diff options
Diffstat (limited to 'js/util.js')
| -rw-r--r-- | js/util.js | 12 |
1 files changed, 7 insertions, 5 deletions
@@ -43,7 +43,12 @@ function choice(a){ return a[randint(a.length)] } function deg(n){ return n*180/PI } function rad(n){ return n*PI/180 } function xor(a,b){ a=!!a; b=!!b; return (a||b) && !(a&&b) } -function pixel(x,y){ return 4*(mod(y,h)*w+mod(x,w)) } +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) } +function avg(m,n,a){ return (m*(a-1)+n)/a } + +function pixel(x,y){ return 4*(mod(y,actual_h)*actual_w+mod(x,actual_w)) } function rgbpixel(d,x,y){ var p = pixel(~~x,~~y) r = d[p] @@ -51,10 +56,7 @@ function rgbpixel(d,x,y){ 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) } -function avg(m,n,a){ return (m*(a-1)+n)/a } +function fit(d,x,y){ rgbpixel(d,x*actual_w/w,y*actual_h/h) } function step(a, b){ return (b >= a) + 0 |