[vtkusers] Uneven colors after the vtkButterflySubdivisionFilter

[Bill Lorensen]

This better. Just to be sure, I assume this code also produces bad results?



On Sat, Apr 20, 2013 at 1:39 PM, DivyaS <div.anand141 at gmail.com> wrote:

> Sure, please check this code - I have removed all the unnecessary code. I
> have added comments for each of the steps.
>
>             //Defining a cylinder source.
>             vtkCylinderSource cylinderSource = vtkCylinderSource.New();
>             cylinderSource.Update();
>
>             vtkTriangleFilter triangles = vtkTriangleFilter.New();
>             triangles.SetInput(cylinderSource.GetOutput());
>             triangles.Update();
>             vtkPolyData originalMesh;
>             originalMesh = triangles.GetOutput();
>
>             vtkUnsignedCharArray colors = vtkUnsignedCharArray.New();
>             colors.SetNumberOfComponents(3);
>             colors.SetNumberOfTuples(originalMesh.GetNumberOfPolys());
>             colors.SetName("Colors");
>
>             //Creating an array to store the values according to which the
> colors are selected.
>             //Values are inserted for each of the points in the polydata
>             int[] colorAT = new int[originalMesh.GetNumberOfPolys()];
>             for (int i = 0; i < originalMesh.GetNumberOfPolys(); i++)
>             {
>                 colorAT[i] = i;
>             }
>
>             int activationTime;
>             //Loop to select colors for each of the points in the polydata.
>             for (int i = 0; i < originalMesh.GetNumberOfPolys(); i++)
>             {
>                 activationTime = colorAT[i];
>                 if (activationTime > 0 && activationTime < 5)
>                 {
>                     //Black
>                     colors.InsertTuple3(i, 255, 255, 0);
>                 }
>                 else if (activationTime > 4 && activationTime < 10)
>                 {
>                     //Blue
>                     colors.InsertTuple3(i, 0, 0, 255);
>                 }
>                 else if (activationTime > 9 && activationTime < 300)
>                 {
>                     //Red
>                     colors.InsertTuple3(i, 255, 0, 0);
>                 }
>             }
>             originalMesh.GetPointData().SetScalars(colors);
>
>             //Subdivision.
>             int numberOfSubdivisions = 4;
>             vtkPolyDataAlgorithm subdivisionFilter =
> vtkButterflySubdivisionFilter.New();
>
>
> ((vtkButterflySubdivisionFilter)subdivisionFilter).SetNumberOfSubdivisions(numberOfSubdivisions);
>             subdivisionFilter.SetInput(originalMesh);
>             subdivisionFilter.Update();
>
>             vtkRenderWindow renderWindow =
> renderWindowControl1.RenderWindow;
>             vtkRenderer renderer = vtkRenderer.New();
>
>             //Create a mapper and actor
>             vtkPolyDataMapper mapper = vtkPolyDataMapper.New();
>             mapper.SetInputConnection(subdivisionFilter.GetOutputPort());
>             vtkActor actor = vtkActor.New();
>             actor.SetMapper(mapper);
>
>             renderer.AddActor(actor);
>             renderer.SetBackground(0, 0, 0);
>             renderer.ResetCamera();
>             renderWindow.AddRenderer(renderer);
>             renderWindow.Render();
>
>
>
> --
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> Sent from the VTK - Users mailing list archive at Nabble.com.
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-- 
Unpaid intern in BillsBasement at noware dot com
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