public bool Contains(Point2LR point)
{
if (point.X > LongRational.Max(this.start.X, this.end.X) || point.X < LongRational.Min(this.start.X, this.end.X) || (point.Y > LongRational.Max(this.start.Y, this.end.Y) || point.Y < LongRational.Min(this.start.Y, this.end.Y)))
{
return(false);
}
if (this.start == this.end)
{
return(true);
}
Vector2LR delta = this.GetDelta();
Vector2LR u = point - this.start;
Vector2LR v = new Vector2LR(-delta.Y, delta.X);
if (!Vector2LR.DotProduct(u, v).IsZero)
{
return(false);
}
LongRational longRational = Vector2LR.DotProduct(u, delta);
if (longRational.IsNegative)
{
return(false);
}
LongRational lengthSquared = delta.GetLengthSquared();
return(!(longRational > lengthSquared));
}
public LongRational GetDistanceSquared(Point2LR point)
{
if (this.direction.IsZero)
{
return((point - this.origin).GetLengthSquared());
}
return((Vector2LR.DotProduct(point - this.origin, this.direction) * this.direction / this.direction.GetLengthSquared() + this.origin - point).GetLengthSquared());
}
public Point2LR GetClosestPoint(Point2LR point)
{
Vector2LR u = point - this.start;
Vector2LR v = this.end - this.start;
LongRational lengthSquared = v.GetLengthSquared();
LongRational longRational = Vector2LR.DotProduct(u, v);
return(longRational.IsNegative || !(longRational <= lengthSquared) ? (longRational.IsNegative ? this.start : this.end) : longRational / lengthSquared * v + this.start);
}
public LongRational GetDistanceSquared(Point2LR point)
{
Vector2LR u = point - this.start;
Vector2LR v = this.end - this.start;
LongRational lengthSquared = v.GetLengthSquared();
LongRational longRational = Vector2LR.DotProduct(u, v);
return(longRational.IsNegative || !(longRational <= lengthSquared) ? (!longRational.IsNegative ? (this.end - point).GetLengthSquared() : (this.start - point).GetLengthSquared()) : (longRational / lengthSquared * v + this.start - point).GetLengthSquared());
}
public bool Contains(Point2LR p)
{
if (this.direction.IsZero)
{
return(p == this.origin);
}
Vector2LR v = new Vector2LR(-this.direction.Y, this.direction.X);
return(Vector2LR.DotProduct(p - this.origin, v).IsZero);
}
public bool method_1(Point2LR point)
{
LongRational longRational = Vector2LR.DotProduct(point - this.point2LR_0, this.vector2LR_0);
if (!longRational.IsNegative)
{
return(longRational <= this.longRational_0);
}
return(false);
}
public LongRational GetNormalizedProjection(Point2LR point)
{
if (this.start == this.end)
{
return(LongRational.NaN);
}
Vector2LR delta = this.GetDelta();
return(Vector2LR.DotProduct(point - this.start, delta) / delta.GetLengthSquared());
}
public static bool Intersects(Ray2LR a, Segment2LR b)
{
if (a.direction.IsZero)
{
return(b.Contains(a.origin));
}
Vector2LR v = new Vector2LR(-a.Direction.Y, a.Direction.X);
if (Vector2LR.DotProduct(b.Start - a.Origin, v).IsPositive == Vector2LR.DotProduct(b.End - a.Origin, v).IsPositive)
{
return(false);
}
if (b.Start == b.End)
{
return(a.Contains(b.Start));
}
Vector2LR delta = b.GetDelta();
LongRational longRational1 = a.Direction.X * delta.Y - a.Direction.Y * delta.X;
if (longRational1.IsZero)
{
return(false);
}
Vector2LR u = b.Start - a.Origin;
LongRational longRational2 = Vector2LR.CrossProduct(u, delta);
if (longRational1.IsPositive)
{
if (longRational2.IsNegative)
{
return(false);
}
}
else if (longRational2.IsPositive)
{
return(false);
}
LongRational longRational3 = Vector2LR.CrossProduct(u, a.Direction);
