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funcs.h
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/*
This file is part of "Filter Foundry", a filter plugin for Adobe Photoshop
Copyright (C) 2003-2009 Toby Thain, [email protected]
Copyright (C) 2018-2021 Daniel Marschall, ViaThinkSoft
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <math.h>
#ifndef M_PI
#define M_PI 3.14159265358979323846264338327
#endif
#include "symtab.h"
enum{ COSTABSIZE=1024,TANTABSIZE=512 };
void init_trigtab();
extern double costab[],tantab[];
#define DEG2RAD(x) ((x)*M_PI/180.)
#define RAD2DEG(x) ((x)*180./M_PI)
/* [trig functions return] an integer between -512 and 512, inclusive (Windows)
or -1024 and 1024, inclusive (Mac OS) */
#ifdef WIN_ENV
#define TRIGAMP 512
#else
#define TRIGAMP 1024
#endif
#define FFANGLE(v) ((v)*M_PI/512.)
#define TO_FFANGLE(v) ((v)*512./M_PI)
#define INITRANDSEED() srand(691204)
value_type ff_src(value_type x,value_type y,value_type z);
value_type ff_rad(value_type d,value_type m,value_type z);
value_type ff_ctl(value_type i);
value_type ff_val(value_type i,value_type a,value_type b);
value_type ff_map(value_type i,value_type n);
value_type ff_min(value_type a,value_type b);
value_type ff_max(value_type a,value_type b);
value_type ff_abs(value_type a);
value_type ff_add(value_type a,value_type b,value_type c);
value_type ff_sub(value_type a,value_type b,value_type c);
value_type ff_dif(value_type a,value_type b);
value_type ff_rnd(value_type a,value_type b);
value_type ff_mix(value_type a,value_type b,value_type n,value_type d);
value_type ff_scl(value_type a,value_type il,value_type ih,
value_type ol,value_type oh);
value_type ff_sqr(value_type x);
value_type ff_sin(value_type x);
value_type ff_cos(value_type x);
value_type ff_tan(value_type x);
value_type ff_r2x(value_type d,value_type m);
value_type ff_r2y(value_type d,value_type m);
value_type ff_c2d(value_type d, value_type m);
value_type ff_c2d_negated(value_type d, value_type m); // not a function!
value_type ff_c2m(value_type d,value_type m);
value_type ff_get(value_type i);
value_type ff_put(value_type v,value_type i);
value_type ff_cnv(value_type m11,value_type m12,value_type m13,
value_type m21,value_type m22,value_type m23,
value_type m31,value_type m32,value_type m33,
value_type d );
value_type ff_rst(value_type seed);