Comments for simonsarris.com

Comment on A Gentle Introduction to Making HTML5 Canvas Interactive by ammulder

ammulder — Fri, 18 May 2012 01:46:00 +0000

Really nice — the bit on finding accurate mouse coordinates was especially helpful

Comment on How to play Age of Empires II on Windows Vista and Windows 7 by Darrelaubrey

Darrelaubrey — Tue, 15 May 2012 05:08:00 +0000

whats your email? i would like to talk to you more about this issue.

Comment on Understanding the HTML5 Canvas image security rules by simonsarris

simonsarris — Thu, 03 May 2012 23:46:00 +0000

Sometimes sites are hosted on domains like, for example:

http://home.comcast.net/~heidi.quinn/all_stevensline.htm (just some random page I found)But what if that site tried to grab something from internal.comcast.net, effectively taking a file from a comcast employee (presumably they’d be able to access internal.comcast.net from their computer at work but its unavailable otherwise)

Comment on Understanding the HTML5 Canvas image security rules by Lance

Lance — Thu, 03 May 2012 21:35:00 +0000

I want to access something in the same domain… but with a different machine… ie m1.myserver.com and m2.myserver.com, seems reasonably secure?

Comment on A Gentle Introduction to Making HTML5 Canvas Interactive by Brandon

Brandon — Sun, 22 Apr 2012 16:33:00 +0000

I love it!!! Thank you so much. I added an on double click shape remove ability…

[***Inside CanvasState***]
canvas.addEventListener(‘dblclick’, function(e) {
    var mouse = myState.getMouse(e);
    // check if we dblclick on existing shape
    for (var i = myState.shapes.length-1; i >= 0; i–) {
      if (myState.shapes[i].contains(mouse.x, mouse.y)) {
        myState.removeShape(i);//found one, remove it
        myState.selection = null;//clear the selection
        return;
      }
    }
    // dblclick on empty space creates new shape
    myState.addShape(new Shape(mouse.x – 10, mouse.y – 10, 20, 20, ‘rgba(0,255,0,.6)’));
}, true);

[***Below addShape***]
CanvasState.prototype.removeShape = function(i) {
this.shapes.splice(i, 1);
this.valid = false;
}

*Only problem is it will only remove the uppermost object that was dbl clicked on.. but clicking and dragging only drags the top most shape so I’m not worried.

Comment on HTML5 Canvas drawText considered harmful by Swarm Intelligence in HTML5 Canvas | cmikavac.net

Swarm Intelligence in HTML5 Canvas | cmikavac.net — Fri, 20 Apr 2012 12:00:42 +0000

[...] indicator in the top left corner of the canvas introduced some performance problems. Apparently, drawing text inside canvas is very, very poorly implemented in all browsers except Chromium. The problem I had [...]

Comment on A Gentle Introduction to Making HTML5 Canvas Interactive by Guest

Guest — Wed, 11 Apr 2012 05:17:00 +0000

you are a genius man!!

Comment on Making and Moving Selectable Shapes on an HTML5 Canvas: A Simple Example by David Miller

David Miller — Fri, 06 Apr 2012 14:53:00 +0000

Never develop a desktop application, once it reaches 300 lines of code to do something similar, you just might have a heart attack.

Comment on Increasing Performance by Caching Paths on HTML5 Canvas by Saturnix

Saturnix — Thu, 05 Apr 2012 02:44:00 +0000

Thanks! This was so useful! I’ll have to change an entire script, but I hope it will perform better. Will be following this blog :)

Comment on Customizing the HP Envy Quick Launch keys by Dianomana Huang

Dianomana Huang — Wed, 04 Apr 2012 16:30:00 +0000

Ugh ok so apparently I did something some long time ago and made the email key to change into opening up a new browser/window.

I don’t remember how I did that… and I kinda want to change it back to mail. Can someone help me? I don’t want to mess up my pc :(

Someone please email me : wildcat11293@hotmail.com