var_line_string

opstool.preprocessing.var_line_string(pointsi, pointsj, path, n_sec=2, closure=False, y_degree=1, y_sym_plane='j-0', z_degree=2, z_sym_plane='j-0')

Returns the varied line string.

Parameters

pointsilist[list[float, float]]

I end line points.

pointsjlist[list[float, float]]

J end line points.

pathlist

Coordinate path of section normal, such as [(x1, y1, z1), (x2, y2, z2), … , (xn, yn, zn)].

n_secfloat, optional

The number of sections within each line segment between two coords in Arg path, by default 2.

closure: bool, default=False

If True, the line is a closed loop.

y_degreeint, optional

The polynomial order of the y-axis dimension variation of the section, 1=linear, 2=parabolic, by default 1.

y_sym_planestr, optional, by default “j-0”

When `y_degree`=2, specify the position of the symmetry plane, where the derivative is 0. The format is “i-{d}” or “j-{d}”, which means that the distance from end i or end j is d. For example, “j-0” refers to end j, and “j-1.5” refers to the position 1.5 away from end j.

z_degreeint, optional

The polynomial order of the z-axis dimension variation of the section, 1=linear, 2=parabolic, by default 2.

z_sym_planestr, optional, by default “j-0”

When `z_degree`=2, specify the position of the symmetry plane, where the derivative is 0. The format is “i-{d}” or “j-{d}”, which means that the distance from end i or end j is d. For example, “j-0” refers to end j, and “j-1.5” refers to the position 1.5 away from end j.

Returns

list[list[list[float, float]]]

A list of lines, the number of which is determined by path and n_sec.