MEOOscillate.cpp

/*
  G35: An Arduino library for GE Color Effects G-35 holiday lights.
  Copyright © 2011 The G35 Authors. Use, modification, and distribution are
  subject to the BSD license as described in the accompanying LICENSE file.

  By Mike Tsao <http://github.com/sowbug>.

  and Mark Ortiz
  and Adafruit

  See README for complete attributions.
*/

#include <MEOOscillate.h>

MEOOscillate::MEOOscillate(MEOG35& g35, uint8_t pattern)
    : MEOLightProgram(g35, pattern), intensity_(0), pattern_(pattern), colorMain_(0), wait_(5), oscillations_(10), decay_(0.2), step_(0)
{
	//g35_.fill_color(0, light_count_, MEOG35::MAX_INTENSITY, COLOR_BLACK);
}

uint32_t MEOOscillate::Do()
{
    switch (pattern_ % 4)
    {
    case 0:
        colorMain_ = COLOR(12,12,12);
        break;
    case 1:
        colorMain_ = COLOR(0,0,15);
        break;
    case 2:
        colorMain_ = COLOR(15,0,0);
        break;
    case 3:
        colorMain_ = COLOR(0,15,0);
        break;
    }

	float freq = 1; //oscillations per second 
	int amplitude = (light_count_ / 2) - 1; 
	int y;

	float time = float(step_) / 100.0;
	y = (amplitude * sin(freq * time * 2 * PI) / exp(decay_ * time)) + (light_count_ / 2);
	
	if (step_ == 0)
	{
		g35_.fill_color(0, light_count_, MEOG35::MAX_INTENSITY, COLOR_BLACK);
	}
	
	g35_.fill_color(y, 1, MEOG35::MAX_INTENSITY, colorMain_);
	delay(wait_);
	g35_.fill_color(y, 1, MEOG35::MAX_INTENSITY, COLOR_BLACK);

	step_++;
	if (step_ == oscillations_ * 100)
	{
		step_ = 0;
	}
    return bulb_frame_;
}