public Line2D(Vector2 pointA, Vector2 pointB) {
this.PointA = pointA;
this.PointB = pointB;
Vector = this.PointB - this.PointA;
Equation = new LineEquation(PointA, PointB);
SlopeEquation = new SlopeInterceptEquation(PointA, PointB);
}
protected virtual void Init() {
Vector = this.PointB - this.PointA;
Equation = new LineEquation(PointA, PointB);
SlopeEquation = new SlopeInterceptEquation(PointA, PointB);
}