Thinking about doing a LDCad 1.7 version

[Roland Melkert]

Yep, I think so too. Like I said, the perfect starter project if I find myself with no other plates spinning. 

It's a fairly simple one if you assume it's on the abs yz plane

Code:

function onRun()

  local sel=ldc.selection()
  if sel:getRefCount()<3 then
    return
  end

  local a=sel:getRef(1):getPos()
  local b=sel:getRef(2):getPos()
  local c=sel:getRef(3):getPos()

  a:setX(0)
  b:setX(0)
  c:setX(0)
  c:setY(b:getY())

  local ab=a:getLength(b)
  local bc=b:getLength(c)

  local bb1=ldc.vector(1,0,0):getSignedAngle(a-b, c-b)
  local bb2=math.deg(math.acos(bc/ab))

  local angle=-(bb1-bb2)
  ldc.setClipboardText(angle)

  ldc.dialog.runMessage(angle)
end

function register()

  local macro=ldc.macro('My macro')
  macro:setEvent('run', 'onRun')
end

register()

Could use some more cleanups and dummy proof checks though

It gave me the idea to add access to the relative grid in 1.7, so thanks for that