about set QInteractorStyleVesselSegmentation save to vtkPolygon

[wuzhuobin]

save contour to close loop vtkPolygon instead of vtkPolyLine can have better performance in the fill polygon part

[alabamagan]

Hmm why is that? How did you find that out? Get Outlook for iOS On Fri, Dec 2, 2016 at 11:37 PM +0800, "wuzhuobin" <[email protected]> wrote: save contour to close loop vtkPolygon instead of vtkPolyLine can have better performance in the fill polygon part — You are receiving this because you are subscribed to this thread. Reply to this email directly, view it on GitHub, or mute the thread.

[wuzhuobin]

anyway, even though
polygon cell -> vtkVoxelContoursToSurfaceFilter -> vtkPolyDataToImageStencil -> vtkImageStencil -> overlay Image
above pipeline works fine( because i mix up with the vtkImage Origin and spacing between polydata and vtkImageData).

But it didn't works when there is one slice whose neighbor slice has not contour. it only works in the situation that all contours are successive.

[wuzhuobin]

decide to use old method to fill with animation. wtf.
or using different interpolation method to generate spline like polygon to do filling slice by slice.
but the original interpolation method is vtkBezierContourLineInterpolator, which is only used in contour

[wuzhuobin]

dont use //spline->ClosedOn();l
this is a trick, which make the first point(0) and the last point merge
if a polygon which has a same point with 2 point id
if polygon->findPointsInPolygon will get wrong

[alabamagan]

Yes, that's why my polygon draw check if there are overlapping points before using it for InPolygon check.  You can reference to _FillPolygon()_ function

[wuzhuobin]

anyway, now i using the vtkParametricSpline function for interpolating contour point, although the splines are not perfectly the same as the contour line which interpolate by vtkBezierContourLineInterpolator, but it is supposed enough for coarse filling. And it is extremely fast. 55 slices take about a few seconds in release.

[alabamagan]

WOW, that's pretty amazing improvements!

[wuzhuobin]

it might be wrong in this situation...

future improvement: vtkBezierSpline. maybe do it one day

[alabamagan]

lol, leave it to user la