-- Intestazioni
require( 'EgtBase')
_ENV = EgtProtectGlobal()
EgtEnableDebug( true)

-- recupro il primo oggeto (da modificare)
local nId = EgtGetFirstSelectedObj()
-- recupero il secondo oggetto (rispetto al quale riferirsi)
local nId2 = EgtGetNextSelectedObj()

local PAR = {}

_G.PAR = PAR

PAR.nId1 = -1
PAR.Pt1 = Point3d(0,0,0)
PAR.dU1 = 0.0
PAR.nId2 = -1
PAR.Pt2 = Point3d(0,0,0)
PAR.dU2 = 0.0
PAR.nSubCrv1 = 0
PAR.nSubCrv2 = 0

PAR.Len = 0.0

PAR.vtMove = Vector3d(0,0,0)

local function ErasePoint( Id)
   local IdPt1 = EgtGetInfo(Id, 'DrawPoint', 'i')
   EgtErase( IdPt1)
end
--
local function DrawPoint( Id, Pt, sCol)
   if Id > -1 then
      ErasePoint( Id)
      local Lay = EgtGetParent( Id)
      local IdPt1 = EgtPoint( Lay, Pt, GDB_RT.GLOB)
      EgtSetColor( {IdPt1}, EgtStdColor( sCol))
      EgtSetInfo( Id, 'DrawPoint', IdPt1)
      EgtSelectObj( IdPt1)
      EgtDraw()
   end
end
--
function PAR.DrawFirstPoint()
   if PAR.nId1 > -1 then
      DrawPoint( PAR.nId1, PAR.Pt1, 'RED')
   end
end
--
function PAR.DrawSecondPoint()
   if PAR.nId2 > -1 then
      DrawPoint( PAR.nId2, PAR.Pt2, 'BLUE')
   end
end
--
-- Accosto due linee
function PAR.LinksLine()
   local vtMove = Point3d(PAR.Pt2) - Point3d(PAR.Pt1)
   PAR.vtMove = vtMove
   EgtMove( {PAR.nId1}, vtMove, GDB_RT.GLOB)
   ErasePoint( PAR.nId1)
   ErasePoint( PAR.nId2)
   EgtDraw()
end
--
-- Ottenco una curva compisita (non posso tornare indietro)
function PAR.JointLine()
   EgtCurveCompoByChain( EgtGetParent(PAR.nId1), {PAR.nId1,PAR.nId2}, Point3d(PAR.Pt2), true, GDB_RT.GLOB)
   PAR.Reset()
   EgtDraw()
end
--
-- Riposiziono il primo segmento nel punto di partenza
function PAR.UndoLinksLine()
   if PAR.nId1 > -1 then
      EgtMove( {PAR.nId1}, PAR.vtMove*(-1), GDB_RT.GLOB)
   end
end
--

local function EraseLinearDimension()
   local IdDimension = EgtGetInfo( PAR.nId1, 'LinearDim'..tostring(PAR.nSubCrv1), 'i')
   EgtErase( IdDimension) 
end
--

function PAR.DrawLinearDimension()
   EraseLinearDimension()
   local vtDir = EgtSV( PAR.nId1, GDB_RT.GLOB)
   vtDir:rotate({0,0,1}, 90)
   
   local ptStart = EgtUP( PAR.nId1, PAR.nSubCrv1, GDB_RT.GLOB)
   local ptEnd = EgtUP( PAR.nId1, (PAR.dU1 == PAR.nSubCrv1 and PAR.nSubCrv1 + 1 or PAR.dU1), GDB_RT.GLOB)
   local IdDimension = EgtAlignedDimension( EgtGetParent(PAR.nId1), ptStart, ptEnd,vtDir * 50,'<>',GDB_RT.GLOB)
   EgtSetInfo( PAR.nId1, 'LinearDim'..tostring(PAR.nSubCrv1), IdDimension)
   ErasePoint( PAR.nId1)
   EgtDraw()
end
--

function PAR.LinearDimension()
   if PAR.nId1 == -1 then return end
   
   local dFinalLen = tonumber( PAR.Len )
   if PAR.dU1 == PAR.nSubCrv1 then
      local vtDir = EgtUV( PAR.nId1, PAR.nSubCrv1+0.1, GDB_RT.GLOB)
      local dStartLen = dist(EgtUP( PAR.nId1, PAR.dU1, GDB_RT.GLOB), EgtUP( PAR.nId1, PAR.dU1 + 1, GDB_RT.GLOB))
      vtDir = vtDir * ( dFinalLen - dStartLen) * (-1)
      local NewStartPoint = EgtUP( PAR.nId1, PAR.dU1, GDB_RT.GLOB) + vtDir
      if not (EgtGetType(PAR.nId1) == GDB_TY.CRV_COMPO) then
         EgtModifyCurveStartPoint( PAR.nId1, NewStartPoint, GDB_RT.GLOB)
      else
         EgtModifyCurveCompoJoint( PAR.nId1, PAR.dU1, NewStartPoint, GDB_RT.GLOB)
      end
   else
      local vtDir = EgtUV( PAR.nId1, PAR.nSubCrv1+0.1, GDB_RT.GLOB)
      local dStartLen = dist(EgtUP( PAR.nId1, PAR.dU1, GDB_RT.GLOB), EgtUP( PAR.nId1, PAR.nSubCrv1, GDB_RT.GLOB))
      vtDir = vtDir * ( dFinalLen - dStartLen)
      local NewEndPoint = EgtUP( PAR.nId1, PAR.dU1, GDB_RT.GLOB) + vtDir
      if not (EgtGetType(PAR.nId1) == GDB_TY.CRV_COMPO) then
         EgtModifyCurveEndPoint( PAR.nId1, NewEndPoint, GDB_RT.GLOB)
      else
         EgtModifyCurveCompoJoint( PAR.nId1, PAR.dU1, NewEndPoint, GDB_RT.GLOB)
      end
   end   
end
--

