I took due days to try to understand anything about quaternion but got no result. the resaon why I paied out so much on quaternion is that, I'm trying to write a better camera system which is to added to my cuby projectcan. it shoshould Be Able To Move & rotate freely ,. and meanwhile it uses as simple & little representation for itself as possible. so without saying that I refered to ogre's implement Ation and found it uses Quaternion. but I don't only copy its code, I want to make out principle behind the code. according to comments in the code of quaternion part from ogre, I got a meesage that there is Article linked at http://www.cs.ucr.edu /~ Vbz/resources/quatut.pdf explained details of Quaternion. I'm not drawing blank, though. There is somewhat a little progress. Anyway, I'll read it in near term.
Recently, I spent a long time understanding the Quaternary element, but I always got nothing. I studied the quad book because I was trying to write a relatively more sophisticated camera system that could be used in my cuby project. It should be able to express itself in as concise a way as possible while moving and rotating flexibly. Naturally, I referred to the implementation method of ogre and found that it uses a quaternary element. But I don't just want to copy it according to its code. I want to know the principle behind the element. From the Ogre code comment I found a clue that it uses a paper here http://www.cs.ucr.edu /~ Vbz/resources/quatut.pdf. In short, I still have some gains. I will read it soon ~
BTW: first time to write bilingual notes and felt a little strenuous ../the first time I wrote bilingual notes, I still felt a little hard ..