new background grid and extended axis lines, fixes #1477

[melwyncarlo]

• Solved issue Add More Background Grids. #1477
• Created a new lines-based grid (mimicking AutoCAD)
• Provided option to switch grids
• Extended axis lines
• Provided option to extend axis lines

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Video link : https://youtu.be/hXNN_yvUyjs

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[jbergengh]

Those look nice! Won't compile for me though. Is it still in work?

[melwyncarlo]

@jbergengh Thank you very much! 😃

No, I had submitted a completed work; or so I thought.

When I reformatted the include headers, I got rid of #include <iostream>, considering it to be redundant. I didn't notice that there would be a cout command somewhere.

Regardless, I have replaced the cout command with the RS_Debug->print() command, which is used throughout the file anyway. I have compiled and tested it, and it works like a charm!

[ajk2196]

Thank you @melwyncarlo . You are a blessing! Hats off your dedication.

[melwyncarlo]

Thank you very much, @ajk2196 ! 😃