[vtkusers] PointInPolygon returns 1 for all points within bounds
Jothy
jothybasu at gmail.com
Fri Jul 22 10:38:46 EDT 2011
Hi all,
I have a mesh generated from vtkDiscreteMarchingCubes and processed through
vtkDecimatePro and vtkWindowedSincPolyDataFilter. Now, I want to find the
points/voxels inside this mesh. I am using vtkPolygon::PointInPolygon. But,
the result is "1! for the all the points whichever falls with the bounds.
Here is the piece of code that I am using
(smoother is vtkWindowedSincPolyDataFilter)
int npts=smoother->GetOutput()-> GetPoints()->GetNumberOfPoints();// test
point
//double n[3]={0.707, 0.707, 0};
double n[3];
vtkSmartPointer<vtkPolygon> polygon =
vtkSmartPointer<vtkPolygon>::New();
*
polygon->ComputeNormal(mapper->GetInput()->GetPoints()->GetNumberOfPoints(),
static_cast<double*>(mapper->GetInput()->GetPoints()->GetData()->GetVoidPointer(0)),
n); *
double bds[6];
smoother->GetOutput()->GetBounds(bds);
qDebug()<< polygon->PointInPolygon(testIn,npts,*
static_cast<double*>(mapper->GetInput()->GetPolys()->GetData()->GetVoidPointer(0)
*),bds,n)<<"Result";
Are these two highlighted lines correct?
Many thanks
Jothy
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