[whatwg] Canvas "coordinate space units"

David Flanagan david at davidflanagan.com
Wed Jul 14 22:41:33 PDT 2010

Boris Zbarsky wrote:
> On 7/14/10 8:29 PM, David Flanagan wrote:
>> As an aside, do you think any implementations actually do that? It seems
>> to me that it would cause real problems with drawImage(): images would
>> look bad compared to drawn graphics...
> They do that anyway on a high-dpi display that uses multiple device 
> pixels per CSS pixel, no?  Except for scalable images, of course.

I was not aware that any such devices existed yet.  Except of course for 
printers.   Thanks to you and to Oliver for the clarification.

I still think that "coordinate space units" is a vague term and that the 
treatment of lineWidth needs to be clarified in the spec.


> The canonical example here is printing: printing a bitmap image which is 
> desined at screen resolution will produce worse output than printing a 
> scalable one.  That's just life.
> -Boris

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