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-<!doctype html>
-<html>
-<head>
-<title>instructions</title>
-<style type="text/css">
-html,body{margin:0;padding:5px; }
-pre { font-family: serif; font-size: 14px; margin:0;padding:0;}
-u{ color: #866; }
-i{ color: #666; }
-</style>
-</head>
-<body>
-<pre id="pre"><u>function parameters</u>
-w, h, x, y
-t = current time (ms)
-d[] = imageData array
-r, g, b, a = color values
-mousex, mousey
-
-<u>Math aliases</u>
-floor, ceil, round
-abs, sign, mod(n,m)
-pow, exp, sqrt
-cos, sin, tan
-acos, asin, atan, atan2
-random()
-E, PI, PHI
-
-<u>convenience functions</u>
-clamp(n,min,max)
-mix(n,a,b) (lerp)
-step(a,b)
-smoothstep(min,max,n)
-avg(m,n,a)
-cosp, sinp (mapped to [0,1])
-pixel(x,y) == 4*(y*w+h)
-dist(x,y,a,b)
-angle(x,y,a,b)
-rand(n), randint(n)
-randrange(a,b)
-choice(array)
-deg(radians), rad(degrees)
-
-<u>set pixel color</u>
-rgb(r,g,b)
-rgbref([rgb])
-black() white() red()
-gray(n)
-
-<u>color spaces</u>
-rgb2xyz(rgb)
-xyz2rgb(xyz)
-xyz2hunterlab(xyz)
-hunterlab2xyz(Lab)
-xyz2cielab(xyz)
-cielab2xyz(Lab)
-rgb2hsl(rgb)
-hsl2rgb(hsl)
-rgb2cmy(r,g,b)
-cmy2rgb(cmy)
-cmy2cmyk(cmy)
-cmyk2cmy(cmyk)
-(not all have been tested)
-</pre>
-</body>
-<script>
-pre.innerHTML = pre.innerHTML.replace(/\(/g,"(<i>").replace(/\)/g,"</i>)")
-</script>
-</html>