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