Salabim

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Improved way of animating circles. Also, now support for offset (most useful in combination with angle).
Better support for transparency(alpha blending) for fill and line colors.

Bugs fixed.

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The classes AnimateCircle, AnimateLine, AnimatePolygon, AnimateRectangle, AnimateImage and AnimateText are now all combined in one class: Animate.
All animations, including images now support scaling and rotation. Also, under Pythonista, convave polygons are now available.
All animation objects support semi-transparency (also called alpha blending or opacity).
Salabim now requires PIL (Pillow) for animations.

Bugs fixed.

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Animation on iPad / Pythonista now supported.
Button and slider animation objects now available without the need to use tkinter functions.
Button and slider animation objects are now also available under Pythonista.
All functions are now documented as docstrings.

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SalabimQueue, SalabimComponent, SalabimResource and SalabimEnvironment as well as distribution now feature __repr__, in order to print the contents of the object.
Thus,e.g., print(q1) now print information of the contents of q1

Now any environment may be reset to initial condition, with reset_env().
The function salabim_reset is renamed into reset_env, which is equivalent to default_env.reset_env()
Environments now have a (optionally serialized) name.

In order to make the usage of the default environment, a number of functions have been changed into global variables:
default_env
main

Please observe that these variables should *NEVER* be set by the user.
Tracing of the default environment is still controlled via the trace function or the setter/getter default_env.trace.
Also, now() and current_component() are still to be used to access now and current_component for the default_env.
Alternatively, now, current_component and trace can be accessed directly via the setter/getter of any SalabimComponent.

The function show() of a SalabimQueue has been renamed to print_statistics() and will no longer show the contents of a queue. In order to print the contents of a queue just use print(q).

Introduced a parameter 'reason' for passivate(). A program can now check why a component is passive by means of the property passive_reason. If a component is not passive, passive_reason is None.

Extensive support for animation with tkinter.

Bugs fixed.

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Bug in standby fixed.

When the name of a component is derived from the class name, the name is now serialized, e.g.
s=Ship()
print(s.name)
will print
Ship...............1

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Overhaul of the way randomstreams are used with the Salabim distributions.
Now, instead of a seed, all distibutions can be given a randomstream. If this parameter is omitted, the default randomstream called salabim_random will be used.
This salabim_randomstream will be automatically started with a reproducable seed, i.e. -1.
The user may reseed this distribution with salabim_random.seed(seed) or salabim_random.seed() for a system time dependent (not reproducable) stream.
If the user does not want to use the salabim_random stream, all distributions may be called with something like randomstream=random.Random(11000) or randomstream=mystream.
Please note that the randomstream salabim_random may be (and is recommended to be) used by the native Random sampling routines, like random, shuffle, gauss and sample.


This version contains an extensive animation engine, that is not yet fully tested nor documented. This functionality will be soon available, along with several examples. The animation engine will be fully available on CPython and Pythonista platforms with tkinter and PIL (Pillow) installed and and with limited functionality when PIL (Pillow) is not available like in PyPy.