Browser based Canvas UI?

[Ken Seehart]

CTO wrote:
> On May 30, 4:12 am, Ken Seehart <k... at seehart.com> wrote:
>   
>> A couple years ago I stumbled upon an interesting technology but I can't
>> seem to find it, and I can remember what it is called.  Unfortunately
>> this makes it difficult to search for.  I am am aware of several partial
>> matches (items that meet a subset of the requirement listed below).  
>> Does anyone know what does /all/ of the following?
>>
>> 1. Works on at least FF and IE on XP and Linux out of the box, probably
>> others
>>
>> 2. Does not require /any/ plugin download at all of any kind to view
>> (this disqualifies flash, svg, silverlight, java, and others)
>>
>> 3. If you go to the web page for the first time on a freshly installed
>> operating system, without admin privileges, you will see the
>> functionality listed below immediately, and with no downloaded plugins
>> and installers.  (I apologize for the redundancy, but I want to
>> preemptively avoid a flood of non-applicable responses).
>>
>> 4. Graphics, including sprite animation
>>
>> 5. Dynamic response to mouse motion: dragging sprites for example
>>
>> 6. Programmable in Python, of course
>>
>> Hints from what I can recall:
>> - Built from javascript as it's raw material under the hood (after all,
>> it can't very well be anything else given requirements 1,2,3)
>> - Seems quite magical since I didn't know the necessary graphical raw
>> materials existed in javascript
>> - I think it's based on Ajax, but I can't seem to find a relevant python
>> demo of it due to too much clutter in my google searches
>>
>> Ken
>>     
>
> Probably thinking of Pyjamas- <URL: http://pyjamas.sourceforge.net/>.
> It lets you interact with canvas- <URL: http://www.blobsallad.se/>-
> without writing any javascript.
>
> Geremy Condra
>   
Yeah, looks like pyjamas is probably it.  Thanks.

OMG,  http://www.blobsallad.se is way too cool, .but it's javascript, so 
I'm assuming the idea is that it could have been done in python and 
converted to javascript using pyjamas.

Anyway, I think I need to be more specific about the sprites:

7. Supports drawing semi-transparent bitmap sprites (preferably png)

Anyone happen to know where I can find an online example of animating 
with sprites (within the constraints of 1-7 above)?

Thanks,
- Ken