def MaskWithPatch(id,t,c,r,maskArray,centerlines,voronoi):
patch = ExtractPatch(id,centerlines)
tubeFunction = vtkvmtk.vtkvmtkPolyBallLine()
tubeFunction.SetInput(patch)
tubeFunction.SetPolyBallRadiusArrayName(radiusArrayName)
lastSphere = vtk.vtkSphere()
lastSphere.SetRadius(r*1.5)
lastSphere.SetCenter(c)
for i in range(voronoi.GetNumberOfPoints()):
point = [0.0,0.0,0.0]
voronoiVector = [0.0,0.0,0.0]
voronoi.GetPoint(i,point)
voronoiVector[0] = point[0]-c[0]
voronoiVector[1] = point[1]-c[1]
voronoiVector[2] = point[2]-c[2]
voronoiVectorDot = vtk.vtkMath.Dot(voronoiVector,t)
tubevalue = tubeFunction.EvaluateFunction(point)
spherevalue = lastSphere.EvaluateFunction(point)
if (spherevalue<0.0) & (voronoiVectorDot<0.0): continue
elif (tubevalue<=0.0):
maskArray.SetTuple1(i,1)
def _Clip(self, pd):
# The plane implicit function will be >0 for all the points in the positive side
# of the plane (i.e. x s.t. n.(x-o)>0, where n is the plane normal and o is the
# plane origin).
plane = vtkPlane()
plane.SetOrigin(self.Iolet.Centre.x, self.Iolet.Centre.y, self.Iolet.Centre.z)
plane.SetNormal(self.Iolet.Normal.x, self.Iolet.Normal.y, self.Iolet.Normal.z)
# The sphere implicit function will be >0 for all the points outside the sphere.
sphere = vtkSphere()
sphere.SetCenter(self.Iolet.Centre.x, self.Iolet.Centre.y, self.Iolet.Centre.z)
sphere.SetRadius(self.Iolet.Radius)
# The VTK_INTERSECTION operator takes the maximum value of all the registered
# implicit functions. This will result in the function evaluating to >0 for all
# the points outside the sphere plus those inside the sphere in the positive
# side of the plane.
clippingFunction = vtkImplicitBoolean()
clippingFunction.AddFunction(plane)
clippingFunction.AddFunction(sphere)
clippingFunction.SetOperationTypeToIntersection()
clipper = vtkClipPolyData()
clipper.SetInput(pd)
clipper.SetClipFunction(clippingFunction)
# Filter to get part closest to seed point
connectedRegionGetter = vtkPolyDataConnectivityFilter()
connectedRegionGetter.SetExtractionModeToClosestPointRegion()
connectedRegionGetter.SetClosestPoint(*self.SeedPoint)
connectedRegionGetter.SetInputConnection(clipper.GetOutputPort())
connectedRegionGetter.Update()
return connectedRegionGetter.GetOutput()
def testStructured(self):
rt = vtk.vtkRTAnalyticSource()
rt.SetWholeExtent(-5, 5, -5, 5, -5, 5)
rt.Update()
i = rt.GetOutput()
st = vtk.vtkStructuredGrid()
st.SetDimensions(i.GetDimensions())
nps = i.GetNumberOfPoints()
ps = vtk.vtkPoints()
ps.SetNumberOfPoints(nps)
for idx in xrange(nps):
ps.SetPoint(idx, i.GetPoint(idx))
st.SetPoints(ps)
s = vtk.vtkSphere()
s.SetRadius(2)
s.SetCenter(0,0,0)
c = vtk.vtkTableBasedClipDataSet()
c.SetInputData(st)
c.SetClipFunction(s)
c.SetInsideOut(1)
c.Update()
self.assertEqual(c.GetOutput().GetNumberOfCells(), 64)
def openSurfaceAtPoint(self, polyData, seed):
'''
Returns a new surface with an opening at the given seed.
'''
someradius = 1.0
pointLocator = vtk.vtkPointLocator()
pointLocator.SetDataSet(polyData)
pointLocator.BuildLocator()
# find the closest point next to the seed on the surface
# id = pointLocator.FindClosestPoint(int(seed[0]),int(seed[1]),int(seed[2]))
id = pointLocator.FindClosestPoint(seed)
# the seed is now guaranteed on the surface
seed = polyData.GetPoint(id)
sphere = vtk.vtkSphere()
sphere.SetCenter(seed[0], seed[1], seed[2])
sphere.SetRadius(someradius)
clip = vtk.vtkClipPolyData()
clip.SetInputData(polyData)
clip.SetClipFunction(sphere)
clip.Update()
outPolyData = vtk.vtkPolyData()
outPolyData.DeepCopy(clip.GetOutput())
return outPolyData
def _add_ugrid_nodes_to_grid(self, name, diff_node_ids, nodes):
"""
based on:
_add_nastran_nodes_to_grid
"""
nnodes = nodes.shape[0]
assert nnodes > 0, nnodes
# if nnodes == 0:
# return
nnodes = len(diff_node_ids)
points = vtk.vtkPoints()
points.SetNumberOfPoints(nnodes)
for nid in diff_node_ids:
node = nodes[nid, :]
print('nid=%s node=%s' % (nid, node))
points.InsertPoint(nid, *node)
if 1:
elem = vtk.vtkVertex()
elem.GetPointIds().SetId(0, nid)
else:
elem = vtk.vtkSphere()
sphere_size = self._get_sphere_size(dim_max)
elem.SetRadius(sphere_size)
elem.SetCenter(points.GetPoint(nid))
self.alt_grids[name].InsertNextCell(elem.GetCellType(), elem.GetPointIds())
self.alt_grids[name].SetPoints(points)
def SphereDrill(self, m_holelist, m_holeRadius, m_quiet=False):
"""
Drill sphere at locations specified by m_holelist.
:param m_holelist: [list] A list of coordinates where holes are to be drilled
:param m_holeRadius: [float] The radius of the hole to drill
:param m_quiet: [bool]
:return:
"""
m_totalNumOfHoles = len(m_holelist)
if not m_quiet:
t = time.time()
print "Drilling"
for i in xrange(m_totalNumOfHoles):
m_sphere = vtk.vtkSphere()
m_sphere.SetCenter(m_holelist[i])
m_sphere.SetRadius(m_holeRadius)
clipper = vtk.vtkClipPolyData()
clipper.SetInputData(self._data)
clipper.SetClipFunction(m_sphere)
clipper.Update()
clipped = clipper.GetOutput()
self._data.DeepCopy(clipped)
if not m_quiet:
print "\t%s/%s -- %.2f %%" % (i + 1, m_totalNumOfHoles, (i + 1) * 100 / float(m_totalNumOfHoles))
if not m_quiet:
print "Finished: Totaltime used = %.2f s" % (time.time() - t)
pass
def testUnstructured(self):
rt = vtk.vtkRTAnalyticSource()
rt.SetWholeExtent(-5, 5, -5, 5, -5, 5)
t = vtk.vtkThreshold()
t.SetInputConnection(rt.GetOutputPort())
t.ThresholdByUpper(-10)
s = vtk.vtkSphere()
s.SetRadius(2)
s.SetCenter(0,0,0)
c = vtk.vtkTableBasedClipDataSet()
c.SetInputConnection(t.GetOutputPort())
c.SetClipFunction(s)
c.SetInsideOut(1)
c.Update()
self.assertEqual(c.GetOutput().GetNumberOfCells(), 64)
eg = vtk.vtkEnSightGoldReader()
eg.SetCaseFileName(VTK_DATA_ROOT + "/Data/EnSight/elements.case")
eg.Update()
pl = vtk.vtkPlane()
pl.SetOrigin(3.5, 3.5, 0.5)
pl.SetNormal(0, 0, 1)
c.SetInputConnection(eg.GetOutputPort())
c.SetClipFunction(pl)
c.SetInsideOut(1)
c.Update()
data = c.GetOutputDataObject(0).GetBlock(0)
self.assertEqual(data.GetNumberOfCells(), 75)
rw = vtk.vtkRenderWindow()
ren = vtk.vtkRenderer()
rw.AddRenderer(ren)
mapper = vtk.vtkDataSetMapper()
mapper.SetInputData(data)
actor = vtk.vtkActor()
actor.SetMapper(mapper)
ren.AddActor(actor)
ac = ren.GetActiveCamera()
ac.SetPosition(-7.9, 9.7, 14.6)
ac.SetFocalPoint(3.5, 3.5, 0.5)
ac.SetViewUp(0.08, 0.93, -0.34)
rw.Render()
ren.ResetCameraClippingRange()
rtTester = vtk.vtkTesting()
for arg in sys.argv[1:]:
rtTester.AddArgument(arg)
rtTester.AddArgument("-V")
rtTester.AddArgument("tableBasedClip.png")
rtTester.SetRenderWindow(rw)
rw.Render()
rtResult = rtTester.RegressionTest(10)
def __init__(self, parent = None):
super(VTKFrame, self).__init__(parent)
self.vtkWidget = QVTKRenderWindowInteractor(self)
vl = QtGui.QVBoxLayout(self)
vl.addWidget(self.vtkWidget)
vl.setContentsMargins(0, 0, 0, 0)
self.ren = vtk.vtkRenderer()
self.ren.SetBackground(0.1, 0.2, 0.4)
self.vtkWidget.GetRenderWindow().AddRenderer(self.ren)
self.iren = self.vtkWidget.GetRenderWindow().GetInteractor()
sphere1 = vtk.vtkSphere()
sphere1.SetCenter(0.9, 0, 0)
sphere2 = vtk.vtkSphere()
sphere2.SetCenter(-0.9, 0, 0)
implicitBoolean = vtk.vtkImplicitBoolean()
implicitBoolean.AddFunction(sphere1)
implicitBoolean.AddFunction(sphere2)
implicitBoolean.SetOperationTypeToUnion()
#implicitBoolean.SetOperationTypeToIntersection()
# Sample the function
sample = vtk.vtkSampleFunction()
sample.SetSampleDimensions(50, 50, 50)
sample.SetImplicitFunction(implicitBoolean)
sample.SetModelBounds(-3, 3, -3, 3, -3, 3)
# Create the 0 isosurface
contours = vtk.vtkContourFilter()
contours.SetInputConnection(sample.GetOutputPort())
contours.GenerateValues(1, 1, 1)
# Create a mapper
mapper = vtk.vtkPolyDataMapper()
mapper.SetInputConnection(contours.GetOutputPort())
# Create an actor
actor = vtk.vtkActor()
actor.SetMapper(mapper)
self.ren.AddActor(actor)
self.ren.ResetCamera()
self._initialized = False
def Execute(self):
if self.Surface == None:
self.PrintError('Error: no Surface.')
