LineCurve
=========

.. py:class:: py3dm.LineCurve
              LineCurve(line: Line)
              LineCurve(start: Point3d, end: Point3d)

   Bases: :py:obj:`Geometry`


   Python bindings for the openNURBS ``ON_LineCurve`` class.



   .. py:attribute:: line
      :type:  Line


   .. py:method:: dimension() -> int

      Returns ``2`` or ``3`` (``2`` so ``ON_LineCurve`` can be uses as a
      trimming curve).



   .. py:method:: is_valid(text_log: TextLog | None = None) -> bool

      Returns ``True`` if start ``!=`` end and both start and end are
      valid points.



   .. py:method:: reverse() -> bool

      Reverses the parameterization. Domain changes from ``[a, b]`` to
      ``[-b, -a]``.



   .. py:method:: set_end_point(new_end: Point3d) -> bool

      Forces the curve to end at a specified point.

      :param new_end: The new end point.
      :type new_end: Point3d

      :returns: **success** -- ``True`` if successful, ``False`` otherwise.
      :rtype: bool

      .. rubric:: Notes

      Some end points cannot be moved. Be sure to check return code.



   .. py:method:: set_start_point(new_end: Point3d) -> bool

      Forces the curve to start at a specified point.

      :param new_start: The new start point.
      :type new_start: Point3d

      :returns: **success** -- ``True`` if successful, ``False`` otherwise.
      :rtype: bool

      .. rubric:: Notes

      Some start points cannot be moved. Be sure to check return code.



   .. py:method:: swap_coordinates(index_i: int, index_j: int) -> bool

      Swaps the coordinates of the given indices.

      :returns: **success** -- ``True`` if successful, ``False`` otherwise.
      :rtype: bool