# Question for 3d gurus (matrices)

**URL:** <https://forum.kirupa.com/t/question-for-3d-gurus-matrices/255231>\
**Category:** flash\
**Created:** [March 20, 2008, 10:03am UTC](https://forum.kirupa.com/t/question-for-3d-gurus-matrices/255231 "2008-03-20T10:03:15Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![unindexed](https://avatars.discourse-cdn.com/v4/letter/u/e47774/32.png) [@unindexed](https://forum.kirupa.com/u/unindexed)\
**Post date:** [March 20, 2008, 10:03am UTC](https://forum.kirupa.com/t/question-for-3d-gurus-matrices/255231/1 "2008-03-20T10:03:15Z")

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OK, here’s my problem.  
I’ve started building a 3d engine (not to compete with Papervision or Sandy guys, but educate myself) and everything was looking peachy until I’ve noticed a horrendous rendering error when the model is translated.  
I’m using matrices for calculations (having read some c++ 3d primers) and the process is as follows:  
**[rotaion matrix] x [translation matrix] x [camera matrix]**  
I think I’m missing the step of merging model space / world space, but the tutorials are sparse and hard to come by.  
Would greatly appreciate any input.