# How to achieve this AlwaysOnTop effect？

**URL:** https://discourse.vtk.org/t/how-to-achieve-this-alwaysontop-effect/13003
**Category:** Support
**Created:** [January 4, 2024, 3:05am UTC](https://discourse.vtk.org/t/how-to-achieve-this-alwaysontop-effect/13003 "2024-01-04T03:05:47Z")
**Posts on this page:** 1
**Page:** 1

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### Author: ![nanoahSR](https://discourse.vtk.org/letter_avatar_proxy/v4/letter/n/45deac/32.png) [@nanoahSR](https://discourse.vtk.org/u/nanoahSR)
#### Post date: [January 4, 2024, 3:05am UTC](https://discourse.vtk.org/t/how-to-achieve-this-alwaysontop-effect/13003/1 "2024-01-04T03:05:47Z")

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Hello!

I want to achieve the Star CCM+ AlwaysOnTop effect. Is this AlwaysOnTopmade with Coincident topology? If so, how are the parameters determined, especially the `units`?

 ![image](https://discourse.vtk.org/uploads/default/original/2X/e/eac8f2ce79b018611f8c477dc5c021b191b5e14b.png)  
 ![image](https://discourse.vtk.org/uploads/default/original/2X/a/a8f729f2fc2cac82c6b374fd9dad360da598dec8.png)

This internal component can be seen from all angles, and it has a somewhat levitating feel.