gdstk.ellipse

gdstk.ellipse(center, radius, inner_radius=None, initial_angle=0, final_angle=0, tolerance=0.01, layer=0, datatype=0) → gdstk.Polygon

Create an ellipse, circle, slice or ring.

Parameters:

  • center (coordinate pair or complex) – Circle/ellipse center.

  • radius (number or sequence) – Circle radius of the circle. A pair of numbers can be used to define an ellipse.

  • inner_radius (number or sequence) – If set, creates a ring.

  • initial_angle – Initial angle to define a slice.

  • final_angle – Final slice angle.

  • tolerance – Tolerance used for calculating the polygonal approximation of this shape.

  • layer – layer number assigned to this polygon.

  • datatype – data type number assigned to this polygon.

Examples

>>> circle = gdstk.ellipse((0, 0), 40)
>>> ellipse = gdstk.ellipse((100, 0), (40, 30), layer=1)
>>> ring = gdstk.ellipse((0, 100), 40, inner_radius=(30, 20),
                         layer=2)
>>> c_slice = gdstk.ellipse((100, 100), 40,
...                         initial_angle=-numpy.pi / 4,
...                         final_angle=5 * numpy.pi / 4,
...                         layer=3)
>>> r_slice = gdstk.ellipse((50, 200), (70, 30), (60, 20),
...                         -3 * numpy.pi / 4, numpy.pi / 2,
...                         layer=4)
../_images/ellipse.svg