[vtkusers] Filling contour with edge visibility on

Sat Jun 5 13:39:00 EDT 2010

No Bill, this shows only the edge (outline) in surface and wireframe mode

I really understand the behaviour of fretureEdges.

see the attached screenshot.

Thanks,

Jothy

On Sat, Jun 5, 2010 at 6:25 PM, Bill Lorensen <bill.lorensen at gmail.com>wrote:

> If this does not work, I'll convert python to C++ (I am not a python
> guy). Maybe in the next day or so.
>
> On Sat, Jun 5, 2010 at 1:24 PM, Bill Lorensen <bill.lorensen at gmail.com>
> wrote:
> > Try
> > cutter->Stripper->cutPoly->TriangleFilter->FeatureEdges->Mapper
> >
> > On Sat, Jun 5, 2010 at 1:13 PM, Jothy <jothybasu at gmail.com> wrote:
> >> Here is the code
> >>
> >> # A simple script to demonstrate the vtkCutter function
> >> import vtk
> >>
> >>
> >> #Create a cube
> >> cube=vtk.vtkSphereSource()
> >> cube.SetRadius(50)
> >> cube.SetThetaResolution(100)
> >> cube.SetPhiResolution(100)
> >> cubeMapper=vtk.vtkPolyDataMapper()
> >> cubeMapper.SetInputConnection(cube.GetOutputPort())
> >>
> >> #create a plane to cut,here it cuts in the XZ direction (xz
> >> normal=(1,0,0);XY =(0,0,1),YZ =(0,1,0)
> >> plane=vtk.vtkPlane()
> >> plane.SetOrigin(20,0,0)
> >> plane.SetNormal(1,0,0)
> >>
> >> #create cutter
> >> cutter=vtk.vtkCutter()
> >> cutter.SetCutFunction(plane)
> >> cutter.SetInput(cubeMapper.GetInput())
> >> cutter.Update()
> >>
> >> FeatureEdges=vtk.vtkFeatureEdges()
> >> FeatureEdges.SetInputConnection(cutter.GetOutputPort())
> >> FeatureEdges.BoundaryEdgesOn()
> >> FeatureEdges.FeatureEdgesOff()
> >> FeatureEdges.NonManifoldEdgesOff()
> >> FeatureEdges.ManifoldEdgesOff()
> >> FeatureEdges.Update()
> >>
> >> cutStrips=vtk.vtkStripper() ; #Forms loops (closed polylines) from
> cutter
> >> cutStrips.SetInputConnection(cutter.GetOutputPort())
> >> cutStrips.Update()
> >> cutPoly=vtk.vtkPolyData() ; #This trick defines polygons as polyline
> loop
> >> cutPoly.SetPoints((cutStrips.GetOutput()).GetPoints())
> >> cutPoly.SetPolys((cutStrips.GetOutput()).GetLines())
> >>
> >>
> >> cutMapper=vtk.vtkPolyDataMapper()
> >> #cutMapper.SetInput(FeatureEdges.GetOutput())
> >> cutMapper.SetInput(cutPoly)
> >> cutActor=vtk.vtkActor()
> >> cutActor.GetProperty().SetColor(1,1,0)
> >> cutActor.GetProperty().SetEdgeColor(0,1,0)
> >> cutActor.GetProperty().SetLineWidth(2)
> >> cutActor.GetProperty().EdgeVisibilityOn()
> >> ##cutActor.GetProperty().SetOpacity(0.7)
> >> cutActor.SetMapper(cutMapper)
> >>
> >>
> >> #create renderers and add actors of plane and cube
> >> ren = vtk.vtkRenderer()
> >> ren.AddActor(cutActor)
> >>
> >>
> >> #Add renderer to renderwindow and render
> >> renWin = vtk.vtkRenderWindow()
> >> renWin.AddRenderer(ren)
> >> renWin.SetSize(600, 600)
> >> iren = vtk.vtkRenderWindowInteractor()
> >> iren.SetRenderWindow(renWin)
> >> ren.SetBackground(0,0,0)
> >> renWin.Render()
> >>
> >> What's the problem then?
> >>
> >> Thank you,
> >>
> >> Jothy
> >>
> >> On Sat, Jun 5, 2010 at 6:10 PM, Bill Lorensen <bill.lorensen at gmail.com>
> >> wrote:
> >>>
> >>> No, it should not modify its input.
> >>>
> >>> On Sat, Jun 5, 2010 at 12:34 PM, Jothy <jothybasu at gmail.com> wrote:
> >>> > Got it Bill!
> >>> >
> >>> > There is a trick
> >>> >
> >>> > pipeline is as I uesd before from capCow.tcl but introducin
> >>> > vtkfeatureEdges
> >>> > after vtkCutter and setting the stripper input from cutter not from
> >>> > featureEdges.
> >>> >
> >>> > I am bit confused, does this featureedges modifies the cutter output
> >>> >  and makes this modified outpur available to cutter->GetOutput()
> >>> >
> >>> > Seems to be  special type of operation ( or is it a bug!).
> >>> >
> >>> > Here is the screenshot
> >>> >
> >>> > I will add an example to wiki.
> >>> >
> >>> >
> >>> > Thanks,
> >>> >
> >>> >
> >>> > On Sat, Jun 5, 2010 at 5:03 PM, Bill Lorensen <
> bill.lorensen at gmail.com>
