[vtk-developers] VTK 7.1 issue with vtkPoints while rendering

[Ken Martin]

Looks fine to me except that you can yank the vertexglyph as it is not
doing anything for you. The polydata can go directly into the mapper.
Maybe your points have a really large values and you are running into
floating point issues. Look at the bounds on your points.  Could be
something else but the basic code looks OK to me.

On Tue, Mar 14, 2017 at 9:11 AM, afnanahmad <afnanahmad at live.com> wrote:

> Here is the code I'm using, not sure which step is wrong.
>
> vtkSmartPointer<vtkPoints> points = vtkSmartPointer<vtkPoints>::New();
> vtkSmartPointer<vtkCellArray> cell = vtkCellArray::New();
>
> for (size_t i = 0; i < point_cloud->points.size(); i++)
> {
>
>         double point[3] = { point_cloud->points[i].x,
>                 point_cloud->points[i].y,
>                 point_cloud->points[i].z };
>
>         vtkIdType id = points->InsertNextPoint(point);
>
>         cell->InsertNextCell(1);
>         cell->InsertCellPoint(id);
> }
>
> vtkSmartPointer<vtkPolyData> polyData = vtkSmartPointer<vtkPolyData>::
> New();
> polyData->SetPoints(points);
> polyData->SetVerts(cell);
>
> vtkSmartPointer<vtkVertexGlyphFilter> glyphFilter =
> vtkSmartPointer<vtkVertexGlyphFilter>::New();
> glyphFilter->SetInputData(polyData);
> glyphFilter->Update();
>
> vtkSmartPointer<vtkPolyDataMapper> mapper =
> vtkSmartPointer<vtkPolyDataMapper>::New();
> mapper->SetInputConnection(glyphFilter->GetOutputPort());
>
> vtkSmartPointer<vtkActor> actor = vtkSmartPointer<vtkActor>::New();
> actor->SetMapper(mapper);
>
>
> for some of the files this code is working fine.
>
>
>
>
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-- 
Ken Martin PhD
Chairman & CFO
Kitware Inc.
28 Corporate Drive
Clifton Park NY 12065
518 371 3971

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