Struct: RT.Util.Geometry.EdgeD

• Assembly: RT.Util.Core, Version=1.0.0.9999, Culture=neutral, PublicKeyToken=null
• Namespace: RT.Util.Geometry
• Show inherited types...
  Inherits from:

  • System.ValueType
    • object
• Show implemented interfaces...
  Implements:

  • System.IEquatable<RT.Util.Geometry.EdgeD> (directly)

Summary

A double-precision class encapsulating a straight line segment connecting two points.

Constructors

EdgeD(PointD start, PointD end)	Initialises a line segment using the specified start and end point.
EdgeD(double x1, double y1, double x2, double y2)	Initialises a line segment using the start point (X1, Y1) and the end point (X2, Y2).
EdgeD(PointD start, double angle)	Initialises a line segment starting at the specified point. The ending point is 1 unit away at the specified angle.

Instance methods

bool	ContainsPoint(PointD point)	Returns true if the specified point lies exactly on this edge. Accurate results are not guaranteed on edges which are not axis-aligned.
double	CrossZ(PointD point)	Returns the Z component of the cross product of this edge, treated as a vector from EdgeD.Start to EdgeD.End, with a vector from EdgeD.Start to the specified point.
double	CrossZ(EdgeD edge)	Returns the Z component of the cross product of this edge, treated as a vector, with the specified edge, also treated as a vector.
double	Distance(PointD point)	Calculates the distance between the specified point and the extended straight line identified by this edge.
bool	Equals(EdgeD other) Implements: IEquatable<EdgeD>.Equals(EdgeD)	Compares two EdgeD ignoring direction: edges are considered equal as long as they have the same endpoints.
bool	Equals(object obj) Overrides: object.Equals(object)	Compares two EdgeD objects for equality.
int	GetHashCode() Overrides: object.GetHashCode()	Returns a hash code for the current EdgeD.
bool	IntersectsWith(EdgeD r, bool excludeVertexTouching = false)	Determines whether two edges intersect.
double	LambdaOfPointDroppedPerpendicularly(PointD point)	Calculates the projection of the specified point onto the line defined by this edge. Returns the Lambda of this point P, defined by P = Start + Lambda * (End - Start). Hence the lambda is 0 if the projection falls exactly onto the Start point, and 1 if it falls on the End point.
PointD	PointOnEdgeNearestTo(PointD point)	Returns a point on this edge that is as near as possible to the specified point.
string	ToString() Overrides: object.ToString()	Provides a string representation of the current EdgeD.

Operators

bool	operator==(EdgeD one, EdgeD other)	Compares two EdgeD ignoring direction: edges are considered equal as long as they have the same endpoints.
bool	operator!=(EdgeD one, EdgeD other)

Instance properties

double	Angle	Returns the angle between the x-axis and this edge, in radians.
double	AngleDeg	Returns the angle between the x-axis and this edge, in degrees.
double	Height	Returns the difference in the Y-co-ordinates of the start and end point of this EdgeD.
double	Length	Returns the length of this edge (the distance between EdgeD.Start and EdgeD.End).
PointD	Midpoint	Returns the point located halfway along this edge.
double	Width	Returns the difference in the X-co-ordinates of the start and end point of this EdgeD.

Instance fields

PointD	End	End point of the line segment.
PointD	Start	Start point of the line segment.