public Intersection(LineSegment2 line1, LineSegment2 line2) : this()
{
Line1 = line1;
Line2 = line2;
var p = line1.End1;
var q = line2.End1;
var r = line1.ToVector2();
var s = line2.ToVector2();
var denom = r.Cross(s);
if (denom == 0)
{
// The lines are parallel and there's no intersection
HasIntersection = false;
Distance1 = double.NaN;
Distance2 = double.NaN;
return;
}
var t = (q - p).Cross(s) / denom;
var u = (q - p).Cross(r) / denom;
Point = p + r * t;
Distance1 = t;
Distance2 = u;
HasIntersection = true;
}
public Intersection(LineSegment2 line1, LineSegment2 line2)
: this()
{
Line1 = line1;
Line2 = line2;
var p = line1.End1;
var q = line2.End1;
var r = line1.ToVector2();
var s = line2.ToVector2();
var denom = r.Cross(s);
if (denom == 0)
{
// The lines are parallel and there's no intersection
HasIntersection = false;
Distance1 = double.NaN;
Distance2 = double.NaN;
return;
}
var t = (q - p).Cross(s)/denom;
var u = (q - p).Cross(r)/denom;
Point = p + r*t;
Distance1 = t;
Distance2 = u;
HasIntersection = true;
}
/// <summary>
/// Returns the angle formed between this <see cref="LineSegment2"/> and the supplied <paramref name="lineSegment"/>.
/// </summary>
/// <param name="lineSegment"></param>
/// <returns></returns>
public double AngleTo(LineSegment2 lineSegment)
{
return ToVector2().Angle - lineSegment.ToVector2().Angle;
}
/// <summary>
/// Returns the angle formed between this <see cref="LineSegment2"/> and the supplied <paramref name="lineSegment"/>.
/// </summary>
/// <param name="lineSegment"></param>
/// <returns></returns>
public double AngleTo(LineSegment2 lineSegment)
{
return(ToVector2().Angle - lineSegment.ToVector2().Angle);
}