**
** \legal
** Copyright (c) 2002-2005 Robert B. Quattlebaum Jr., Adrian Bentley
+** Copyright (c) 2007 Chris Moore
**
** This package is free software; you can redistribute it and/or
** modify it under the terms of the GNU General Public License as
/* === M A C R O S ========================================================= */
+#define PI (3.1415927)
+
/* === G L O B A L S ======================================================= */
/* === P R O C E D U R E S ================================================= */
t_mask=rand()+rand()*RAND_MAX;
}
+// this picks one of the POOL_SIZE (256) preset values out of the pool
+// and scales it to be in the range (-1, 1). is that what it was
+// intended to do? the distribution is pretty terrible, too, with
+// some elements being picked a hundred times more often than others
float
Random::operator()(const int salt,const int x,const int y,const int t)const
{
int y((int)floor(yf));
float a=xf-x;
float b=yf-y;
- a=(1.0f-cos(a*3.1415927))*0.5f;
- b=(1.0f-cos(b*3.1415927))*0.5f;
+ a=(1.0f-cos(a*PI))*0.5f;
+ b=(1.0f-cos(b*PI))*0.5f;
float c=1.0-a;
float d=1.0-b;
int x2=x+1,y2=y+1;
float b=yf-y;
float c=tf-t;
- a=(1.0f-cos(a*3.1415927))*0.5f;
- b=(1.0f-cos(b*3.1415927))*0.5f;
+ a=(1.0f-cos(a*PI))*0.5f;
+ b=(1.0f-cos(b*PI))*0.5f;
// We don't perform this on the time axis, otherwise we won't
// get smooth motion
- //c=(1.0f-cos(c*3.1415927))*0.5f;
+ //c=(1.0f-cos(c*PI))*0.5f;
float d=1.0-a;
float e=1.0-b;