Hi Ken
this your program have made steps towards on!
I hope that my feedbacks are useful:
1.Splashscreen in opening:
can I suggest to use different frames or colors to separate the logical sections of Opening Splashscreen?
2. Color setting:
can the user get more informations about how to use the Color Setting window?
What is the box with gradients at bottom?
How can I use them?
3.
It is not clear for me new beginner user that with the keyboard I can select the action to do and with mouse I can only draw. Moreover I have learned after attempts that I must press keyboard to select and then again to UNselect the same tool/action
4.
It is not clear for me new beginner user that to draw an Orbit first I must put the pointer of mouse in the place where is the center of the Orbit that I want draw, and I must press key "O"
In other program you select the tool and then you click to start drawing it and then drag until releasing the button of mouse to stop drawing.
5.
I start to Draw a line with free hand, then I try to draw a Rays and magically the thickness of the line is very different!
5.1 Why not the same thickness of line?
5.2 How to increase /decreadse the thickness of the line drawn?