# Can I Scissors Inside throuth points?

**URL:** <https://discourse.slicer.org/t/can-i-scissors-inside-throuth-points/9508>\
**Category:** Development\
**Created:** [December 15, 2019, 2:49pm UTC](https://discourse.slicer.org/t/can-i-scissors-inside-throuth-points/9508 "2019-12-15T14:49:52Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![timeanddoctor](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/timeanddoctor/32/5839_2.png) [@timeanddoctor](https://discourse.slicer.org/u/timeanddoctor)\
**Post date:** [December 15, 2019, 2:49pm UTC](https://discourse.slicer.org/t/can-i-scissors-inside-throuth-points/9508/1 "2019-12-15T14:49:52Z")

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Can I Scissors Inside throuth markupNode created myself?

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**Author:** ![lassoan](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/lassoan/32/13_2.png) [@lassoan](https://discourse.slicer.org/u/lassoan)\
**Post date:** [December 15, 2019, 11:44pm UTC](https://discourse.slicer.org/t/can-i-scissors-inside-throuth-points/9508/2 "2019-12-15T23:44:40Z")

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Markups node positions are defined in patient coordinates in 3D, while [input points for scissors effect](https://github.com/Slicer/Slicer/blob/master/Modules/Loadable/Segmentations/EditorEffects/qSlicerSegmentEditorScissorsEffect.cxx#L507-L807) are specified in display coordinate system. If you have points in 3D, then you can create a cut surface using “Surface cut” effect (in SegmentEditorExtraEffects extension).