williammalo

converts canvas image data to a 2d array of booleans

array=img2array(imagedata,width,height)

array[x][y] //gives true or false

very useful for games where you need pixel perfect collision.

Reading an image every time you check for collision is slow. Using a 2d array makes it much faster, and has a very simple syntax (array[x][y]) .

williammalo

I always found it strange that when you set the font size to 50% in css, letters don't take 50% of the width of the page.

This script makes text behave in that way.

demo: http://maloweb.com/snippets/responsivestuff.html

williammalo

This function loops through all images on the page, and serves the appropriately sized image file from a list in a data attribute.

example link: http://total.maloweb.com/responsive

example html:

<img src="default.png" data-widths="400,600,800,1023" data-srcsuffix="-foo.png">

example javascript:

williammalo

A clone of the jquery animate function for NEW BROWSERS ONLY!

For now, you need to add a vendor prefix for it to work, but it will work in future browsers just fine.

To use the function, add it as an element prototype and use it just like you would use the jquery animate function:

element.animate(properties,duration,callback)

Also, I am aware that my coding skills suck a bit =)

williammalo

Function to check if 2 objects collide. Very useful for games.

arguments:

a: object 1 x

b: object 1 y

williammalo

use like this:

getQueryVariable("foo")

To get variables in urls eg:

http://foo.com/index.html?foo=bar

If you want to support arrays, check the version by @atk below:

williammalo

A perfect replica (hopefully) of the jQuery .css() method

testNode.css("color","blue")   //use it with two string arguments!

testNode.css({color:"red"})    //use it with an object!

testNode.css("color")          //make it return the value of a property

It's even chainable!

williammalo

I always thought there was a better way to access the dom. This is a tool that allows you to use extremely simple syntax to access dom elements. It makes an object with the name of your choice (I chose "$") that contains a reference to all elements that have an id.

example:

<script> $.foo.innerHTML = "Hello world" </script>

You can even choose to use an object that already exists (I chose "document" because it makes sense)

williammalo

This is a fork of the awesome chainify library (https://gist.github.com/gists/1466219).

I made it because I don't like with().

bonus: It's much faster! http://jsperf.com/chaining-mehods

demo here: http://jsfiddle.net/ce25R/3/

williammalo

//visual basics code from http://www.vb-helper.com/howto_net_circle_circle_tangents.html ported to glsl


vec4 FindCircleCircleIntersections(vec2 p0, float r0, vec2 p1, float r1){
    
    vec2 dd = p1-p0;
    float d = length(dd);

    float a = (r0 * r0 - r1 * r1 + d * d) / (2.0 * d);
    float h = sqrt(r0 * r0 - a * a);