39 lines
1.9 KiB
C
39 lines
1.9 KiB
C
#ifndef TWO_SIN_H
|
|
#define TWO_SIN_H
|
|
|
|
/* Usage - two_sin();
|
|
*
|
|
* Loads of variables to play with
|
|
*
|
|
*/
|
|
|
|
|
|
// two_sin_pal variables-------------------------------------------------------------------------
|
|
|
|
uint8_t thathue = 140; // You can change the starting hue for other wave.
|
|
uint8_t thatrot = 0; // You can change how quickly the hue rotates for the other wave. Currently 0.
|
|
int8_t thatspeed = 4; // You can change the speed, and use negative values.
|
|
int thatphase = 0; // Phase change value gets calculated.
|
|
uint8_t thatcutoff = 192; // You can change the cutoff value to display that wave. Lower value = longer wave.
|
|
|
|
|
|
void two_sin() { // This is the heart of this program. Sure is short.
|
|
|
|
if (thisdir == 0) {thisphase += thisspeed; thatphase += thatspeed;}
|
|
else {thisphase -= thisspeed; thatphase -= thatspeed;}
|
|
|
|
thishue = thishue + thisrot; // Hue rotation is fun for thiswave.
|
|
thathue = thathue + thatrot; // It's also fun for thatwave.
|
|
|
|
for (int k=0; k<NUM_LEDS-1; k++) {
|
|
int thisbright = qsuba(cubicwave8((k*allfreq)+thisphase), thiscutoff); // qsub sets a minimum value called thiscutoff. If < thiscutoff, then bright = 0. Otherwise, bright = 128 (as defined in qsub)..
|
|
int thatbright = qsuba(cubicwave8((k*allfreq)+128+thatphase), thatcutoff); // This wave is 180 degrees out of phase (with the value of 128).
|
|
|
|
leds[k] = CHSV(thishue, thissat, thisbright); // Assigning hues and brightness to the led array.
|
|
leds[k] += CHSV(thathue, thissat, thatbright);
|
|
|
|
}
|
|
} // two_sin()
|
|
|
|
#endif
|