sect 2.0.0

Geometric objects partitioning.

sect

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

Installation

Install the latest pip & setuptools packages versions

python -m pip install --upgrade pip setuptools

User

Download and install the latest stable version from PyPI repository

python -m pip install --upgrade sect

Developer

Download the latest version from GitHub repository

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

Install dependencies

python -m pip install -r requirements.txt

Install

python setup.py install

Usage

>>> from ground.base import get_context
>>> from sect.triangulation import Triangulation
>>> context = get_context()
>>> Contour, Point = context.contour_cls, context.point_cls
>>> (Triangulation.delaunay([Point(0, 0), Point(1, 0), Point(0, 1)],
...                         context=context).triangles()
...  == [Contour([Point(0, 0), Point(1, 0), Point(0, 1)])])
True
>>> (Triangulation.delaunay([Point(0, 0), Point(3, 0), Point(1, 1),
...                          Point(0, 3)],
...                         context=context).triangles()
...  == [Contour([Point(0, 0), Point(3, 0), Point(1, 1)]),
...      Contour([Point(0, 0), Point(1, 1), Point(0, 3)]),
...      Contour([Point(0, 3), Point(1, 1), Point(3, 0)])])
True
>>> (Triangulation.delaunay([Point(0, 0), Point(1, 0), Point(1, 1),
...                          Point(0, 1)],
...                         context=context).triangles()
...  == [Contour([Point(0, 1), Point(1, 0), Point(1, 1)]),
...      Contour([Point(0, 0), Point(1, 0), Point(0, 1)])])
True
>>> Polygon = context.polygon_cls
>>> (Triangulation.constrained_delaunay(
...      Polygon(Contour([Point(0, 0), Point(1, 0), Point(0, 1)]), []),
...      context=context).triangles()
...  == [Contour([Point(0, 0), Point(1, 0), Point(0, 1)])])
True
>>> (Triangulation.constrained_delaunay(
...      Polygon(Contour([Point(0, 0), Point(3, 0), Point(1, 1), Point(0, 3)]),
...              []),
...      context=context).triangles()
...  == [Contour([Point(0, 0), Point(3, 0), Point(1, 1)]),
...      Contour([Point(0, 0), Point(1, 1), Point(0, 3)])])
True
>>> (Triangulation.constrained_delaunay(
...      Polygon(Contour([Point(0, 0), Point(4, 0), Point(0, 4)]),
...              [Contour([Point(0, 0), Point(1, 2),
...                        Point(2, 1)])]),
...      context=context).triangles()
...  == [Contour([Point(0, 0), Point(4, 0), Point(2, 1)]),
...      Contour([Point(1, 2), Point(2, 1), Point(4, 0)]),
...      Contour([Point(0, 4), Point(1, 2), Point(4, 0)]),
...      Contour([Point(0, 0), Point(1, 2), Point(0, 4)])])
True
>>> from sect.decomposition import Graph
>>> graph = Graph.from_polygon(Polygon(Contour([Point(0, 0), Point(6, 0),
...                                             Point(6, 6), Point(0, 6)]),
...                                    [Contour([Point(2, 2), Point(2, 4),
...                                              Point(4, 4), Point(4, 2)])]),
...                            context=context)
>>> Point(0, 0) in graph
True
>>> Point(1, 1) in graph
True
>>> Point(2, 2) in graph
True
>>> Point(3, 3) in graph
False
>>> from sect.decomposition import Location
>>> graph.locate(Point(0, 0)) is Location.BOUNDARY
True
>>> graph.locate(Point(1, 1)) is Location.INTERIOR
True
>>> graph.locate(Point(2, 2)) is Location.BOUNDARY
True
>>> graph.locate(Point(3, 3)) is Location.EXTERIOR
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

python -m pip install -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