[vtkusers] Filling contour with edge visibility on

[Bill Lorensen]

What do you want? A filled contour? Or a boundary of the contour? Or both?

All are possible with the pipelines you have.

Please study and experiment on your own for a while.

On Sat, Jun 5, 2010 at 2:28 PM, Jothy <jothybasu at gmail.com> wrote:
> But I should see it as a filled contour.
>
> On Sat, Jun 5, 2010 at 6:48 PM, Bill Lorensen <bill.lorensen at gmail.com>
> wrote:
>>
>> That is exactly what it should show. I guess I am misunderstanding your
>> problem
>>
>> On Sat, Jun 5, 2010 at 1:40 PM, Jothy <jothybasu at gmail.com> wrote:
>> > Sorry,
>> >
>> > I meant , I don't understand the featureEdges behaviour.
>> >
>> > On Sat, Jun 5, 2010 at 6:39 PM, Jothy <jothybasu at gmail.com> wrote:
>> >>
>> >> 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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