using UnityEngine;
using System.Collections;
using System;

public static class PatternArrayGenerator {

	/**
	 * Generate pattern array. The first frame is always set to 1
	 */
	public static int[] GetPatternArray(int hz, int duration, int fps) {
		int[] patternArray = new int[fps * duration];

		if (hz == 0)
			return patternArray;

		int frameToSkip = fps / hz;

		for (int i = 0; i < patternArray.Length; i+=frameToSkip) {
			patternArray [i] = 1;
		}

		return patternArray;
	}

	public static int[] GetPatternArraySineWave(double frequency, int duration, double fps, bool usePrecisePi) {
		double PI;
		if (usePrecisePi)
			PI = 3.14159265358979323846f;
		else
			PI = 3.14;

		int totalFrames = (int) (fps * duration);
		double[] stim = new double[totalFrames];
		int[] stim2 = new int[totalFrames];

		if (frequency == 0)
			return stim2;

		for (int i = 0, j=1 ; i < stim.Length ; i++, j++) {
			stim[i] = (double)((2 * PI * frequency) * (double)(j/(double)fps));
			stim2[i] = (int) Math.Sign(Math.Sin(stim[i]));
//#if DEBUG
//			print("stim[" + i + "]=" + stim2[i] + " (" + stim[i] + ") [" + Math.Sin(stim[i]) + "]");
//#endif
		}

//		stim2 [0] = 555;
//		stim2 [stim.Length - 1] = 999;

//		Logger.Print (stim2.ToString());

		return stim2;
	}

	public static int[] GetPatternArraySineWave(double frequency, double duration, double fps, bool usePrecisePi) {
		double PI;
		if (usePrecisePi)
			PI = 3.14159265358979323846f;
		else
			PI = 3.14;

		int totalFrames = (int) (fps * duration);
		double[] stim = new double[totalFrames];
		int[] stim2 = new int[totalFrames];

		if (frequency == 0)
			return stim2;

		for (int i = 0, j=1 ; i < stim.Length ; i++, j++) {
			stim[i] = (double)((2 * PI * frequency) * (double)(j/(double)fps));
			stim2[i] = (int) Math.Sign(Math.Sin(stim[i]));
			#if DEBUG
			//			print("stim[" + i + "]=" + stim2[i] + " (" + stim[i] + ") [" + Math.Sin(stim[i]) + "]");
			#endif
		}	

		return stim2;
	}
}