On Tue, Jun 3, 2014 at 4:24 AM, Martin Thomson <m...@mozilla.com> wrote:
> > it conveys that this is a 2d matrix and that you can ignore the 3d > components. > > Maybe you misunderstood what I was implying. You are describing an > intended application of the matrix to 2d or 3d graphics. The problem is > that the is2D() method is applicable to what appears to be a generic > object. That object has a name “DOMMatrix” which implies a general > capability that isn’t present. > > However, when someone says matrix [1], I think matrix. My understanding > of matrices extends beyond 4x4 and 2x3. It’s understandable perhaps that > the matrix object is 2-dimensional only, because that is highly useful for > the application you have in mind, and a lot more besides. The DOM prefix is present because we don't want to squat on "Matrix" and various different DOM APIs need this object. The most general thing those APIs need is a matrix representation of 3D projective transforms, so that's what DOMMatrix currently provides. I find it hard to imagine needing to go beyond that; I cannot forsee Web APIs needing to interface with a general linear algebra package. If they do, extending DOMMatrix and creating an entirely new type (GeneralMatrix?) are both viable options. And keep in mind that in Web development the name of an interface type rarely shows up in application code (generally just constructors and instanceof). Rob -- Jtehsauts tshaei dS,o n" Wohfy Mdaon yhoaus eanuttehrotraiitny eovni le atrhtohu gthot sf oirng iyvoeu rs ihnesa.r"t sS?o Whhei csha iids teoa stiheer :p atroa lsyazye,d 'mYaonu,r "sGients uapr,e tfaokreg iyvoeunr, 'm aotr atnod sgaoy ,h o'mGee.t" uTph eann dt hwea lmka'n? gBoutt uIp waanndt wyeonut thoo mken.o w _______________________________________________ dev-platform mailing list dev-platform@lists.mozilla.org https://lists.mozilla.org/listinfo/dev-platform
