public bool Parallel(LineEquation line)
{
bool bParallel = false;
if (this.a / this.b == line.a / line.b)
{
bParallel = true;
}
return(bParallel);
}
public LineEquation(LineEquation copiedLine)
{
if (copiedLine == null)
{
throw new ArgumentNullException("copiedLine");
}
this.a = copiedLine.a;
this.b = copiedLine.b;
this.c = copiedLine.c;
}
/**************************************
* Calculate intersection point of two lines
* if two lines are parallel, return null
* ************************************/
public Coordinate IntersecctionWith(LineEquation line)
{
if (line == null)
{
throw new ArgumentNullException("line");
}
Coordinate point = new Coordinate();
double a1 = this.a;
double b1 = this.b;
double c1 = this.c;
double a2 = line.a;
double b2 = line.b;
double c2 = line.c;
if (!(this.Parallel(line))) //not parallen
{
point.X = (c2 * b1 - c1 * b2) / (a1 * b2 - a2 * b1);
point.Y = (a1 * c2 - c1 * a2) / (a2 * b2 - a1 * b2);
}
return(point);
}