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<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>i think vtkLineRepresentation (or vtkLinewidget) is a better way
to draw lines in a scene…you must set the properties of the line the way you
like, add it to the renderer and simply set the coordinates(in world
coordinates) of two end points of the line …<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0cm 0cm 0cm'>
<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span
style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>
vtkusers-bounces@vtk.org [mailto:vtkusers-bounces@vtk.org] <b>On Behalf Of </b>Konstantinos
Kelg<br>
<b>Sent:</b> Monday, January 19, 2009 5:07 AM<br>
<b>To:</b> vtkusers@vtk.org<br>
<b>Subject:</b> [vtkusers] Help with drawing lines<o:p></o:p></span></p>
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<p>Hi. I need to render some vectors in 3D space and I've decided to draw
them as lines. However my code doesn't seem to work (I see nothing). Does
anyone know why ?<o:p></o:p></p>
<p style='margin-bottom:12.0pt'>vtkCellArray *cellArrayNorm =
vtkCellArray::New();<br>
vtkPoints *points2 = vtkPoints::New();<br>
points2->Allocate(2*m_NumOfVertices*3*sizeof(float));<o:p></o:p></p>
<p>for(int k=0; k<m_NumOfVertices; k++)<o:p></o:p></p>
<p class=MsoNormal> {<br>
float* fp = VerticesP[k].coords; // Get vertex coords.<o:p></o:p></p>
<p> float* fpN = NormP[k].coords; // Get vertex normal.<o:p></o:p></p>
<p class=MsoNormal> points2->SetPoint(k, fp); // Set 1st point<br>
points2->SetPoint(m_NumOfVertices + k, // Set 2nd point.<br>
fp[0]+fpN[0], // x+dx<br>
fp[1]+fpN[1], // y+dy<br>
fp[2]+fpN[2]);// z+dz<br>
// Set up new (line) cell and insert.<br>
int pts[2] = {k, m_NumOfVertices+k};<br>
cellArrayNorm->InsertNextCell(2, pts);<br>
}<o:p></o:p></p>
<p><o:p> </o:p></p>
<p style='margin-bottom:12.0pt'> vtkPolyData *polyDataNorm =
vtkPolyData::New();<br>
polyDataNorm->SetPoints(points2);<br>
polyDataNorm->SetPolys(cellArrayNorm);<br>
<br>
vtkPolyDataMapper *polyDataMapperNorm = vtkPolyDataMapper::New();<br>
polyDataMapperNorm->SetInput(polyDataNorm);<br>
<br>
ActorNorm->SetMapper(polyDataMapperNorm);<br>
ren1->AddActor(ActorNorm);<br>
<br>
vtkProperty *prop = vtkProperty::New();<br>
prop->SetColor(1.0, 0.0, 0.0);<br>
ActorNorm->SetProperty(prop);<br>
<br>
points2->Delete();<br>
cellArrayNorm->Delete();<br>
polyDataNorm->Delete();<br>
polyDataMapperNorm->Delete();<br>
prop->Delete();<o:p></o:p></p>
<p>Thanks.<o:p></o:p></p>
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<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Calibri","sans-serif"'><o:p> </o:p></span></p>
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<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Χρησιμοποιείτε
Yahoo!<br>
Βαρεθήκατε τα ενοχλητικά μηνύ ματα (spam); Το Yahoo! Mail διαθέτει την καλύτερη
δυνατή προστασία κατά των ενοχλητικών μηνυμάτων <br>
<a href="http://login.yahoo.com/config/mail?.intl=gr">http://login.yahoo.com/config/mail?.intl=gr</a>
</span><span style='font-size:10.0pt;font-family:"Calibri","sans-serif"'><o:p></o:p></span></p>
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