<div dir="ltr">If you want such a thick line, why don't you use vtkTubeFilter?<br><br>Jothy<br><br><div class="gmail_quote">On Thu, Apr 26, 2012 at 1:11 PM, Stefan Köhnen <span dir="ltr"><<a href="mailto:stefan.khnen@googlemail.com" target="_blank">stefan.khnen@googlemail.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Hello,<br>
<br>
I have a problem while trying to increase the width of a vtkPolyLine.<br>
No matter what I try, the width never seems to become bigger for<br>
values above 20.<br>
<br>
For values below 20, the method SetLineWidth works as expected.<br>
<br>
My question is if there is a limitation that prevents me to increase<br>
the width further or is there an error in my implementation.<br>
<br>
To explain my problem better I modified the PolyLine-Example.<br>
I added SetLineWidth for the vtkProperty of the vtkActor.<br>
<br>
<br>
Greetings,<br>
<br>
Stefan Köhnen<br>
<br>
Here is the code:<br>
<br>
#include <vtkVersion.h><br>
#include <vtkSmartPointer.h><br>
#include <vtkCellArray.h><br>
#include <vtkCellData.h><br>
#include <vtkDoubleArray.h><br>
#include <vtkPoints.h><br>
#include <vtkPolyLine.h><br>
#include <vtkPolyData.h><br>
#include <vtkPolyDataMapper.h><br>
#include <vtkActor.h><br>
#include <vtkRenderWindow.h><br>
#include <vtkRenderer.h><br>
#include <vtkRenderWindowInteractor.h><br>
#include <vtkProperty.h><br>
<br>
int main(int, char *[])<br>
{<br>
// Create five points.<br>
double origin[3] = {0.0, 0.0, 0.0};<br>
double p0[3] = {1.0, 0.0, 0.0};<br>
double p1[3] = {0.0, 1.0, 0.0};<br>
double p2[3] = {0.0, 1.0, 2.0};<br>
double p3[3] = {1.0, 2.0, 3.0};<br>
<br>
// Create a vtkPoints object and store the points in it<br>
vtkSmartPointer<vtkPoints> points =<br>
vtkSmartPointer<vtkPoints>::New();<br>
points->InsertNextPoint(origin);<br>
points->InsertNextPoint(p0);<br>
points->InsertNextPoint(p1);<br>
points->InsertNextPoint(p2);<br>
points->InsertNextPoint(p3);<br>
<br>
vtkSmartPointer<vtkPolyLine> polyLine =<br>
vtkSmartPointer<vtkPolyLine>::New();<br>
polyLine->GetPointIds()->SetNumberOfIds(5);<br>
for(unsigned int i = 0; i < 5; i++)<br>
{<br>
polyLine->GetPointIds()->SetId(i,i);<br>
}<br>
<br>
// Create a cell array to store the lines in and add the lines to it<br>
vtkSmartPointer<vtkCellArray> cells =<br>
vtkSmartPointer<vtkCellArray>::New();<br>
cells->InsertNextCell(polyLine);<br>
<br>
// Create a polydata to store everything in<br>
vtkSmartPointer<vtkPolyData> polyData =<br>
vtkSmartPointer<vtkPolyData>::New();<br>
<br>
// Add the points to the dataset<br>
polyData->SetPoints(points);<br>
<br>
// Add the lines to the dataset<br>
polyData->SetLines(cells);<br>
<br>
// Setup actor and mapper<br>
vtkSmartPointer<vtkPolyDataMapper> mapper =<br>
vtkSmartPointer<vtkPolyDataMapper>::New();<br>
#if VTK_MAJOR_VERSION <= 5<br>
mapper->SetInput(polyData);<br>
#else<br>
mapper->SetInputData(polyData);<br>
#endif<br>
<br>
vtkSmartPointer<vtkActor> actor =<br>
vtkSmartPointer<vtkActor>::New();<br>
actor->SetMapper(mapper);<br>
<br>
////////////////////////////////////////////////////////////////////////////<br>
// Here is the explained change - Set width of line<br>
actor->GetProperty()->SetLineWidth(30.0f);<br>
////////////////////////////////////////////////////////////////////////////<br>
<br>
<br>
// Setup render window, renderer, and interactor<br>
vtkSmartPointer<vtkRenderer> renderer =<br>
vtkSmartPointer<vtkRenderer>::New();<br>
vtkSmartPointer<vtkRenderWindow> renderWindow =<br>
vtkSmartPointer<vtkRenderWindow>::New();<br>
renderWindow->AddRenderer(renderer);<br>
vtkSmartPointer<vtkRenderWindowInteractor> renderWindowInteractor =<br>
vtkSmartPointer<vtkRenderWindowInteractor>::New();<br>
renderWindowInteractor->SetRenderWindow(renderWindow);<br>
renderer->AddActor(actor);<br>
<br>
renderWindow->Render();<br>
renderWindowInteractor->Start();<br>
<br>
return EXIT_SUCCESS;<br>
}<br>
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</blockquote></div><br><br clear="all"><br>-- <br><div dir="ltr">Jothy<br></div><br>
</div>