Re: [whatwg] canvas drawing with singular transforms and zero-sized gradients

2011-06-26 Thread Aryeh Gregor
On Fri, Jun 24, 2011 at 10:52 PM, Robert O'Callahan rob...@ocallahan.org wrote: That's true if you call fillRect(), or fill() on a path that you've emitted while the current matrix is singular; the rectangle or path collapses to a single point (or line). I think it's completely clear browsers

Re: [whatwg] canvas drawing with singular transforms and zero-sized gradients

2011-06-26 Thread Boris Zbarsky
On 6/26/11 6:14 PM, Aryeh Gregor wrote: So this is probably my pure math background showing through rather than a very useful contribution to the discussion. If the API were designed for mathematicians, now . . . The argument could still be made that we want behavior to be continuous

Re: [whatwg] canvas drawing with singular transforms and zero-sized gradients

2011-06-26 Thread Robert O'Callahan
Gradients already aren't continuous where the start and end points are equal. I think it would be OK to draw nothing as Aryeh suggests. At least it's easy to spec and implement, and I doubt authors will care (they haven't cared about the browser behaviors so far AFAIK).

Re: [whatwg] canvas drawing with singular transforms and zero-sized gradients

2011-06-26 Thread Boris Zbarsky
On 6/26/11 8:18 PM, Robert O'Callahan wrote: Gradients already aren't continuous where the start and end points are equal. I think it would be OK to draw nothing as Aryeh suggests. At least it's easy to spec and implement, and I doubt authors will care (they haven't cared about the browser

Re: [whatwg] canvas drawing with singular transforms and zero-sized gradients

2011-06-26 Thread Robert O'Callahan
On Mon, Jun 27, 2011 at 2:11 PM, Boris Zbarsky bzbar...@mit.edu wrote: On 6/26/11 8:18 PM, Robert O'Callahan wrote: Gradients already aren't continuous where the start and end points are equal. I think it would be OK to draw nothing as Aryeh suggests. At least it's easy to spec and

[whatwg] A web standards based model for Augmented Reality

2011-06-26 Thread Rob Manson
Hi, my name is Rob Manson and I'm one of the co-founders of http://ARStandards.org and an Invited Expert on the W3C Points of Interest Working Group http://www.w3.org/2010/POI/ I've recently published an outline for a web standards based model for AR that is obviously closely related to all the

[whatwg] multiple itemtypes in microdata?

2011-06-26 Thread John Giannandrea
In the user feedback from the schema.org proposal, which uses microdata as its syntax, we have seen several use cases that would seem to require multiple itemtypes per itemscope. Currently the microdata spec only allows one itemtype which defines the meaning of the vocabulary for subsequent