round coordinates to integers in a few places

Dependencies

• [2] 65HNIAOS make freehand drawings smoother
• [3] XNFTJHC4 split keyboard handling between Text and Drawing
• [4] SRVDX4I5 local var
• [5] 6DE7RBZ6 move mouse_released events to Drawing
• [6] LF7BWEG4 group all editor globals
• [7] 3OTESDW6 move drawing.starty into line cache
• [8] QXVD2RIF add state arg to Drawing.mouse_released
• [9] LAW2O3NW extract variable Margin_left
• [10] VHQCNMAR several more modules
• [11] WTDKUACN rectangle and square shapes
• [12] WI7R44TD bugfix
• [13] UHB4GARJ left/right margin -> left/right coordinates
• [14] P5QNVXSN drop final mention of state global beyond main.lua
• [*] BLWAYPKV extract a module

Change contents

• replacement in drawing.lua at line 367
  [3.3172]→[3.3172:3243](∅→∅)
  − drawing.pending.radius = geom.dist(center.x,center.y, mx,my)
  [3.3172]

  [3.3243]
  + drawing.pending.radius = round(geom.dist(center.x,center.y, mx,my))
• replacement in drawing.lua at line 583
  [3.9531]→[3.9531:9624](∅→∅)
  − local thirdx = ((x-a*y) - a*c) / (a*a + 1)

  − local thirdy = (a*(-x + a*y) - c) / (a*a + 1)
  [3.9531]

  [3.9624]
  + local thirdx = round(((x-a*y) - a*c) / (a*a + 1))

  + local thirdy = round((a*(-x + a*y) - c) / (a*a + 1))
• replacement in drawing.lua at line 592
  [3.9966]→[3.9966:10081](∅→∅)
  − local fourthx = ((firstx-a*firsty) - a*c) / (a*a + 1)

  − local fourthy = (a*(-firstx + a*firsty) - c) / (a*a + 1)
  [3.9966]

  [3.10081]
  + local fourthx = round(((firstx-a*firsty) - a*c) / (a*a + 1))

  + local fourthy = round((a*(-firstx + a*firsty) - c) / (a*a + 1))
• replacement in drawing.lua at line 702
  [2.411]→[2.411:475](∅→∅)
  − b.x = (a.x + b.x + c.x)/3

  − b.y = (a.y + b.y + c.y)/3
  [2.411]

  [2.475]
  + b.x = round((a.x + b.x + c.x)/3)

  + b.y = round((a.y + b.y + c.y)/3)
• edit in drawing.lua at line 708
  [3.21510]

  [3.22708]
  + function round(num)

  + return math.floor(num+.5)

  + end

  +