Release Set time selection to envelope points (selected or around mouse cursor) v1.0

Time Selection/az_Set time selection to envelope points (selected or around mouse cursor).lua

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+-- @description Set time selection to envelope points (selected or around mouse cursor)
+-- @author AZ
+-- @version 1.0
+-- @link Forum thread https://forum.cockos.com/showthread.php?t=288069
+-- @about
+--   # Set time selection to envelope points (selected or around mouse cursor)
+--
+--   It works for regular envelopes, automation items and take envelopes.
+--   Selected points outside of visible arrange area will be ignored.
+--
+--   But if there are  several automation items at the same time, the most right of them will be used.
+--   It's a limitation of Reaper, it's impossible to find exact automation item under mouse.
+
+function msg(value)
+  reaper.ShowConsoleMsg(tostring(value)..'\n')
+end
+
+---------
+
+function main(env)
+
+ local envItem = reaper.GetEnvelopeInfo_Value(env, 'P_ITEM')
+ local startTS, endTS
+ local PointsTime = {}
+ local AiEdges = {}
+ local aiMouse
+ local prevP
+ local nextP
+ local itemPos = 0
+ local itemLen = 0
+ local takeRate = 1
+
+ if envItem ~= 0 then
+   itemPos = reaper.GetMediaItemInfo_Value(envItem, 'D_POSITION')
+   itemEnd = itemPos + reaper.GetMediaItemInfo_Value(envItem, 'D_LENGTH')
+
+   if mPos < itemPos or mPos > itemEnd then return end
+
+   local envTake = reaper.GetActiveTake(envItem)
+   takeRate = reaper.GetMediaItemTakeInfo_Value(envTake, 'D_PLAYRATE')
+ end
+
+ local aicnt = reaper.CountAutomationItems(env)
+ for i=0, aicnt -1 do
+
+   local aiPos = reaper.GetSetAutomationItemInfo( env, i, 'D_POSITION', 0, false )
+   local aiLen = reaper.GetSetAutomationItemInfo( env, i, 'D_LENGTH', 0, false )
+   table.insert(AiEdges, aiPos)
+   table.insert(AiEdges, aiPos+aiLen)
+
+   if aiPos < mPos and aiPos + aiLen > mPos then
+     aiMouse = i
+   end
+
+   local pcnt = reaper.CountEnvelopePointsEx(env, i)
+   for k=0, pcnt -1 do
+     local ret, ptime, _, _, _, selected = reaper.GetEnvelopePointEx( env, i, k )
+     if ret and ptime >= arStart and ptime <= arEnd and selected == true then
+       table.insert(PointsTime, ptime)
+     end
+   end
+
+ end
+
+
+ local pcnt = reaper.CountEnvelopePoints(env)
+ for i=0, pcnt -1 do
+   local ret, ptime, _, _, _, selected = reaper.GetEnvelopePoint( env, i )
+
+   if envItem ~= 0 then ptime = ptime / takeRate + itemPos end
+
+   if ret and ptime >= arStart and ptime <= arEnd and selected == true then
+     if itemPos ~= itemLen then
+       if ptime >= itemPos and ptime <= itemEnd then
+         table.insert(PointsTime, ptime)
+       end
+     else table.insert(PointsTime, ptime)
+     end
+   end
+
+   if ptime < mPos then prevP = ptime end 
+   if ptime > mPos and not nextP then nextP = ptime end
+
+ end
+
+ if envItem ~= 0 then
+   if not prevP then prevP = itemPos end
+   if not nextP then nextP = itemEnd end
+
+   if itemPos > prevP then prevP = itemPos end
+   if itemEnd < nextP then nextP = itemEnd end
+ end
+
+ if not aiMouse then
+   table.sort(AiEdges)
+   for i, v in ipairs(AiEdges) do
+     if v < mPos and v > prevP then prevP = v end
+     if v > mPos and ( not nextP or v < nextP ) then nextP = v end
+   end
+ end
+
+
+ if #PointsTime <= 1 then
+   if aiMouse then
+
+     local aiPos = reaper.GetSetAutomationItemInfo( env, aiMouse, 'D_POSITION', 0, false )
+     local aiLen = reaper.GetSetAutomationItemInfo( env, aiMouse, 'D_LENGTH', 0, false )
+     prevP = aiPos
+     nextP = nil
+
+     local pcnt = reaper.CountEnvelopePointsEx(env, aiMouse)
+     for i=0, pcnt -1 do
+       local ret, ptime, _, _, _, selected = reaper.GetEnvelopePointEx( env, aiMouse, i )
+
+       if ptime < mPos then prevP = ptime end
+       if ptime > mPos and not nextP then nextP = ptime end 
+     end
+
+     if not nextP then nextP = aiPos + aiLen end
+   end
+
+   if not prevP then prevP = mPos end
+   if not nextP then nextP = mPos end
+
+   startTS = prevP
+   endTS = nextP
+   UndoString = "Set TS to a pair of envelope points around mouse"
+ else
+
+   table.sort(PointsTime)
+   startTS = PointsTime[1]
+   endTS = PointsTime[#PointsTime]
+
+   UndoString = "Set TS to selected envelope points"
+ end
+
+ if UndoString then
+   _,_ = reaper.GetSet_LoopTimeRange2(0, true, false, startTS, endTS, false)
+ end
+
+end
+
+------------
+------------
+
+mPos = reaper.BR_PositionAtMouseCursor(false)
+arStart, arEnd = reaper.GetSet_ArrangeView2(0, false, 0, 0, 0, 0)
+local selenv
+
+local x,y = reaper.GetMousePosition()
+local track, info = reaper.GetThingFromPoint(x, y)
+
+if info:match('envelope') == 'envelope' then
+  selenv = reaper.GetTrackEnvelope(track, info:match('%d+'))
+end
+
+if not selenv then
+  selenv = reaper.GetSelectedEnvelope(0)
+end
+
+if selenv then
+  reaper.PreventUIRefresh(1)
+  reaper.Undo_BeginBlock2(0)
+  main(selenv)
+end
+
+if UndoString then
+  reaper.Undo_EndBlock2( 0, UndoString, -1 )
+  reaper.UpdateArrange()
+else reaper.defer(function()end)
+end