sparrowpy.geometry#

Module for scene geometry handling and basic algebraic methods.

Classes:

Polygon(points, up_vector, normal)

Polygon constructed from greater than two points.

class sparrowpy.geometry.Polygon(points: ndarray, up_vector: ndarray, normal: ndarray)[source]#

Bases: object

Polygon constructed from greater than two points.

Only convex polygons are allowed! Order of points is of course important!

Attributes:

`area`	Return the area in m^2 of the polygon.
`center`	Return the center coordinates of the polygon.
`n_points`	Return the number of points of the polygon.
`normal`	Return the normal vector of the polygon.
`pts`
`size`	Return the size in (lxmxn) of the polygon.
`up_vector`

Methods:

`from_dict`(input_dict)	Create an object from a dictionary.
`intersection`(origin, direction)	Return a intersection point with a ray and the polygon.
`on_surface`(point)	Return if a point is on the surface of the polygon.
`plot`([ax, color])	Plot the polygon.
`plot_point`([ax, color])	Plot the polygon points.
`plot_view_up`([ax])	Plot the view and up vector of the polygon.
`to_dict`()	Convert this object to dictionary.

property area: ndarray#: Return the area in m^2 of the polygon. supports all convex polygons and some concave polygons.

classmethod from_dict(input_dict)[source]#: Create an object from a dictionary. Used for read write.

intersection(origin: ndarray, direction: ndarray) → ndarray[source]#

Return a intersection point with a ray and the polygon.

Parameters:

Returns:

intersection point, if it hit, otherwise None

Return type:

np.ndarray

on_surface(point: ndarray) → bool[source]#

Return if a point is on the surface of the polygon.

Returns True if the point is on the polygon’s surface and false otherwise.

plot(ax: Axes = None, color=None)[source]#

Plot the polygon.

Parameters:

plot_point(ax: Axes = None, color=None)[source]#: Plot the polygon points.

plot_view_up(ax: Axes = None)[source]#: Plot the view and up vector of the polygon.