robust 0.2.2

Robust computational geometry predicates.

robust

In what follows

• python is an alias for python3.5 or any later version (python3.6 and so on),
• pypy is an alias for pypy3.5 or any later version (pypy3.6 and so on).

Installation

Install the latest pip & setuptools packages versions:

• with CPython

  python -m pip install --upgrade pip setuptools
  

• with PyPy

  pypy -m pip install --upgrade pip setuptools
  

User

Download and install the latest stable version from PyPI repository:

• with CPython

  python -m pip install --upgrade robust
  

• with PyPy

  pypy -m pip install --upgrade robust
  

Developer

Download the latest version from GitHub repository

git clone https://github.com/lycantropos/robust.git
cd robust

Install dependencies:

• with CPython

  python -m pip install --force-reinstall -r requirements.txt
  

• with PyPy

  pypy -m pip install --force-reinstall -r requirements.txt
  

Install:

• with CPython

  python setup.py install
  

• with PyPy

  pypy setup.py install
  

Usage

>>> from robust import cocircular
>>> cocircular.determinant((0, 0), (2, 0), (0, 2), (1, 1))
8
>>> cocircular.determinant((0, 0), (2, 0), (0, 2), (3, 3))
-24
>>> cocircular.determinant((0, 0), (2, 0), (2, 2), (0, 2))
0
>>> from robust import parallelogram
>>> parallelogram.signed_area((0, 0), (2, 0), (0, 0), (0, 2))
4
>>> parallelogram.signed_area((0, 0), (0, 2), (0, 0), (2, 0))
-4
>>> parallelogram.signed_area((0, 0), (0, 2), (0, 0), (0, 2))
0
>>> from robust import projection
>>> projection.signed_length((0, 0), (2, 0), (0, 0), (2, 0))
4
>>> projection.signed_length((0, 0), (2, 0), (0, 0), (-2, 0))
-4
>>> projection.signed_length((0, 0), (2, 0), (0, 0), (0, 2))
0
>>> from robust.angular import Orientation, orientation
>>> orientation((0, 1), (0, 0), (1, 0)) is Orientation.CLOCKWISE
True
>>> orientation((1, 0), (0, 0), (2, 0)) is Orientation.COLLINEAR
True
>>> orientation((1, 0), (0, 0), (0, 1)) is Orientation.COUNTERCLOCKWISE
True
>>> from robust.angular import Kind, kind
>>> kind((0, 0), (1, 0), (2, 0)) is Kind.OBTUSE
True
>>> kind((0, 1), (0, 0), (1, 0)) is Kind.RIGHT
True
>>> kind((1, 0), (0, 0), (2, 0)) is Kind.ACUTE
True
>>> from robust.linear import SegmentsRelationship, segments_relationship
>>> segments_relationship(((0, 0), (1, 0)),
...                       ((2, 0), (3, 0))) is SegmentsRelationship.NONE
True
>>> segments_relationship(((0, 0), (1, 0)),
...                       ((1, 0), (2, 0))) is SegmentsRelationship.TOUCH
True
>>> segments_relationship(((0, 0), (1, 1)),
...                       ((0, 1), (1, 0))) is SegmentsRelationship.CROSS
True
>>> segments_relationship(((0, 0), (1, 0)),
...                       ((0, 0), (1, 0))) is SegmentsRelationship.OVERLAP
True

Development

Bumping version

Preparation

Install bump2version.

Pre-release

Choose which version number category to bump following semver specification.

Test bumping version

bump2version --dry-run --verbose $CATEGORY

where $CATEGORY is the target version number category name, possible values are patch/minor/major.

Bump version

bump2version --verbose $CATEGORY

This will set version to major.minor.patch-alpha.

Release

Test bumping version

bump2version --dry-run --verbose release

Bump version

bump2version --verbose release

This will set version to major.minor.patch.

Running tests

Install dependencies:

• with CPython

  python -m pip install --force-reinstall -r requirements-tests.txt
  

• with PyPy

  pypy -m pip install --force-reinstall -r requirements-tests.txt
  

Plain

pytest

Inside Docker container:

• with CPython

  docker-compose --file docker-compose.cpython.yml up
  

• with PyPy

  docker-compose --file docker-compose.pypy.yml up
  

Bash script (e.g. can be used in Git hooks):

• with CPython

  ./run-tests.sh
  

  or

  ./run-tests.sh cpython
  

• with PyPy

  ./run-tests.sh pypy
  

PowerShell script (e.g. can be used in Git hooks):

• with CPython

  .\run-tests.ps1
  

  or

  .\run-tests.ps1 cpython
  

• with PyPy

  .\run-tests.ps1 pypy