if self.WidgetType == "box":
self.ClipFunction = vtk.vtkPlanes()
elif self.WidgetType == "sphere":
self.ClipFunction = vtk.vtkSphere()
self.Clipper = vtk.vtkClipPolyData()
self.Clipper.SetInput(self.Surface)
self.Clipper.SetClipFunction(self.ClipFunction)
self.Clipper.GenerateClippedOutputOn()
self.Clipper.InsideOutOn()
if not self.vmtkRenderer:
self.vmtkRenderer = vmtkrenderer.vmtkRenderer()
self.vmtkRenderer.Initialize()
self.OwnRenderer = 1
mapper = vtk.vtkPolyDataMapper()
mapper.SetInput(self.Surface)
mapper.ScalarVisibilityOff()
self.Actor = vtk.vtkActor()
self.Actor.SetMapper(mapper)
self.vmtkRenderer.Renderer.AddActor(self.Actor)
if self.WidgetType == "box":
self.ClipWidget = vtk.vtkBoxWidget()
self.ClipWidget.GetFaceProperty().SetColor(0.6,0.6,0.2)
self.ClipWidget.GetFaceProperty().SetOpacity(0.25)
elif self.WidgetType == "sphere":
self.ClipWidget = vtk.vtkSphereWidget()
self.ClipWidget.GetSphereProperty().SetColor(0.6,0.6,0.2)
self.ClipWidget.GetSphereProperty().SetOpacity(0.25)
self.ClipWidget.GetSelectedSphereProperty().SetColor(0.6,0.0,0.0)
self.ClipWidget.GetSelectedSphereProperty().SetOpacity(0.75)
self.ClipWidget.SetRepresentationToSurface()
self.ClipWidget.SetPhiResolution(20)
self.ClipWidget.SetThetaResolution(20)
self.ClipWidget.SetInteractor(self.vmtkRenderer.RenderWindowInteractor)
self.Display()
self.Transform = vtk.vtkTransform()
self.ClipWidget.GetTransform(self.Transform)
if self.OwnRenderer:
self.vmtkRenderer.Deallocate()
if self.CleanOutput == 1:
cleaner = vtk.vtkCleanPolyData()
cleaner.SetInput(self.Surface)
cleaner.Update()
self.Surface = cleaner.GetOutput()
if self.Surface.GetSource():
self.Surface.GetSource().UnRegisterAllOutputs()
def getImplicitSphere(self):
impSphere = vtk.vtkSphere() # implicit sphere
centerPoint = self.getCentralPoint()
radius = self.getRadius()
impSphere.SetRadius(radius)
impSphere.SetCenter(centerPoint)
return impSphere
def Execute(self):
if (self.Surface == None):
self.PrintError('Error: no Surface.')
if self.WidgetType == "box":
self.ClipFunction = vtk.vtkPlanes()
elif self.WidgetType == "sphere":
self.ClipFunction = vtk.vtkSphere()
self.Clipper = vtk.vtkClipPolyData()
self.Clipper.SetInput(self.Surface)
self.Clipper.SetClipFunction(self.ClipFunction)
self.Clipper.GenerateClippedOutputOn()
self.Clipper.InsideOutOn()
if not self.vmtkRenderer:
self.vmtkRenderer = vmtkrenderer.vmtkRenderer()
self.vmtkRenderer.Initialize()
self.OwnRenderer = 1
mapper = vtk.vtkPolyDataMapper()
mapper.SetInput(self.Surface)
mapper.ScalarVisibilityOff()
self.Actor = vtk.vtkActor()
self.Actor.SetMapper(mapper)
self.vmtkRenderer.Renderer.AddActor(self.Actor)
if self.WidgetType == "box":
self.ClipWidget = vtk.vtkBoxWidget()
self.ClipWidget.GetFaceProperty().SetColor(0.6, 0.6, 0.2)
self.ClipWidget.GetFaceProperty().SetOpacity(0.25)
elif self.WidgetType == "sphere":
self.ClipWidget = vtk.vtkSphereWidget()
self.ClipWidget.GetSphereProperty().SetColor(0.6, 0.6, 0.2)
self.ClipWidget.GetSphereProperty().SetOpacity(0.25)
self.ClipWidget.GetSelectedSphereProperty().SetColor(0.6, 0.0, 0.0)
self.ClipWidget.GetSelectedSphereProperty().SetOpacity(0.75)
self.ClipWidget.SetRepresentationToSurface()
self.ClipWidget.SetPhiResolution(20)
self.ClipWidget.SetThetaResolution(20)
self.ClipWidget.SetInteractor(self.vmtkRenderer.RenderWindowInteractor)
self.Display()
if self.OwnRenderer:
self.vmtkRenderer.Deallocate()
if self.CleanOutput == 1:
cleaner = vtk.vtkCleanPolyData()
cleaner.SetInput(self.Surface)
cleaner.Update()
self.Surface = cleaner.GetOutput()
if self.Surface.GetSource():
self.Surface.GetSource().UnRegisterAllOutputs()
def __init__(self, map_actor, text_actor):
self.AddObserver("MouseMoveEvent", self.mouse_move_event)
self.map_actor = map_actor
self.text_actor = text_actor
self.elevation_actor = vtk.vtkActor()
self.sphere = vtk.vtkSphere()
self.cutter = vtk.vtkCutter()
self.stripper = vtk.vtkStripper()
self.tube_filter = vtk.vtkTubeFilter()
self.mapper = vtk.vtkDataSetMapper()
self.picker = vtk.vtkPointPicker()
def create_sphere(radius, center, thetaResolution=50, phiResolution=50):
s = vtk.vtkSphere()
s.SetRadius(radius)
s.SetCenter(center)
ss = vtk.vtkSphereSource()
ss.SetThetaResolution(thetaResolution)
ss.SetPhiResolution(phiResolution)
ss.SetCenter(center)
ss.SetRadius(radius)
return s, ss
def extract_sphere(data, origin, radius):
"""Extracts a spherical slice of data from VTK data object
"""
sphere = vtk.vtkSphere()
sphere.SetRadius(radius)
cutter = vtk.vtkCutter()
cutter.SetInputDataObject(data.reader.GetOutput())
cutter.SetCutFunction(sphere)
cutter.Update()
return cutter.GetOutputDataObject(0)
def CreateSkinClipping(cf):
sphere = vtk.vtkSphere()
sphere.SetCenter(xCenter, yCenter, zCenter)
sphere.SetRadius(radius)
clipper = vtk.vtkClipPolyData()
clipper.SetInputConnection(cf.GetOutputPort())
clipper.SetClipFunction(sphere)
clipper.SetValue(0)
clipper.Update()
return clipper
def getBoundaryNodes(mesh, radius1, radius2, used_nodes):
numPts = mesh.GetNumberOfPoints()
boundary_nodes = vtk.vtkIdList()
#First get the points within a sphere on the boundaries using the boundary points as seed points
for ptID in xrange(0, numPts):
if (mesh.GetPointData().GetArray('GlobalBoundaryPoints').GetValue(ptID)
> 0):
x0, y0, z0 = mesh.GetPoint(ptID)
neighbrs = vtk.vtkExtractGeometry()
sphere1 = vtk.vtkSphere()
sphere1.SetCenter(x0, y0, z0)
sphere1.SetRadius(float(radius1))
sphere2 = vtk.vtkSphere()
sphere2.SetCenter(x0, y0, z0)
sphere2.SetRadius(float(radius2))
diff = vtk.vtkImplicitBoolean()
diff.AddFunction(sphere2)
diff.AddFunction(sphere1)
diff.SetOperationTypeToDifference()
neighbrs.SetImplicitFunction(sphere2)
neighbrs.ExtractInsideOn()
neighbrs.ExtractBoundaryCellsOn()
neighbrs.SetInputData(mesh)
neighbrs.Update()
neighbors = vtk.vtkConnectivityFilter()
neighbors.SetInputData(neighbrs.GetOutput())
neighbors.SetExtractionModeToClosestPointRegion()
neighbors.SetClosestPoint(x0, y0, z0)
neighbors.Update()
neighbors = neighbors.GetOutput()
for neighborID in xrange(0, neighbors.GetNumberOfPoints()):
meshID = mesh.FindPoint(neighbors.GetPoint(neighborID))
if (used_nodes.IsId(meshID) < 0):
boundary_nodes.InsertNextId(meshID)
used_nodes.InsertNextId(meshID)
writeVTU(neighbors, 'test_extraction.vtu')
return [boundary_nodes, used_nodes]
def FindClippingPointOnParentArtery(centerlines, parentCenterlines, toll):
divergingPointID = -1
divergingPoint = [0.0, 0.0, 0.0]
divergingPointMISR = -1
clippingPointID = -1
clippingPoint = [0.0, 0.0, 0.0]
cell0PointIds = vtk.vtkIdList()
cell1PointIds = vtk.vtkIdList()
centerlines.GetCellPoints(
0, cell0PointIds) #this is the cl that goes through the aneurysm
centerlines.GetCellPoints(1, cell1PointIds)
for i in range(
0,
min(cell0PointIds.GetNumberOfIds(),
cell1PointIds.GetNumberOfIds())):
cell0Point = centerlines.GetPoint(cell0PointIds.GetId(i))
cell1Point = centerlines.GetPoint(cell1PointIds.GetId(i))
distanceBetweenPoints = math.sqrt(
vtk.vtkMath.Distance2BetweenPoints(cell0Point, cell1Point))
if (distanceBetweenPoints > toll):
divergingPointID = cell1PointIds.GetId(i)
divergingPoint = centerlines.GetPoint(cell1PointIds.GetId(i))
divergingPointMISR = centerlines.GetPointData().GetArray(
radiusArrayName).GetTuple1(cell1PointIds.GetId(i))
break
MISphere = vtk.vtkSphere()
MISphere.SetCenter(divergingPoint)
MISphere.SetRadius(divergingPointMISR)
tempPoint = [0.0, 0.0, 0.0]
for i in range(divergingPointID, 0, -1):
value = MISphere.EvaluateFunction(centerlines.GetPoint(i))
if (value >= 0.0):
tempPoint = centerlines.GetPoint(i)
break
locator = vtk.vtkPointLocator()
locator.SetDataSet(parentCenterlines)
locator.BuildLocator()
clippingPointID = locator.FindClosestPoint(tempPoint)
clippingPoint = parentCenterlines.GetPoint(clippingPointID)
return clippingPoint, divergingPoint
def MakeScalars(dims, origin, spacing, scalars):
# Implicit function used to compute scalars
sphere = vtk.vtkSphere()
sphere.SetRadius(3)
sphere.SetCenter(5, 5, 5)
scalars.SetNumberOfTuples(dims[0] * dims[1] * dims[2])
for k in range(0, dims[2]):
z = origin[2] + spacing[2] * k
for j in range(0, dims[1]):
y = origin[1] + spacing[1] * j
for i in range(0, dims[0]):
x = origin[0] + spacing[0] * i
scalars.SetValue(k * dims[0] * dims[1] + j * dims[0] + i,
sphere.EvaluateFunction(x, y, z))
def mouseMoveEvent(self, obj, event):
clickPos = self.GetInteractor().GetEventPosition()
picker = vtk.vtkPointPicker()
picker.Pick(clickPos[0], clickPos[1], 0, self.GetDefaultRenderer())
point = picker.GetPointId()
if (point != -1):
altitude = self.grid.GetPointData().GetScalars().GetValue(point)
self.textActor.SetInput("Altitude : " + str(altitude) + "m")
altitudeSphere = vtk.vtkSphere()
altitudeSphere.SetRadius(EARTH_RADIUS + altitude)
self.cutter.SetCutFunction(altitudeSphere)
self.renWin.Render()
self.OnMouseMove()
return
def main():
colors = vtk.vtkNamedColors()
sphere = vtk.vtkSphere()
sphere.SetCenter(0, 0, 0)
sphere.SetRadius(0.5)
