# Circle gets measles

**URL:** <https://discourse.shapr3d.com/t/circle-gets-measles/23921>\
**Category:** Modeling Questions\
**Created:** [February 3, 2023, 6:45am UTC](https://discourse.shapr3d.com/t/circle-gets-measles/23921 "2023-02-03T06:45:16Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![Peter\_b](https://avatars.discourse-cdn.com/v4/letter/p/85f322/32.png) [@Peter\_b](https://discourse.shapr3d.com/u/Peter_b)\
**Post date:** [February 3, 2023, 6:45am UTC](https://discourse.shapr3d.com/t/circle-gets-measles/23921/1 "2023-02-03T06:45:16Z")

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I projected a circle and suddenly I get a circle with dots in sketchmode. How did this happen and how do I get rid of the circles infection.

 ![Ohne Titel 2](https://us1.discourse-cdn.com/flex002/uploads/shapr3d/original/3X/1/3/137393a9bbb8d48498aed58d72ee85089949a214.jpeg)

If I delete the dots I get this:

 ![Ohne Titel2](https://us1.discourse-cdn.com/flex002/uploads/shapr3d/original/3X/e/f/ef06beb44acfb3d9e04d0b0d2e9c03d402e45ef1.jpeg)

which looks fine until I draw a tangent and I get back to the first picture.

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**Author:** ![TheBum](https://avatars.discourse-cdn.com/v4/letter/t/eada6e/32.png) [@TheBum](https://discourse.shapr3d.com/u/TheBum)\
**Post date:** [February 3, 2023, 6:45pm UTC](https://discourse.shapr3d.com/t/circle-gets-measles/23921/2 "2023-02-03T18:45:49Z")

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Did you project from an imported object? If so, it’s possible the object defined the circle as a polygon.

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<div class="post-metadata">

**Author:** ![Peter\_b](https://avatars.discourse-cdn.com/v4/letter/p/85f322/32.png) [@Peter\_b](https://discourse.shapr3d.com/u/Peter_b)\
**Post date:** [February 3, 2023, 7:00pm UTC](https://discourse.shapr3d.com/t/circle-gets-measles/23921/3 "2023-02-03T19:00:25Z")

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Yes I did. Is this a bug?

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**Author:** ![Laci\_K](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/laci_k/32/8196_2.png) [@Laci\_K](https://discourse.shapr3d.com/u/Laci_K)\
**Post date:** [February 4, 2023, 7:44am UTC](https://discourse.shapr3d.com/t/circle-gets-measles/23921/4 "2023-02-04T07:44:38Z")

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If it’s not a perfect circle originally, or the plane you project to isn’t perfectly perpendicular to it, it becomes essentially an ellipse, made from many splines, to be as accurate as possible.

It’s not a bug, that’s the intended behaviour.