#include "graphics.h"
#include <math.h>
#include <stdlib.h>
#include <dos.h>
#include <windows.h>
#include <iostream>
#include<time.h>
using namespace std;
#define pi 3.14159265359
float x_1, x_2, y_1, y_2;
float xa, xb, xc;
float theta;
int a, b;
int xe(float x){// normalizarea coordonatei
  return((int)((x - x_1) / (x_2 - x_1)*a));
}
int ye(float y){// normalizarea coordonatei y
	return((int)((y_2 - y) / (y_2 - y_1)*b));
}
void axe(){
	setcolor(0);
	outtextxy(xe(x_2) - 20, ye(0) - 20, "x");
	outtextxy(xe(x_2) - 18, ye(0) - 7, ">");
	outtextxy(xe(0) - 15, ye(y_2) + 15, "y");
	outtextxy(xe(0) - 15, ye(0) - 15, "O");
	outtextxy(xe(0) - 1, ye(y_2) , "^");
	line(xe(x_1), ye(0), xe(x_2), ye(0));
	line(xe(0), ye(y_1), xe(0), ye(y_2));
}

float l_x(float theta) {
	float sin_t = sin(theta);
	return 1 / (1 + sin_t*sin_t);
}

float l_y(float theta) {
	float sin_t = sin(theta);
	return 1 * cos(theta) / (1 + sin_t*sin_t);
}

void grafic() {
	float theta;
	float h = 2 * pi / 400;
	float x, y;
	theta = 0;
	float r = 1.f;

	while (-2*pi>= theta <= 2 * pi) {
		x = theta*cos(theta) ;
		y = sin(theta);
		putpixel(xe(x), ye(y), 14);
		theta = theta + h;
		setcolor(3);
	}

}


int main(){
	/*printf("Limitele domeniului orizontal:\n");
	printf("Atentie, x_1<0<x_2  si y_1<0<y_2 \n");
	printf("x_1="); scanf("%f", &x_1); //x_1<0<x_2
	printf("x_2="); scanf("%f", &x_2);
	printf("Limitele domeniului vertical:\n");
	printf("y_1="); scanf("%f", &y_1); //y_1<0<y_2
	printf("y_2="); scanf("%f", &y_2);*/
	initwindow(800, 600, "AXE", 200, 200);
	setbkcolor(20);
	cleardevice();
	//time_t;
	//srand(time(NULL));
	//patrat desenat ale carui laturi au culori diferite
		//setcolor(rand() % 15);
		line(200, 220, 200, 320);
		//setcolor(rand() % 15);
		line(200, 220, 300, 220);
		//setcolor(rand() % 15);
		line(300, 220, 300, 320);
		//setcolor(rand() % 15);
		line(200, 320, 300, 320);
		//setcolor(rand() % 15);

		/*//100 puncte aleatoriu de culori diferite //nu ai treaba cu asta
		for (int i = 0;i <= 100; i++) {
			putpixel(rand() % 200, rand() % 300, rand() % 15);
		}*/

	//cercuri concentrice
	//float raza = 12.4;
	circle(400, 200, 12.4);


	/*a = getmaxx(); //nr. maxim de pixeli pe coord. x
	b = getmaxy();
	axe();
	grafic();*/
	getch();
	closegraph();
	return 0;
}