# The sample function generates a distance function from the implicit
# function. This is then contoured to get a polygonal surface.
sample = vtk.vtkSampleFunction()
sample.SetImplicitFunction(sphere)
sample.SetModelBounds(-.5, .5, -.5, .5, -.5, .5)
sample.SetSampleDimensions(20, 20, 20)
sample.ComputeNormalsOff()
# contour
surface = vtk.vtkContourFilter()
surface.SetInputConnection(sample.GetOutputPort())
surface.SetValue(0, 0.0)
# mapper
mapper = vtk.vtkPolyDataMapper()
mapper.SetInputConnection(surface.GetOutputPort())
mapper.ScalarVisibilityOff()
actor = vtk.vtkActor()
actor.SetMapper(mapper)
actor.GetProperty().EdgeVisibilityOn()
actor.GetProperty().SetColor(colors.GetColor3d('AliceBlue'))
actor.GetProperty().SetEdgeColor(colors.GetColor3d('SteelBlue'))
# A renderer and render window
renderer = vtk.vtkRenderer()
renderer.SetBackground(colors.GetColor3d('Silver'))
# add the actor
renderer.AddActor(actor)
# render window
renwin = vtk.vtkRenderWindow()
renwin.AddRenderer(renderer)
renwin.SetWindowName('ImplicitSphere1')
# An interactor
interactor = vtk.vtkRenderWindowInteractor()
interactor.SetRenderWindow(renwin)
# Start
interactor.Initialize()
renwin.Render()
interactor.Start()
def main():
colors = vtk.vtkNamedColors()
# Set the background color.
colors.SetColor("BkgColor", [51, 77, 102, 255])
sphere = vtk.vtkSphere()
# Sample the function
sample = vtk.vtkSampleFunction()
sample.SetSampleDimensions(50, 50, 50)
sample.SetImplicitFunction(sphere)
value = 2.0
xmin = -value
xmax = value
ymin = -value
ymax = value
zmin = -value
zmax = value
sample.SetModelBounds(xmin, xmax, ymin, ymax, zmin, zmax)
# Create the 0 isosurface
contours = vtk.vtkContourFilter()
contours.SetInputConnection(sample.GetOutputPort())
contours.GenerateValues(1, 1, 1)
# Map the contours to graphical primitives
contourMapper = vtk.vtkPolyDataMapper()
contourMapper.SetInputConnection(contours.GetOutputPort())
contourMapper.ScalarVisibilityOff()
# Create an actor for the contours
contourActor = vtk.vtkActor()
contourActor.SetMapper(contourMapper)
# Visualize
renderer = vtk.vtkRenderer()
renderWindow = vtk.vtkRenderWindow()
renderWindow.AddRenderer(renderer)
renderWindow.SetWindowName('ImplicitSphere')
interactor = vtk.vtkRenderWindowInteractor()
interactor.SetRenderWindow(renderWindow)
renderer.AddActor(contourActor)
renderer.SetBackground(colors.GetColor3d("BkgColor"))
renderWindow.Render()
interactor.Start()
def vtk_sphere(center, radius):
"""Returns a vtk sphere object based on the bounds
Args:
center (list): Center of the sphere
radius (float): Radius of the sphere
Returns:
sphere (vtkSphere): A vtkSphere
"""
sphere = vtk.vtkSphere()
sphere.SetCenter(center)
sphere.SetRadius(radius)
return sphere
def make_blob(n, radius):
blob_image = vtk.vtkImageData()
max_r = 50 - 2.0 * radius
random_sequence = vtk.vtkMinimalStandardRandomSequence()
random_sequence.SetSeed(5071)
for i in range(0, n):
sphere = vtk.vtkSphere()
sphere.SetRadius(radius)
x = random_sequence.GetRangeValue(-max_r, max_r)
random_sequence.Next()
y = random_sequence.GetRangeValue(-max_r, max_r)
random_sequence.Next()
z = random_sequence.GetRangeValue(-max_r, max_r)
random_sequence.Next()
sphere.SetCenter(int(x), int(y), int(z))
sampler = vtk.vtkSampleFunction()
sampler.SetImplicitFunction(sphere)
sampler.SetOutputScalarTypeToFloat()
sampler.SetSampleDimensions(100, 100, 100)
sampler.SetModelBounds(-50, 50, -50, 50, -50, 50)
thres = vtk.vtkImageThreshold()
thres.SetInputConnection(sampler.GetOutputPort())
thres.ThresholdByLower(radius * radius)
thres.ReplaceInOn()
thres.ReplaceOutOn()
thres.SetInValue(i + 1)
thres.SetOutValue(0)
thres.Update()
if i == 0:
blob_image.DeepCopy(thres.GetOutput())
max_value = vtk.vtkImageMathematics()
max_value.SetInputData(0, blob_image)
max_value.SetInputData(1, thres.GetOutput())
max_value.SetOperationToMax()
max_value.Modified()
max_value.Update()
blob_image.DeepCopy(max_value.GetOutput())
return blob_image
def testImage(self):
r = vtk.vtkRTAnalyticSource()
r.SetWholeExtent(-5, 5, -5, 5, -5, 5)
r.Update()
s = vtk.vtkSphere()
s.SetRadius(2)
s.SetCenter(0,0,0)
c = vtk.vtkTableBasedClipDataSet()
c.SetInputConnection(r.GetOutputPort())
c.SetClipFunction(s)
c.SetInsideOut(1)
c.Update()
self.assertEqual(c.GetOutput().GetNumberOfCells(), 64)
def move_past_sphere(centerline, center, r, start, step=-1, stop=0, X=0.8):
"""Moves a point along the centerline until it as outside MIS"""
# Create the minimal inscribed sphere
MISphere = vtk.vtkSphere()
MISphere.SetCenter(center)
MISphere.SetRadius(r * X)
tempPoint = [0.0, 0.0, 0.0]
# Go the length of one MISR backwards
for i in range(start, stop, step):
value = MISphere.EvaluateFunction(centerline.GetPoint(i))
if (value >= 0.0):
tempPoint = centerline.GetPoint(i)
break
r = centerline.GetPointData().GetArray(radiusArrayName).GetTuple1(i)
return tempPoint, r
def testImage(self):
r = vtk.vtkRTAnalyticSource()
r.SetWholeExtent(-5, 5, -5, 5, -5, 5)
r.Update()
s = vtk.vtkSphere()
s.SetRadius(2)
s.SetCenter(0,0,0)
c = vtk.vtkTableBasedClipDataSet()
c.SetInputConnection(r.GetOutputPort())
c.SetClipFunction(s)
c.SetInsideOut(1)
c.Update()
self.assertEqual(c.GetOutput().GetNumberOfCells(), 64)
def create_renderer_3(bone, skin):
'''
Return the third renderer
bone: the bone dataset
skin: the skin dataset
'''
# creating the sphere clipping
radius = 60
center = [70, 30, 100]
sphere = vtk.vtkSphere()
sphere.SetRadius(radius)
sphere.SetCenter(center)
# clipping
clipper = vtk.vtkClipDataSet()
clipper.SetClipFunction(sphere)
clipper.SetInputConnection(skin.GetOutputPort())
skin = clipper
# creating actors
bone_actor = create_actor(bone)
bone_actor.GetProperty().SetColor(0.94, 0.94, 0.94)
skin_actor = create_actor(skin)
skin_actor.GetProperty().SetColor(0.8, 0.62, 0.62)
# creating the sphere actor ----
# sampling using the sphere implicit function
sample = vtk.vtkSampleFunction()
sample.SetImplicitFunction(sphere)
sample.SetSampleDimensions(50, 50, 50)
sample.SetModelBounds(center[0] - radius, center[0] + radius,
center[1] - radius, center[1] + radius,
center[2] - radius, center[2] + radius)
# contouring. The sphere is described by a 0 iso-value
sphere_actor = create_iso_actor(sample, 0)
# design
sphere_actor.GetProperty().SetColor(0.85, 0.8, 0.1)
sphere_actor.GetProperty().SetOpacity(0.15)
# creating renderer
ren = create_renderer([bone_actor, skin_actor, sphere_actor])
ren.SetBackground(0.827, 0.824, 1)
return ren
def create_sphere_clipping(vtk_algo, radius, coordinates):
"""Create a clipping actor between the vtk_object provided and a sphere at the coordinates and of the radius
:param vtk_algo: The object to clip with the sphere
:param radius: The radius of the sphere
:param coordinates: The coordinates of the sphere
:returns: An actor representing the object clipped with the sphere
"""
sphere = vtk.vtkSphere()
sphere.SetRadius(radius)
sphere.SetCenter(coordinates)
clipper = vtk.vtkClipPolyData()
clipper.SetInputConnection(vtk_algo.GetOutputPort())
clipper.SetClipFunction(sphere)
clipper.GenerateClippedOutputOn()
clipper.SetValue(0.5)
return create_actor(clipper)
def FindClippingPointOnParentArtery(centerlines,parentCenterlines,toll):
divergingPointID = -1
divergingPoint = [0.0,0.0,0.0]
divergingPointMISR = -1
clippingPointID = -1
clippingPoint = [0.0,0.0,0.0]
cell0PointIds = vtk.vtkIdList()
cell1PointIds = vtk.vtkIdList()
centerlines.GetCellPoints(0,cell0PointIds) #this is the cl that goes through the aneurysm
centerlines.GetCellPoints(1,cell1PointIds)
for i in range(0,min(cell0PointIds.GetNumberOfIds(),cell1PointIds.GetNumberOfIds())):
cell0Point = centerlines.GetPoint(cell0PointIds.GetId(i))
cell1Point = centerlines.GetPoint(cell1PointIds.GetId(i))
distanceBetweenPoints = math.sqrt(vtk.vtkMath.Distance2BetweenPoints(cell0Point,cell1Point))
if (distanceBetweenPoints>toll):
divergingPointID = cell1PointIds.GetId(i)
divergingPoint = centerlines.GetPoint(cell1PointIds.GetId(i))
divergingPointMISR = centerlines.GetPointData().GetArray(radiusArrayName).GetTuple1(cell1PointIds.GetId(i))
break
MISphere = vtk.vtkSphere()
MISphere.SetCenter(divergingPoint)
MISphere.SetRadius(divergingPointMISR)
tempPoint = [0.0,0.0,0.0]
for i in range(divergingPointID,0,-1):
value = MISphere.EvaluateFunction(centerlines.GetPoint(i))
if (value>=0.0):
tempPoint = centerlines.GetPoint(i)
break
locator = vtk.vtkPointLocator()
locator.SetDataSet(parentCenterlines)
locator.BuildLocator()
clippingPointID = locator.FindClosestPoint(tempPoint)
clippingPoint = parentCenterlines.GetPoint(clippingPointID)
return clippingPoint,divergingPoint
def testRectilinear(self):
rt = vtk.vtkRTAnalyticSource()
rt.SetWholeExtent(-5, 5, -5, 5, -5, 5)
rt.Update()
i = rt.GetOutput()
r = vtk.vtkRectilinearGrid()
dims = i.GetDimensions()
r.SetDimensions(dims)
exts = i.GetExtent()
orgs = i.GetOrigin()
xs = vtk.vtkFloatArray()
xs.SetNumberOfTuples(dims[0])
