# Page turn problem

**URL:** <https://forum.kirupa.com/t/page-turn-problem/304922>\
**Category:** Uncategorized\
**Created:** [February 16, 2010, 3:22pm UTC](https://forum.kirupa.com/t/page-turn-problem/304922 "2010-02-16T15:22:45Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Lamcho](https://avatars.discourse-cdn.com/v4/letter/l/3ec8ea/32.png) [@Lamcho](https://forum.kirupa.com/u/Lamcho)\
**Post date:** [February 16, 2010, 3:22pm UTC](https://forum.kirupa.com/t/page-turn-problem/304922/1 "2010-02-16T15:22:45Z")

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I have read the O’Reilly’s tutorial about this, but I wanna use **y** coordinate too.  
I can’t find single tutorial about the advanced type of the page turn effect  
and I can’t calculate the angle and position of the “line of symmetry”,  
can someone help me out.

Thanks.