26526 2014-08-05 16:28:16 +0000 Fix aspect ratio constraint 2014-09-25 14:48:53 +0000 1 1 1 Unclassified WebRTC Working Group Media Capture and Streams unspecified All All RESOLVED WONTFIX P2 normal --- 1 martin.thomson public-media-capture fluffy jib public-media-capture silviapfeiffer1 oldest_to_newest 109941 0 martin.thomson 2014-08-05 16:28:16 +0000 A floating point value for a constraint won't compare to itself safely. 1.778 != 16/9. I think that we need to have an epsilon value defined for comparison here. Either that or we define a string microformat (bleargh) or a new structure (puke). A numeric value does allow for a cleaner evaluation of the ideal thing. 110012 1 silviapfeiffer1 2014-08-07 01:09:17 +0000 We handle width and height separately, why not { aspect: {x : 16, y : 9} }. Doesn't seem that complicated. 111387 2 fluffy 2014-09-11 14:42:06 +0000 We previously decided match to 10 decimal points. I'd be perfectly happy to say an epsilon of 1e-10. (or any other value, 1e-10 was picked sort of randomly as being very small so will work with video camera that are 10k by 10k but still large enough that it easily fit inside a double. If someone has a different value of epsilon to propose, I'd be fine with that. 111391 3 jib 2014-09-11 16:21:11 +0000 I think the existing epsilon covers inaccuracies in double just fine, and that arguments to change it were in the opposite direction, chasing the problem of interpreting expectations correctly of people entering decimals by hand. I believe Harald proposed 1/1000 [1], and I indicated perhaps 1/100 as being better, citing wikipedia [2] as evidence that accuracy-needs on aspect don't rise with higher resolutions. [1] http://lists.w3.org/Archives/Public/public-media-capture/2014Aug/0056.html [2] http://lists.w3.org/Archives/Public/public-media-capture/2014Aug/0084.html 112175 4 fluffy 2014-09-25 14:48:53 +0000 Chairs editors talked about this and it seemed like the current doc is fine - all this proposes is a different value of epsilon and no argument was made why current value is not OK. If someone objects, don't shoot me, I'm just the messenger.