Function Line2D.addPoint

Adds a point at the position. Appends the point at the end of the line. If at_position is given, the point is inserted before the point number at_position, moving that point (and every point after) after the inserted point. If at_position is not given, or is an illegal value (at_position < 0 or at_position >= class="pln">D getPointCount), the point will be appended at the end of the point list.

void addPoint (
  const(Vector2) position,
  const(long) at_position = -1L
) nothrow @nogc;