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/*
* Copyright (c) 1997-1999 Mark Danks.
* For information on usage and redistribution, and for a DISCLAIMER OF ALL
* WARRANTIES, see the file, "LICENSE.txt" in this distribution.
*/
#include "m_pd.h"
/* -------------------------- tripleLine ------------------------------ */
/* instance structure */
static t_class *tripleLine_class;
typedef struct _tripleLine
{
t_object x_obj; /* obligatory object header */
t_clock *clock;
float grain;
float destTime;
float curTime;
float curVal[3];
float destVal[3];
float stepVal[3];
t_outlet *t_out1; /* the outlet */
} t_tripleLine;
static void tripleTick(t_tripleLine *x)
{
t_atom argv[3];
int i;
x->curTime += x->grain;
if (x->curTime >= x->destTime)
{
for (i = 0; i < 3; i++)
{
x->curVal[i] = x->destVal[i];
SETFLOAT((&argv[i]), x->curVal[i]);
}
}
else
{
for (i = 0; i < 3; i++)
{
x->curVal[i] += x->stepVal[i];
SETFLOAT((&argv[i]), x->curVal[i]);
}
clock_delay(x->clock, x->grain);
}
outlet_list(x->t_out1, &s_list, 3, argv);
}
static void setLineParameters(t_tripleLine *x, t_symbol *s, int argc, t_atom *argv)
{
float numCounts;
int i;
t_atom newargv[3];
float time = x->destTime;
clock_unset(x->clock);
if (argc == 4) time = atom_getfloat(&argv[3]);
else if (argc != 3)
{
error("tripleLine: requires 3 or 4 args");
return;
}
x->destTime = time;
numCounts = time / x->grain;
if (x->destTime <= 0.)
{
x->curTime = 0;
for (i = 0; i < 3; i++)
{
x->curVal[i] = x->destVal[i] = atom_getfloat(&argv[i]);
SETFLOAT((&newargv[i]), x->curVal[i]);
}
outlet_list(x->t_out1, &s_list, 3, newargv);
return;
}
else
{
for (i = 0; i < 3; i++)
{
x->destVal[i] = atom_getfloat(&argv[i]);
x->stepVal[i] = (x->destVal[i] - x->curVal[i]) / numCounts;
SETFLOAT((&newargv[i]), x->curVal[i]);
}
}
x->curTime = 0;
clock_delay(x->clock, x->grain);
outlet_list(x->t_out1, &s_list, 3, newargv);
}
static void tripleLine_free(t_tripleLine *x)
{
clock_free(x->clock);
}
static void *tripleLine_new(t_floatarg time, t_floatarg grain) /* init vals in struc */
{
int i;
t_tripleLine *x = (t_tripleLine *)pd_new(tripleLine_class);
x->curTime = 0;
x->destTime = time;
x->clock = clock_new(x, (t_method)tripleTick);
for (i = 0; i < 3; i++)
{
x->curVal[i] = x->destVal[i] = x->stepVal[i] = 0.;
}
if (grain <= 0) grain = 50;
x->grain = (float)grain;
x->t_out1 = outlet_new(&x->x_obj, 0);
return(x);
}
void tripleLine_setup(void)
{
tripleLine_class = class_new(gensym("tripleLine"), (t_newmethod)tripleLine_new,
(t_method)tripleLine_free, sizeof(t_tripleLine), 0, A_DEFFLOAT, A_DEFFLOAT, 0);
class_addmethod(tripleLine_class, (t_method)setLineParameters,
&s_list, A_GIMME, A_NULL);
#if PD_MINOR_VERSION < 37
class_sethelpsymbol(tripleLine_class, gensym("tripleLine-help.pd"));
#endif
}
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