# Projection in Processing

**URL:** <https://discourse.processing.org/t/projection-in-processing/38741>\
**Category:** Beginners\
**Created:** [September 13, 2022, 3:09pm UTC](https://discourse.processing.org/t/projection-in-processing/38741 "2022-09-13T15:09:44Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![xfred53](https://avatars.discourse-cdn.com/v4/letter/x/58956e/32.png) [@xfred53](https://discourse.processing.org/u/xfred53)\
**Post date:** [September 13, 2022, 3:09pm UTC](https://discourse.processing.org/t/projection-in-processing/38741/1 "2022-09-13T15:09:44Z")

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Hi,  
Using P3D, I’m looking for a way to draw projections of a shape on a plane.  
Are there some libraries that could help me ?  
Thanks.

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**Author:** ![mnse](https://yyz2.discourse-cdn.com/flex036/user_avatar/discourse.processing.org/mnse/32/16520_2.png) [@mnse](https://discourse.processing.org/u/mnse)\
**Post date:** [September 14, 2022, 3:34pm UTC](https://discourse.processing.org/t/projection-in-processing/38741/2 "2022-09-14T15:34:11Z")

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Hi @xfred53,

don’t know a library beside the big game engines, but imho you can use a concept called shadow mapping (in your case the orthographic one as perspective would distorts it to much) for it.  
[Here’s an older forum discussion](https://forum.processing.org/two/discussion/12775/simple-shadow-mapping.html) about which looks quite interesting and doing it by using processing (+shader).

Cheers  
— mnse