local function EraseAngularDimension()
   local IdDimension = EgtGetInfo( PAR.nId1, 'AngularDim', 'i')
   EgtErase( IdDimension)
end
--

function PAR.DrawAngularDimension()
   EraseAngularDimension()
   local vtDir = EgtSV( PAR.nId1, GDB_RT.GLOB)
   local vtDir1 = Vector3d(1,0,0)
   if nId2 then
      vtDir1 = EgtSV( PAR.nId2, GDB_RT.GLOB)
   end  
   IdDimension = EgtAngularDimension( EgtGetParent(PAR.nId1),EgtSP(PAR.nId1, GDB_RT.GLOB),EgtSP(PAR.nId1, GDB_RT.GLOB) + vtDir1,EgtSP(PAR.nId1, GDB_RT.GLOB) + vtDir, vtDir*50,'<>',GDB_RT.GLOB)
   EgtSetInfo( nId, 'AngularDim', IdDimension)
   EgtDraw()
end
--

function PAR.AngularDimension()
   local vtDir = EgtUV( PAR.nId1, PAR.nSubCrv1+0.1, GDB_RT.GLOB)
   if PAR.nId2 then
      vtDir1 = EgtSV( PAR.nId2, GDB_RT.GLOB)
   end
   local dStartAng = GetRotation(vtDir, vtDir1, Z_AX())
   local vsAng = PAR.Ang
   local dFinalAng = tonumber( vsAng)
   local ptAx = EgtUP(PAR.nId1, PAR.dU1, GDB_RT.GLOB)
   EgtRotate({PAR.nId1},ptAx,Z_AX(), math.abs(dFinalAng-dStartAng),GDB_RT.GLOB)
end

function PAR.Reset()
   ErasePoint( PAR.nId1)
   PAR.nId1 = -1
   PAR.Pt1 = Point3d(0,0,0)
   PAR.dU1 = 0.0
   ErasePoint( PAR.nId2)
   PAR.nId2 = -1
   PAR.Pt2 = Point3d(0,0,0)
   PAR.dU2 = 0.0
   PAR.nSubCrv1 = 0
   PAR.nSubCrv2 = 0
end
--

local function SelectConstraint(sMsgComboBox)
   local vsVal = EgtDialogBox( 'Select constraint', 
                             { 'Show', sMsgComboBox})                        
   if not vsVal then return end
   
   local Constraint = string.gsub( vsVal[1], '%s+', '')
   if Constraint == 'Startpoint' then
      TabConstraint.Stp = 'FIXED'
      if nId2 then
         local vsSelPt = EgtDialogBox( 'Type of joint?', 
                                     { 'Show', 'CB:* Start-End, Start-Start, End-Start, End-End'})  
         local FinalPonint = EgtEP( nId2, GDB_RT.GLOB)
         local StartPoint = EgtSP( nId, GDB_RT.GLOB)                    
         if vsSelPt then
            if vsSelPt[1] == 'Start-Start' then
               FinalPonint = EgtSP( nId2, GDB_RT.GLOB)
            elseif vsSelPt[1] == 'End-Start' then
               FinalPonint = EgtSP( nId2, GDB_RT.GLOB)
               StartPoint = EgtEP( nId, GDB_RT.GLOB)
            elseif vsSelPt[1] == 'End-End' then
               StartPoint = EgtEP( nId, GDB_RT.GLOB) 
            end
         end
         EgtSetInfo(nId2, StP, 'LINKED')
         local vtMove = FinalPonint - StartPoint
         EgtMove(GetLinkedLine(), vtMove, GDB_RT.GLOB)
         -- EgtAddCurveCompoCurve
         TabConstraint.Stp = 'LINKED'
      end  
      
   elseif Constraint == 'Lenght' then
      TabConstraint.Len = 'FIXED'
      local dStartLen = EgtCurveLength( nId)
      local vsLen = EgtDialogBox( 'Define constraint value', 
                                { 'Lenght', tostring(dStartLen)})
      if vsLen then 
         local vtDir = EgtSV( nId, GDB_RT.GLOB)
         local dFinalLen = tonumber( vsLen[1])
         vtDir = vtDir * ( dFinalLen - dStartLen)
         local NewEndPoint = EgtEP( nId, GDB_RT.GLOB) + vtDir
         EgtModifyCurveEndPoint( nId, NewEndPoint, GDB_RT.GLOB)
      end
      
   elseif Constraint == 'Direction' then
      TabConstraint.Dir = 'FIXED'
      local vtDir = EgtSV( nId, GDB_RT.GLOB)
      local vtDir1 = Vector3d(1,0,0)
      if nId2 then
         vtDir1 = EgtSV( nId2, GDB_RT.GLOB) * (-1)
      end   
      local dStartAng = math.acos( vtDir*vtDir1) * 180 / math.pi
      local vsAng = EgtDialogBox( 'Define constraint value', 
                                { 'Angle', tostring(dStartAng)})
      if vsAng then 
         local dFinalAng = tonumber( vsAng[1])
         EgtRotate({nId},EgtSP(nId, GDB_RT.GLOB),{0,0,1}, math.abs(dFinalAng-dStartAng),GDB_RT.GLOB)
         vtDir = EgtSV( nId, GDB_RT.GLOB)
      end
   end   
end
--