# Gmask Tracer - spline animation Linear by default?

**URL:** https://forum.logik.tv/t/gmask-tracer-spline-animation-linear-by-default/7161
**Category:** Flame Questions
**Tags:** action, batch
**Created:** [November 24, 2022, 1:06pm UTC](https://forum.logik.tv/t/gmask-tracer-spline-animation-linear-by-default/7161 "2022-11-24T13:06:23Z")
**Posts on this page:** 2
**Page:** 1

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### Author: ![richardamckeand](https://avatars.discourse-cdn.com/v4/letter/r/858c86/32.png) [@richardamckeand](https://forum.logik.tv/u/richardamckeand)
#### Post date: [November 24, 2022, 1:06pm UTC](https://forum.logik.tv/t/gmask-tracer-spline-animation-linear-by-default/7161/1 "2022-11-24T13:06:23Z")

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Hi All,  
Is it possible to set the gmask tracer to apply linear interpolation on spline keyframes as a default without changing this behaviour throughout flame (via global prefs) or having to save and reload a custom GMT in the node bin every time?

If this is an existing feedback request please can someone share the link and I’ll vote it up.

Thanks

Rich

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### Author: ![ytf](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.logik.tv/ytf/32/109_2.png) [@ytf](https://forum.logik.tv/u/ytf)
#### Post date: [November 24, 2022, 6:23pm UTC](https://forum.logik.tv/t/gmask-tracer-spline-animation-linear-by-default/7161/2 "2022-11-24T18:23:41Z")

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It is not. Even though gmask tracer is one of the few modules with customizable defaults, the facility to determine the interpolation doesn’t exist until a mask node is created. I would actually rather see an option for the first and last keyframe of a hermite or bezier curve to interpolate as linear and all the inbetweens as smooth. I often find myself doing this manually.