/* For information on usage and redistribution, and for a DISCLAIMER OF ALL
* WARRANTIES, see the file, "LICENSE.txt," in this distribution.

iemlib2 written by Thomas Musil, Copyright (c) IEM KUG Graz Austria 2000 - 2003 */

#ifdef NT
#pragma warning( disable : 4244 )
#pragma warning( disable : 4305 )
#endif

#include "m_pd.h"
#include "iemlib.h"
#include <stdlib.h>
#include <string.h>
#include <stdio.h>
#include <math.h>

/* ------------------------ exp_inc ---------------------------- */
static t_class *exp_inc_class;

typedef struct _exp_inc
{
    t_object x_obj;
    float    x_initialval;
    float    x_currentval;
    float    x_mulfactor;
    float    x_addincrement;
    float    x_min;
    float    x_max;
} t_exp_inc;

static void exp_inc_bang(t_exp_inc *x)
{                                                   
    outlet_float(x->x_obj.ob_outlet, x->x_currentval);
    x->x_currentval = x->x_currentval * x->x_mulfactor + x->x_addincrement;
    if(x->x_currentval < x->x_min)
        x->x_currentval = x->x_min;
    if(x->x_currentval > x->x_max)
        x->x_currentval = x->x_max;
}

static void exp_inc_reset(t_exp_inc *x)
{
    x->x_currentval = x->x_initialval;
    if(x->x_currentval < x->x_min)
        x->x_currentval = x->x_min;
    if(x->x_currentval > x->x_max)
        x->x_currentval = x->x_max;
}

static void exp_inc_float(t_exp_inc *x, t_floatarg f)
{
    x->x_initialval = (float)f;
    x->x_currentval = x->x_initialval;
    if(x->x_currentval < x->x_min)
        x->x_currentval = x->x_min;
    if(x->x_currentval > x->x_max)
        x->x_currentval = x->x_max;
}

static void exp_inc_ft1(t_exp_inc *x, t_floatarg f)
{
    x->x_mulfactor = 1.0 + 0.01*(float)f;
}

static void exp_inc_ft2(t_exp_inc *x, t_floatarg f)
{
    x->x_addincrement = (float)f;
}

static void exp_inc_ft3(t_exp_inc *x, t_floatarg f)
{
    x->x_min = (float)f;
    if(x->x_currentval < x->x_min)
        x->x_currentval = x->x_min;
}

static void exp_inc_ft4(t_exp_inc *x, t_floatarg f)
{
    x->x_max = (float)f;
    if(x->x_currentval > x->x_max)
        x->x_currentval = x->x_max;
}

static void exp_inc_list(t_exp_inc *x, t_symbol *s, int ac, t_atom *av)
{
    if((ac == 5)&&IS_A_FLOAT(av,0)&&IS_A_FLOAT(av,1)&&IS_A_FLOAT(av,2)
      &&IS_A_FLOAT(av,3)&&IS_A_FLOAT(av,4))
    {
        exp_inc_ft4(x, atom_getfloatarg(4, ac, av));
	exp_inc_ft3(x, atom_getfloatarg(3, ac, av));
        exp_inc_ft2(x, atom_getfloatarg(2, ac, av));
	exp_inc_ft1(x, atom_getfloatarg(1, ac, av));
        exp_inc_float(x, atom_getfloatarg(0, ac, av));
    }
}

static void *exp_inc_new(t_symbol *s, int ac, t_atom *av)
{
    t_exp_inc *x = (t_exp_inc *)pd_new(exp_inc_class);

    x->x_currentval = 10.0;
    x->x_mulfactor = 1.0;
    x->x_addincrement = 0.0;
    x->x_min = 0.0;
    x->x_max = 1000.0;
    if((ac == 5)&&IS_A_FLOAT(av,0)&&IS_A_FLOAT(av,1)&&IS_A_FLOAT(av,2)
       &&IS_A_FLOAT(av,3)&&IS_A_FLOAT(av,4))
    {
	exp_inc_ft4(x, atom_getfloatarg(4, ac, av));
	exp_inc_ft3(x, atom_getfloatarg(3, ac, av));
        exp_inc_ft2(x, atom_getfloatarg(2, ac, av));
	exp_inc_ft1(x, atom_getfloatarg(1, ac, av));
        exp_inc_float(x, atom_getfloatarg(0, ac, av));
    }
    outlet_new(&x->x_obj, &s_float);
    inlet_new(&x->x_obj, &x->x_obj.ob_pd, &s_float, gensym("ft1"));
    inlet_new(&x->x_obj, &x->x_obj.ob_pd, &s_float, gensym("ft2"));
    inlet_new(&x->x_obj, &x->x_obj.ob_pd, &s_float, gensym("ft3"));
    inlet_new(&x->x_obj, &x->x_obj.ob_pd, &s_float, gensym("ft4"));
    return (x);
}

void exp_inc_setup(void)
{
    exp_inc_class = class_new(gensym("exp_inc"), (t_newmethod)exp_inc_new,
    	0, sizeof(t_exp_inc), 0, A_GIMME, 0);
    class_addbang(exp_inc_class, exp_inc_bang);
    class_addlist(exp_inc_class, (t_method)exp_inc_list);
    class_addmethod(exp_inc_class, (t_method)exp_inc_reset, gensym("reset"), 0);
    class_addfloat(exp_inc_class, (t_method)exp_inc_float);
    class_addmethod(exp_inc_class, (t_method)exp_inc_ft1, gensym("ft1"), A_FLOAT, 0);
    class_addmethod(exp_inc_class, (t_method)exp_inc_ft2, gensym("ft2"), A_FLOAT, 0);
    class_addmethod(exp_inc_class, (t_method)exp_inc_ft3, gensym("ft3"), A_FLOAT, 0);
    class_addmethod(exp_inc_class, (t_method)exp_inc_ft4, gensym("ft4"), A_FLOAT, 0);
    class_sethelpsymbol(exp_inc_class, gensym("iemhelp/help-exp_inc"));
}