mirror of
https://github.com/pybricks/pybricks-api.git
synced 2026-09-12 09:37:25 +00:00
Laurens Valk
a2583944d9
This location makes more sense. Also drop Axis.ANY = None, which is more confusing than helpful. Instead, use relevant docstring to explain what None will do.
61 lines
1.5 KiB
Python
61 lines
1.5 KiB
Python
# SPDX-License-Identifier: MIT
|
|
# Copyright (c) 2018-2020 The Pybricks Authors
|
|
|
|
"""Core linear algebra functionality for orientation sensors and robotics."""
|
|
|
|
|
|
class Matrix:
|
|
"""Mathematical representation of a matrix. It supports common operations
|
|
such as matrix addition (``+``), subtraction (``-``),
|
|
and multiplication (``*``). A :class:`.Matrix` object is immutable."""
|
|
|
|
def __init__(self, rows):
|
|
"""
|
|
|
|
Arguments:
|
|
rows (list): List of rows. Each row is itself a list of numbers.
|
|
|
|
"""
|
|
|
|
@property
|
|
def T(self):
|
|
"""Returns a new :class:`.Matrix` that is the transpose of the
|
|
original."""
|
|
pass
|
|
|
|
@property
|
|
def shape(self):
|
|
"""Returns a tuple (``m``, ``n``),
|
|
where ``m`` is the number of rows and ``n`` is the number of columns.
|
|
"""
|
|
pass
|
|
|
|
|
|
def vector(x, y, z=None):
|
|
"""Convenience function to create a :class:`.Matrix` with the
|
|
shape (``3``, ``1``) or (``2``, ``1``).
|
|
|
|
Arguments:
|
|
x (float): x-coordinate of the vector.
|
|
y (float): y-coordinate of the vector.
|
|
z (float): z-coordinate of the vector (optional).
|
|
|
|
|
|
Returns:
|
|
Matrix: A matrix with the shape of a column vector.
|
|
"""
|
|
pass
|
|
|
|
|
|
class Axis():
|
|
"""Unit axes of a coordinate system.
|
|
|
|
.. data:: X = vector(1, 0, 0)
|
|
.. data:: Y = vector(0, 1, 0)
|
|
.. data:: Z = vector(0, 0, 1)
|
|
|
|
"""
|
|
X = vector(1, 0, 0)
|
|
Y = vector(0, 1, 0)
|
|
Z = vector(0, 0, 1)
|