Ray Module¶
ray
module provides utilities for ray operations. A ray (halfline) is defined by two distinct points represented
by Ray
class. This module also provides a function to compute intersection of 2 rays.
Function and Class Reference¶

class
geomdl.ray.
Ray
(point1, point2)¶ Representation of a ndimensional ray generated from 2 points.
A ray is defined by where :math`t` is the parameter value, is the vector component of the ray, is the origin point and is the second point which is required to define a line segment
Parameters:  point1 (list, tuple) – 1st point of the line segment
 point2 (list, tuple) – 2nd point of the line segment

d
¶ Vector component of the ray (d)
Please refer to the wiki for details on using this class member.
Getter: Gets the vector component of the ray

dimension
¶ Spatial dimension of the ray
Please refer to the wiki for details on using this class member.
Getter: Gets the dimension of the ray

eval
(t=0)¶ Finds the point on the line segment defined by the input parameter.
returns the origin (1st) point, defined by the input argument
point1
and returns the end (2nd) point, defined by the input argumentpoint2
.Parameters: t (float) – parameter Returns: point at the parameter value Return type: tuple

class
geomdl.ray.
RayIntersection
¶ The status of the ray intersection operation

COLINEAR
= 2¶

INTERSECT
= 1¶

SKEW
= 3¶


geomdl.ray.
intersect
(ray1, ray2, **kwargs)¶ Finds intersection of 2 rays.
This functions finds the parameter values for the 1st and 2nd input rays and returns a tuple of
(parameter for ray1, parameter for ray2, intersection status)
.status
value is a enum type which reports the case which the intersection operation encounters.The intersection operation can encounter 3 different cases:
 Intersecting: This is the anticipated solution. Returns
(t1, t2, RayIntersection.INTERSECT)
 Colinear: The rays can be parallel or coincident. Returns
(t1, t2, RayIntersection.COLINEAR)
 Skew: The rays are neither parallel nor intersecting. Returns
(t1, t2, RayIntersection.SKEW)
For the colinear case,
t1
andt2
are the parameter values that give the starting point of the ray2 and ray1, respectively. Therefore;ray1.eval(t1) == ray2.p ray2.eval(t2) == ray1.p
Please note that this operation is only implemented for 2 and 3dimensional rays.
Parameters:  ray1 – 1st ray
 ray2 – 2nd ray
Returns: a tuple of the parameter (t) for ray1 and ray2, and status of the intersection
Return type: tuple
 Intersecting: This is the anticipated solution. Returns