#include <cstdlib>
#include "canvas.h"
using namespace std;

/*
This program consists of the files point.h, line.h, canvas.h, canvas.C, main.C.
The output of this program is in the file file.html.
*/

int main()
{
	canvas c(300, 150);	//Make only one canvas.  Origin at upper left.

	point A(10, 10);
	point B(50, 50);
	point C(50, 10);
	point D(90, 50);

	try {
		line l(A, B);
		line m(C, D);
		point E(l, m);			//intersection of two lines

		point F = E + offset(100, 0);	//100 pixels to right of point E
		line n(E, F);

		c << black << l << m << red << n;
	}

	catch (int i) {
		cerr << "parallel lines have no unique point of intersection\n";
		return EXIT_FAILURE;
	}

	return EXIT_SUCCESS;
}