# hitTestPoint in 3d

**URL:** <https://forum.kirupa.com/t/hittestpoint-in-3d/319810>\
**Category:** flash\
**Created:** [March 5, 2011, 3:53am UTC](https://forum.kirupa.com/t/hittestpoint-in-3d/319810 "2011-03-05T03:53:20Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![phastings](https://avatars.discourse-cdn.com/v4/letter/p/e9bcb4/32.png) [@phastings](https://forum.kirupa.com/u/phastings)\
**Post date:** [March 5, 2011, 3:53am UTC](https://forum.kirupa.com/t/hittestpoint-in-3d/319810/1 "2011-03-05T03:53:20Z")

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I have a 3d projectile game I’m working on. I want to check if the projectile moving down the z axis hits wall on two sides. The walls are set up like this:

leftWall = new wall();  
leftWall.x = 10;  
leftWall.y = 360;  
leftWall.z = 230;  
leftWall.rotationY = -95;

any ideas on how to do collision detection in this 3d space?