[vtkusers] ramdom points to surface problem

[Paul Tait]

Hi All

I'm trying to create a surface from some random points so eventually I can
contour it, but I'm not getting very far

I'm using what I think is fairly standard code

polydata->SetPoints(points);
vtkDelaunay2D *del3 = vtkDelaunay2D::New();
del3->SetInput(polydata);
del3->SetSource(polydata);
mapCellTop->SetInput(del3->GetOutput());
CellTopActor->SetMapper(mapCellTop);

but I'm getting this debug output

Debug: In D:\vtk42\vtk-src-windows\Common\vtkObject.cxx, line 235
vtkDelaunay2D (2977CD48): UnRegistered by NULL, ReferenceCount = 1

Debug: In d:\vtk42\vtk-src-windows\Graphics\vtkDelaunay2D.cxx, line 312
vtkDelaunay2D (2977CD48): Generating 2D Delaunay triangulation

Debug: In d:\vtk42\vtk-src-windows\Graphics\vtkDelaunay2D.cxx, line 507
vtkDelaunay2D (2977CD48): point #0

Debug: In d:\vtk42\vtk-src-windows\Common\vtkProcessObject.h, line 90
vtkDelaunay2D (2977CD48): vtkDelaunay2D (2977CD48): returning AbortExecute
of 0

Debug: In d:\vtk42\vtk-src-windows\Graphics\vtkDelaunay2D.cxx, line 519
vtkDelaunay2D (2977CD48): Triangulated 4 points, 0 of which were duplicates

Debug: In d:\vtk42\vtk-src-windows\Graphics\vtkDelaunay2D.cxx, line 312
vtkDelaunay2D (2977CD48): Generating 2D Delaunay triangulation

ERROR: In d:\vtk42\vtk-src-windows\Graphics\vtkDelaunay2D.cxx, line 323
vtkDelaunay2D (2977CD48): <<Cannot triangulate; no input points

etc......

my point data is as follows

points->InsertPoint(0,  -86,  -454, 470.4)
points->InsertPoint(1, -119,   277, 470.5)
points->InsertPoint(2,  193, -1703, 470.39)
points->InsertPoint(3,  399,  -554, 470.6)

Any help will be appreciated and probably save my sanity

Thanks Paul Tait