for d in range(dims[0]):
xs.SetTuple1(d, orgs[0] + exts[0] + d)
r.SetXCoordinates(xs)
ys = vtk.vtkFloatArray()
ys.SetNumberOfTuples(dims[1])
for d in range(dims[1]):
ys.SetTuple1(d, orgs[1] + exts[2] + d)
r.SetYCoordinates(ys)
zs = vtk.vtkFloatArray()
zs.SetNumberOfTuples(dims[2])
for d in range(dims[2]):
zs.SetTuple1(d, orgs[2] + exts[4] + d)
r.SetZCoordinates(zs)
s = vtk.vtkSphere()
s.SetRadius(2)
s.SetCenter(0,0,0)
c = vtk.vtkTableBasedClipDataSet()
c.SetInputData(r)
c.SetClipFunction(s)
c.SetInsideOut(1)
c.Update()
self.assertEqual(c.GetOutput().GetNumberOfCells(), 64)
def testRectilinear(self):
rt = vtk.vtkRTAnalyticSource()
rt.SetWholeExtent(-5, 5, -5, 5, -5, 5)
rt.Update()
i = rt.GetOutput()
r = vtk.vtkRectilinearGrid()
dims = i.GetDimensions()
r.SetDimensions(dims)
exts = i.GetExtent()
orgs = i.GetOrigin()
xs = vtk.vtkFloatArray()
xs.SetNumberOfTuples(dims[0])
for d in range(dims[0]):
xs.SetTuple1(d, orgs[0] + exts[0] + d)
r.SetXCoordinates(xs)
ys = vtk.vtkFloatArray()
ys.SetNumberOfTuples(dims[1])
for d in range(dims[1]):
ys.SetTuple1(d, orgs[1] + exts[2] + d)
r.SetYCoordinates(ys)
zs = vtk.vtkFloatArray()
zs.SetNumberOfTuples(dims[2])
for d in range(dims[2]):
zs.SetTuple1(d, orgs[2] + exts[4] + d)
r.SetZCoordinates(zs)
s = vtk.vtkSphere()
s.SetRadius(2)
s.SetCenter(0,0,0)
c = vtk.vtkTableBasedClipDataSet()
c.SetInputData(r)
c.SetClipFunction(s)
c.SetInsideOut(1)
c.Update()
self.assertEqual(c.GetOutput().GetNumberOfCells(), 64)
def move_past_sphere(centerline,
center,
r,
start,
step=-1,
stop=0,
scale_factor=0.8):
"""Moves a point along the centerline until it as outside the a sphere with radius (r)
and a center (center).
Args:
centerline (vtkPolyData): Centerline to move along.
center (list): point list of the center of the sphere
r (float): the radius of a sphere
start (int): id of the point along the centerline where to start.
step (int): direction along the centerline.
stop (int): ID along centerline, for when to stop searching.
scale_factor (float): Scale the radius with this factor.
Returns:
tmp_point (list): The first point on the centerline outside the sphere
r (float): minimal inscribed sphere radius at the new point.
i (int): the centerline ID at the new point.
"""
# Create the minimal inscribed sphere
misr_sphere = vtk.vtkSphere()
misr_sphere.SetCenter(center)
misr_sphere.SetRadius(r * scale_factor)
tmp_point = [0.0, 0.0, 0.0]
# Go the length of one MISR backwards
for i in range(start, stop, step):
value = misr_sphere.EvaluateFunction(centerline.GetPoint(i))
if value >= 0.0:
tmp_point = centerline.GetPoint(i)
break
r = centerline.GetPointData().GetArray(radiusArrayName).GetTuple1(i)
return tmp_point, r, i
def _Clip(self, pd):
# The plane implicit function will be >0 for all the points in the positive side
# of the plane (i.e. x s.t. n.(x-o)>0, where n is the plane normal and o is the
# plane origin).
plane = vtkPlane()
plane.SetOrigin(self.Iolet.Centre.x, self.Iolet.Centre.y,
self.Iolet.Centre.z)
plane.SetNormal(self.Iolet.Normal.x, self.Iolet.Normal.y,
self.Iolet.Normal.z)
# The sphere implicit function will be >0 for all the points outside
# the sphere.
sphere = vtkSphere()
sphere.SetCenter(self.Iolet.Centre.x, self.Iolet.Centre.y,
self.Iolet.Centre.z)
sphere.SetRadius(self.Iolet.Radius)
# The VTK_INTERSECTION operator takes the maximum value of all the registered
# implicit functions. This will result in the function evaluating to >0 for all
# the points outside the sphere plus those inside the sphere in the positive
# side of the plane.
clippingFunction = vtkImplicitBoolean()
clippingFunction.AddFunction(plane)
clippingFunction.AddFunction(sphere)
clippingFunction.SetOperationTypeToIntersection()
clipper = vtkClipPolyData()
clipper.SetInputData(pd)
clipper.SetClipFunction(clippingFunction)
# Filter to get part closest to seed point
connectedRegionGetter = vtkPolyDataConnectivityFilter()
connectedRegionGetter.SetExtractionModeToClosestPointRegion()
connectedRegionGetter.SetClosestPoint(*self.SeedPoint)
connectedRegionGetter.SetInputConnection(clipper.GetOutputPort())
connectedRegionGetter.Update()
return connectedRegionGetter.GetOutput()
print("Minor Version: ", rpd.GetFileMinorVersion())
print("File Version: ", rpd.GetFileVersion())
# Compare the strings and make sure a version difference is published.
if not "4.2" in legacyOutStr:
print("Bad legacy writer output")
sys.exit(1)
if not "5.1" in outStr:
print("Bad writer output")
sys.exit(1)
# Write / read unstructured data - legacy version
# Convert polydata to unstructured grid
print("\nI/O vtkUnstructuredGrid")
sph = vtk.vtkSphere()
sph.SetRadius(10000000)
extract = vtk.vtkExtractGeometry()
extract.SetInputConnection(sphere.GetOutputPort())
extract.SetImplicitFunction(sph)
wug = vtk.vtkUnstructuredGridWriter()
wug.SetFileVersion(42)
wug.WriteToOutputStringOn()
wug.SetInputConnection(extract.GetOutputPort())
wug.Write()
legacyOutStr = wug.GetOutputString()
#print(legacyOutStr)
rug = vtk.vtkUnstructuredGridReader()
VTK_DATA_ROOT = vtkGetDataRoot() # create pipeline # pl3d = vtk.vtkMultiBlockPLOT3DReader() pl3d.SetXYZFileName(VTK_DATA_ROOT + "/Data/combxyz.bin") pl3d.SetQFileName(VTK_DATA_ROOT + "/Data/combq.bin") pl3d.SetScalarFunctionNumber(100) pl3d.SetVectorFunctionNumber(202) pl3d.Update() output = pl3d.GetOutput().GetBlock(0) # create a crazy implicit function center = output.GetCenter() sphere = vtk.vtkSphere() sphere.SetCenter(center) sphere.SetRadius(2.0) sphere2 = vtk.vtkSphere() sphere2.SetCenter(center[0] + 4.0, center[1], center[2]) sphere2.SetRadius(4.0) boolOp = vtk.vtkImplicitBoolean() boolOp.SetOperationTypeToUnion() boolOp.AddFunction(sphere) boolOp.AddFunction(sphere2) # clip the structured grid to produce a tetrahedral mesh clip = vtk.vtkClipDataSet() clip.SetInputData(output)
# implicit function. In this case the implicit function is formed by # the boolean combination of two ellipsoids. import vtk # Here we create two ellipsoidal implicit functions and boolean them # together tto form a "cross" shaped implicit function. quadric = vtk.vtkQuadric() quadric.SetCoefficients(.5, 1, .2, 0, .1, 0, 0, .2, 0, 0) sample = vtk.vtkSampleFunction() sample.SetSampleDimensions(50, 50, 50) sample.SetImplicitFunction(quadric) sample.ComputeNormalsOff() trans = vtk.vtkTransform() trans.Scale(1, .5, .333) sphere = vtk.vtkSphere() sphere.SetRadius(0.25) sphere.SetTransform(trans) trans2 = vtk.vtkTransform() trans2.Scale(.25, .5, 1.0) sphere2 = vtk.vtkSphere() sphere2.SetRadius(0.25) sphere2.SetTransform(trans2) union = vtk.vtkImplicitBoolean() union.AddFunction(sphere) union.AddFunction(sphere2) union.SetOperationType(0) #union # Here is where it gets interesting. The implicit function is used to # extract those cells completely inside the function. They are then # shrunk to help show what was extracted.
iren = vtk.vtkRenderWindowInteractor() iren.SetRenderWindow(renWin) # create implicit function primitives cone = vtk.vtkCone() cone.SetAngle(20) vertPlane = vtk.vtkPlane() vertPlane.SetOrigin(.1, 0, 0) vertPlane.SetNormal(-1, 0, 0) basePlane = vtk.vtkPlane() basePlane.SetOrigin(1.2, 0, 0) basePlane.SetNormal(1, 0, 0) iceCream = vtk.vtkSphere() iceCream.SetCenter(1.333, 0, 0) iceCream.SetRadius(0.5) bite = vtk.vtkSphere() bite.SetCenter(1.5, 0, 0.5) bite.SetRadius(0.25) # combine primitives to build ice-cream cone theCone = vtk.vtkImplicitBoolean() theCone.SetOperationTypeToIntersection() theCone.AddFunction(cone) theCone.AddFunction(vertPlane) theCone.AddFunction(basePlane) theCream = vtk.vtkImplicitBoolean()
def main():
colors = vtk.vtkNamedColors()
fileName = get_program_parameters()
# Read the image.
readerFactory = vtk.vtkImageReader2Factory()
reader = readerFactory.CreateImageReader2(fileName)
reader.SetFileName(fileName)
reader.Update()
cast = vtk.vtkImageCast()
cast.SetInputConnection(reader.GetOutputPort())
cast.SetOutputScalarTypeToDouble()
# Get rid of the discrete scalars.
smooth = vtk.vtkImageGaussianSmooth()
smooth.SetInputConnection(cast.GetOutputPort())
smooth.SetStandardDeviations(0.8, 0.8, 0)
m1 = vtk.vtkSphere()
m1.SetCenter(310, 130, 0)
m1.SetRadius(0)
m2 = vtk.vtkSampleFunction()
m2.SetImplicitFunction(m1)
m2.SetModelBounds(0, 264, 0, 264, 0, 1)
m2.SetSampleDimensions(264, 264, 1)
m3 = vtk.vtkImageShiftScale()
m3.SetInputConnection(m2.GetOutputPort())
m3.SetScale(0.000095)
div = vtk.vtkImageMathematics()
div.SetInputConnection(0, smooth.GetOutputPort())
div.SetInputConnection(1, m3.GetOutputPort())
div.SetOperationToMultiply()
# Create the actors.
colorWindow = 256.0
colorLevel = 127.5
originalActor = vtk.vtkImageActor()
originalActor.GetMapper().SetInputConnection(cast.GetOutputPort())
originalActor.GetProperty().SetColorWindow(colorWindow)
originalActor.GetProperty().SetColorLevel(colorLevel)
filteredActor = vtk.vtkImageActor()
filteredActor.GetMapper().SetInputConnection(div.GetOutputPort())
