On Fri, 24 Jun 2011, Robert O'Callahan wrote:
Consider this testcase:
http://people.mozilla.org/~roc/SingularCanvasMatrix.html
It sets up a rectangle to fill, then sets the current matrix to a singular
matrix (yy=0 in this case), then fills with different fillStyles. It's not
clear from the
On Sun, Jun 26, 2011 at 5:18 PM, Robert O'Callahan rob...@ocallahan.org 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
On Wed, Jun 29, 2011 at 6:19 AM, Tab Atkins Jr. jackalm...@gmail.comwrote:
On Sun, Jun 26, 2011 at 5:18 PM, Robert O'Callahan rob...@ocallahan.org
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.
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
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
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).
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
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
On Fri, Jun 24, 2011 at 8:00 PM, Robert O'Callahan rob...@ocallahan.org wrote:
On Sat, Jun 25, 2011 at 5:38 AM, Aryeh Gregor simetrical+...@gmail.comwrote:
If you define different behavior for solid colors or gradients,
doesn't that mean that they'll behave differently from if you used an
On Fri, Jun 24, 2011 at 1:09 AM, Robert O'Callahan rob...@ocallahan.org wrote:
Consider this testcase:
http://people.mozilla.org/~roc/SingularCanvasMatrix.html
It sets up a rectangle to fill, then sets the current matrix to a singular
matrix (yy=0 in this case), then fills with different
On Sat, Jun 25, 2011 at 5:38 AM, Aryeh Gregor simetrical+...@gmail.comwrote:
I'm not familiar enough with the canvas API to have an informed
opinion on what should happen here, but mathematically it makes sense
to me that nothing should be drawn ever if the transform matrix is
singular.
On Sat, Jun 25, 2011 at 5:38 AM, Aryeh Gregor simetrical+...@gmail.comwrote:
If you define different behavior for solid colors or gradients,
doesn't that mean that they'll behave differently from if you used an
image that looked exactly the same? That seems bad.
If you set up a path
Consider this testcase:
http://people.mozilla.org/~roc/SingularCanvasMatrix.html
It sets up a rectangle to fill, then sets the current matrix to a singular
matrix (yy=0 in this case), then fills with different fillStyles. It's not
clear from the spec how this is supposed to behave, and there's not
PS, ignore the zero-sized gradients part of the subject. Sorry.
Rob
--
If we claim to be without sin, we deceive ourselves and the truth is not in
us. If we confess our sins, he is faithful and just and will forgive us our
sins and purify us from all unrighteousness. If we claim we have not
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