3 replies to this topic

[Magmaramus]

I came up with this in math class today. It's probably useless but I'm posting it anyway.

abs(x) = x * (sign(x));

[YellowAfterlife]

Normally, if you'd want this in script, you would do:

if (argument0 < 0) return -argument0
return argument0

Or in some gm-specific way:

var n;
n = (argument0 < 0)
return (n * -argument0) + (!n * +argument0)

Or even more gm-specific way:

return ((argument0 >= 0) - 0.5) * 2 * argument0

[TheSnidr]

Absolute values are generally calculated like this:
1 dimension - abs(x)=sqrt(sqr(x))
2 dimensions - abs(x,y)=sqrt(sqr(x)+sqr(y))
3 dimensions - abs(x,y,z)=sqrt(sqr(x)+sqr(y)+sqr(z))
Though, as square root is rather slow, it's better to use the already built in functions:
Abs(x)
Point_distance(x1,y1,x2,y2)
Point_distance_3d(bleh)

[Digisynth]

I've found out this:
a mod b = a - b*floor(a/b)

Edited by Digisynth, 04 March 2012 - 10:14 AM.