# Define the viewport ranges.
# (xmin, ymin, xmax, ymax)
originalViewport = [0.0, 0.0, 0.5, 1.0]
filteredViewport = [0.5, 0.0, 1.0, 1.0]
# Setup the renderers.
originalRenderer = vtk.vtkRenderer()
originalRenderer.SetViewport(originalViewport)
originalRenderer.AddActor(originalActor)
originalRenderer.ResetCamera()
originalRenderer.SetBackground(colors.GetColor3d("SlateGray"))
filteredRenderer = vtk.vtkRenderer()
filteredRenderer.SetViewport(filteredViewport)
filteredRenderer.AddActor(filteredActor)
filteredRenderer.ResetCamera()
filteredRenderer.SetBackground(colors.GetColor3d("LightSlateGray"))
renderWindow = vtk.vtkRenderWindow()
renderWindow.SetSize(600, 300)
renderWindow.AddRenderer(originalRenderer)
renderWindow.AddRenderer(filteredRenderer)
renderWindowInteractor = vtk.vtkRenderWindowInteractor()
style = vtk.vtkInteractorStyleImage()
renderWindowInteractor.SetInteractorStyle(style)
renderWindowInteractor.SetRenderWindow(renderWindow)
renderWindowInteractor.Initialize()
renderWindowInteractor.Start()
def _createImplicit(self, implicitType, implicitName, bounds, primaryInput):
if implicitType in self._implicitTypes and \
implicitName not in self._implicitsDict:
pi = primaryInput
rwi = self.slice3dVWR.threedFrame.threedRWI
implicitInfoBounds = None
if implicitType == "Plane":
implicitWidget = vtk.vtkImplicitPlaneWidget()
implicitWidget.SetPlaceFactor(1.25)
if pi != None:
implicitWidget.SetInput(pi)
implicitWidget.PlaceWidget()
b = pi.GetBounds()
implicitWidget.SetOrigin(b[0], b[2], b[4])
implicitInfoBounds = b
elif bounds != None:
implicitWidget.PlaceWidget(bounds)
implicitWidget.SetOrigin(bounds[0], bounds[2], bounds[4])
implicitInfoBounds = bounds
else:
# this can never happen
pass
implicitWidget.SetInteractor(rwi)
implicitWidget.On()
# create the implicit function
implicitFunction = vtk.vtkPlane()
# sync it to the initial widget
self._syncPlaneFunctionToWidget(implicitWidget)
# add it to the output
self.outputImplicitFunction.AddFunction(implicitFunction)
# now add an observer to the widget
def observerImplicitPlaneWidget(widget, eventName):
# sync it to the initial widget
ret = self._syncPlaneFunctionToWidget(widget)
# also select the correct grid row
if ret != None:
name, ii = ret
row = self.findGridRowByName(name)
if row >= 0:
self._grid.SelectRow(row)
oId = implicitWidget.AddObserver('EndInteractionEvent',
observerImplicitPlaneWidget)
elif implicitType == "Sphere":
implicitWidget = vtk.vtkSphereWidget()
implicitWidget.SetPlaceFactor(1.25)
implicitWidget.TranslationOn()
implicitWidget.ScaleOn()
#implicitWidget.HandleVisibilityOn()
if pi != None:
implicitWidget.SetInput(pi)
implicitWidget.PlaceWidget()
b = pi.GetBounds()
implicitInfoBounds = b
#implicitWidget.SetOrigin(b[0], b[2], b[4])
elif bounds != None:
implicitWidget.PlaceWidget(bounds)
implicitInfoBounds = bounds
#implicitWidget.SetOrigin(bounds[0], bounds[2], bounds[4])
else:
# this can never happen
pass
implicitWidget.SetInteractor(rwi)
implicitWidget.On()
# create the implicit function
implicitFunction = vtk.vtkSphere()
# sync it to the initial widget
self._syncSphereFunctionToWidget(implicitWidget)
# add it to the output
self.outputImplicitFunction.AddFunction(implicitFunction)
# now add an observer to the widget
def observerImplicitSphereWidget(widget, eventName):
# sync it to the initial widget
ret = self._syncSphereFunctionToWidget(widget)
# also select the correct grid row
if ret != None:
name, ii = ret
row = self.findGridRowByName(name)
if row >= 0:
self._grid.SelectRow(row)
oId = implicitWidget.AddObserver('EndInteractionEvent',
observerImplicitSphereWidget)
if implicitWidget:
# set the priority so it gets interaction before the
# ImagePlaneWidget. 3D widgets have default priority 0.5,
# so we assign our widgets just a tad higher. (voiwidget
# has 0.6 for example)
# NB: in a completely weird twist of events, only slices
# added AFTER this widget will act like they have lower
# priority. The initial slice still takes events from us!
implicitWidget.SetPriority(0.7)
# add to our internal thingy
ii = implicitInfo()
ii.name = implicitName
ii.type = implicitType
ii.widget = implicitWidget
ii.bounds = implicitInfoBounds
ii.oId = oId
ii.function = implicitFunction
self._implicitsDict[implicitName] = ii
# now add to the grid
nrGridRows = self._grid.GetNumberRows()
self._grid.AppendRows()
self._grid.SetCellValue(nrGridRows, self._gridNameCol,
implicitName)
self._grid.SetCellValue(nrGridRows, self._gridTypeCol,
implicitType)
# set the relevant cells up for Boolean
for col in [self._gridEnabledCol]:
self._grid.SetCellRenderer(nrGridRows, col,
wx.grid.GridCellBoolRenderer())
self._grid.SetCellAlignment(nrGridRows, col,
wx.ALIGN_CENTRE,
wx.ALIGN_CENTRE)
self._setImplicitEnabled(ii.name, True)
def getModelROIStencil(self):
import time
_t0 = time.time()
t1 = self.__Transform.GetInverse()
roi_type = self.getModelROIType()
roi_orientation = self.getModelROIOrientation()
# bounds, extent and center
b = self.getModelROIBounds()
# abort early if we haven't been fully set up yet
if b is None:
return None
# determine transformed boundary
_index = [[0, 2, 4], [0, 2, 5], [0, 3, 4], [0, 3, 5], [1, 2, 4], [1, 2, 5], [1, 3, 4], [1, 3, 5]]
b_t = [1e38, -1e38, 1e38, -1e38, 1e38, -1e38]
is_identity = True
# is transform identity?
is_identity = self.__Transform.GetMatrix().Determinant() == 1.0
# is_identity = False
for i in range(8):
i2 = _index[i]
pt = [b[i2[0]], b[i2[1]], b[i2[2]]]
_temp = self.__Transform.TransformPoint(pt[0], pt[1], pt[2])
b_t[0] = min(_temp[0], b_t[0])
b_t[1] = max(_temp[0], b_t[1])
b_t[2] = min(_temp[1], b_t[2])
b_t[3] = max(_temp[1], b_t[3])
b_t[4] = min(_temp[2], b_t[4])
b_t[5] = max(_temp[2], b_t[5])
e_t = self._BoundsToExtent(b_t)
# sanity check - check for inversion (caused by negative spacing)
e_t = list(e_t)
for i in range(3):
if e_t[i * 2] > e_t[i * 2 + 1]:
v = e_t[i * 2]
e_t[i * 2] = e_t[i * 2 + 1]
e_t[i * 2 + 1] = v
# expand stencil extent by one pixel on all sides
e_t = (e_t[0] - 1, e_t[1] + 1, e_t[2] - 1, e_t[3] + 1, e_t[4] - 1, e_t[5] + 1)
# make sure we're dealing with ints
e_t = map(int, e_t)
if is_identity:
# fast, but limited to canonical objects
self._StencilGenerator = vtk.vtkROIStencilSource()
else:
# slow, but more generic
self._StencilGenerator = vtk.vtkImplicitFunctionToImageStencil()
self._StencilGenerator.SetOutputOrigin(self.getImageOrigin())
self._StencilGenerator.SetOutputSpacing(self.getImageSpacing())
# set extent of stencil - taking into account transformation
self._StencilGenerator.SetOutputWholeExtent(e_t)
if is_identity:
# use DG's fast routines
if roi_type == "box":
self._StencilGenerator.SetShapeToBox()
elif roi_type == "cylinder":
if roi_orientation == "X":
self._StencilGenerator.SetShapeToCylinderX()
elif roi_orientation == "Y":
self._StencilGenerator.SetShapeToCylinderY()
elif roi_orientation == "Z":
self._StencilGenerator.SetShapeToCylinderZ()
elif roi_type == "ellipsoid":
self._StencilGenerator.SetShapeToEllipsoid()
self._StencilGenerator.SetBounds(b)
else:
# use JG's slow routines
if roi_type == "box":
obj = vtk.vtkBox()
obj.SetTransform(t1)
obj.SetBounds(b)
elif roi_type == "cylinder":
cyl = vtk.vtkCylinder()
cyl.SetRadius(1.0)
xc, yc, zc = (b[1] + b[0]) * 0.5, (b[3] + b[2]) * 0.5, (b[5] + b[4]) * 0.5
diam_a, diam_b, diam_c = (b[1] - b[0]), (b[3] - b[2]), (b[5] - b[4])
# The cylinder is infinite in extent, so needs to be cropped by using the intersection
# of three implicit functions -- the cylinder, and two cropping
# planes
obj = vtk.vtkImplicitBoolean()
obj.SetOperationTypeToIntersection()
obj.AddFunction(cyl)
clip1 = vtk.vtkPlane()
clip1.SetNormal(0, 1, 0)
obj.AddFunction(clip1)
clip2 = vtk.vtkPlane()
clip2.SetNormal(0, -1, 0)
obj.AddFunction(clip2)
t2 = vtk.vtkTransform()
t2.Translate(xc, yc, zc)
if roi_orientation == "X":
# cylinder is infinite in extent in the y-axis
t2.Scale(1, diam_b / 2.0, diam_c / 2.0)
t2.RotateZ(90)
r = diam_a / 2.0
elif roi_orientation == "Y":
# cylinder is infinite in extent in the y-axis
t2.Scale(diam_a / 2.0, 1, diam_c / 2.0)
r = diam_b / 2.0
elif roi_orientation == "Z":
# cylinder is infinite in extent in the y-axis
t2.Scale(diam_a / 2.0, diam_b / 2.0, 1)
t2.RotateX(90)
r = diam_c / 2.0
clip1.SetOrigin(0, r, 0)
clip2.SetOrigin(0, -r, 0)
# combine transforms
t2.SetInput(self.__Transform)
obj.SetTransform(t2.GetInverse())
elif roi_type == "ellipsoid":
obj = vtk.vtkSphere()
obj.SetRadius(1.0)
xc, yc, zc = (b[1] + b[0]) * 0.5, (b[3] + b[2]) * 0.5, (b[5] + b[4]) * 0.5
diam_a, diam_b, diam_c = (b[1] - b[0]), (b[3] - b[2]), (b[5] - b[4])
t2 = vtk.vtkTransform()
t2.Translate(xc, yc, zc)
t2.Scale(diam_a / 2.0, diam_b / 2.0, diam_c / 2.0)
# combine transforms
t2.SetInput(self.__Transform)
obj.SetTransform(t2.GetInverse())
self._StencilGenerator.SetInput(obj)
_t1 = time.time()
self._StencilGenerator.Update()
_t2 = time.time()
return self._StencilGenerator.GetOutput()
def main():
colors = vtk.vtkNamedColors()
# create a sphere
sphere = vtk.vtkSphere()
sphere.SetRadius(1)
sphere.SetCenter(1, 0, 0)
# create a box
box = vtk.vtkBox()
box.SetBounds(-1, 1, -1, 1, -1, 1)
# combine the two implicit functions
boolean = vtk.vtkImplicitBoolean()
boolean.SetOperationTypeToDifference()
# boolean.SetOperationTypeToUnion()
# boolean.SetOperationTypeToIntersection()
boolean.AddFunction(box)
boolean.AddFunction(sphere)
