Touch OSC Global Fader

README.md

Touch OSC Global Fader

Add the contents of globalFader.lua to your global fader. Each child fader will need the childFader.lua script and their name prefixed with the faderPrefix found in globalFader.lua The default is childFader

childFader.lua

local receiveValue = 'x'

function onReceiveNotify(key, value)
  if (key == 'globalFader') then
    self.values[receiveValue] = value
  end
end

globalFader.lua

local allNodes = {}
local childNodes = {}
local sendValue = 'x'
local faderPrefix = 'childFader'

function traverseTree(group)
  local nodes = {}
  for i=1, #group.children do
    if group.children[i].type == ControlType.GROUP        -- when a subgroup is found
    or group.children[i].type == ControlType.PAGER then
      local children = traverseTree(group.children[i])     -- recursion with the current subgroup
      for j=1, #children do
        table.insert(nodes, children[j])
      end
    end
    table.insert(nodes, group.children[i])
  end
  return nodes
end

function notifyNodes(nodes)
  for i=1, #nodes do
    local node = nodes[i]
    node:notify('globalFader', self.values[sendValue])
  end
end

function init()
  allNodes = traverseTree(root)
  local childCount = 0
  for i=1, #allNodes do
    local node = allNodes[i]
    if ((node.name ~= nil) and (node.name:find(faderPrefix, 1, true) == 1)) then
      childCount = childCount + 1
      childNodes[childCount] = node
    end
  end
  notifyNodes(childNodes)
end


function onValueChanged(key)
  if (key == sendValue) then
    notifyNodes(childNodes)
  end
end