Unexpected behavoir of FindCellsWithinBounds.

Support
1

It seems that when the cell size is similar to or larger than one of the dimensions of the bounds, FindCellsWithBounds for the various cell locators returns cells that are outside the bounds. Is this expected behavior, and if so is it documented anyway? Below is an example. The transparent pillar is the bounds passed to FindCellsWithBounds, and the cells returned are marked in red.

findcells1
findcells1.png735×710 117 KB
findcells2
findcells2.png735×710 83.5 KB
findcells3
findcells3.png735×710 113 KB

2

I am afraid that I don’t know the expected and/or appropriate behavior of FindCellsWithinBounds, but it seems that the result of vtkCellTreeLocator is better than other cell locators in my test.
FindCellIsWithinBound.7z (18.7 KB)

  • vtkStaticCellLocator
    number of cells per node: default(35)
    vtkStaticCellLocator_default

  • vtkStaticCellLocator
    number of cells per node: 1
    vtkStaticCellLocator_1

  • vtkCellTreeLocator
    number of cells per node: 2
    vtkCellTreeLocator

Could you try with vtkCellTreeLocator?

3

Could I ask the developers whether they feel this bug has been squashed? I ask because recently this may/may not appear to have surfaced for our test case on 9.1 and 9.3 branch. Before we debug our work we wanted to check if this was outstanding?
Thanks
Andy