def to_ellipse(self) -> compas.geometry.Ellipse:
"""Convert the edge geometry to an ellipse.
Returns
-------
:class:`~compas.geometry.Ellipse`
A COMPAS ellipse.
Raises
------
ValueError
If the underlying geometry is not an ellipse.
"""
if not self.is_ellipse:
raise ValueError(
f'The underlying geometry is not an ellipse: {self.type}')
curve = self.adaptor.Curve()
ellipse = curve.Ellipse()
location = ellipse.Location()
direction = ellipse.Axis().Direction()
major = ellipse.MajorRadius()
minor = ellipse.MinorRadius()
point = location.X(), location.Y(), location.Z()
normal = direction.X(), direction.Y(), direction.Z()
return Ellipse(Plane(point, normal), major, minor)
def ellipse_to_compas(ellipse):
"""Convert a Rhino ellipse to a COMPAS ellipse.
Parameters
----------
ellipse : :class:`Rhino.Geometry.Ellipse`
Returns
-------
:class:`compas.geometry.Ellipse`
"""
return Ellipse(plane_to_compas(ellipse.Plane), ellipse.Major,
ellipse.Minor)
# ==============================================================================
if __name__ == '__main__':
from compas.geometry import Ellipse
from compas.geometry import Point
from compas.geometry import Plane
from compas.geometry import Vector
from compas.geometry import Translation
from compas_plotters import GeometryPlotter
plotter = GeometryPlotter()
plane = Plane(Point(0, 0, 0), Vector(0, 0, 1))
a = Ellipse(plane, 5.0, 3.0)
b = Ellipse(plane, 2.0, 1.0)
c = Ellipse(plane, 3.0, 1.0)
T = Translation.from_vector([0.1, 0.0, 0.0])
plotter.add(a, edgecolor='#ff0000', fill=False)
plotter.add(b, edgecolor='#00ff00', fill=False)
plotter.add(c, edgecolor='#0000ff', fill=False)
plotter.pause(1.0)
for i in range(100):
a.transform(T)
plotter.redraw(pause=0.01)
from compas.geometry import Vector, Point, Plane from compas.geometry import Polyline from compas.geometry import Ellipse from compas.geometry import NurbsCurve from compas.artists import Artist from compas.colors import Color ellipse = Ellipse(Plane(Point(0, 0, 0), Vector(0, 0, 1)), 2.0, 1.0) curve = NurbsCurve.from_ellipse(ellipse) # ============================================================================== # Visualisation # ============================================================================== Artist.clear() Artist(curve).draw(color=Color.green()) Artist(Polyline(curve.points)).draw(show_points=True) Artist.redraw()
self._mpl_ellipse.set_edgecolor(self.edgecolor)
self._mpl_ellipse.set_facecolor(self.facecolor)
# ==============================================================================
# Main
# ==============================================================================
if __name__ == '__main__':
from compas.geometry import Ellipse
from compas.geometry import Point
from compas.geometry import Plane
from compas.geometry import Vector
from compas_plotters import Plotter2
plotter = Plotter2()
plane = Plane(Point(0, 0, 0), Vector(0, 0, 1))
a = Ellipse(plane, 5.0, 3.0)
b = Ellipse(plane, 2.0, 1.0)
c = Ellipse(plane, 3.0, 1.0)
plotter.add(a, edgecolor='#ff0000', fill=False)
plotter.add(b, edgecolor='#00ff00', fill=False)
plotter.add(c, edgecolor='#0000ff', fill=False)
plotter.draw()
plotter.show()