More drawing tools

[djungelorm]

Move the basic drawing tools provided in SpaceCenter to a new service called Drawing and add a service called UI

Drawing service draws the following in the 3D scene. As a starting point, add support for:

• Line segments
• Polygons (a list of vertices)
• Text meshes

UI services draws and allows interaction with Unity UI elements. As a starting point, add support for:

• ScreenMessages.PostScreenMessage
• Panels
• Text labels (KER style)
• Input fields
• Buttons

Drawing/UI primitives should be returned as an object, so that the code can modify them. This will avoid the issues of the current approach which requires you to call ClearDrawing and redraw everything, causing flickering in game.

[mdfntr]

One feature that I feel is missing from kRPC is the ability to print text on the screen in the game. In my use of kRPC, it would save me the pain of switching from full-screen KSP to a terminal window to watch for log messages.

kOS implements the HUDTEXT function (https://github.com/KSP-KOS/KOS/blob/develop/src/kOS/Function/Misc.cs#L42) that leverages KSP's own text-displaying functions. Perhaps something similar could be added along with drawing functionality?

EDIT: It seems like accessing this functionality should be as easy as calling ScreenMessages.PostScreenMessage (https://anatid.github.io/XML-Documentation-for-the-KSP-API/class_screen_messages.html)

[djungelorm]

Looks like an almost trivial addition, thanks for the suggestion. I've added it to the list on the opening comment.

[djungelorm]

Quick update: I've got the line, polygon and text mesh rendering working nicely. Currently working on creating Unity UI objects, so that you will be able to instantiate text at arbitrarily positions on the sceen. Will allow you to do things similar to Kerbal Engineer Redux's HUD text.

[jwvanderbeck]

Will allow you to do things similar to Kerbal Engineer Redux's HUD text.

I absolutely love KERs flight HUDs and the ability to essentially make the same thing with my kRPC data will be golden!

[jwvanderbeck]

Having some trouble making this work. Not sure what I am doing wrong?

>>> connection = krpc.connect(name = "HUD", address="10.0.1.10", rpc_port=50000, stream_port=50001)
>>> vessel = connection.space_center.active_vessel
>>> t = connection.drawing.add_text("This is Text", vessel.reference_frame, (0,0,0), (0,0,0), True)

The add_text method never completes. It just hangs there.

[djungelorm]

OK, will try and reproduce. A bit busy at the moment though, so won't have time a look at this until later in the week.