cal/cal/noise.cal

frac(x)=x-floor(x);

hermite(p0,p1,r0,r1,t) =        p0 * ((2*t-3)*t*t+1) +
                                p1 * (-2*t+3)*t*t +
                                r0 * (((t-2)*t+1)*t) +
                                r1 * ((t-1)*t*t);

rand2a(x) = 1-2*rand(.69692*x);
rand2b(x) = 1-2*rand(.05393*x);

noise(x) = noise_1(floor(x),frac(x),ceil(x));

noise_1(xl,xd,xu) = hermite(
                                rand2a(xl),
                                rand2a(xu),
                                rand2b(xl),
                                rand2b(xu),
                                xd);
Revision:	1.2
Committed:	Wed Dec 15 01:40:11 2010 UTC (13 years, 4 months ago) by greg
Branch:	MAIN
CVS Tags:	rad5R2, rad4R2P2, rad5R0, rad5R1, rad4R2, rad4R1, rad4R2P1
Changes since 1.1:	+1 -1 lines
Log Message:	Updated SConscript files for compiling under MINGW
#	User	Rev	Content
1	greg	1.1	frac(x)=x-floor(x);
2
3			hermite(p0,p1,r0,r1,t) = p0 * ((2t-3)t*t+1) +
4			p1 * (-2t+3)t*t +
5			r0 * (((t-2)t+1)t) +
6			r1 * ((t-1)tt);
7
8			rand2a(x) = 1-2rand(.69692x);
9			rand2b(x) = 1-2rand(.05393x);
10
11	greg	1.2	noise(x) = noise_1(floor(x),frac(x),ceil(x));
12	greg	1.1
13			noise_1(xl,xd,xu) = hermite(
14			rand2a(xl),
15			rand2a(xu),
16			rand2b(xl),
17			rand2b(xu),
18			xd);