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#!/usr/bin/env python
# -*- coding: utf-8 -*-
'''
=========================================================================
Program: Visualization Toolkit
Module: TestNamedColorsIntegration.py
Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
All rights reserved.
See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
This software is distributed WITHOUT ANY WARRANTY; without even
the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
PURPOSE. See the above copyright notice for more information.
=========================================================================
'''
import vtk
import vtk.test.Testing
from vtk.util.misc import vtkGetDataRoot
VTK_DATA_ROOT = vtkGetDataRoot()
class FixedPointRayCasterNearest(object):
def __init__(self, ren, renWin, iren):
self.ren = ren
self.renWin = renWin
self.iren = iren
# Create a gaussian
gs = vtk.vtkImageGaussianSource()
gs.SetWholeExtent(0, 30, 0, 30, 0, 30)
gs.SetMaximum(255.0)
gs.SetStandardDeviation(5)
gs.SetCenter(15, 15, 15)
# threshold to leave a gap that should show up for
# gradient opacity
t = vtk.vtkImageThreshold()
t.SetInputConnection(gs.GetOutputPort())
t.ReplaceInOn()
t.SetInValue(0)
t.ThresholdBetween(150, 200)
# Use a shift scale to convert to unsigned char
ss = vtk.vtkImageShiftScale()
ss.SetInputConnection(t.GetOutputPort())
ss.SetOutputScalarTypeToUnsignedChar()
# grid will be used for two component dependent
grid0 = vtk.vtkImageGridSource()
grid0.SetDataScalarTypeToUnsignedChar()
grid0.SetGridSpacing(10, 10, 10)
grid0.SetLineValue(200)
grid0.SetFillValue(10)
grid0.SetDataExtent(0, 30, 0, 30, 0, 30)
# use dilation to thicken the grid
d = vtk.vtkImageContinuousDilate3D()
d.SetInputConnection(grid0.GetOutputPort())
d.SetKernelSize(3, 3, 3)
# Now make a two component dependent
iac = vtk.vtkImageAppendComponents()
iac.AddInputConnection(d.GetOutputPort())
iac.AddInputConnection(ss.GetOutputPort())
# Some more gaussians for the four component indepent case
gs1 = vtk.vtkImageGaussianSource()
gs1.SetWholeExtent(0, 30, 0, 30, 0, 30)
gs1.SetMaximum(255.0)
gs1.SetStandardDeviation(4)
gs1.SetCenter(5, 5, 5)
t1 = vtk.vtkImageThreshold()
t1.SetInputConnection(gs1.GetOutputPort())
t1.ReplaceInOn()
t1.SetInValue(0)
t1.ThresholdBetween(150, 256)
gs2 = vtk.vtkImageGaussianSource()
gs2.SetWholeExtent(0, 30, 0, 30, 0, 30)
gs2.SetMaximum(255.0)
gs2.SetStandardDeviation(4)
gs2.SetCenter(12, 12, 12)
gs3 = vtk.vtkImageGaussianSource()
gs3.SetWholeExtent(0, 30, 0, 30, 0, 30)
gs3.SetMaximum(255.0)
gs3.SetStandardDeviation(4)
gs3.SetCenter(19, 19, 19)
t3 = vtk.vtkImageThreshold()
t3.SetInputConnection(gs3.GetOutputPort())
t3.ReplaceInOn()
t3.SetInValue(0)
t3.ThresholdBetween(150, 256)
gs4 = vtk.vtkImageGaussianSource()
gs4.SetWholeExtent(0, 30, 0, 30, 0, 30)
gs4.SetMaximum(255.0)
gs4.SetStandardDeviation(4)
gs4.SetCenter(26, 26, 26)