# The sample function generates a distance function from the implicit
# function. This is then contoured to get a polygonal surface.
sample = vtk.vtkSampleFunction()
sample.SetImplicitFunction(boolean)
sample.SetModelBounds(-1, 2, -1, 1, -1, 1)
sample.SetSampleDimensions(40, 40, 40)
sample.ComputeNormalsOff()
# contour
surface = vtk.vtkContourFilter()
surface.SetInputConnection(sample.GetOutputPort())
surface.SetValue(0, 0.0)
# mapper
mapper = vtk.vtkPolyDataMapper()
mapper.SetInputConnection(surface.GetOutputPort())
mapper.ScalarVisibilityOff()
actor = vtk.vtkActor()
actor.SetMapper(mapper)
actor.GetProperty().EdgeVisibilityOn()
actor.GetProperty().SetColor(colors.GetColor3d('AliceBlue'))
actor.GetProperty().SetEdgeColor(colors.GetColor3d('SteelBlue'))
# A renderer and render window
renderer = vtk.vtkRenderer()
renderer.SetBackground(colors.GetColor3d('Silver'))
# add the actor
renderer.AddActor(actor)
# render window
renwin = vtk.vtkRenderWindow()
renwin.AddRenderer(renderer)
# An interactor
interactor = vtk.vtkRenderWindowInteractor()
interactor.SetRenderWindow(renwin)
# Start
interactor.Initialize()
renwin.Render()
# renderer.GetActiveCamera().AddObserver('ModifiedEvent', CameraModifiedCallback)
renderer.GetActiveCamera().SetPosition(5.0, -4.0, 1.6)
renderer.GetActiveCamera().SetViewUp(0.1, 0.5, 0.9)
renderer.GetActiveCamera().SetDistance(6.7)
renwin.Render()
interactor.Start()
#!/usr/bin/env python import vtk from vtk.test import Testing from vtk.util.misc import vtkGetDataRoot VTK_DATA_ROOT = vtkGetDataRoot() # This example demonstrates adding two implicit models # to produce an (unexpected!) result # first we load in the standard vtk packages into tcl geomObject1 = vtk.vtkCone() geomObject2 = vtk.vtkSphere() geomObject2.SetRadius(0.5) geomObject2.SetCenter(0.5, 0, 0) sum = vtk.vtkImplicitSum() sum.SetNormalizeByWeight(1) sum.AddFunction(geomObject1, 2) sum.AddFunction(geomObject2, 1) sample = vtk.vtkSampleFunction() sample.SetImplicitFunction(sum) sample.SetSampleDimensions(60, 60, 60) sample.ComputeNormalsOn() surface = vtk.vtkContourFilter() surface.SetInputConnection(sample.GetOutputPort()) surface.SetValue(0, 0.0) mapper = vtk.vtkPolyDataMapper() mapper.SetInputConnection(surface.GetOutputPort()) mapper.ScalarVisibilityOff() actor = vtk.vtkActor() actor.SetMapper(mapper) actor.GetProperty().SetDiffuseColor(0.2, 0.4, 0.6) actor.GetProperty().SetSpecular(0.4)
g3Mapper.SetScalarRange(output.GetScalarRange()) g3Actor = vtk.vtkActor() g3Actor.SetMapper(g3Mapper) g3Actor.AddPosition(0,0,15) gf4 = vtk.vtkDataSetSurfaceFilter() gf4.SetInputConnection(gf2.GetOutputPort()) gf4.UseStripsOn() g4Mapper = vtk.vtkPolyDataMapper() g4Mapper.SetInputConnection(gf4.GetOutputPort()) g4Mapper.SetScalarRange(output.GetScalarRange()) g4Actor = vtk.vtkActor() g4Actor.SetMapper(g4Mapper) g4Actor.AddPosition(0,15,15) # create pipeline - unstructured grid # s = vtk.vtkSphere() s.SetCenter(output.GetCenter()) s.SetRadius(100.0) #everything eg = vtk.vtkExtractGeometry() eg.SetInputData(output) eg.SetImplicitFunction(s) gf5 = vtk.vtkDataSetSurfaceFilter() gf5.SetInputConnection(eg.GetOutputPort()) g5Mapper = vtk.vtkPolyDataMapper() g5Mapper.SetInputConnection(gf5.GetOutputPort()) g5Mapper.SetScalarRange(output.GetScalarRange()) g5Actor = vtk.vtkActor() g5Actor.SetMapper(g5Mapper) g5Actor.AddPosition(0,0,30) gf6 = vtk.vtkDataSetSurfaceFilter()
def Execute(self):
if self.Surface == None:
self.PrintError('Error: no Surface.')
self.Clipper = vtk.vtkClipPolyData()
self.Clipper.SetInput(self.Surface)
self.Clipper.GenerateClippedOutputOn()
self.Clipper.SetInsideOut(self.InsideOut)
if self.Interactive:
if self.WidgetType == "box":
self.ClipFunction = vtk.vtkPlanes()
elif self.WidgetType == "sphere":
self.ClipFunction = vtk.vtkSphere()
self.Clipper.SetClipFunction(self.ClipFunction)
self.Cutter = vtk.vtkCutter()
self.Cutter.SetInput(self.Surface)
self.Cutter.SetCutFunction(self.ClipFunction)
self.ClippedSurface = vtk.vtkPolyData()
self.CutLines = vtk.vtkPolyData()
if not self.vmtkRenderer:
self.vmtkRenderer = vmtkrenderer.vmtkRenderer()
self.vmtkRenderer.Initialize()
self.OwnRenderer = 1
self.vmtkRenderer.RegisterScript(self)
mapper = vtk.vtkPolyDataMapper()
mapper.SetInput(self.Surface)
mapper.ScalarVisibilityOff()
self.Actor = vtk.vtkActor()
self.Actor.SetMapper(mapper)
self.vmtkRenderer.Renderer.AddActor(self.Actor)
if self.WidgetType == "box":
self.ClipWidget = vtk.vtkBoxWidget()
self.ClipWidget.GetFaceProperty().SetColor(0.6,0.6,0.2)
self.ClipWidget.GetFaceProperty().SetOpacity(0.25)
elif self.WidgetType == "sphere":
self.ClipWidget = vtk.vtkSphereWidget()
self.ClipWidget.GetSphereProperty().SetColor(0.6,0.6,0.2)
self.ClipWidget.GetSphereProperty().SetOpacity(0.25)
self.ClipWidget.GetSelectedSphereProperty().SetColor(0.6,0.0,0.0)
self.ClipWidget.GetSelectedSphereProperty().SetOpacity(0.75)
self.ClipWidget.SetRepresentationToSurface()
self.ClipWidget.SetPhiResolution(20)
self.ClipWidget.SetThetaResolution(20)
self.ClipWidget.SetInteractor(self.vmtkRenderer.RenderWindowInteractor)
self.vmtkRenderer.AddKeyBinding('space','Clip.',self.ClipCallback)
self.vmtkRenderer.AddKeyBinding('i','Interact.',self.InteractCallback)
self.Display()
self.Transform = vtk.vtkTransform()
self.ClipWidget.GetTransform(self.Transform)
if self.OwnRenderer:
self.vmtkRenderer.Deallocate()
else:
self.Surface.GetPointData().SetActiveScalars(self.ClipArrayName)
self.Clipper.GenerateClipScalarsOff()
self.Clipper.SetValue(self.ClipValue)
self.Clipper.Update()
self.Cutter = vtk.vtkContourFilter()
self.Cutter.SetInput(self.Surface)
self.Cutter.SetValue(0,self.ClipValue)
self.Cutter.Update()
self.Surface = self.Clipper.GetOutput()
self.ClippedSurface = self.Clipper.GetClippedOutput()
self.CutLines = self.Cutter.GetOutput()
if self.CleanOutput == 1:
cleaner = vtk.vtkCleanPolyData()
cleaner.SetInput(self.Surface)
cleaner.Update()
self.Surface = cleaner.GetOutput()
cleaner = vtk.vtkCleanPolyData()
cleaner.SetInput(self.ClippedSurface)
cleaner.Update()
self.ClippedSurface = cleaner.GetOutput()
cleaner = vtk.vtkCleanPolyData()
cleaner.SetInput(self.CutLines)
cleaner.Update()
stripper = vtk.vtkStripper()
stripper.SetInput(cleaner.GetOutput())
stripper.Update()
self.CutLines = stripper.GetOutput()
if self.Surface.GetSource():
self.Surface.GetSource().UnRegisterAllOutputs()
#!/usr/bin/env python import vtk from vtk.test import Testing from vtk.util.misc import vtkGetDataRoot VTK_DATA_ROOT = vtkGetDataRoot() # This example demonstrates adding two implicit models # to produce an (unexpected!) result # first we load in the standard vtk packages into tcl geomObject1 = vtk.vtkCone() geomObject2 = vtk.vtkSphere() geomObject2.SetRadius(0.5) geomObject2.SetCenter(0.5,0,0) sum = vtk.vtkImplicitSum() sum.SetNormalizeByWeight(1) sum.AddFunction(geomObject1,2) sum.AddFunction(geomObject2,1) sample = vtk.vtkSampleFunction() sample.SetImplicitFunction(sum) sample.SetSampleDimensions(60,60,60) sample.ComputeNormalsOn() surface = vtk.vtkContourFilter() surface.SetInputConnection(sample.GetOutputPort()) surface.SetValue(0,0.0) mapper = vtk.vtkPolyDataMapper() mapper.SetInputConnection(surface.GetOutputPort()) mapper.ScalarVisibilityOff() actor = vtk.vtkActor() actor.SetMapper(mapper) actor.GetProperty().SetDiffuseColor(0.2,0.4,0.6) actor.GetProperty().SetSpecular(0.4)
def SmoothClippedVoronoiDiagram(voronoi,centerlines):
numberOfPoints = voronoi.GetNumberOfPoints()
numberOfCenterlinesPoints = centerlines.GetNumberOfPoints()
maskArray = vtk.vtkIntArray()
maskArray.SetNumberOfComponents(1)
maskArray.SetNumberOfTuples(numberOfPoints)
maskArray.FillComponent(0,0)
for i in range(numberOfCenterlinesPoints):
localRadius = centerlines.GetPointData().GetArray(radiusArrayName).GetTuple1(i)
threshold = localRadius*(1.0 - smoothingFactor)
sphere = vtk.vtkSphere()
sphere.SetRadius(localRadius)
sphere.SetCenter(centerlines.GetPoint(i))
localMaskArray = vtk.vtkIntArray()
localMaskArray.SetNumberOfComponents(1)
localMaskArray.SetNumberOfTuples(numberOfPoints)
localMaskArray.FillComponent(0,0)
for j in range(numberOfPoints):
value = sphere.EvaluateFunction(voronoi.GetPoint(j))
if (value <= 0.0):
localMaskArray.SetTuple1(j,1)
for j in range(numberOfPoints):
value = localMaskArray.GetTuple1(j)
if (value==1):
r = voronoi.GetPointData().GetArray(radiusArrayName).GetTuple1(j)
if (r>threshold):
maskArray.SetTuple1(j,1)
finalNumberOfMaskedPoints = ComputeNumberOfMaskedPoints(maskArray)
print('from original number of points ', numberOfPoints,'to',finalNumberOfMaskedPoints)
smoothedDiagram = vtk.vtkPolyData()
points = vtk.vtkPoints()
