Spiral KappaStart/ KappaEnd

[wendy0527]

how to solve the start and end curvatures by fitting many points(xi,yi) ? Can you explain，the following code got multiple spirals using two points.
`
def road(self, **kwargs):
start_x = 0 # x coordinate at the beginning of the curvature
start_y = 0 # y coordinate at the beginning of the curvature
start_h = 0 # heading at the beginning of the curvature

    end_x = 150  # x coordinate at the end of the curvature
    end_y = 20  # y coordinate at the end of the curvature
    end_h = 0  # heading at the end of the curvature

    clothoids = pcloth.SolveG2(
        start_x,
        start_y,
        start_h,
        xodr.STD_START_CLOTH,
        end_x,
        end_y,
        end_h,
        xodr.STD_START_CLOTH,
    )
    # create spirals from each responce
    roadgeoms = [
        xodr.Spiral(x.KappaStart, x.KappaEnd, length=x.length) for x in clothoids
    ]

`

[MandolinMicke]

The method implemented is scenariogeneration only fits three clothods between two points (with headings) based on the pyclothoids package.

If you want to know exactly how it works, or other methods in that package I would suggest to visit https://github.com/phillipd94/pyclothoids