# we need a few append filters ...
iac1 = vtk.vtkImageAppendComponents()
iac1.AddInputConnection(t1.GetOutputPort())
iac1.AddInputConnection(gs2.GetOutputPort())
iac2 = vtk.vtkImageAppendComponents()
iac2.AddInputConnection(iac1.GetOutputPort())
iac2.AddInputConnection(t3.GetOutputPort())
iac3 = vtk.vtkImageAppendComponents()
iac3.AddInputConnection(iac2.GetOutputPort())
iac3.AddInputConnection(gs4.GetOutputPort())
# create the four component dependend -
# use lines in x, y, z for colors
gridR = vtk.vtkImageGridSource()
gridR.SetDataScalarTypeToUnsignedChar()
gridR.SetGridSpacing(10, 100, 100)
gridR.SetLineValue(250)
gridR.SetFillValue(100)
gridR.SetDataExtent(0, 30, 0, 30, 0, 30)
dR = vtk.vtkImageContinuousDilate3D()
dR.SetInputConnection(gridR.GetOutputPort())
dR.SetKernelSize(2, 2, 2)
gridG = vtk.vtkImageGridSource()
gridG.SetDataScalarTypeToUnsignedChar()
gridG.SetGridSpacing(100, 10, 100)
gridG.SetLineValue(250)
gridG.SetFillValue(100)
gridG.SetDataExtent(0, 30, 0, 30, 0, 30)
dG = vtk.vtkImageContinuousDilate3D()
dG.SetInputConnection(gridG.GetOutputPort())
dG.SetKernelSize(2, 2, 2)
gridB = vtk.vtkImageGridSource()
gridB.SetDataScalarTypeToUnsignedChar()
gridB.SetGridSpacing(100, 100, 10)
gridB.SetLineValue(0)
gridB.SetFillValue(250)
gridB.SetDataExtent(0, 30, 0, 30, 0, 30)
dB = vtk.vtkImageContinuousDilate3D()
dB.SetInputConnection(gridB.GetOutputPort())
dB.SetKernelSize(2, 2, 2)
# need some appending
iacRG = vtk.vtkImageAppendComponents()
iacRG.AddInputConnection(dR.GetOutputPort())
iacRG.AddInputConnection(dG.GetOutputPort())
iacRGB = vtk.vtkImageAppendComponents()
iacRGB.AddInputConnection(iacRG.GetOutputPort())
iacRGB.AddInputConnection(dB.GetOutputPort())
iacRGBA = vtk.vtkImageAppendComponents()
iacRGBA.AddInputConnection(iacRGB.GetOutputPort())
iacRGBA.AddInputConnection(ss.GetOutputPort())
# We need a bunch of opacity functions
# this one is a simple ramp to .2
rampPoint2 = vtk.vtkPiecewiseFunction()
rampPoint2.AddPoint(0, 0.0)
rampPoint2.AddPoint(255, 0.2)
# this one is a simple ramp to 1
ramp1 = vtk.vtkPiecewiseFunction()
ramp1.AddPoint(0, 0.0)
ramp1.AddPoint(255, 1.0)
# this one shows a sharp surface
surface = vtk.vtkPiecewiseFunction()
surface.AddPoint(0, 0.0)
surface.AddPoint(10, 0.0)
surface.AddPoint(50, 1.0)
surface.AddPoint(255, 1.0)
# this one is constant 1
constant1 = vtk.vtkPiecewiseFunction()
constant1.AddPoint(0, 1.0)
constant1.AddPoint(255, 1.0)
# this one is used for gradient opacity
gop = vtk.vtkPiecewiseFunction()
gop.AddPoint(0, 0.0)
gop.AddPoint(20, 0.0)
gop.AddPoint(60, 1.0)
gop.AddPoint(255, 1.0)
# We need a bunch of color functions
# This one is a simple rainbow
rainbow = vtk.vtkColorTransferFunction()
rainbow.SetColorSpaceToHSV()
rainbow.HSVWrapOff()
rainbow.AddHSVPoint(0, 0.1, 1.0, 1.0)
rainbow.AddHSVPoint(255, 0.9, 1.0, 1.0)
# this is constant red
red = vtk.vtkColorTransferFunction()
red.AddRGBPoint(0, 1, 0, 0)
red.AddRGBPoint(255, 1, 0, 0)
# this is constant green
green = vtk.vtkColorTransferFunction()
green.AddRGBPoint(0, 0, 1, 0)
green.AddRGBPoint(255, 0, 1, 0)
# this is constant blue
blue = vtk.vtkColorTransferFunction()
blue.AddRGBPoint(0, 0, 0, 1)
blue.AddRGBPoint(255, 0, 0, 1)
# this is constant yellow
yellow = vtk.vtkColorTransferFunction()
yellow.AddRGBPoint(0, 1, 1, 0)
yellow.AddRGBPoint(255, 1, 1, 0)
#ren = vtk.vtkRenderer()
#renWin = vtk.vtkRenderWindow()
self.renWin.AddRenderer(self.ren)
self.renWin.SetSize(500, 500)
#iren = vtk.vtkRenderWindowInteractor()
self.iren.SetRenderWindow(self.renWin)
self.ren.GetCullers().InitTraversal()
culler = self.ren.GetCullers().GetNextItem()
culler.SetSortingStyleToBackToFront()
