libpysal.cg.get_point_at_angle_and_dist¶

libpysal.cg.get_point_at_angle_and_dist(ray, angle, dist)[source]¶

Returns the point at a distance and angle relative to the origin of a ray.

Parameters:¶

ray : libpysal.cg.Ray¶

The ray to which angle and dist are relative.

angle : float¶

The angle relative to ray at which point is located.

dist : float¶

The distance from the origin of ray at which point is located.

Returns:¶

point – The point at dist and angle relative to the origin of ray.

Return type:¶

libpysal.cg.Point

Examples

>>> ray = Ray(Point((0, 0)), Point((1, 0)))
>>> pt = get_point_at_angle_and_dist(ray, math.pi, 1.0)
>>> isinstance(pt, Point)
True

>>> round(pt[0], 8)
-1.0

>>> round(pt[1], 8)
0.0