From 0b74af017f032f5f79771954d034717ed3700e50 Mon Sep 17 00:00:00 2001 From: Jules Date: Tue, 17 Dec 2013 09:53:30 -0500 Subject: rgbpixel --- js/util.js | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'js') diff --git a/js/util.js b/js/util.js index 7ecb20b..8ad163d 100644 --- a/js/util.js +++ b/js/util.js @@ -41,6 +41,13 @@ function choice(a){ return a[randint(a.length)] } function deg(n){ return n*180/PI } function rad(n){ return n*PI/180 } function pixel(x,y){ return 4*(y*w+x) } +function rgbpixel(d,x,y){ + var p = pixel(x,y) + r = d[p] + g = d[p+1] + b = d[p+2] + a = d[p+3] +} function mod(n,m){ return n-(m * floor(n/m)) } function dist(x0,y0,x1,y1){ return sqrt(pow(x1-x0,2)+pow(y1-y0,2) } function angle(x0,y0,x1,y1){ return atan2(y1-y0,x1-x0) } -- cgit v1.2.3-70-g09d2