# We need 25 mapper / actor pairs which we will render
# in a grid. Going down we will vary the input data
# with the top row unsigned char, then float, then
# two dependent components, then four dependent components
# then four independent components. Going across we
# will vary the rendering method with MIP, Composite,
# Composite Shade, Composite GO, and Composite GO Shade.
# Create the 5 by 5 grids
self.volumeProperty = [[0 for col in range(0, 5)] for row in range(0, 5)]
self.volumeMapper = [[0 for col in range(0, 5)] for row in range(0, 5)]
volume = [[0 for col in range(0, 5)] for row in range(0, 5)]
for i in range(0, 5):
for j in range(0, 5):
self.volumeProperty[i][j] = vtk.vtkVolumeProperty()
self.volumeMapper[i][j] = vtk.vtkFixedPointVolumeRayCastMapper()
self.volumeMapper[i][j].SetSampleDistance(0.25)
self.volumeMapper[i][j].SetNumberOfThreads(1)
volume[i][j] = vtk.vtkVolume()
volume[i][j].SetMapper(self.volumeMapper[i][j])
volume[i][j].SetProperty(self.volumeProperty[i][j])
volume[i][j].AddPosition(i * 30, j * 30, 0)
self.ren.AddVolume(volume[i][j])
for i in range(0, 5):
self.volumeMapper[0][i].SetInputConnection(t.GetOutputPort())
self.volumeMapper[1][i].SetInputConnection(ss.GetOutputPort())
self.volumeMapper[2][i].SetInputConnection(iac.GetOutputPort())
self.volumeMapper[3][i].SetInputConnection(iac3.GetOutputPort())
self.volumeMapper[4][i].SetInputConnection(iacRGBA.GetOutputPort())
self.volumeMapper[i][0].SetBlendModeToMaximumIntensity()
self.volumeMapper[i][1].SetBlendModeToComposite()
self.volumeMapper[i][2].SetBlendModeToComposite()
self.volumeMapper[i][3].SetBlendModeToComposite()
self.volumeMapper[i][4].SetBlendModeToComposite()
self.volumeProperty[0][i].IndependentComponentsOn()
self.volumeProperty[1][i].IndependentComponentsOn()
self.volumeProperty[2][i].IndependentComponentsOff()
self.volumeProperty[3][i].IndependentComponentsOn()
self.volumeProperty[4][i].IndependentComponentsOff()
self.volumeProperty[0][i].SetColor(rainbow)
self.volumeProperty[0][i].SetScalarOpacity(rampPoint2)
self.volumeProperty[0][i].SetGradientOpacity(constant1)
self.volumeProperty[1][i].SetColor(rainbow)
self.volumeProperty[1][i].SetScalarOpacity(rampPoint2)
self.volumeProperty[1][i].SetGradientOpacity(constant1)
self.volumeProperty[2][i].SetColor(rainbow)
self.volumeProperty[2][i].SetScalarOpacity(rampPoint2)
self.volumeProperty[2][i].SetGradientOpacity(constant1)
self.volumeProperty[3][i].SetColor(0, red)
self.volumeProperty[3][i].SetColor(1, green)
self.volumeProperty[3][i].SetColor(2, blue)
self.volumeProperty[3][i].SetColor(3, yellow)
self.volumeProperty[3][i].SetScalarOpacity(0, rampPoint2)
self.volumeProperty[3][i].SetScalarOpacity(1, rampPoint2)
self.volumeProperty[3][i].SetScalarOpacity(2, rampPoint2)
self.volumeProperty[3][i].SetScalarOpacity(3, rampPoint2)
self.volumeProperty[3][i].SetGradientOpacity(0, constant1)
self.volumeProperty[3][i].SetGradientOpacity(1, constant1)
self.volumeProperty[3][i].SetGradientOpacity(2, constant1)
self.volumeProperty[3][i].SetGradientOpacity(3, constant1)
self.volumeProperty[3][i].SetComponentWeight(0, 1)
self.volumeProperty[3][i].SetComponentWeight(1, 1)
self.volumeProperty[3][i].SetComponentWeight(2, 1)
self.volumeProperty[3][i].SetComponentWeight(3, 1)
self.volumeProperty[4][i].SetColor(rainbow)
