knee 2
3-piece polygonal curve, in the shape of a double knee
Inlets
frac32 in
frac32 x position at which the first knee happens. You should have x1<x2
frac32 constant output before first knee
frac32 x position at which the second knee happens. You should have x1<x2
frac32 costant output after second knee
Outlets
frac32 out
Parameters
frac32.s.map x position at which the first knee happens. You should have x1<x2
frac32.s.map constant output before first knee
frac32.s.map x position at which the second knee happens. You should have x1<x2
frac32.s.map constant output after second knee
int32_t y1 = inlet_y1 + param_y1;
int32_t x1 = inlet_x1 + param_x1;
int32_t y2 = inlet_y2 + param_y2;
int32_t x2 = inlet_x2 + param_x2;
int32_t percent_Q27 =
134217728.0f * ((float)(inlet_in - x1)) / ((float)(x2 - x1));
int32_t y = ___SMMLA(y2 - y1 << 2, percent_Q27 << 3, y1);
if (inlet_in < x1)
outlet_out = y1;
else if (inlet_in > x2)
outlet_out = y2;
else
outlet_out = y;