Hi,

Not quite PHP, but since you're all web developers you may well be
interested in this:

http://www.phpguru.org/static/canvas.html

It's a short piece on the new HTML5 canvas tag. Bonza.

--
Richard Heyes

HTML5 Graphing for FF, Chrome, Opera and Safari:
http://www.rgraph.org

On Sun, 2008-10-12 at 18:21 +0100, Richard Heyes wrote:
> Hi,
>
> Not quite PHP, but since you're all web developers you may well be
> interested in this:
>
> http://www.phpguru.org/static/canvas.html
>
> It's a short piece on the new HTML5 canvas tag. Bonza.
>
> --
> Richard Heyes
>
> HTML5 Graphing for FF, Chrome, Opera and Safari:
> http://www.rgraph.org
>
Hmm, it doesn't mention which versions of the browsers it lists are
capable of displaying the canvas tag. I'm still using Firefox 2 on this
computer, and all I got was 5 horizontal bands of grey and blue.


Ash
www.ashleysheridan.co.uk

Richard Heyes wrote:
> Hi,
>
> Not quite PHP, but since you're all web developers you may well be
> interested in this:
>
> http://www.phpguru.org/static/canvas.html
>
> It's a short piece on the new HTML5 canvas tag. Bonza.
>

very fine work mr heyes, I've been most impressed by you're RGraph - a
great use for the canvas!

On Sun, Oct 12, 2008 at 1:50 PM, Ashley Sheridan
<ash@ashleysheridan.co.uk> wrote:
>>
> Hmm, it doesn't mention which versions of the browsers it lists are
> capable of displaying the canvas tag. I'm still using Firefox 2 on this
> computer, and all I got was 5 horizontal bands of grey and blue.

Check your addons and such, Ashley. Gecko itself (the HTML
rendering engine used in Firefox) has supported <canvas> since 1.8 I
believe, which equated to Firefox 1.5.

--
</Daniel P. Brown>
More full-root dedicated server packages:
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On Sun, 2008-10-12 at 14:15 -0400, Daniel Brown wrote:
> On Sun, Oct 12, 2008 at 1:50 PM, Ashley Sheridan
> <ash@ashleysheridan.co.uk> wrote:
> >>
> > Hmm, it doesn't mention which versions of the browsers it lists are
> > capable of displaying the canvas tag. I'm still using Firefox 2 on this
> > computer, and all I got was 5 horizontal bands of grey and blue.
>
> Check your addons and such, Ashley. Gecko itself (the HTML
> rendering engine used in Firefox) has supported <canvas> since 1.8 I
> believe, which equated to Firefox 1.5.
>
What add-ons would I be looking for? I was under the impression canvas
support is built in at browser level, not plugin level.


Ash
www.ashleysheridan.co.uk

On Sun, Oct 12, 2008 at 2:21 PM, Ashley Sheridan
<ash@ashleysheridan.co.uk> wrote:
>>
> What add-ons would I be looking for? I was under the impression canvas
> support is built in at browser level, not plugin level.

And that impression would be correct, but some plugins extend and
alter the final result. Try disabling all plugins and addons, then
view the RGraph display. Before I left the Mozilla project, this was
pretty much the standard response, and was usually the fix.

--
</Daniel P. Brown>
More full-root dedicated server packages:
Intel 2.4GHz/60GB/512MB/2TB $49.99/mo.
Intel 3.06GHz/80GB/1GB/2TB $59.99/mo.
Intel 2.4GHz/320/GB/1GB/3TB $74.99/mo.
Dedicated servers, VPS, and hosting from $2.50/mo.

On Sun, 12 Oct 2008 14:15:10 -0400, Daniel Brown wrote:
> On Sun, Oct 12, 2008 at 1:50 PM, Ashley Sheridan
><ash@ashleysheridan.co.uk> wrote:
>>>
>> Hmm, it doesn't mention which versions of the browsers it lists are
>> capable of displaying the canvas tag. I'm still using Firefox 2 on this
>> computer, and all I got was 5 horizontal bands of grey and blue.
>
> Check your addons and such, Ashley. Gecko itself (the HTML
> rendering engine used in Firefox) has supported <canvas> since 1.8 I
> believe, which equated to Firefox 1.5.

Probably not Firefox 1.5. I have FF 1.5 without _any_ add-ons here and
all I got were the same "5 horizontal bands of grey and blue."

Opera 9.5 works ok.

