# programmable filter & transform issue

**URL:** https://discourse.paraview.org/t/programmable-filter-transform-issue/2036
**Category:** ParaView Support
**Created:** [June 13, 2019, 7:39pm UTC](https://discourse.paraview.org/t/programmable-filter-transform-issue/2036 "2019-06-13T19:39:32Z")
**Posts on this page:** 1
**Page:** 1

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### Author: ![ashirini](https://discourse.paraview.org/letter_avatar_proxy/v4/letter/a/e95f7d/32.png) [@ashirini](https://discourse.paraview.org/u/ashirini)
#### Post date: [June 13, 2019, 7:39pm UTC](https://discourse.paraview.org/t/programmable-filter-transform-issue/2036/1 "2019-06-13T19:39:33Z")

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I am trying to create an animation where two mask volumes move relative to each other (volume 1 fixed, volume 2 moving) and their intersection is rendered as they move. To do this, I use transform filter to move volume 2 (call it volume 3) and I use programmable filter with volume 1 and 3 as input to calculate the intersection of the two mask volumes. When I change the transform parameters I expected volume 2 move only, but both volumes move. Is this behavior expected?