StellarCartography

An experimental astronomy library, written in Pharo.

Loading instructions

Starting from a Pharo image

Open a playground window (Ctrl+O+W) and evaluate:

Metacello new baseline: 'StellarCartography';
    repository: 'github://303adastra/StellarCartography:main';
    load.

Note: Evaluate by highlighting the text, then either right-click on the highlighted text and click Do it or press Ctrl+D.

Starting from the shell

Clone the repo:

git clone https://github.com/303adastra/StellarCartography.git
cd StellarCartography

Download the 64-bit Pharo image + VM into the StellarCartography directory and start the Pharo-UI:

curl get.pharo.org/64/stable+vm | bash
./pharo-ui Pharo.image

In the Pharo-UI, open a playground window (Ctrl+O+W) and evaluate:

Metacello new baseline: 'StellarCartography';
   repository: 'gitlocal://./src';
   load.

Note: Evaluate by highlighting the text, then either right-click on the highlighted text and click Do it or press Ctrl+D.

Example Usage

Once the StellarCartography package has been loaded into your Pharo image, you can highlight the following text in a Playground window and click 'Print it' or press 'Ctrl+P' to evaluate and print the Earth's rotation period:

|earth|
earth := SCEarth new.
earth rotationPeriod.

Note: Evaluating the above expression returns a Duration that prints as 0:23:56:04. Duration objects can also be expressed as a unit of time, e.g., earth rotationPeriod asSeconds.