if (longRational1.IsPositive)
{
if (longRational3.IsNegative || longRational3 > longRational1)
{
return(false);
}
}
else if (longRational3.IsPositive || longRational3 < longRational1)
{
return(false);
}
LongRational longRational4 = longRational3 / longRational1;
LongRational longRational5 = longRational2 / longRational1;
return(true);
}
public bool ContainsProjection(Point2LR point)
{
Vector2LR delta = this.GetDelta();
LongRational longRational = Vector2LR.DotProduct(point - this.start, delta);
if (longRational.IsNegative)
{
return(false);
}
LongRational lengthSquared = delta.GetLengthSquared();
return(!(longRational.Square() > lengthSquared));
}
public bool Contains(Point2LR p)
{
if (this.direction.IsZero)
{
return(p == this.origin);
}
Vector2LR v = new Vector2LR(-this.direction.Y, this.direction.X);
Vector2LR u = p - this.origin;
if (!Vector2LR.DotProduct(u, v).IsZero)
{
return(false);
}
return(!Vector2LR.DotProduct(u, this.direction).IsNegative);
}
public Point2LR GetClosestPoint(Point2LR point)
{
return(Vector2LR.DotProduct(point - this.origin, this.direction) / this.direction.GetLengthSquared() * this.direction + this.origin);
}
public static bool GetIntersectionCoefficients(
Ray2LR a,
Segment2LR b,
out LongRational?p,
out LongRational?q,
out bool areParallel)
{
if (a.direction.IsZero)
{
areParallel = false;
p = new LongRational?();
bool flag;
if (flag = b.Contains(a.origin))
{
Vector2LR delta = b.GetDelta();
q = new LongRational?(Vector2LR.DotProduct(a.origin - b.Start, delta) / delta.GetLengthSquared());
}
else
{
q = new LongRational?();
}
return(flag);
}
Vector2LR v = new Vector2LR(-a.direction.Y, a.direction.X);
Vector2LR u = b.Start - a.Origin;
LongRational longRational1 = Vector2LR.DotProduct(u, v);
LongRational longRational2 = Vector2LR.DotProduct(b.End - a.Origin, v);
if (longRational1.IsPositive && longRational2.IsPositive || longRational1.IsNegative && longRational2.IsNegative)
{
p = new LongRational?();
q = new LongRational?();
areParallel = false;
return(false);
}
Vector2LR delta1 = b.GetDelta();
if (delta1.IsZero)
{
areParallel = false;
p = new LongRational?(Vector2LR.DotProduct(u, a.direction) / a.direction.GetLengthSquared());
q = new LongRational?(LongRational.Zero);
return(true);
}
LongRational longRational3 = a.Direction.X * delta1.Y - a.Direction.Y * delta1.X;
if (longRational3.IsZero)
{
p = new LongRational?();
q = new LongRational?();
areParallel = true;
return(true);
}
areParallel = false;
LongRational longRational4 = Vector2LR.CrossProduct(u, delta1);
if (longRational3.IsPositive)
{
if (longRational4.IsNegative)
{
p = new LongRational?();
q = new LongRational?();
return(false);
}
}
else if (longRational4.IsPositive)
{
p = new LongRational?();
q = new LongRational?();
return(false);
}
LongRational longRational5 = Vector2LR.CrossProduct(u, a.Direction);
if (longRational3.IsPositive)
{
if (longRational5.IsNegative || longRational5 > longRational3)
{
p = new LongRational?();
q = new LongRational?();
return(false);
}
}
else if (longRational5.IsPositive || longRational5 < longRational3)
{
p = new LongRational?();
q = new LongRational?();
return(false);
}
p = new LongRational?(longRational4 / longRational3);
q = new LongRational?(longRational5 / longRational3);
return(true);
}
public static bool GetIntersectionCoefficients(
Ray2LR a,
Ray2LR b,
out LongRational?p,
out LongRational?q,
out bool parallel)