self.volumeProperty[4][i].SetScalarOpacity(rampPoint2)
self.volumeProperty[4][i].SetGradientOpacity(constant1)
self.volumeProperty[i][2].ShadeOn()
self.volumeProperty[i][4].ShadeOn(0)
self.volumeProperty[i][4].ShadeOn(1)
self.volumeProperty[i][4].ShadeOn(2)
self.volumeProperty[i][4].ShadeOn(3)
self.volumeProperty[0][0].SetScalarOpacity(ramp1)
self.volumeProperty[1][0].SetScalarOpacity(ramp1)
self.volumeProperty[2][0].SetScalarOpacity(ramp1)
self.volumeProperty[3][0].SetScalarOpacity(0, surface)
self.volumeProperty[3][0].SetScalarOpacity(1, surface)
self.volumeProperty[3][0].SetScalarOpacity(2, surface)
self.volumeProperty[3][0].SetScalarOpacity(3, surface)
self.volumeProperty[4][0].SetScalarOpacity(ramp1)
self.volumeProperty[0][2].SetScalarOpacity(surface)
self.volumeProperty[1][2].SetScalarOpacity(surface)
self.volumeProperty[2][2].SetScalarOpacity(surface)
self.volumeProperty[3][2].SetScalarOpacity(0, surface)
self.volumeProperty[3][2].SetScalarOpacity(1, surface)
self.volumeProperty[3][2].SetScalarOpacity(2, surface)
self.volumeProperty[3][2].SetScalarOpacity(3, surface)
self.volumeProperty[4][2].SetScalarOpacity(surface)
self.volumeProperty[0][4].SetScalarOpacity(surface)
self.volumeProperty[1][4].SetScalarOpacity(surface)
self.volumeProperty[2][4].SetScalarOpacity(surface)
self.volumeProperty[3][4].SetScalarOpacity(0, surface)
self.volumeProperty[3][4].SetScalarOpacity(1, surface)
self.volumeProperty[3][4].SetScalarOpacity(2, surface)
self.volumeProperty[3][4].SetScalarOpacity(3, surface)
self.volumeProperty[4][4].SetScalarOpacity(surface)
self.volumeProperty[0][3].SetGradientOpacity(gop)
self.volumeProperty[1][3].SetGradientOpacity(gop)
self.volumeProperty[2][3].SetGradientOpacity(gop)
self.volumeProperty[3][3].SetGradientOpacity(0, gop)
self.volumeProperty[3][3].SetGradientOpacity(2, gop)
self.volumeProperty[4][3].SetGradientOpacity(gop)
self.volumeProperty[3][3].SetScalarOpacity(0, ramp1)
self.volumeProperty[3][3].SetScalarOpacity(2, ramp1)
self.volumeProperty[0][4].SetGradientOpacity(gop)
self.volumeProperty[1][4].SetGradientOpacity(gop)
self.volumeProperty[2][4].SetGradientOpacity(gop)
self.volumeProperty[3][4].SetGradientOpacity(0, gop)
self.volumeProperty[3][4].SetGradientOpacity(2, gop)
self.volumeProperty[4][4].SetGradientOpacity(gop)
self.renWin.Render()
self.ren.GetActiveCamera().Dolly(1.3)
self.ren.GetActiveCamera().Azimuth(15)
self.ren.GetActiveCamera().Elevation(5)
self.ren.ResetCameraClippingRange()
# self.renWin.Render()
def GetVolumeProperty(self):
''' Return the volumeProperty so other tests can use it.'''
return self.volumeProperty
def GetVolumeMapper(self):
''' Return the volumeMapper so other tests can use it.'''
return self.volumeMapper
class TestFixedPointRayCasterNearest(vtk.test.Testing.vtkTest):
def testFixedPointRayCasterNearest(self):
ren = vtk.vtkRenderer()
renWin = vtk.vtkRenderWindow()
iRen = vtk.vtkRenderWindowInteractor()
tFPRCN = FixedPointRayCasterNearest(ren, renWin, iRen)
# render and interact with data
renWin.Render()
img_file = "TestFixedPointRayCasterNearest.png"
vtk.test.Testing.compareImage(iRen.GetRenderWindow(), vtk.test.Testing.getAbsImagePath(img_file), threshold=10)
vtk.test.Testing.interact()
if __name__ == "__main__":
vtk.test.Testing.main([(TestFixedPointRayCasterNearest, 'test')])
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