Jonesy
--
Marvin L Jones | jonz | W3DHJ | linux
38.24N 104.55W | @ config.com | Jonesy | OS/2
* Killfiling google & XXXXbanter.com: jonz.net/ng.htm

On Sun, 2008-10-12 at 20:53 +0000, Jonesy wrote:
> On Sun, 12 Oct 2008 14:15:10 -0400, Daniel Brown wrote:
> > On Sun, Oct 12, 2008 at 1:50 PM, Ashley Sheridan
> ><ash@ashleysheridan.co.uk> wrote:
> >>>
> >> Hmm, it doesn't mention which versions of the browsers it lists are
> >> capable of displaying the canvas tag. I'm still using Firefox 2 on this
> >> computer, and all I got was 5 horizontal bands of grey and blue.
> >
> > Check your addons and such, Ashley. Gecko itself (the HTML
> > rendering engine used in Firefox) has supported <canvas> since 1.8 I
> > believe, which equated to Firefox 1.5.
>
> Probably not Firefox 1.5. I have FF 1.5 without _any_ add-ons here and
> all I got were the same "5 horizontal bands of grey and blue."
>
> Opera 9.5 works ok.
>
> Jonesy
> --
> Marvin L Jones | jonz | W3DHJ | linux
> 38.24N 104.55W | @ config.com | Jonesy | OS/2
> * Killfiling google & XXXXbanter.com: jonz.net/ng.htm
>
>
Just disable the add-ons for Fx, and no such luck. Opera 9.2 doesn't
work with it either. I think it goes back to my original point that
version numbers next to the browsers that the tag will work on might be
ful. It's a bit like saying CSS works on such-and-such browser,
without knowing what version of the browser, and what CSS property.


Ash
www.ashleysheridan.co.uk

I'm not very familiar with the whole thing yet but after looking at
your site I find it quite interesting.
So is it possible to render 3d vector based objects in the canvas and
if so an entire 3d based website?
Are there any 3d libraries yet like OpenGL for applications?
It would be quite handy to describe 3d/2d objects or styles with a
language like CSS. Do you think that will be possible in the near
future?

A yeti.

On Sun, 2008-10-12 at 14:50 -0700, Yeti wrote:
> I'm not very familiar with the whole thing yet but after looking at
> your site I find it quite interesting.
> So is it possible to render 3d vector based objects in the canvas and
> if so an entire 3d based website?
> Are there any 3d libraries yet like OpenGL for applications?
> It would be quite handy to describe 3d/2d objects or styles with a
> language like CSS. Do you think that will be possible in the near
> future?
>
> A yeti.
>
The best thing I've seen so far for 3D on the web is Papervision. It's
Flash based, but the donkey work is in Actionscript 3.

The best thing I've seen so far in terms of what it's capable of is
probably http://lab.zupko.info/reflection/realz/ which is displaying
real-time reflections for an X-wing starfighter on some sort of ice cube
mirror. You have to see it to understand it. It's also damn fast as
libraries go.


Ash
www.ashleysheridan.co.uk

> very fine work mr heyes, I've been most impressed by you're RGraph - a great
> use for the canvas!

Thank you!

--
Richard Heyes

HTML5 Graphing for FF, Chrome, Opera and Safari:
http://www.rgraph.org

> Check your addons and such, Ashley. Gecko itself (the HTML
> rendering engine used in Firefox) has supported <canvas> since 1.8 I
> believe, which equated to Firefox 1.5.

Older versions may well have issues though. An example of
inconsistencies would that FF3 doesn't seem to have a problem with
negative sizes for rectangles, whereas Chrome did. This one's easy to
fix though.

--
Richard Heyes

HTML5 Graphing for FF, Chrome, Opera and Safari:
http://www.rgraph.org

> Probably not Firefox 1.5. I have FF 1.5 without _any_ add-ons here and
> all I got were the same "5 horizontal bands of grey and blue."

So it does support it, bit not very well... :-)

--
Richard Heyes

HTML5 Graphing for FF, Chrome, Opera and Safari:
http://www.rgraph.org

Ashley Sheridan wrote:

> Hmm, it doesn't mention which versions of the browsers it lists are
> capable of displaying the canvas tag. I'm still using Firefox 2 on
> this computer, and all I got was 5 horizontal bands of grey and blue.

Same here.


/Per Jessen, Zürich

Hi,

> I'm not very familiar with the whole thing yet

I think that's a common position.

> but after looking at
> your site I find it quite interesting.
> So is it possible to render 3d vector based objects in the canvas and
> if so an entire 3d based website?

Well before you start calling the methods which actually do something,
you need to get a "context" and specify '2d' (the only one that's
supported right now), so the door has been left open for a '3d'
context. And if it doesn't materialise, then no biggie.

> Are there any 3d libraries yet like OpenGL for applications?

Don't think so. Though there is a 3d Doom-esque game which you'll find
if you look around.

> It would be quite handy to describe 3d/2d objects or styles with a
> language like CSS. Do you think that will be possible in the near
> future?

Probably not. But the drawing API is very easy to use with methods
like lineTo() and arc() etc. The drawing is all done using Javascript
so if you're familiar with that, then you're in.

--
Richard Heyes

HTML5 Graphing for FF, Chrome, Opera and Safari:
http://www.rgraph.org