///////////////////////////////////////////////////////////////////////////////
// Linear function
//
///////////////////////////////////////////////////////////////////////////////
GEM_EXTERN void linearFunc(float x, float *ret, int numDimen, int npnts, float *pnts)
{
int nspans = npnts - 1;
if (nspans < 1) // illegal
return;
x = FLOAT_CLAMP(x) * nspans;
int span = static_cast<int>(x);
// find the correct 2-point span of the linear list
if (span >= nspans)
span = nspans;
x -= span;
pnts += (span * numDimen);
for (int i = 0; i < numDimen; i++)
{
ret[i] = pnts[0 * numDimen] * (1.f - x) + pnts[1 * numDimen] * x;
pnts++; // advance to the next dimension
}
}
GEM_EXTERN void splineFunc(double x, double *ret, int numDimen, int nknots, double *knot)
{
int nspans = nknots - 4;
if (nspans < 0) // illegal case
return;
// find the correct 4-point span of the spline
x = FLOAT_CLAMP(x) * nspans;
int span = static_cast<int>(x);
x -= span; // get decimal part of span
knot += (span * numDimen);
// Evalute the span cubic at x using Horner's rule
double c0, c1, c2, c3;
for (int i = 0; i < numDimen; i++)
{
c3 = CR00*knot[0 * numDimen]
+ CR01*knot[1 * numDimen]
+ CR02*knot[2 * numDimen]
+ CR03*knot[3 * numDimen];
c2 = CR10*knot[0 * numDimen]
+ CR11*knot[1 * numDimen]
+ CR12*knot[2 * numDimen]
+ CR13*knot[3 * numDimen];
c1 = CR20*knot[0 * numDimen]
+ CR21*knot[1 * numDimen]
+ CR22*knot[2 * numDimen]
+ CR23*knot[3 * numDimen];
c0 = CR30*knot[0 * numDimen]
+ CR31*knot[1 * numDimen]
+ CR32*knot[2 * numDimen]
+ CR33*knot[3 * numDimen];
ret[i] = ((c3*x + c2)*x + c1)*x + c0;
knot++; // advance to the next dimension
}
}
void pix_hit :: min_distanceCallback(void *data, t_floatarg val)
{
GetMyClass(data)->set_min_distance(FLOAT_CLAMP(val));
}
void pix_hit :: minimumCallback(void *data, t_floatarg val)
{
int n = static_cast<int>(FLOAT_CLAMP(val));
GetMyClass(data)->minimum(n);
}
void pix_hit :: thresholdCallback(void *data, t_floatarg val)
{
GetMyClass(data)->threshold(FLOAT_CLAMP(val));
}
void clamp<quint16>(float* r, float* g, float* b)
{
FLOAT_CLAMP(r);
FLOAT_CLAMP(g);
FLOAT_CLAMP(b);
}
static void hsv2rgb_float(t_hsv2rgb *x, t_floatarg h, t_floatarg s, t_floatarg v)
{
t_atom argv[3];
float r=0, g=0, b=0;
h = FLOAT_CLAMP(h);
s = FLOAT_CLAMP(s);
v = FLOAT_CLAMP(v);
// convert hue to degrees
h *= 360.f;
if (s == 0.0) // black and white
{
r = g = b = v;
}
else
{
if (h == 360.0) // 360 == 0 degrees
h = 0.0f;
h /= 60.0f; // hue is now [0, 6]
{
int i = (int)floor(h);
float f = h - i; // f is the fractional part of h
float p = v * (1 - s);
float q = v * (1 - s * f);
float t = v * (1 - s * (1 - f));
switch (i)
{
case 0:
r = v;
g = t;
b = p;
break;
case 1:
r = q;
g = v;
b = p;
break;
case 2:
r = p;
g = v;
b = t;
break;
case 3:
r = p;
g = q;
b = v;
break;
case 4:
r = t;
g = p;
b = v;
break;
case 5:
r = v;
g = p;
b = q;
break;
}
}
}
SETFLOAT(&argv[0], r);
SETFLOAT(&argv[1], g);
SETFLOAT(&argv[2], b);
outlet_list(x->t_out1, &s_list, 3, argv);
}
void pix_data :: yPos(t_float f)
{
m_position[1]=FLOAT_CLAMP(f);
}
