qcha / tether Goto Github PK

Create model of Satellite and use it in project.

For first glance Satellite should use:

1. Mass.
2. Coordinates.
3. Velocity projections on axis.

After when we create model - we should rewrite all parts when it should be used.

Skeleton of model is in Model
Any additions?

All files in resource folder such as ExpModelDens and etc - have tab as delimiter.
It's bad practice - in our current case we can use comma as delimiter and work with CSV files.
CSV - is a standard file type, which have a lot of libs for parsing and using in prod.

For example CSV - it's a excel file basis.

Check it - CSV.

Why we should use it:

1. We can get external library for parsing it
2. We can use HEADERS in files and simple work with it.
3. We don't have tabs and spaces problem.

To solve this issue you can write script on Python or Java which converts our resource files to the CSV files.

UPDATE: @RomanWayne try to convert files to csv format.
Use ; - as delimiter.

Sometimes when we have error or warning and it will be really great if we show warning or error messagebox in that case. Unfortunately in javafx standard library we don't have ui messageboxes.

As i see we have two variants:

1. Write our own ui interface for it.
2. Find and use external library - it's common problem and i am sure that somebody wrote it.

I think we should start from second variant.

We can add README.md file - it's a description of our project.
In this file should be some sections/paragraphs like:

1. About.
2. How to use.
3. Libs and languages which we used.
4. Screenshot of application in work.

For example we can use:
README.md or README_2.md

In project there is a lot of constants in methods.
In every class we can see bunches of numbers and strings.

It's very bad approach - all constants should not be in methods.

I suggest to move all of this constants to static classes.
As example how-it-works:
Classes for constants

To sum up:
We should write something like:

public final class Constants {
   public static class Gravity {
            public static final String G = "9.8";
   }
}

And use it:

Constants.Gravity.G;

Package: com.github.qcha.animation
Class: Main
Problems:

1. All private methods in this class are duplicated each other.
2. Method start() is very messy.
3. All label or button names should be constants of Main class.
4. All numbers(window size and etc) should be constants of Main.class.
5. Main window should not be resizable - we need to draw usual window with fixed size, size of buttons should be equals each other.

Add logging with log configs to the project.

Remove all System.out.println debug scopes.

We should try to use special library for linear algebra.

First of all we can try to use:

1. la4j - (Dec, 2015), vers. - 0.6.0
2. Jblas -(May, 2015), vers. - 1.2.4
3. Efficient Java Matrix Library - (Jun, 2014), vers. - 0.25
4. JAMA - (Jun, 2013), vers. - 1.0.3

We need to compare speed, api and convenience in using.