# Lines from behind showing after zooming out

**URL:** <https://forums.sketchup.com/t/lines-from-behind-showing-after-zooming-out/7575>\
**Category:** SketchUp\
**Created:** [February 25, 2015, 4:18am UTC](https://forums.sketchup.com/t/lines-from-behind-showing-after-zooming-out/7575 "2015-02-25T04:18:04Z")\
**Posts on this page:** 9\
**Page:** 2

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**Author:** ![yaroslav](https://sea2.discourse-cdn.com/sketchup/user_avatar/forums.sketchup.com/yaroslav/32/33171_2.png) [@yaroslav](https://forums.sketchup.com/u/yaroslav)\
**Post date:** [May 26, 2017, 8:38pm UTC](https://forums.sketchup.com/t/lines-from-behind-showing-after-zooming-out/7575/21 "2017-05-26T20:38:30Z")

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Even objects that are close to each other (0,5 mm for example), but not contacting cause this problem.

 ![](https://global.discourse-cdn.com/sketchup/original/3X/9/6/9638d77aeae4762725536265fbc2df0bc73a37e8.jpg)

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**Author:** ![endlessfix](https://sea2.discourse-cdn.com/sketchup/user_avatar/forums.sketchup.com/endlessfix/32/148757_2.png) [@endlessfix](https://forums.sketchup.com/u/endlessfix)\
**Post date:** [May 26, 2017, 9:33pm UTC](https://forums.sketchup.com/t/lines-from-behind-showing-after-zooming-out/7575/22 "2017-05-26T21:33:48Z")

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Yup, you just pointing out a quirk or do you need help fixing this by hiding lines or by adjusting to a view style that does not include edges?

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**Author:** ![yaroslav](https://sea2.discourse-cdn.com/sketchup/user_avatar/forums.sketchup.com/yaroslav/32/33171_2.png) [@yaroslav](https://forums.sketchup.com/u/yaroslav)\
**Post date:** [May 27, 2017, 2:38pm UTC](https://forums.sketchup.com/t/lines-from-behind-showing-after-zooming-out/7575/23 "2017-05-27T14:38:30Z")

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Thanks, I was answered by the link above. This decision so far suits.

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**Author:** ![nwrob1](https://avatars.discourse-cdn.com/v4/letter/n/dbc845/32.png) [@nwrob1](https://forums.sketchup.com/u/nwrob1)\
**Post date:** [December 13, 2017, 1:16am UTC](https://forums.sketchup.com/t/lines-from-behind-showing-after-zooming-out/7575/24 "2017-12-13T01:16:14Z")

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This is a terrible bug. Can’t it be fixed?

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**Author:** ![DaveR](https://sea2.discourse-cdn.com/sketchup/user_avatar/forums.sketchup.com/daver/32/7601_2.png) [@DaveR](https://forums.sketchup.com/u/DaveR)\
**Post date:** [December 13, 2017, 1:31am UTC](https://forums.sketchup.com/t/lines-from-behind-showing-after-zooming-out/7575/25 "2017-12-13T01:31:01Z")

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> [@nwrob1](#):
>
> This is a terrible bug. Can’t it be fixed?

Except it’s not a bug.

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**Author:** ![nwrob1](https://avatars.discourse-cdn.com/v4/letter/n/dbc845/32.png) [@nwrob1](https://forums.sketchup.com/u/nwrob1)\
**Post date:** [December 13, 2017, 5:51am UTC](https://forums.sketchup.com/t/lines-from-behind-showing-after-zooming-out/7575/26 "2017-12-13T05:51:08Z")

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Call it what you will.

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**Author:** ![Anssi](https://sea2.discourse-cdn.com/sketchup/user_avatar/forums.sketchup.com/anssi/32/105_2.png) [@Anssi](https://forums.sketchup.com/u/Anssi)\
**Post date:** [December 13, 2017, 6:10pm UTC](https://forums.sketchup.com/t/lines-from-behind-showing-after-zooming-out/7575/27 "2017-12-13T18:10:12Z")

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> [@DaveR](#):
>
> Except it’s not a bug.

> [@nwrob1](#):
>
> Call it what you will.

It is a feature of the mathematics used to calculate the image, and always a compromise between speed and accuracy. You cannot keep calculating forever. I have seen examples for about 30 years already, the first when creating my first hidden line perspectives in AutoCad in the late 1980s. Lines on or near surfaces either show when they should be hidden or are hidden when they should be visible. This will never be totally fixed in a digital world whereas it poses no problem in our analog physical reality.

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**Author:** ![nwrob1](https://avatars.discourse-cdn.com/v4/letter/n/dbc845/32.png) [@nwrob1](https://forums.sketchup.com/u/nwrob1)\
**Post date:** [December 14, 2017, 4:47pm UTC](https://forums.sketchup.com/t/lines-from-behind-showing-after-zooming-out/7575/28 "2017-12-14T16:47:30Z")

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Its a problem in my physical reality when I have to set up a different model version for each view. I’ve never had it happen in 3DS, so I have trouble believing it’s inevitable.

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**Author:** ![DaveR](https://sea2.discourse-cdn.com/sketchup/user_avatar/forums.sketchup.com/daver/32/7601_2.png) [@DaveR](https://forums.sketchup.com/u/DaveR)\
**Post date:** [December 14, 2017, 5:03pm UTC](https://forums.sketchup.com/t/lines-from-behind-showing-after-zooming-out/7575/29 "2017-12-14T17:03:39Z")

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I believe that 3D Studio Max uses DirectX instead of OpenGL normally. Not the same.

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