cellArray = vtk.vtkCellArray()
radiusArray = vtk.vtkDoubleArray()
radiusArray.SetNumberOfComponents(1)
radiusArray.SetNumberOfTuples(finalNumberOfMaskedPoints)
radiusArray.FillComponent(0,0.0)
radiusArray.SetName(radiusArrayName)
count = 0
for i in range(numberOfPoints):
value = maskArray.GetTuple1(i)
if (value==1):
radius = voronoi.GetPointData().GetArray(radiusArrayName).GetTuple1(i)
points.InsertNextPoint(voronoi.GetPoint(i))
cellArray.InsertNextCell(1)
cellArray.InsertCellPoint(count)
radiusArray.SetTuple1(count,radius)
count +=1
smoothedDiagram.SetPoints(points)
smoothedDiagram.SetVerts(cellArray)
smoothedDiagram.GetPointData().AddArray(radiusArray)
return smoothedDiagram
def makeModels(self):
"""
make vtk model
"""
# Here we create two ellipsoidal implicit functions and boolean them
# together to form a "cross" shaped implicit function.
quadric = vtk.vtkQuadric()
quadric.SetCoefficients(.5, 1, .2, 0, .1, 0, 0, .2, 0, 0)
sample = vtk.vtkSampleFunction()
sample.SetSampleDimensions(50, 50, 50)
sample.SetImplicitFunction(quadric)
sample.ComputeNormalsOff()
trans = vtk.vtkTransform()
trans.Scale(1, .5, .333)
sphere = vtk.vtkSphere()
sphere.SetRadius(self.radius)
sphere.SetTransform(trans)
trans2 = vtk.vtkTransform()
trans2.Scale(.25, .5, 1.0)
sphere2 = vtk.vtkSphere()
sphere2.SetRadius(self.radius)
sphere2.SetTransform(trans2)
self.sphere_geom_1 = sphere
self.sphere_geom_2 = sphere2
union = vtk.vtkImplicitBoolean()
union.AddFunction(sphere)
union.AddFunction(sphere2)
union.SetOperationType(0)
# Here is where it gets interesting. The implicit function is used to
# extract those cells completely inside the function. They are then
# shrunk to helpr show what was extracted.
extract = vtk.vtkExtractGeometry()
extract.SetInputConnection(sample.GetOutputPort())
extract.SetImplicitFunction(union)
shrink = vtk.vtkShrinkFilter()
shrink.SetInputConnection(extract.GetOutputPort())
shrink.SetShrinkFactor(self.shrink_factor)
dataMapper = vtk.vtkDataSetMapper()
dataMapper.SetInputConnection(shrink.GetOutputPort())
self.shrink_geom = shrink
# data actor
self.data_actor = vtk.vtkActor()
self.data_actor.SetMapper(dataMapper)
# The outline gives context to the original data.
outline = vtk.vtkOutlineFilter()
outline.SetInputConnection(sample.GetOutputPort())
outlineMapper = vtk.vtkPolyDataMapper()
outlineMapper.SetInputConnection(outline.GetOutputPort())
# outline actor
self.outline_actor = vtk.vtkActor()
self.outline_actor.SetMapper(outlineMapper)
outlineProp = self.outline_actor.GetProperty()
outlineProp.SetColor(0, 0, 0)
# Parameters for debugging NPts = 1000000 math = vtk.vtkMath() math.RandomSeed(31415) # create pipeline # points = vtk.vtkBoundedPointSource() points.SetNumberOfPoints(NPts) points.ProduceRandomScalarsOn() points.ProduceCellOutputOff() points.Update() # Create a sphere implicit function sphere = vtk.vtkSphere() sphere.SetCenter(0.0, 0.1, 0.2) sphere.SetRadius(0.75) # Extract points within sphere extract = vtk.vtkFitImplicitFunction() extract.SetInputConnection(points.GetOutputPort()) extract.SetImplicitFunction(sphere) extract.SetThreshold(0.005) extract.GenerateVerticesOn() # Clip out some of the points with a plane; requires vertices plane = vtk.vtkPlane() plane.SetOrigin(sphere.GetCenter()) plane.SetNormal(1, 1, 1)
ren1 = vtk.vtkRenderer() renWin = vtk.vtkRenderWindow() renWin.AddRenderer(ren1) iren = vtk.vtkRenderWindowInteractor() iren.SetRenderWindow(renWin) # create implicit function primitives cone = vtk.vtkCone() cone.SetAngle(20) vertPlane = vtk.vtkPlane() vertPlane.SetOrigin(.1,0,0) vertPlane.SetNormal(-1,0,0) basePlane = vtk.vtkPlane() basePlane.SetOrigin(1.2,0,0) basePlane.SetNormal(1,0,0) iceCream = vtk.vtkSphere() iceCream.SetCenter(1.333,0,0) iceCream.SetRadius(0.5) bite = vtk.vtkSphere() bite.SetCenter(1.5,0,0.5) bite.SetRadius(0.25) # combine primitives to build ice-cream cone theCone = vtk.vtkImplicitBoolean() theCone.SetOperationTypeToIntersection() theCone.AddFunction(cone) theCone.AddFunction(vertPlane) theCone.AddFunction(basePlane) theCream = vtk.vtkImplicitBoolean() theCream.SetOperationTypeToDifference() theCream.AddFunction(iceCream) theCream.AddFunction(bite)
g3Mapper.SetScalarRange(output.GetScalarRange()) g3Actor = vtk.vtkActor() g3Actor.SetMapper(g3Mapper) g3Actor.AddPosition(0,0,15) gf4 = vtk.vtkDataSetSurfaceFilter() gf4.SetInputConnection(gf2.GetOutputPort()) gf4.UseStripsOn() g4Mapper = vtk.vtkPolyDataMapper() g4Mapper.SetInputConnection(gf4.GetOutputPort()) g4Mapper.SetScalarRange(output.GetScalarRange()) g4Actor = vtk.vtkActor() g4Actor.SetMapper(g4Mapper) g4Actor.AddPosition(0,15,15) # create pipeline - unstructured grid # s = vtk.vtkSphere() s.SetCenter(output.GetCenter()) s.SetRadius(100.0) #everything eg = vtk.vtkExtractGeometry() eg.SetInputData(output) eg.SetImplicitFunction(s) gf5 = vtk.vtkDataSetSurfaceFilter() gf5.SetInputConnection(eg.GetOutputPort()) g5Mapper = vtk.vtkPolyDataMapper() g5Mapper.SetInputConnection(gf5.GetOutputPort()) g5Mapper.SetScalarRange(output.GetScalarRange()) g5Actor = vtk.vtkActor() g5Actor.SetMapper(g5Mapper) g5Actor.AddPosition(0,0,30) gf6 = vtk.vtkDataSetSurfaceFilter()
def gen_slice(args):
verbose = args.verbose
origin = args.origin
normal = args.normal
output_file = args.output_file[0]
input_file = args.input_file[0]
variable = args.variable[0]
on_sphere = args.sphere
sphere_radius = args.sphere_radius
depth = args.sphere_radius
xi = []
yi = []
zi = []
vtu_files = []
path = os.path.dirname(input_file)
if (not on_sphere):
if (normal == (0,0,1)):
index_1 = 0
index_2 = 1
x_axis = "X"
y_axis = "Y"
elif(normal == (0,1,0)):
index_1 = 0
index_2 = 2
x_axis = "X"
y_axis = "Depth"
elif(normal == (1,0,0)):
index_1 = 1
index_2 = 2
x_axis = "Y"
y_axis = "Depth"
else:
print "Normal should be one of (1,0,0), (0,1,0), or (0,0,1)"
sys.exit(-1)
# check origin
if (origin == None):
print "Origin should be a set of three corrdinate, eg. (0,0,-10)"
sys.exit(-1)
else:
import fluidity.spheretools as st
index_1 = 0
index_2 = 1
index_3 = 2
x_axis = "Longitude"
y_axis = "Latitude"
# get vtus from pvtu file. They are in lines such as:
# <Piece Source="restratA-np64-adapt-C_99/restratA-np64-adapt-C_99_0.vtu" />
# As PVTU is XML, parse as such and grab the Piece elements
xml_root = etree.parse(input_file,xml_parser)
find = etree.XPath("//Piece")
peices = find(xml_root)
for p in peices:
name = p.attrib['Source']
vtu_files.append(os.path.join(path,name))
if (on_sphere):
sphere = vtk.vtkSphere()
sphere.SetCenter(0,0,0)
sphere.SetRadius(sphere_radius-10)
else:
plane = vtk.vtkPlane()
plane.SetOrigin(origin[0], origin[1], origin[2])
plane.SetNormal(normal[0],normal[1],normal[2])
getMagnitude = False
component = -1
# Special cases of variables
if (variable == "VelocityMagnitude"):
getMagnitude = True
variable = "Velocity_projection"
if (variable == "VelocityU"):
getMagnitude = False
variable = "ProjectedVelocity"
component = 0
if (variable == "VelocityV"):
getMagnitude = False
variable = "ProjectedVelocity"
component = 1
if (variable == "BedShearStressMagnitude"):
getMagnitude = True
variable = "BedShearStress_projection"
if (variable == "MaxBedShearStressMagnitude"):
getMagnitude = True
variable = "MaxBedShearStress_projection"
if (variable == "AveBedShearStressMagnitude"):
getMagnitude = True
variable = "AveBedShearStress_projection"
if (variable == "MaxVelocityMagnitude"):
getMagnitude = True
variable = "MaxVelocity_projection"
if (variable == "AveVelocityMagnitude"):
getMagnitude = True
variable = "AveVelocity_projection"
if (variable == "AveVelocityU"):
getMagnitude = False
component = 0
variable = "AveVelocity_projection"
if (variable == "AveVelocityV"):
getMagnitude = False
component = 1
variable = "AveVelocity_projection"
if (variable == "MaxVelocityU"):
getMagnitude = False
component = 0
variable = "MaxVelocity_projection"
if (variable == "MaxVelocityV"):
getMagnitude = False
component = 1
variable = "MaxVelocity_projection"
if (variable == "AveBedShearStressU"):
getMagnitude = False
component = 0
variable = "AveBedShearStress_projection"
if (variable == "AveBedShearStressV"):
getMagnitude = False
component = 1
variable = "AveBedShearStress_projection"
if (variable == "MaxBedShearStressU"):
getMagnitude = False
component = 0
variable = "MaxBedShearStress_projection"
if (variable == "MaxBedShearStressV"):
getMagnitude = False
component = 1
variable = "MaxBedShearStress_projection"
comp_1 = []
comp_2 = []
comp_3 = []
# the above are for later...numpy.array[[list],[list]] is sllloooowww
#for each vtu, grab any slice data
i = 0
for v in vtu_files:
if (verbose):
