On Thu, Apr 9, 2015 at 3:02 PM, ChunEon Park <her...@naver.com> wrote: > The reason using the matrix is efficient in computing multiple factors - > position, rotation, scale ..- at one time. > > eina matrix shouldn't be designed for only svg but for more common cases. > evas 3d will also need the eina matrix and app may uses them for their matrix > also.
Just to be sure we are talking about the same thing. Eina_Matrix3 is only suitable for 2D. You need a fourth component for it to be used for 3D. > we should design it for more common case. > so the default usage should be this, I don't mind the change. If nobody raise their voice against such a change I will do it early next week. > matrix m; > matrix_identify(m); > matrix_translate(m); > matrix_rotate(m); > matrix_scale(m); > > ------------------------------------ > -Regards, Hermet- > > -----Original Message----- > From: "Cedric BAIL"<cedric.b...@free.fr> > To: "Enlightenment developer list"<enlightenment-devel@lists.sourceforge.net>; > Cc: > Sent: 2015-04-09 (목) 17:03:04 > Subject: Re: [E-devel] [EGIT] [core/efl] master 02/02: eina_matrix: Add since > tags to all new functions in 1.14 > > Hello, > > On Thu, Apr 9, 2015 at 7:44 AM, ChunEon Park <her...@naver.com> wrote: >> Current matrix usage seems going wrong. >> I found the current matrix usage is this. >> >> matrix m; >> matrix_translate(m, ...); >> >> matrix m2; >> matrix_rotation(m, ...); >> >> matrix m3; >> matrix_scale(m, ...); >> >> matrix m4; >> matrix_compose(m, m2, m4); >> >> matrix m5; >> matrix_compose(m3, m4, m5); >> >> it's unnecessary and inefficient. >> Rather than, default matrix usage should be designed to compose of the >> transforms. >> >> matrix m; >> matrix_identify(m); >> matrix_translate(m); >> matrix_rotate(m); >> matrix_scale(m); >> >> if you focused to single factor transform rather than composition >> then single vector is enough to use rather than matrix. > > I am not to sure I understand what you mean correctly here. Your > suggestion would be to actually apply the transformation on an > existing matrix doing the set + compose in one step instead of two and > simplifying the operation by knowing where the zero already are in the > composition operation. The reason it is like this, is that in SVG you > only read the matrix once, but you compose it almost every single > frame. It made the core more compact and easier to read, but I can > understand that in different usage scenario you would want to have a > more optimized code path. I guess it can be done. > -- > Cedric BAIL > > ------------------------------------------------------------------------------ > BPM Camp - Free Virtual Workshop May 6th at 10am PDT/1PM EDT > Develop your own process in accordance with the BPMN 2 standard > Learn Process modeling best practices with Bonita BPM through live exercises > http://www.bonitasoft.com/be-part-of-it/events/bpm-camp-virtual- event?utm_ > source=Sourceforge_BPM_Camp_5_6_15&utm_medium=email&utm_campaign=VA_SF > _______________________________________________ > enlightenment-devel mailing list > enlightenment-devel@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/enlightenment-devel > ------------------------------------------------------------------------------ > BPM Camp - Free Virtual Workshop May 6th at 10am PDT/1PM EDT > Develop your own process in accordance with the BPMN 2 standard > Learn Process modeling best practices with Bonita BPM through live exercises > http://www.bonitasoft.com/be-part-of-it/events/bpm-camp-virtual- event?utm_ > source=Sourceforge_BPM_Camp_5_6_15&utm_medium=email&utm_campaign=VA_SF > _______________________________________________ > enlightenment-devel mailing list > enlightenment-devel@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/enlightenment-devel -- Cedric BAIL ------------------------------------------------------------------------------ BPM Camp - Free Virtual Workshop May 6th at 10am PDT/1PM EDT Develop your own process in accordance with the BPMN 2 standard Learn Process modeling best practices with Bonita BPM through live exercises http://www.bonitasoft.com/be-part-of-it/events/bpm-camp-virtual- event?utm_ source=Sourceforge_BPM_Camp_5_6_15&utm_medium=email&utm_campaign=VA_SF _______________________________________________ enlightenment-devel mailing list enlightenment-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/enlightenment-devel