> >>> > wrote:
> >>> >>
> >>> >> Can you post an image of what you get?
> >>> >>
> >>> >> On Sat, Jun 5, 2010 at 11:34 AM, Jothy <jothybasu at gmail.com> wrote:
> >>> >> > Here is it!
> >>> >> >
> >>> >> > # A simple script to demonstrate the vtkCutter function
> >>> >> > import vtk
> >>> >> >
> >>> >> >
> >>> >> > #Create a cube
> >>> >> > cube=vtk.vtkSphereSource()
> >>> >> > cube.SetRadius(50)
> >>> >> > cube.SetThetaResolution(200)
> >>> >> > cube.SetPhiResolution(200)
> >>> >> > cubeMapper=vtk.vtkPolyDataMapper()
> >>> >> > cubeMapper.SetInputConnection(cube.GetOutputPort())
> >>> >> >
> >>> >> > #create a plane to cut,here it cuts in the XZ direction (xz
> >>> >> > normal=(1,0,0);XY =(0,0,1),YZ =(0,1,0)
> >>> >> > plane=vtk.vtkPlane()
> >>> >> > plane.SetOrigin(10,0,0)
> >>> >> > plane.SetNormal(1,0,0)
> >>> >> >
> >>> >> > #create cutter
> >>> >> > cutter=vtk.vtkCutter()
> >>> >> > cutter.SetCutFunction(plane)
> >>> >> > cutter.SetInput(cubeMapper.GetInput())
> >>> >> > cutter.Update()
> >>> >> >
> >>> >> > FeatureEdges=vtk.vtkFeatureEdges()
> >>> >> > FeatureEdges.SetInputConnection(cutter.GetOutputPort())
> >>> >> > FeatureEdges.BoundaryEdgesOn()
> >>> >> > FeatureEdges.FeatureEdgesOff()
> >>> >> > FeatureEdges.NonManifoldEdgesOff()
> >>> >> > FeatureEdges.ManifoldEdgesOff()
> >>> >> > FeatureEdges.Update()
> >>> >> >
> >>> >> >
> >>> >> >
> >>> >> >
> >>> >> > cutMapper=vtk.vtkPolyDataMapper()
> >>> >> > cutMapper.SetInput(FeatureEdges.GetOutput())
> >>> >> > cutActor=vtk.vtkActor()
> >>> >> > cutActor.GetProperty().SetColor(1,1,0)
> >>> >> > cutActor.GetProperty().SetEdgeColor(1,0.5,0)
> >>> >> > cutActor.GetProperty().SetLineWidth(2)
> >>> >> > cutActor.GetProperty().EdgeVisibilityOn()
> >>> >> > cutActor.GetProperty().SetOpacity(0.7)
> >>> >> > cutActor.SetMapper(cutMapper)
> >>> >> >
> >>> >> >
> >>> >> > #create renderers and add actors of plane and cube
> >>> >> > ren = vtk.vtkRenderer()
> >>> >> > ren.AddActor(cutActor)
> >>> >> >
> >>> >> >
> >>> >> > #Add renderer to renderwindow and render
> >>> >> > renWin = vtk.vtkRenderWindow()
> >>> >> > renWin.AddRenderer(ren)
> >>> >> > renWin.SetSize(600, 600)
> >>> >> > iren = vtk.vtkRenderWindowInteractor()
> >>> >> > iren.SetRenderWindow(renWin)
> >>> >> > ren.SetBackground(0,0,0)
> >>> >> > renWin.Render()
> >>> >> >
> >>> >> > On Fri, Jun 4, 2010 at 10:07 PM, Bill Lorensen
> >>> >> > <bill.lorensen at gmail.com>
> >>> >> > wrote:
> >>> >> >>
> >>> >> >> From the output of vtkCutter, insert vtkFeatureEdges with
> >>> >> >> BoundaryEdgesOn()
> >>> >> >> FeatureEdgesOff()
> >>> >> >> NonManifoldEdgesOff()
> >>> >> >> ManifoldEdgesOff()
> >>> >> >>
> >>> >> >>
> >>> >> >>
> >>> >> >> On Fri, Jun 4, 2010 at 4:16 PM, Jothy <jothybasu at gmail.com>
> wrote:
> >>> >> >> > Hi all,
> >>> >> >> >
> >>> >> >> > With the help of CapCow.tcl example I am able to fill the
> contour
> >>> >> >> > I
> >>> >> >> > got
> >>> >> >> > from
> >>> >> >> > vtkCutter. But, the problem is I am the edge to be visible, so
> I
> >>> >> >> > set
> >>> >> >> > edge
> >>> >> >> > visibility on, it makes all the triangle edges on. I want only
> the
> >>> >> >> > outline
> >>> >> >> > on.
> >>> >> >> >
> >>> >> >> > Any suggestions?
> >>> >> >> >
> >>> >> >> > Thanks,
> >>> >> >> >
> >>> >> >> > Jothy
> >>> >> >> >
> >>> >> >> > _______________________________________________
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> >>> >> >> >
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> >>> >> >> >
> >>> >> >> > Please keep messages on-topic and check the VTK FAQ at:
> >>> >> >> > http://www.vtk.org/Wiki/VTK_FAQ
> >>> >> >> >
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> >>> >> >> > http://www.vtk.org/mailman/listinfo/vtkusers
> >>> >> >> >
> >>> >> >> >
> >>> >> >
> >>> >> >
> >>> >
> >>> >
> >>
> >>
> >
>
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