- From: Ian Hickson <ian@hixie.ch>
- Date: Mon, 31 Aug 2009 05:57:34 +0000 (UTC)
- To: Simon Pieters <simonp@opera.com>
- Cc: "public-html@w3.org" <public-html@w3.org>
On Mon, 31 Aug 2009, Simon Pieters wrote: > On Sun, 30 Aug 2009 23:44:15 +0200, Ian Hickson <ian@hixie.ch> wrote: > > > > > > AFAICT it's just convenience for createImageData(imagedata.width, > > > imagedata.height), but more confusing. > > > > imagedata.width is not the CSS pixel width of the image data. > > "When invoked with a single imagedata argument, it must return an ImageData > object representing a rectangle with the same dimensions as the ImageData > object passed as the argument." > > It is not at all clear that "the same dimensions" are supposed to be different > from imagedata.width and imagedata.height. They're not. It's the numeric arguments to that function that are different. > Also: > > > > What's the use case for createImageData(imagedata)? If you have a pipeline of filters and you need scratch space, you'll need an imagedata object of the same size as the one you're working with. -- Ian Hickson U+1047E )\._.,--....,'``. fL http://ln.hixie.ch/ U+263A /, _.. \ _\ ;`._ ,. Things that are impossible just take longer. `._.-(,_..'--(,_..'`-.;.'
Received on Monday, 31 August 2009 05:55:43 UTC