vtkExtractSurface initializes point values.

vtkExtractSurface was outputting uninitialized point coordinates. This was due to skipping sections of the volume because no triangles were generated, although points needed to be. Also, the definition of "empty" voxels in vtkSignedDistance was set to -(this->Radius) to be consistent with the ppaper.

Do: test

This merge request has been queued for testing. Test results may be viewed on CDash or Buildbot (only visible from inside Kitware).

Branch-at: 633d1e5e

+2

Will, fixed my issues.

Do: merge

mentioned in commit 2cfd5df4

merged