[vtkusers] Filling contour with edge visibility on

[Bill Lorensen]

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
>> >> >> >
>> >> >> > _______________________________________________
>> >> >> > Powered by www.kitware.com
>> >> >> >
>> >> >> > Visit other Kitware open-source projects at
>> >> >> > http://www.kitware.com/opensource/opensource.html
>> >> >> >
>> >> >> > Please keep messages on-topic and check the VTK FAQ at:
>> >> >> > http://www.vtk.org/Wiki/VTK_FAQ
>> >> >> >
>> >> >> > Follow this link to subscribe/unsubscribe:
>> >> >> > http://www.vtk.org/mailman/listinfo/vtkusers
>> >> >> >
>> >> >> >
>> >> >
>> >> >
>> >
>> >
>
>