On Tue, 8 May 2007 16:37:35 -0300 "Gustavo Sverzut Barbieri" <[EMAIL PROTECTED]> babbled:
> As Jason Tackaberry said on the other thread, here comes my proposal > for "3d" transformation for 2d objects. I've discussed this with > raster at bossa conference. > > My proposal was born to solve the missing "rotate", that if solved > would still raise missing "shear", etc.. Raster said he don't have a > _rotate() method yet because he couldn't get it as fast as possible on > each engine. > > Since many operations can be handled by transform matrix and some > engines (ie: GL), can handle it fast, just expose: > void evas_object_transform(Evas_Object *obj, double matrix[4][4]) > Given one knows how to fill the coefficients he can achieve his > rotation/shear/... goals and it will be fast as hell on GL. Other > engines will not run as fast, but it'll be up to the user to handle > that. > > This would enable fancy "beryl-like" effects inside Evas, wanted by > Freevo guys. This may also be used by embedded devices given OpenGL/ES > support. this is perfectly possible and on the list of things i'd like to see evas get (eventually) but again like most things. it gets expensive to do AND keep high-quality AND high-speed. rotation is a subset of transform matrix fun and probably the most common use of them after scaling. the only other things we would miss is shearing. a transform makes it very generic - but transform matricies generally tend to be much more painful to work with than simple rotate/scale calls. i'd personally like to have both. use the matrix OR just use the resize/fill/(and later rotate) calls. > -- > Gustavo Sverzut Barbieri > -------------------------------------- > Jabber: [EMAIL PROTECTED] > MSN: [EMAIL PROTECTED] > ICQ#: 17249123 > Skype: gsbarbieri > Mobile: +55 (81) 9927 0010 > > ------------------------------------------------------------------------- > This SF.net email is sponsored by DB2 Express > Download DB2 Express C - the FREE version of DB2 express and take > control of your XML. No limits. Just data. Click to get it now. > http://sourceforge.net/powerbar/db2/ > _______________________________________________ > enlightenment-devel mailing list > enlightenment-devel@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/enlightenment-devel > -- ------------- Codito, ergo sum - "I code, therefore I am" -------------- The Rasterman (Carsten Haitzler) [EMAIL PROTECTED] 裸好多 Tokyo, Japan (東京 日本) ------------------------------------------------------------------------- This SF.net email is sponsored by DB2 Express Download DB2 Express C - the FREE version of DB2 express and take control of your XML. No limits. Just data. Click to get it now. http://sourceforge.net/powerbar/db2/ _______________________________________________ enlightenment-devel mailing list enlightenment-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/enlightenment-devel
