/* Class that represents a line in 2-D cartesian space using the formula a*x + b*y + c = 0
 * The class will store a, b, c and allow you to adjust these and test to see if a given point is on the line or not.
 * The toString returns a*x + b*y + c = 0 where a, b, c are filled in.  The class has typical accessors and mutators. */
 
 public class Line
 {
 	private int a, b, c;			// the three coefficients for our equation of a line (ax + by + c = 0)
 	
 	public Line()					// initial line, we do not know any of the coefficients
 	{
 		a = b = c = 0;
 	}
 	
 	public Line(int newA, int newB, int newC)		// initial line, we know all 3 coefficients
 	{
 		a = newA; b = newB; c = newC;
 	}
 	
 	public int getA() { return a; }				// accessors
 	public int getB() { return b; }
 	public int getC() { return c; }
 	public void setA(int newA) { a = newA; }	// mutators
 	public void setB(int newB) { b = newB; }
 	public void setC(int newC) { c = newC; } 	
 		
 	public boolean onLine(int x, int y)			// a point <x, y> is on our line if ax + by + c = 0
 	{
 		if(a*x+b*y+c==0) return true;
 		else return false;
 	}
 	
 	public String toString()					// return the equation for our line
 	{
 		return "" + a + " * x + " + b + " * y + " + c + " = 0";
 	}
 }