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Metadata-Version: 2.2
Name: pytweening
Version: 1.2.0
Summary: A collection of tweening (aka easing) functions.
Home-page: https://github.com/asweigart/pytweening
Author: Al Sweigart
Author-email: al@inventwithpython.com
License: MIT
Keywords: 2D animation tween tweening easing
Classifier: Development Status :: 5 - Production/Stable
Classifier: Environment :: Win32 (MS Windows)
Classifier: Environment :: X11 Applications
Classifier: Environment :: MacOS X
Classifier: Intended Audience :: Developers
Classifier: Operating System :: OS Independent
Classifier: License :: OSI Approved :: MIT License
Classifier: Programming Language :: Python
Classifier: Programming Language :: Python :: 2
Classifier: Programming Language :: Python :: 2.7
Classifier: Programming Language :: Python :: 3
Classifier: Programming Language :: Python :: 3.4
Classifier: Programming Language :: Python :: 3.5
Classifier: Programming Language :: Python :: 3.6
Classifier: Programming Language :: Python :: 3.7
Classifier: Programming Language :: Python :: 3.8
Classifier: Programming Language :: Python :: 3.9
Classifier: Programming Language :: Python :: 3.10
Classifier: Programming Language :: Python :: 3.11
Classifier: Programming Language :: Python :: 3.12
Description-Content-Type: text/markdown
License-File: LICENSE.txt
License-File: AUTHORS.txt
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PyTweening
==========

A collection of tweening (aka easing) functions implemented in Python. You can learn more about it in this blog post: https://inventwithpython.com/blog/2024/02/20/make-lively-movement-animation-with-pytweenings-tweening-functions/ and in the Nordic Game Jam talk by Martin Jonasson and Petri Purho at https://youtu.be/Fy0aCDmgnxg?si=8pgITaxjJSKFyBuB&t=159

Example Usage
=============

All tweening functions are passed an argument of a float from 0.0 (the beginning of the path) to 1.0 (the end of the path) of the tween:

    >>> pytweening.linear(0.5)
    0.5
    >>> pytweening.linear(0.75)
    0.75
    >>> pytweening.linear(1.0)
    1.0
    >>> pytweening.easeInQuad(0.5)
    0.25
    >>> pytweening.easeInQuad(0.75)
    0.5625
    >>> pytweening.easeInQuad(1.0)
    1.0
    >>> pytweening.easeInOutSine(0.75)
    0.8535533905932737
    >>> pytweening.easeInOutSine(1.0)
    1.0

The getLine() function also provides a Bresenham line algorithm implementation:

    >>> pytweening.getLine(0, 0, 5, 10)
    [(0, 0), (0, 1), (1, 2), (1, 3), (2, 4), (2, 5), (3, 6), (3, 7), (4, 8), (4, 9), (5, 10)]

The getLinePoint() function finds (interpolates) a point on the given line (even if it extends before or past the start or end points):

    >>> getLinePoint(0, 0, 5, 10, 0.0)
    (0.0, 0.0)
    >>> getLinePoint(0, 0, 5, 10, 0.25)
    (1.25, 2.5)
    >>> getLinePoint(0, 0, 5, 10, 0.5)
    (2.5, 5.0)
    >>> getLinePoint(0, 0, 5, 10, 0.75)
    (3.75, 7.5)
    >>> getLinePoint(0, 0, 5, 10, 1.0)
    (5.0, 10.0)

PyTweening also provides iterators to get the XY coordinates in a for loop between two points (though some floating-point rounding errors naturally occur):

    >>> import pytweening
    >>> for x, y in pytweening.iterLinear(0, 0, 100, 150, 0.1): print(x, y)
    ...
    0.0 0.0
    10.0 15.0
    20.0 30.0
    30.000000000000004 45.00000000000001
    40.0 60.0
    50.0 75.0
    60.0 90.0
    70.0 105.0
    80.0 119.99999999999999
    89.99999999999999 135.0
    100.0 150.0
    >>> for x, y in pytweening.iterEaseOutQuad(0, 0, 100, 150, 0.1): print(x, y)
    ...
    0.0 0.0
    19.0 28.5
    36.00000000000001 54.00000000000001
    51.0 76.5
    64.00000000000001 96.00000000000001
    75.0 112.5
    84.0 126.0
    90.99999999999999 136.5
    96.00000000000001 144.0
    99.0 148.5
    100.0 150.0


Tweens
======

pytweening.linear()

![pytweening.linear()](https://raw.githubusercontent.com/asweigart/pytweening/master/docs/tweenGraphLinear.png)

pytweening.easeInQuad()

![pytweening.easeInQuad()](https://raw.githubusercontent.com/asweigart/pytweening/master/docs/tweenGraphEaseinquad.png)

pytweening.easeOutQuad()

![pytweening.easeOutQuad()](https://raw.githubusercontent.com/asweigart/pytweening/master/docs/tweenGraphEaseoutquad.png)

pytweening.easeInOutQuad()

![pytweening.easeInOutQuad()](https://raw.githubusercontent.com/asweigart/pytweening/master/docs/tweenGraphEaseinoutquad.png)

pytweening.easeInCubic()

![pytweening.easeInCubic()](https://raw.githubusercontent.com/asweigart/pytweening/master/docs/tweenGraphEaseincubic.png)

pytweening.easeOutCubic()

