolyDataMapper()
axes_mapper.SetInputConnection(axes.GetOutputPort())
axesActor = vtk.vtkActor()
axesActor.SetMapper(axes_mapper)
axesActor.GetProperty().SetAmbient(0.5)
# Image viewer stuff.
self.viewer = vtk.vtkImageViewer()
self.viewer.SetInputConnection(imageCursor.GetOutputPort())
self.viewer.SetZSlice(CURSOR_Z*IMAGE_MAG_Z)
self.viewer.SetColorWindow(256)
self.viewer.SetColorLevel(128)
# Create transfer functions for opacity and color.
opacity_transfer_function = vtk.vtkPiecewiseFunction()
opacity_transfer_function.AddPoint(20, 0.0)
opacity_transfer_function.AddPoint(255, 0.2)
color_transfer_function = vtk.vtkColorTransferFunction()
color_transfer_function.AddRGBPoint(0, 0, 0, 0)
color_transfer_function.AddRGBPoint(64, 1, 0, 0)
color_transfer_function.AddRGBPoint(128, 0, 0, 1)
color_transfer_function.AddRGBPoint(192, 0, 1, 0)
color_transfer_function.AddRGBPoint(255, 0, .2, 0)
# Create properties, mappers, volume actors, and ray cast function.
volume_property = vtk.vtkVolumeProperty()
volume_property.SetColor(color_transfer_function)
# volume_property.SetColor(color_transfer_function[0],
# color_transfer_function[1],
# color_transfer_function[2])
volume_property.SetScalarOpacity(opacity_transfer_function)
composite_function = vtk.vtkVolumeRayCastCompositeFunction()
volume_mapper = vtk.vtkVolumeRayCastMapper()
volume_mapper.SetInputConnection(reader.GetOutputPort())
volume_mapper.SetVolumeRayCastFunction(composite_function)
volume = vtk.vtkVolume()
volume.SetMapper(volume_mapper)
volume.SetProperty(volume_property)
# Create outline.
outline = vtk.vtkOutlineFilter()
outline.SetInputConnection(reader.GetOutputPort())
outline_mapper = vtk.vtkPolyDataMapper()
outline_mapper.SetInputConnection(outline.GetOutputPort())
outlineActor = vtk.vtkActor()
outlineActor.SetMapper(outline_mapper)
outlineActor.GetProperty().SetColor(1, 1, 1)
# Create the renderer.
ren = vtk.vtkRenderer()
ren.AddActor(axesActor)
ren.AddVolume(volume)
ren.SetBackground(0.1, 0.2, 0.4)
self.renWin = vtk.vtkRenderWindow()
self.renWin.AddRenderer(ren)
self.renWin.SetSize(256, 256)
# Create the GUI: two renderer widgets and a quit button.
self.root = Tkinter.Tk()
self.root.title("cursor3D")
# Define what to do when the user explicitly closes a window.
self.root.protocol("WM_DELETE_WINDOW", OnClosing)
# Help label, frame and quit button
helpLabel = Tkinter.Label(self.root,
text=
"MiddleMouse (or shift-LeftMouse) in image viewer to place cursor")
displayFrame = Tkinter.Frame(self.root)
quitButton = Tkinter.Button(self.root, text= "Quit", command=OnClosing)
# Pack the GUI.
helpLabel.pack()
displayFrame.pack(fill=BOTH, expand=TRUE)
quitButton.pack(fill=X)
# Create the viewer widget.
viewerFrame = Tkinter.Frame(displayFrame)
viewerFrame.pack(padx=3, pady=3, side=LEFT, anchor=N,
fill=BOTH, expand=FALSE)
self.tkvw = vtkTkImageViewerWidget(viewerFrame, iv=self.viewer,
width=264, height=264)
viewerControls = Tkinter.Frame(viewerFrame)
viewerControls.pack(side=BOTTOM, anchor=S, fill=BOTH, expand=TRUE)
self.tkvw.pack(side=TOP, anchor=N, fill=BOTH, expand=FALSE)
downButton = Tkinter.Button(viewerControls, text="Down",
command=[ViewerDown,self.viewer])
upButton = Tkinter.Button(viewerControls, text="Up",
command=[ViewerUp,self.viewer])
sliceLabel = Tkinter.Label(viewerControls,
text="slice: "+str(CURSOR_Z*IMAGE_MAG_Z))
downButton.pack(side=LEFT, expand=TRUE, fill=BOTH)
upButton.pack(side=LEFT, expand=TRUE, fill=BOTH)
sliceLabel.pack(side=LEFT, expand=TRUE, fill=BOTH)
# Create the render widget
renderFrame = Tkinter.Frame(displayFrame)
renderFrame.pack(padx=3, pady=3, side=LEFT, anchor=N,
fill=BOTH, expand=TRUE)
self.tkrw = vtkTkRenderWidget(renderFrame, rw=self.renWin,
width=264, height=264)
self.tkrw.pack(side=TOP, anchor=N, fill=BOTH, expand=TRUE)
# Bindings
self.tkvw.BindTkImageViewer()
self.tkrw.BindTkRenderWidget()
# Lets add an extra binding of the middle button in the image viewer
# to set the cursor location.
self.tkvw.bind('<Button-2>',SetCursorFromViewer)
self.tkvw.bind('<Shift-Button-1>',SetCursorFromViewer)
# Associate the functions with the buttons and label.
#
downButton.config(command=partial(ViewerDown, self.viewer))
upButton.config(command=partial(ViewerUp, self.viewer))
def DoIt(self):
self.SetUp()
self.viewer.Render()
self.tkrw.Render()
self.root.update()
# If you want to interact and use the sliders etc,
# uncomment the following line.
#self.root.mainloop()
img_file = "cursor3D.png"
Testing.compareImage(self.viewer.GetRenderWindow(), Testing.getAbsImagePath(img_file))
# Testing.interact()
if __name__ == '__main__':
cases = [(Cursor3DViewer, 'DoIt')]
del Cursor3DViewer
Testing.main(cases)
|
