Graphics Library

Hello all.

This API provides developers with functions to draw things on the screen.

Functions:

• drawPoint(x,y,color) - Sets one pixel/character on the screen
• drawLine(start, end, color) - Draws a line from the first pair of coordinates to the second pair of coordinates
• drawRect(corner1, corner2, color, fill) - Draws a rectangle. Can be filled if needed.
• drawCircle(midpoint, radius, color) - Draws a circle.
• floodFill(startPoint, color) - Fills an area with a color.
• writeText(text, start, color) - writes text starting from (start[1], start[2])
• update() - Draws the contents of the internal buffer to screen.
• resetSurface() - Resets the internal buffer.
• resetScreen() - Clears the screen and changes the colors back to default.

Usage Notes:

• Points are taken as tables. Example:

  
  myPoint = {5,9}
  

• The color argument can actually be two things: a number (such as colors.red), or a table.
• When a color argument is a number, it is assumed to be a constant from the colors API.
• However, if it is a table, then it assumes that you're trying to write text to the screen.
• When passing tables to the drawing functions, please ensure that the tables are in this format:

  
  {textColor, character}
  

• You need to call update after drawing everything to screen, or else you won't see anything happen.
• resetScreen is defined as such:

  
  function resetScreen()
  	term.setTextColor(colors.white)
  	term.setBackgroundColor(colors.black)
  	term.clear()
  	term.setCursorPos(1,1)
  end
  

• Surfaces are meant to be used internally;

  drawPoint(1,1,colors.red)

  is equivalent to

  drawSurfaces[1][1][1] = colors.red

  , and

  drawPoint(1,1,{colors.red, "-"})

  is equivalent to

  drawSurfaces[2][1][1] = {colors.red, "-"}

  .

Downloads:
Graphics API on Pastebin

Graphics API Demo on Pastebin

or, alternatively:

For the API itself:

pastebin get vanFtbrA GraphicsAPI

and for the demo:

pastebin get b6KNBv7D demo

Any documentation on it, such as for use of the surface, or packXY()?

tommyroyall, on 26 November 2012 - 04:45 AM said:

Any documentation on it, such as for use of the surface, or packXY()?

I thought that I included docu— whoops

I'm going to write documentation now.
Also, the surface is meant to be used internally.

Ok :)/>. In total, amazing man :D/>. Thanks.

I was going to write documentation, but then I realized that I had written documentation.

Hey mate,

If I try to send your demo to my external advanced monitor (4x wide, 3x high) using [monitor left demo], I get the following error on the monitor:
GraphicsAPI:12: index expected, got nil

if I just run the demo on the advanced computer itself, it all works correctly. Do you have any thoughts as to what the problem would be?

Cheers.