On Sat, 7 Dec 2013 15:19:41 +0100 Andreas Volz <li...@brachttal.net> said:
> Am Fri, 6 Dec 2013 22:48:50 +0900 schrieb Carsten Haitzler (The > Rasterman): > > > On Fri, 6 Dec 2013 10:19:43 -0200 Gustavo Sverzut Barbieri > > <barbi...@gmail.com> said: > > > > > On Fri, Dec 6, 2013 at 12:25 AM, Carsten Haitzler > > > <ras...@rasterman.com> wrote: > > > > On Fri, 6 Dec 2013 00:18:58 +0100 Andreas Volz > > > > <li...@brachttal.net> said: > > > > > > > >> Hello, > > > >> > > > >> I've the use case to develop a digital cluster instrument demo > > > >> with Edje or Elementary. Main element are two rotating pointers > > > >> as on this mechanical device, but with a big display: > > > >> > > > >> http://www.passatplus.de/umbauten/kombiinstrument/tachoringe.jpg > > > >> > > > >> My requirement is that that speed should be around 400°/sec > > > >> rotary speed without visual bad result. > > > >> > > > >> I developed two first demos. One with a 2D image which is > > > >> rotated with a edje map. Another with a prerendered pointer for > > > >> each angle. Both solutions work, but visual effect is bad for > > > >> very fast rotating pointers. > > > > > > > > have you looked at the tacho used for cpufreq in e? it does a > > > > separate shadow object that is "below" the dial so its in the > > > > right position (split shadow out from the dial needle itself). > > > > it's always looked rather nice to me... shadow is correct, dial > > > > can rotate any way i like and at any speed... > > > > > > he describes problem with fast changes... (okay, the shadow thing > > > is likely a problem as well and easy to fix as you said!) > > > > actually he didnt describe it at all. he just said "bad". that > > doesn't say much at all. using map to rotate a dial or drawing one > > I uploaded a demo: > > http://tux-style.de/tmp/tacho.edj permission denided to the edj. :( i need the images for the edc. :( > code: http://codepad.org/T5Zzcnbj > > If you size it up (target display has 1440x550 pixels) you see the > effect even more. And I need two pointers. depends on resolution of the original images. note the clock and tacho in the e17/e18 theme use multiple images with "mipmapping" of choosing the closest/best image. :) > The "right" move is nearly acceptable, but the fast way to "left" is > "jumping" much. There's a implementation with another toolkit at my > work which renders the pointer with 75hz update rate and it looks > perfect without any jumping with the same speed. So it seems edje > doesn't update the rotation with enough frames. So my hope was the > rotating a 3D vertex object with opengl is faster than rotating an > image. edje will run at the framerate of your app regardless - ie the ecore_animator.. UNLESS rendering slows it down or some other activity slows it down from rendering. using the gl engine instead of software may get you better quality for the rendering for maps too - but no need to go all the way to opengl directly in your code. the needle just is an image that is rendered in gl as 2 triangles, but rotated. so if you have framerate problems i suspect it's something else and not something that hand-drawing triangles in gl will cure where doing it some more generic way won't. > Andreas > > -- > Technical Blog <http://andreasvolz.wordpress.com/> > > ------------------------------------------------------------------------------ > Sponsored by Intel(R) XDK > Develop, test and display web and hybrid apps with a single code base. > Download it for free now! > http://pubads.g.doubleclick.net/gampad/clk?id=111408631&iu=/4140/ostg.clktrk > _______________________________________________ > 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) ras...@rasterman.com ------------------------------------------------------------------------------ Rapidly troubleshoot problems before they affect your business. Most IT organizations don't have a clear picture of how application performance affects their revenue. With AppDynamics, you get 100% visibility into your Java,.NET, & PHP application. Start your 15-day FREE TRIAL of AppDynamics Pro! http://pubads.g.doubleclick.net/gampad/clk?id=84349831&iu=/4140/ostg.clktrk _______________________________________________ enlightenment-devel mailing list enlightenment-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/enlightenment-devel
