package ru.betterend.util;

import java.util.Random;

public class MHelper {
	public static final float PI2 = (float) (Math.PI * 2);
	private static final int ALPHA = 255 << 24;
	public static final Random RANDOM = new Random();

	public static int color(int r, int g, int b) {
		return ALPHA | (r << 16) | (g << 8) | b;
	}

	public static int randRange(int min, int max, Random random) {
		return min + random.nextInt(max - min + 1);
	}
	
	public static double randRange(double min, double max, Random random) {
		return min + random.nextDouble() * (max - min);
	}

	public static float randRange(float min, float max, Random random) {
		return min + random.nextFloat() * (max - min);
	}

	public static byte setBit(byte source, int pos, boolean value) {
		return value ? setBitTrue(source, pos) : setBitFalse(source, pos);
	}

	public static byte setBitTrue(byte source, int pos) {
		source |= 1 << pos;
		return source;
	}

	public static byte setBitFalse(byte source, int pos) {
		source &= ~(1 << pos);
		return source;
	}

	public static boolean getBit(byte source, int pos) {
		return ((source >> pos) & 1) == 1;
	}

	public static int floor(float x) {
		return x < 0 ? (int) (x - 1) : (int) x;
	}

	public static float wrap(float x, float side) {
		return x - floor(x / side) * side;
	}

	public static int floor(double x) {
		return x < 0 ? (int) (x - 1) : (int) x;
	}

	public static int min(int a, int b) {
		return a < b ? a : b;
	}
	
	public static int max(int a, int b) {
		return a > b ? a : b;
	}
}