On Sat, Dec 3, 2016 at 2:28 PM, Paul Masson <paulmas...@comcast.net> wrote: > There's apparently no good way in general to test whether the scene is > unchanged. This is a known issue: > > https://github.com/mrdoob/three.js/issues/7670 > > One of the comments on this thread offers another option: only render the > scene upon user interaction. I'm so accustomed to writing Three.js to be > ready for animation that I didn't think about this. If we restrict Three.js > usage in Sage to static scenes then CPU usage drops to nothing. > > I'm happy to make this change, but this means no animations in the scenes > for now.
What kind of animations are currently implemented? I can only think of spin=[number]. -- William > > > On Saturday, December 3, 2016 at 1:11:31 PM UTC-8, Volker Braun wrote: >> >> Well if the scene is static, the controls didn't change, and the canvas >> size didnt't change then your callback in requestAnimationFram should just >> do nothing instead of repainting the unchanged scene, right? >> >> >> >> On Saturday, December 3, 2016 at 9:46:50 PM UTC+1, Paul Masson wrote: >>> >>> >>> >>> On Friday, December 2, 2016 at 11:47:40 PM UTC-8, tdumont wrote: >>>> >>>> >>>> But why is three.js consuming cpu when the browser shouls have nothing >>>> to do ? (no interaction). >>> >>> >>> There is a rendering loop that runs continuously to call >>> requestAnimationFram(). This is a standard technique for JavaScript >>> animations in the browser. > > -- > You received this message because you are subscribed to the Google Groups > "sage-devel" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to sage-devel+unsubscr...@googlegroups.com. > To post to this group, send email to sage-devel@googlegroups.com. > Visit this group at https://groups.google.com/group/sage-devel. > For more options, visit https://groups.google.com/d/optout. -- William (http://wstein.org) -- You received this message because you are subscribed to the Google Groups "sage-devel" group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-devel+unsubscr...@googlegroups.com. To post to this group, send email to sage-devel@googlegroups.com. Visit this group at https://groups.google.com/group/sage-devel. For more options, visit https://groups.google.com/d/optout.
