# Intersection line problem

**URL:** <https://discourse.slicer.org/t/intersection-line-problem/31262>\
**Category:** Development\
**Created:** [August 21, 2023, 1:48pm UTC](https://discourse.slicer.org/t/intersection-line-problem/31262 "2023-08-21T13:48:37Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![icedream](https://avatars.discourse-cdn.com/v4/letter/i/48db29/32.png) [@icedream](https://discourse.slicer.org/u/icedream)\
**Post date:** [August 21, 2023, 1:48pm UTC](https://discourse.slicer.org/t/intersection-line-problem/31262/1 "2023-08-21T13:48:37Z")

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why the red intersection line is shorter than the others?

 ![image](https://us1.discourse-cdn.com/flex002/uploads/slicer/original/3X/7/b/7bd6c550cf2063fc81b5a4f7a9d6ff15452b4e86.jpeg)  
can i use some code to make the red intersection line as long as others?

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**Author:** ![pieper](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/pieper/32/8_2.png) [@pieper](https://discourse.slicer.org/u/pieper)\
**Post date:** [August 21, 2023, 5:37pm UTC](https://discourse.slicer.org/t/intersection-line-problem/31262/2 "2023-08-21T17:37:55Z")

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The slice intersection length is the size of the field of view (it will change size as you zoom in and out). Maybe you want the basic crosshair instead.

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<div class="post-metadata">

**Author:** ![icedream](https://avatars.discourse-cdn.com/v4/letter/i/48db29/32.png) [@icedream](https://discourse.slicer.org/u/icedream)\
**Post date:** [August 22, 2023, 8:27am UTC](https://discourse.slicer.org/t/intersection-line-problem/31262/3 "2023-08-22T08:27:11Z")

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thank you pieper , i change the field of view from 256 default to 128 or change 256 default to 512 ,like the picture below

 ![image](https://us1.discourse-cdn.com/flex002/uploads/slicer/original/3X/5/9/595849806c3ac6b75d7abed075eb67d7fc3e61cd.jpeg)  
 ![image](https://us1.discourse-cdn.com/flex002/uploads/slicer/original/3X/8/2/825e9a472bb0a4fcf2b6e9fffc8cc7959c342cd4.png)  
the right bottom red slice is shorter than the red slice left bottom

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<div class="post-metadata">

**Author:** ![icedream](https://avatars.discourse-cdn.com/v4/letter/i/48db29/32.png) [@icedream](https://discourse.slicer.org/u/icedream)\
**Post date:** [August 22, 2023, 8:31am UTC](https://discourse.slicer.org/t/intersection-line-problem/31262/4 "2023-08-22T08:31:11Z")

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yes ,crosshair is fine,thank you!!

 ![image](https://us1.discourse-cdn.com/flex002/uploads/slicer/original/3X/a/b/abbdd519aad6ae665b8c285d9240ef5bc1fe8a65.jpeg)

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<div class="post-metadata">

**Author:** ![slicer365](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/slicer365/32/67549_2.png) [@slicer365](https://discourse.slicer.org/u/slicer365)\
**Post date:** [August 22, 2023, 2:19pm UTC](https://discourse.slicer.org/t/intersection-line-problem/31262/5 "2023-08-22T14:19:20Z")

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Recently, we have also encountered this problem.

Our customers have asked to spread these three wires all over the window.

We can replace this through crosshair, but croosshair does not support rotation.

In the old version, we also need to operate together through shortcut keys and mouse.

Do you have a way to spread the three wires of MPR all over the window directly?

we have rebuilt the source code of slicer

thank you.

like this

[https://us1.discourse-cdn.com/flex002/uploads/slicer/original/3X/6/1/618fbc047b0774a3c7738cec2e276a330a08555b.mp4](https://us1.discourse-cdn.com/flex002/uploads/slicer/original/3X/6/1/618fbc047b0774a3c7738cec2e276a330a08555b.mp4)