<div dir="ltr">Hi,<div><br></div><div>Please refer to attached program. I hope it helps.</div></div><div class="gmail_extra"><br><div class="gmail_quote">On 27 July 2017 at 13:21, arwtyxouymz <span dir="ltr"><<a href="mailto:arw.tyx-ouy_mz@ezweb.ne.jp" target="_blank">arw.tyx-ouy_mz@ezweb.ne.jp</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><br>
I want to make normal vector of the surface of ellipstic cylinder.<br>
To each surface point, I want to render normal vector, and get surface<br>
point.<br>
The current code is this.<br>
<br>
#include "vtkPoints.h"<br>
#include "vtkSmartPointer.h"<br>
#include "vtkLinearExtrusionFilter.h"<br>
#include "vtkDataSetMapper.h"<br>
#include "vtkPolyDataMapper.h"<br>
#include "vtkActor.h"<br>
#include "vtkProperty.h"<br>
#include "vtkCamera.h"<br>
#include "vtkRenderer.h"<br>
#include "vtkRenderWindow.h"<br>
#include "vtkRenderWindowInteractor.h"<br>
#include "<wbr>vtkInteractorStyleTrackballCam<wbr>era.h"<br>
#include "vtkPolyLine.h"<br>
<br>
<br>
int main(int argc, char *argv[])<br>
{<br>
<br>
double angle = 0;<br>
double r1, r2;<br>
int id = 0;<br>
int CenterX, CenterY;<br>
r1 = 50;<br>
r2 = 30;<br>
CenterX = 0; CenterY = 0;<br>
<br>
vtkSmartPointer<vtkPoints> points =<br>
vtkSmartPointer<vtkPoints>::<wbr>New();<br>
points->SetNumberOfPoints(31);<br>
while (angle <= 2.0 * vtkMath::Pi() + (vtkMath::Pi() / 360.0))<br>
{<br>
points->InsertPoint(id, r1 * cos(angle) + CenterX, r2 * sin(angle) +<br>
CenterY, 0);<br>
angle = angle + (vtkMath::Pi() / 360.0);<br>
id++;<br>
}<br>
<br>
vtkSmartPointer<vtkPolyLine> line =<br>
vtkSmartPointer<vtkPolyLine>::<wbr>New();<br>
line->GetPointIds()-><wbr>SetNumberOfIds(id);<br>
for (int k = 0; k < id; ++k) {<br>
line->GetPointIds()->SetId(k, k);<br>
}<br>
<br>
vtkSmartPointer<vtkCellArray> lines =<br>
vtkSmartPointer<vtkCellArray>:<wbr>:New();<br>
lines->InsertNextCell(line);<br>
<br>
vtkSmartPointer<vtkPolyData> polyData =<br>
vtkSmartPointer<vtkPolyData>::<wbr>New();<br>
polyData-><wbr>GlobalReleaseDataFlagOff();<br>
polyData->Allocate(1, 1);<br>
polyData->SetPoints(points);<br>
polyData->SetLines(lines);<br>
<br>
vtkSmartPointer<<wbr>vtkLinearExtrusionFilter> extrude =<br>
vtkSmartPointer<<wbr>vtkLinearExtrusionFilter>::<wbr>New();<br>
extrude->SetInputData(<wbr>polyData);<br>
extrude-><wbr>SetExtrusionTypeToNormalExtrus<wbr>ion();<br>
extrude->SetVector(0, 0, 100.0);<br>
extrude->SetScaleFactor(0.5);<br>
extrude->Update();<br>
<br>
vtkSmartPointer<<wbr>vtkPolyDataMapper> mapper =<br>
vtkSmartPointer<<wbr>vtkPolyDataMapper>::New();<br>
mapper->SetInputConnection(<wbr>extrude->GetOutputPort());<br>
<br>
/*<br>
vtkSmartPointer<<wbr>vtkCylinderSource> cylinder =<br>
vtkSmartPointer<<wbr>vtkCylinderSource>::New();<br>
cylinder->SetRadius(5.0);<br>
cylinder->SetHeight(10.0);<br>
cylinder->SetResolution(100);<br>
<br>
vtkSmartPointer<<wbr>vtkPolyDataMapper> mapper =<br>
vtkSmartPointer<<wbr>vtkPolyDataMapper>::New();<br>
mapper->SetInputConnection(<wbr>cylinder->GetOutputPort());<br>
*/<br>
<br>
vtkSmartPointer<vtkActor> actor =<br>
vtkSmartPointer<vtkActor>::<wbr>New();<br>
actor->SetMapper(mapper);<br>
actor->GetProperty()-><wbr>SetColor(0.8900, 0.8100, 0.3400);<br>
<br>
vtkSmartPointer<vtkRenderer> ren =<br>
vtkSmartPointer<vtkRenderer>::<wbr>New();<br>
ren->SetBackground(.4, .5, .7);<br>
ren->AddActor(actor);<br>
<br>
<br>
vtkSmartPointer<<wbr>vtkRenderWindow> renWin =<br>
vtkSmartPointer<<wbr>vtkRenderWindow>::New();<br>
renWin->AddRenderer(ren);<br>
renWin->SetSize(600, 600);<br>
<br>
vtkSmartPointer<<wbr>vtkRenderWindowInteractor> iren =<br>
vtkSmartPointer<<wbr>vtkRenderWindowInteractor>::<wbr>New();<br>
iren->SetRenderWindow(renWin);<br>
<br>
vtkSmartPointer<<wbr>vtkInteractorStyleTrackballCam<wbr>era> style =<br>
vtkSmartPointer<<wbr>vtkInteractorStyleTrackballCam<wbr>era>::New();<br>
iren->SetInteractorStyle(<wbr>style);<br>
<br>
renWin->Render();<br>
iren->Initialize();<br>
iren->Start();<br>
<br>
return EXIT_SUCCESS;<br>
}<br>
<br>
please help me!<br>
<br>
<br>
<br>
--<br>
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</blockquote></div><br><br clear="all"><div><br></div>-- <br><div class="gmail_signature" data-smartmail="gmail_signature"><div dir="ltr">thanks & regards,<div>Girish</div><div><br></div></div></div>
</div>
<br>
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