# Position plane in 3D picture
**URL:** https://discourse.vtk.org/t/position-plane-in-3d-picture/6025
**Category:** Support
**Created:** [June 21, 2021, 11:46am UTC](https://discourse.vtk.org/t/position-plane-in-3d-picture/6025 "2021-06-21T11:46:51Z")
**Posts on this page:** 3
**Page:** 1
### Author:  [@Luis\_Carlos\_Carneiro](https://discourse.vtk.org/u/Luis_Carlos_Carneiro)
#### Post date: [June 21, 2021, 11:46am UTC](https://discourse.vtk.org/t/position-plane-in-3d-picture/6025/1 "2021-06-21T11:46:52Z")
Dear All,
I want to position a plane in an 3D picture (Skull). How I navigate in a 3D perspective? The mouse has 2D coordinates. If I use pickpoint I will be limited to the bone (skull) points to position the plane.
Any help?
Thanks,
Luís Gonçalves
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### Author:  [@Luis\_Carlos\_Carneiro](https://discourse.vtk.org/u/Luis_Carlos_Carneiro)
#### Post date: [June 22, 2021, 3:46pm UTC](https://discourse.vtk.org/t/position-plane-in-3d-picture/6025/2 "2021-06-22T15:46:13Z")
I found the following article but seems too sophisticated.
> **[Mapping 2D input to 3D immersive spatial augmented reality](https://ieeexplore.ieee.org/document/7131755)**
>
> This poster presents Viewpoint Cursor, a technique for mapping 2D user input from devices such as mobile phones, trackballs, or computer mice, to 3D multi-projector spatial augmented reality systems. While the ubiquity of input devices such as these...
Are not there any experimented user with VTK that done that?
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### Author:  [@lassoan](https://discourse.vtk.org/u/lassoan)
#### Post date: [June 23, 2021, 5:12am UTC](https://discourse.vtk.org/t/position-plane-in-3d-picture/6025/3 "2021-06-23T05:12:19Z")
It is not entirely clear what you are trying to achieve, but it seems to be an application-level feature, which you can copy from open-source VTK-based applications, such as ParaView or Slicer. As always, I recommend to build on existing open-source application platforms instead of redeveloping all basic features from scratch.