Line Structure 
Namespace: Rhino.Geometry
The Line type exposes the following members.
Name  Description  

Line(Point3d, Point3d) 
Constructs a new line segment between two points.
 
Line(Point3d, Vector3d) 
Constructs a new line segment from start point and span vector.
 
Line(Point3d, Vector3d, Double) 
Constructs a new line segment from start point, direction and length.
 
Line(Double, Double, Double, Double, Double, Double) 
Constructs a new line segment between two points.

Name  Description  

BoundingBox 
Gets the line's 3d axis aligned bounding box.
 
Direction 
Gets the direction of this line segment.
The length of the direction vector equals the length of
the line segment.
 
From 
Start point of line segment.
 
FromX 
Gets or sets the X coordinate of the line From point.
 
FromY 
Gets or sets the Y coordinate of the line From point.
 
FromZ 
Gets or sets the Z coordinate of the line From point.
 
IsValid 
Gets a value indicating whether or not this line is valid.
Valid lines must have valid start and end points.
 
Length 
Gets or sets the length of this line segment.
Note that a negative length will invert the line segment without
making the actual length negative. The line From point will remain fixed
when a new Length is set.
 
To 
End point of line segment.
 
ToX 
Gets or sets the X coordinate of the line To point.
 
ToY 
Gets or sets the Y coordinate of the line To point.
 
ToZ 
Gets or sets the Z coordinate of the line To point.
 
UnitTangent 
Gets the tangent of the line segment.
Note that tangent vectors are always unit vectors.
 
Unset 
Gets a line segment which has Unset end points.

Name  Description  

ClosestParameter 
Finds the parameter on the infinite line segment that is closest to a test point.
 
ClosestPoint 
Finds the point on the (in)finite line segment that is closest to a test point.
 
DistanceTo 
Compute the shortest distance between this line segment and a test point.
 
EpsilonEquals 
Check that all values in other are within epsilon of the values in this
 
Equals(Object) 
Determines whether an object is a line that has the same value as this line.
(Overrides ValueTypeEquals(Object).)  
Equals(Line) 
Determines whether a line has the same value as this line.
 
Extend 
Extend the line by custom distances on both sides.
 
ExtendThroughBox(BoundingBox) 
Ensure the line extends all the way through a box.
Note, this does not result in the shortest possible line
that overlaps the box.
 
ExtendThroughBox(Box) 
Ensure the line extends all the way through a box.
Note, this does not result in the shortest possible line that overlaps the box.
 
ExtendThroughBox(BoundingBox, Double) 
Ensure the line extends all the way through a box.
Note, this does not result in the shortest possible line that overlaps the box.
 
ExtendThroughBox(Box, Double) 
Ensure the line extends all the way through a box.
Note, this does not result in the shortest possible line that overlaps the box.
 
Flip 
Flip the endpoints of the line segment.
 
GetHashCode 
Computes a hash number that represents this line.
(Overrides ValueTypeGetHashCode.)  
GetType  Gets the Type of the current instance. (Inherited from Object.)  
MaximumDistanceTo(Line) 
Finds the largest distance between this line as a finite segment
and another finite segment.
 
MaximumDistanceTo(Point3d) 
Finds the largest distance between this line as a finite segment
and a test point.
 
MinimumDistanceTo(Line) 
Finds the shortest distance between this line as a finite segment
and another finite segment.
 
MinimumDistanceTo(Point3d) 
Finds the shortest distance between this line as a finite segment
and a test point.
 
PointAt 
Evaluates the line at the specified parameter.
 
PointAtLength 
Computes a point located at a specific metric distance from the line origin (From).
If line start and end coincide, then the start point is always returned.  
ToNurbsCurve 
Constructs a nurbs curve representation of this line.
This amounts to the same as calling NurbsCurve.CreateFromLine().
 
ToString 
Contructs the string representation of this line, in the form "From,To".
(Overrides ValueTypeToString.)  
Transform 
Transform the line using a Transformation matrix.
 
TryCreateBetweenCurves 
Creates a line segment between a pair of curves such that the line segment is either tangent or perpendicular to each of the curves.
 
TryFitLineToPoints 
Attempt to fit a line through a set of points.
 
TryGetPlane 
Gets a plane that contains the line. The origin of the plane is at the start of the line.
If possible, a plane parallel to the world xy, yz, or zx plane is returned.

Name  Description  

Equality 
Determines whether two lines have the same value.
 
Inequality 
Determines whether two lines have different values.