print v
# grab the number
num = i
# Start by loading some data.
reader=vtk.vtkXMLUnstructuredGridReader()
reader.SetFileName(v)
reader.Update()
grid=reader.GetOutput()
grid.GetPointData().SetActiveScalars(variable)
cut = vtk.vtkCutter()
if (on_sphere):
cut.SetCutFunction(sphere)
else:
cut.SetCutFunction(plane)
cut.SetInputConnection(reader.GetOutputPort())
cut.Update()
i = i+1
d = cut.GetOutput().GetPointData().GetScalars()
d.GetNumberOfTuples()
slice_data = np.array([d.GetTuple(i) for i in range(d.GetNumberOfTuples())])
c = cut.GetOutput()
coords = []
for i in range(0,c.GetNumberOfPoints()):
coords.append(c.GetPoint(i))
coords = np.array(coords)
if (len(slice_data) > 0):
n_comps = len(slice_data[0])
if (on_sphere):
if (n_comps == 3):
# project vectors and coords
for i in range(0,len(coords[:,0])):
#print coords[i,0],coords[i,1],coords[i,2]
#print slice_data[i,0],slice_data[i,1],slice_data[i,2]
[[radial, polar, azimuthal],[lat,lon]] = \
sp.vector_cartesian_2_spherical_polar(slice_data[i,0],slice_data[i,1],slice_data[i,2],
coords[i,0],coords[i,1],coords[i,2])
xi.append(math.degrees(lon))
yi.append(math.degrees(lat))
slice_data[i,0] = radial
slice_data[i,1] = polar
slice_data[i,2] = azimuthal
elif (n_comps == 1):
#project points only
for i in range(0,len(coords[:,0])):
lat,lon = st.cart2polar(coords[i,:])
xi.append(math.degrees(lon))
yi.append(math.degrees(lat))
else:
print("Unknown number of componenets - not a 3D vector or scalar")
sys.exit(-1)
else:
xi.extend(coords[:,index_1])
yi.extend(coords[:,index_2])
if (getMagnitude):
# How to calculate the magnitude nicely..? Below seems rather brute force.
mag = []
mag = slice_data[:,0]
for j in range(0,len(mag)):
mag[j] = mag[j]*mag[j]
for i in range(1,n_comps):
for j in range(0,len(mag)):
mag[j] = mag[j] + slice_data[j,i]*slice_data[j,i]
for j in range(0,len(mag)):
mag[j] =math.sqrt(mag[j])
zi.extend(mag)
elif (component > -1):
zi.extend(slice_data[:,component])
else:
if (n_comps == 3):
comp_1.extend(slice_data[:,0])
comp_2.extend(slice_data[:,1])
comp_3.extend(slice_data[:,2])
else:
zi.extend(slice_data[:,0])
# THe data contain > 1 components, but we only want one
if (component > -1 or getMagnitude) :
n_comps = 1
#if (component == 1):
# zi = comp_1
#elif (component == 2):
# zi = comp_2
#elif (component == 3):
# zi = comp_3
#else:
# print "Error - you seem to be generating 4D data!"
# sys.exit(-1)
coords = []
# need to tidy up these arrays - lot's duplicate points from halos, DG, or whatever
if (n_comps == 3):
for i in range(len(xi)):
coords.append([xi[i],yi[i],comp_1[i],comp_2[i],comp_3[i]])
elif (n_comps == 1):
for i in range(len(xi)):
coords.append([xi[i],yi[i],zi[i]])
else:
print "Error. I expect 1 or 3 components"
sys.exit(-1)
if (verbose):
print "Removing duplicated points"
coords_checked = unique(coords)
if (verbose):
print "Saving file"
xi = []
yi = []
zi = []
for c in coords_checked:
xi.append(c[0])
yi.append(c[1])
if (n_comps == 3):
zi.append([c[2], c[3], c[4]])
else:
zi.append(c[2])
i += 1
# Store data as a pickle
data = [xi,yi,zi]
# Add axes labels
axes_info = [index_1,index_2,x_axis,y_axis]
data.append(axes_info)
pickle.dump( data, open( output_file, "wb" ) )
math.Random(.2, 1), 1)
i += 1
lut = vtk.vtkLookupTable()
MakeColors(lut, 256)
n = 20
radius = 10
# This has been moved outside the loop so that the code can be correctly
# translated to python
blobImage = vtk.vtkImageData()
i = 0
while i < n:
sphere = vtk.vtkSphere()
sphere.SetRadius(radius)
max = 50 - radius
sphere.SetCenter(int(math.Random(-max, max)), int(math.Random(-max, max)),
int(math.Random(-max, max)))
sampler = vtk.vtkSampleFunction()
sampler.SetImplicitFunction(sphere)
sampler.SetOutputScalarTypeToFloat()
sampler.SetSampleDimensions(51, 51, 51)
sampler.SetModelBounds(-50, 50, -50, 50, -50, 50)
thres = vtk.vtkImageThreshold()
thres.SetInputConnection(sampler.GetOutputPort())
thres.ThresholdByLower(radius * radius)
thres.ReplaceInOn()
res = 50 # Create the RenderWindow, Renderers and both Actors ren0 = vtk.vtkRenderer() ren1 = vtk.vtkRenderer() ren2 = vtk.vtkRenderer() renWin = vtk.vtkRenderWindow() renWin.SetMultiSamples(0) renWin.AddRenderer(ren0) renWin.AddRenderer(ren1) renWin.AddRenderer(ren2) iren = vtk.vtkRenderWindowInteractor() iren.SetRenderWindow(renWin) # Create a synthetic source: sample a sphere across a volume sphere = vtk.vtkSphere() sphere.SetCenter( 0.0,0.0,0.0) sphere.SetRadius(0.25) sample = vtk.vtkSampleFunction() sample.SetImplicitFunction(sphere) sample.SetModelBounds(-0.5,0.5, -0.5,0.5, -0.5,0.5) sample.SetSampleDimensions(res,res,res) sample.Update() # Adds random attributes random = vtk.vtkRandomAttributeGenerator() random.SetGenerateCellScalars(True) random.SetInputConnection(sample.GetOutputPort()) # Convert the image data to unstructured grid
# res = 200 # Create the RenderWindow, Renderers and both Actors ren0 = vtk.vtkRenderer() ren1 = vtk.vtkRenderer() ren2 = vtk.vtkRenderer() renWin = vtk.vtkRenderWindow() renWin.SetMultiSamples(0) renWin.AddRenderer(ren0) renWin.AddRenderer(ren1) renWin.AddRenderer(ren2) iren = vtk.vtkRenderWindowInteractor() iren.SetRenderWindow(renWin) # Create a synthetic source: sample a sphere across a volume sphere = vtk.vtkSphere() sphere.SetCenter(0.0, 0.0, 0.0) sphere.SetRadius(0.25) sample = vtk.vtkSampleFunction() sample.SetImplicitFunction(sphere) sample.SetModelBounds(-0.5, 0.5, -0.5, 0.5, -0.5, 0.5) sample.SetSampleDimensions(res, res, res) sample.Update() # Adds random attributes random = vtk.vtkRandomAttributeGenerator() random.SetGenerateCellScalars(True) random.SetInputConnection(sample.GetOutputPort()) # Convert the image data to unstructured grid
sTube = positions[0]
sTubeX = sTube[:,0]
sTubeY = sTube[:,1]
sTubeZ = sTube[:,2]
tPairs = []
for i in range(1,np.shape(positions[0])[0]):
tPairs.append((i-1,i))
spheres = [None]*np.size(sTubeX)
sphereActs = [None]*np.size(sTubeX)
for i in range(len(spheres)):
spheres[i] = vtk.vtkSphere()
spheres[i].SetCenter(sTubeX[i], sTubeY[i], sTubeZ[i])
spheres[i].SetRadius(scalars[0])
cyls = [None]*len(tPairs)
for c in range(len(cyls)):
icyl = vtk.vtkCylinder()
p1 = vtk.vtkPlane()
p1.SetOrigin(sTubeX[tPairs[c][0]],sTubeY[tPairs[c][0]],sTubeZ[tPairs[c][0]])
p1.SetNormal(sTubeX[tPairs[c][1]] - sTubeX[tPairs[c][0]],sTubeY[tPairs[c][1]] - sTubeY[tPairs[c][0]],sTubeZ[tPairs[c][1]] - sTubeZ[tPairs[c][0]])
p2 = vtk.vtkPlane()
p2.SetOrigin(sTubeX[tPairs[c][1]],sTubeY[tPairs[c][1]],sTubeZ[tPairs[c][1]])
p2.SetNormal(sTubeX[tPairs[c][0]] - sTubeX[tPairs[c][1]],sTubeY[tPairs[c][0]] - sTubeY[tPairs[c][1]],sTubeZ[tPairs[c][0]] - sTubeZ[tPairs[c][1]])
ccyl = vtk.vtkImplicitBoolean()
ccyl.SetOperationTypeToIntersection()
