boxstep
The boxstep function is somewhere between step and smoothstep.
It is the result of the convolution of a box filter with a step edge.
The width of the box filter is (b - a) and the slope of the ramp is 1/width.
boxstep(a,b,t) Returns a value from 0 to 1 depending on the position of value t between values a and b.
/*
** Usage:
** boxstep(a,b,t)
**
** Arguments:
** a lower bound, real
** b upper bound, real
** t value, real
**
** Returns:
** 0 when (t <= a),
** 1 when (t >= b),
** a linear transition from 0 to 1 when (a < t < b),
** or (-1) on error (a == b)
**
** GMLscripts.com
*/
{
var p;
if (argument0 == argument1) return (-1);
p = (argument2 - argument0) / (argument1 - argument0);
if (p <= 0) return 0;
if (p >= 1) return 1;
return p;
}
** Usage:
** boxstep(a,b,t)
**
** Arguments:
** a lower bound, real
** b upper bound, real
** t value, real
**
** Returns:
** 0 when (t <= a),
** 1 when (t >= b),
** a linear transition from 0 to 1 when (a < t < b),
** or (-1) on error (a == b)
**
** GMLscripts.com
*/
{
var p;
if (argument0 == argument1) return (-1);
p = (argument2 - argument0) / (argument1 - argument0);
if (p <= 0) return 0;
if (p >= 1) return 1;
return p;
}
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Related: bias, bias_fast, boxstep, clamp, gain, gain_fast, gammacorrect, lerp, pulse, smoothstep, spline, spline4, step
Contributor: xot
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