![pytweening.easeOutCubic()](https://raw.githubusercontent.com/asweigart/pytweening/master/docs/tweenGraphEaseoutcubic.png)

pytweening.easeInOutCubic()

![pytweening.easeInOutCubic()](https://raw.githubusercontent.com/asweigart/pytweening/master/docs/tweenGraphEaseinoutcubic.png)

pytweening.easeInQuart()

![pytweening.easeInQuart()](https://raw.githubusercontent.com/asweigart/pytweening/master/docs/tweenGraphEaseinquart.png)

pytweening.easeOutQuart()

![pytweening.easeOutQuart()](https://raw.githubusercontent.com/asweigart/pytweening/master/docs/tweenGraphEaseoutquart.png)

pytweening.easeInOutQuart()

![pytweening.easeInOutQuart()](https://raw.githubusercontent.com/asweigart/pytweening/master/docs/tweenGraphEaseinoutquart.png)

pytweening.easeInQuint()

![pytweening.easeInQuint()](https://raw.githubusercontent.com/asweigart/pytweening/master/docs/tweenGraphEaseinquint.png)

pytweening.easeOutQuint()

![pytweening.easeOutQuint()](https://raw.githubusercontent.com/asweigart/pytweening/master/docs/tweenGraphEaseoutquint.png)

pytweening.easeInOutQuint()

![pytweening.easeInOutQuint()](https://raw.githubusercontent.com/asweigart/pytweening/master/docs/tweenGraphEaseinoutquint.png)

pytweening.easeInSine()

![pytweening.easeInSine()](https://raw.githubusercontent.com/asweigart/pytweening/master/docs/tweenGraphEaseinsine.png)

pytweening.easeOutSine()

![pytweening.easeOutSine()](https://raw.githubusercontent.com/asweigart/pytweening/master/docs/tweenGraphEaseoutsine.png)

pytweening.easeInOutSine()

![pytweening.easeInOutSine()](https://raw.githubusercontent.com/asweigart/pytweening/master/docs/tweenGraphEaseinoutsine.png)

pytweening.easeInExpo()

![pytweening.easeInExpo()](https://raw.githubusercontent.com/asweigart/pytweening/master/docs/tweenGraphEaseinexpo.png)

pytweening.easeOutExpo()

![pytweening.easeOutExpo()](https://raw.githubusercontent.com/asweigart/pytweening/master/docs/tweenGraphEaseoutexpo.png)

pytweening.easeInOutExpo()

![pytweening.easeInOutExpo()](https://raw.githubusercontent.com/asweigart/pytweening/master/docs/tweenGraphEaseinoutexpo.png)

pytweening.easeInCirc()

![pytweening.easeInCirc()](https://raw.githubusercontent.com/asweigart/pytweening/master/docs/tweenGraphEaseincirc.png)

pytweening.easeOutCirc()

![pytweening.easeOutCirc()](https://raw.githubusercontent.com/asweigart/pytweening/master/docs/tweenGraphEaseoutcirc.png)

pytweening.easeInOutCirc()

![pytweening.easeInOutCirc()](https://raw.githubusercontent.com/asweigart/pytweening/master/docs/tweenGraphEaseinoutcirc.png)

pytweening.easeInElastic()

![pytweening.easeInElastic()](https://raw.githubusercontent.com/asweigart/pytweening/master/docs/tweenGraphEaseinelastic.png)

pytweening.easeOutElastic()

![pytweening.easeOutElastic()](https://raw.githubusercontent.com/asweigart/pytweening/master/docs/tweenGraphEaseoutelastic.png)

pytweening.easeInOutElastic()

![pytweening.easeInOutElastic()](https://raw.githubusercontent.com/asweigart/pytweening/master/docs/tweenGraphEaseinoutelastic.png)

pytweening.easeInBack()

![pytweening.easeInBack()](https://raw.githubusercontent.com/asweigart/pytweening/master/docs/tweenGraphEaseinback.png)

pytweening.easeOutBack()

![pytweening.easeOutBack()](https://raw.githubusercontent.com/asweigart/pytweening/master/docs/tweenGraphEaseoutback.png)

pytweening.easeInOutBack()

![pytweening.easeInOutBack()](https://raw.githubusercontent.com/asweigart/pytweening/master/docs/tweenGraphEaseinoutback.png)

pytweening.easeInBounce()

![pytweening.easeInBounce()](https://raw.githubusercontent.com/asweigart/pytweening/master/docs/tweenGraphEaseinbounce.png)

pytweening.easeOutBounce()

![pytweening.easeOutBounce()](https://raw.githubusercontent.com/asweigart/pytweening/master/docs/tweenGraphEaseoutbounce.png)

pytweening.easeInOutBounce()

![pytweening.easeInOutBounce()](https://raw.githubusercontent.com/asweigart/pytweening/master/docs/tweenGraphEaseinoutbounce.png)

pytweening.easeInPoly() (default degree of 2)

![pytweening.easeInPoly()](https://raw.githubusercontent.com/asweigart/pytweening/master/docs/tweenGraphEaseinpoly.png)

pytweening.easeOutPoly() (default degree of 2)

![pytweening.easeOutPoly()](https://raw.githubusercontent.com/asweigart/pytweening/master/docs/tweenGraphEaseoutpoly.png)

pytweening.easeInOutPoly() (default degree of 2)

![pytweening.easeInOutPoly()](https://raw.githubusercontent.com/asweigart/pytweening/master/docs/tweenGraphEaseinoutpoly.png)


Support
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