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0013436

VTK

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public

2012-09-06 15:20

2014-10-06 14:16

Reporter

Guillermo

Assigned To

Will Schroeder

Priority

normal

Severity

minor

Reproducibility

have not tried

Status

closed

Resolution

fixed

Platform

OS Version

Product Version

5.8.0

Target Version

Fixed in Version

Summary

0013436: vtkBandedPolyDataContourFilter -> ClipTolerance is not able to be modified.

Description

Hi,

I am Guillermo from Synopsys and we use VTK for a visualization product. Doing refactoring work we are trying to be as close as possible to vanilla VTK so it makes the life easier for us when updating the library. Unfortunately the ClipTolerance is hardcoded to the overall input scalar range on this sentence:

this->ClipTolerance = FLT_EPSILON*(range[1] - range[0]);

We use the smallest difference between two contour levels to set the tolerance, after the calculation of the clip values:

for(int i=0; i<this->NumberOfClipValues-1; i++) {
  double dist = this->ClipValues[i+1] - this->ClipValues[i];
  if(dist < this->ClipTolerance) {
    this->ClipTolerance = dist;
  }
}

Is there a way to have an option to select the clip tolerance for future versions of VTK? Or a built in way to change from the default method availble now to other? It would help us a lot.

Thanks,
Guillermo.

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Type

feature

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Notes
(0031042) Dave DeMarle (administrator) 2013-06-25 11:18	Try adding a SetGetMacro to vtkBandedPolyDataContourFilter whereby the tolerance can be controlled. Submit that as a patch via gerrit for automated review and testing and we can get it in. For details see http://www.vtk.org/Wiki/VTK/Git/Develop [^]

(0032103) Will Schroeder (manager) 2014-01-01 13:20	Adding this feature in for our friends

Issue History
Date Modified	Username	Field	Change
2012-09-06 15:20	Guillermo	New Issue
2013-06-25 11:18	Dave DeMarle	Note Added: 0031042
2014-01-01 13:20	Will Schroeder	Note Added: 0032103
2014-01-01 13:20	Will Schroeder	Assigned To	=> Will Schroeder
2014-01-01 13:20	Will Schroeder	Status	backlog => active development
2014-01-08 06:33	Will Schroeder	Status	active development => gerrit review
2014-10-06 14:16	Will Schroeder	Status	gerrit review => closed
2014-10-06 14:16	Will Schroeder	Resolution	open => fixed