{
if (a.direction.IsZero)
{
if (b.direction.IsZero)
{
bool flag = a.origin == b.origin;
parallel = false;
if (flag)
{
p = new LongRational?(LongRational.Zero);
q = new LongRational?(LongRational.Zero);
}
else
{
p = new LongRational?();
q = new LongRational?();
}
return(flag);
}
parallel = false;
p = new LongRational?();
bool flag1;
if (flag1 = b.Contains(a.origin))
{
q = new LongRational?(Vector2LR.DotProduct(a.origin - b.origin, b.direction) / b.direction.GetLengthSquared());
}
else
{
q = new LongRational?();
}
return(flag1);
}
if (b.Direction.IsZero)
{
parallel = false;
q = new LongRational?();
bool flag;
if (flag = a.Contains(b.origin))
{
p = new LongRational?(Vector2LR.DotProduct(b.origin - a.origin, a.direction) / a.direction.GetLengthSquared());
}
else
{
p = new LongRational?();
}
return(flag);
}
LongRational longRational1 = a.Direction.X * b.Direction.Y - a.Direction.Y * b.Direction.X;
if (longRational1.IsZero)
{
parallel = true;
if (!a.Contains(b.origin))
{
b.Contains(a.origin);
}
p = new LongRational?();
q = new LongRational?();
return(true);
}
parallel = false;
Vector2LR u = b.origin - a.origin;
LongRational longRational2 = Vector2LR.CrossProduct(u, b.direction);
if (longRational1.IsPositive)
{
if (longRational2.IsNegative)
{
p = new LongRational?();
q = new LongRational?();
return(false);
}
}
else if (longRational2.IsPositive)
{
p = new LongRational?();
q = new LongRational?();
return(false);
}
LongRational longRational3 = Vector2LR.CrossProduct(u, a.direction);
if (longRational1.IsPositive)
{
if (longRational3.IsNegative)
{
p = new LongRational?();
q = new LongRational?();
return(false);
}
}
else if (longRational3.IsPositive)
{
p = new LongRational?();
q = new LongRational?();
return(false);
}
p = new LongRational?(longRational2 / longRational1);
q = new LongRational?(longRational3 / longRational1);
return(true);
}
public static bool GetIntersectionCoefficients(
Line2LR a,
Line2LR b,
out LongRational?p,
out LongRational?q,
out bool parallel)
{
if (a.direction.IsZero)
{
if (b.direction.IsZero)
{
bool flag = a.origin == b.origin;
parallel = false;
if (flag)
{
p = new LongRational?(LongRational.Zero);
q = new LongRational?(LongRational.Zero);
}
else
{
p = new LongRational?();
q = new LongRational?();
}
return(flag);
}
parallel = false;
p = new LongRational?();
bool flag1;
if (flag1 = b.Contains(a.origin))
{
q = new LongRational?(Vector2LR.DotProduct(a.origin - b.origin, b.direction) / b.direction.GetLengthSquared());
}
else
{
q = new LongRational?();
}
return(flag1);
}
if (b.Direction.IsZero)
{
parallel = false;
q = new LongRational?();
bool flag;
if (flag = a.Contains(b.origin))
{
p = new LongRational?(Vector2LR.DotProduct(b.origin - a.origin, a.direction) / a.direction.GetLengthSquared());
}
else
{
p = new LongRational?();
}
return(flag);
}
LongRational longRational = a.Direction.X * b.Direction.Y - a.Direction.Y * b.Direction.X;
if (longRational.IsZero)
{
parallel = true;
a.Contains(b.origin);
p = new LongRational?();
q = new LongRational?();
return(true);
}
parallel = false;
Vector2LR u = b.Origin - a.Origin;
p = new LongRational?(Vector2LR.CrossProduct(u, b.Direction) / longRational);
q = new LongRational?(Vector2LR.CrossProduct(u, a.Direction) / longRational);
return(true);
}
public bool method_0(Point2LR p)
{
return(Vector2LR.DotProduct(p - this.point2LR_0, new Vector2LR(-this.vector2LR_0.Y, this.vector2LR_0.X)).IsZero);
}
