<div>Hi all,</div>
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<div> vtkPolyDataNormals can compute point normals for a polygonal mesh. If I already use this class to get normal for every point, how can I just draw one or serveral point normal out. I mean, I know the exact point coordinate, how can I draw the normal of that point? (the point is original data, no need to interpolate)
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<div>for example, </div>
<div> vtkPolyDataNormals *normals = vtkPolyDataNormals::New();<br> normals->SetInputConnection(data->GetOutputPort());<br> normals->FlipNormalsOn();<br> normals->ComputePointNormalsOn();
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<div> then what should I add? (assume my point coordinate is (x,y,z) )</div>
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<div> Any help would be appreciated. Thanks!</div>
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<div>Best,</div>
<div>Jia-Ming</div>