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#!/usr/bin/env python
# -*- coding: utf-8 -*-
from vtkmodules.vtkIOImage import vtkImageReader
from vtkmodules.vtkImagingCore import vtkImageThreshold
from vtkmodules.vtkRenderingCore import (
vtkActor2D,
vtkImageMapper,
vtkRenderWindow,
vtkRenderWindowInteractor,
vtkRenderer,
)
import vtkmodules.vtkInteractionStyle
import vtkmodules.vtkRenderingFreeType
import vtkmodules.vtkRenderingOpenGL2
import vtkmodules.test.Testing
from vtkmodules.util.misc import vtkGetDataRoot
VTK_DATA_ROOT = vtkGetDataRoot()
class TestThreshold(vtkmodules.test.Testing.vtkTest):
def testThreshold(self):
# This script is for testing the 3D threshold filter.
# Image pipeline
renWin = vtkRenderWindow()
renWin.SetSize(192, 256)
reader = vtkImageReader()
reader.ReleaseDataFlagOff()
reader.SetDataByteOrderToLittleEndian()
reader.SetDataExtent(0, 63, 0, 63, 1, 93)
reader.SetDataSpacing(3.2, 3.2, 1.5)
reader.SetFilePrefix(VTK_DATA_ROOT + "/Data/headsq/quarter")
reader.SetDataMask(0x7fff)
outputtype = ["SignedChar", "UnsignedChar", "Long", "UnsignedLong", "Int", "UnsignedInt",
"Short", "UnsignedShort", "Double", "Float", "Double", "Float"]
replacein = ["ReplaceInOn", "ReplaceInOff"]
replaceout = ["ReplaceOutOn", "ReplaceOutOff"]
thresholds = ["ThresholdByLower(800)", "ThresholdByUpper(1200)", "ThresholdBetween(800, 1200)"]
thresh = list()
map = list()
act = list()
ren = list()
k = 0
for rin in replacein:
for rout in replaceout:
for t in thresholds:
thresh.append(vtkImageThreshold())
thresh[k].SetInValue(2000)
thresh[k].SetOutValue(0)
eval('thresh[k].' + rin + '()')
eval('thresh[k].' + rout + '()')
thresh[k].SetInputConnection(reader.GetOutputPort())
eval('thresh[k].' + t)
eval('thresh[k].SetOutputScalarTypeTo' + outputtype[k] + '()')
map.append(vtkImageMapper())
map[k].SetInputConnection(thresh[k].GetOutputPort())
if k < 3:
map[k].SetColorWindow(255)
map[k].SetColorLevel(127.5)
else:
map[k].SetColorWindow(2000)
map[k].SetColorLevel(1000)
act.append(vtkActor2D())
act[k].SetMapper(map[k])
ren.append(vtkRenderer())
ren[k].AddViewProp(act[k])
renWin.AddRenderer(ren[k])
k += 1
ren[0].SetViewport(0, 0, .33333, .25)
ren[1].SetViewport(.33333, 0, .66667, .25)
ren[2].SetViewport(.66667, 0, 1, .25)
ren[3].SetViewport(0, .25, .33333, .5)
ren[4].SetViewport(.33333, .25, .66667, .5)
ren[5].SetViewport(.66667, .25, 1, .5)
ren[6].SetViewport(0, .5, .33333, .75)
ren[7].SetViewport(.33333, .5, .66667, .75)
ren[8].SetViewport(.66667, .5, 1, .75)
ren[9].SetViewport(0, .75, .33333, 1)
ren[10].SetViewport(.33333, .75, .66667, 1)
ren[11].SetViewport(.66667, .75, 1, 1)
# render and interact with data
iRen = vtkRenderWindowInteractor()
iRen.SetRenderWindow(renWin);
renWin.Render()
img_file = "TestThreshold.png"
vtkmodules.test.Testing.compareImage(iRen.GetRenderWindow(), vtkmodules.test.Testing.getAbsImagePath(img_file))
vtkmodules.test.Testing.interact()
if __name__ == "__main__":
vtkmodules.test.Testing.main([(TestThreshold, 'test')])
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