Source code for ladybug_display.geometry2d.arc

"""An arc that can be displayed in 2D space."""
from ladybug_geometry.geometry2d.arc import Arc2D
from ladybug.color import Color

from ladybug_display.altnumber import default
from ._base import _LineCurveBase2D


class DisplayArc2D(_LineCurveBase2D):
    """An arc in 2D space with display properties.

    Args:
        geometry: A ladybug-geometry Arc2D object.
        color: A ladybug Color object. If None, a default black color will be
            used. (Default: None).
        line_width: Number for line width in pixels (for the screen). For print,
            this will be converted a value in millimeters or inches assuming
            standard web resolution (72 pixels per inch). This can also be the
            Default object to indicate that the default settings of the
            interface should be used (typically one pixel).
        line_type: Get or set text to indicate the type of line to display.
            Choose from the following. (Default: "Continuous")

            * Continuous
            * Dashed
            * Dotted
            * DashDot

    Properties:
        * geometry
        * color
        * line_width
        * line_type
        * c
        * r
        * p1
        * p2
        * length
        * is_circle
        * user_data
    """
    __slots__ = ()

    def __init__(self, geometry, color=None, line_width=default, line_type='Continuous'):
        """Initialize base with shade object."""
        assert isinstance(geometry, Arc2D), '\
            Expected ladybug_geometry Arc2D. Got {}'.format(type(geometry))
        _LineCurveBase2D.__init__(self, geometry, color, line_width, line_type)

    @classmethod
    def from_dict(cls, data):
        """Initialize a DisplayArc2D from a dictionary.

        Args:
            data: A dictionary representation of an DisplayArc2D object.
        """
        assert data['type'] == 'DisplayArc2D', \
            'Expected DisplayArc2D dictionary. Got {}.'.format(data['type'])
        color = Color.from_dict(data['color']) if 'color' in data and data['color'] \
            is not None else None
        lw = default if 'line_width' not in data or \
            data['line_width'] == default.to_dict() else data['line_width']
        lt = data['line_type'] if 'line_type' in data and data['line_type'] \
            is not None else 'Continuous'
        geo = cls(Arc2D.from_dict(data['geometry']), color, lw, lt)
        if 'user_data' in data and data['user_data'] is not None:
            geo.user_data = data['user_data']
        return geo

    @property
    def c(self):
        """Get a Point2D for the center of the arc."""
        return self._geometry.c

    @property
    def r(self):
        """Get a number for the radius of the arc."""
        return self._geometry.r

    @property
    def p1(self):
        """Get a Point2D representing the first end point of the arc."""
        return self._geometry.p1

    @property
    def p2(self):
        """Get a Point2D representing the second end point of the arc."""
        return self._geometry.p2

    @property
    def length(self):
        """Get a number for the length of the arc."""
        return self._geometry.length

    @property
    def is_circle(self):
        """Get a boolean for whether the arc is a circle."""
        return self._geometry.is_circle

    def to_dict(self):
        """Return DisplayArc2D as a dictionary."""
        base = {'type': 'DisplayArc2D'}
        base['geometry'] = self._geometry.to_dict()
        base['color'] = self.color.to_dict()
        base['line_width'] = default.to_dict() if \
            self.line_width == default else self.line_width
        base['line_type'] = self.line_type
        if self.user_data is not None:
            base['user_data'] = self.user_data
        return base

    def __copy__(self):
        new_g = DisplayArc2D(
            self.geometry, self.color, self.line_width, self.line_type)
        new_g._user_data = None if self.user_data is None else self.user_data.copy()
        return new_g

    def __repr__(self):
        return 'DisplayArc2D: {}'.format(self.geometry)