#include "utils.h"

float util::random(float range){
	return float(rand())/RAND_MAX*range;
}

vf2d util::pointTo(vf2d posFrom,vf2d posTo){
	return geom2d::line(posFrom,posTo).vector().norm();
}

float util::angleTo(vf2d posFrom,vf2d posTo){
	return geom2d::line<float>(posFrom,posTo).vector().polar().y;
}

float util::degToRad(float deg){
	return deg*(PI/180);
}

float util::radToDeg(float rad){
	return rad*57.2957795130823208767;
}

float util::lerp(float n1,float n2,double t){
	return n1*(1-t)+n2*t;
}

std::string util::timerStr(float time){
	int seconds=int(time);
	int hours=seconds/3600;
	int minutes=seconds/60;

	std::string timeStr="";
	if(hours>0){
		if(hours<10)timeStr+="0";
		timeStr+=std::to_string(hours)+":";
	}

	if(minutes%60<10)timeStr+="0";
	timeStr+=std::to_string(minutes%60)+":";

	if(seconds%60<10)timeStr+="0";
	timeStr+=std::to_string(seconds%60);

	return timeStr;
}