From 77310576bd7d1fac4b3271aa0e17c00eb44667aa Mon Sep 17 00:00:00 2001
From: "andrea.villa" <andrea.villa@egalware.com>
Date: Mon, 23 Jun 2025 09:09:50 +0200
Subject: [PATCH] In LongDoubleCut, se taglio concavo rivolto verso il basso,
 gestione lavorazione con lama DownUp se macchina senza testa sotto

---
 LuaLibs/ProcessLongDoubleCut.lua | 33 ++++++++++++++++++++++++--------
 1 file changed, 25 insertions(+), 8 deletions(-)

diff --git a/LuaLibs/ProcessLongDoubleCut.lua b/LuaLibs/ProcessLongDoubleCut.lua
index 85d44a2..f64cc41 100644
--- a/LuaLibs/ProcessLongDoubleCut.lua
+++ b/LuaLibs/ProcessLongDoubleCut.lua
@@ -286,9 +286,11 @@ local function CalcBladeUse( bUseBlade, bDown_Head, nSide, vtN1, vtN2, bConvex,
                end
             end
          else
-            if ( vtN1 and vtN1:getZ() >= EgtIf( dCustomAngle, dCustomAngle, -0.5)) and ( not vtN2 or vtN2:getZ() >= -0.5) then
-               bCanUseBlade = true
-            end
+            --if ( vtN1 and vtN1:getZ() >= EgtIf( dCustomAngle, dCustomAngle, -0.5)) and ( not vtN2 or vtN2:getZ() >= -0.5) then
+            --   bCanUseBlade = true
+            --end
+            -- viene abilitata sempre lama da sotto
+            bCanUseBlade = true
          end
       end
    end
@@ -423,12 +425,22 @@ function ProcessLong2Cut.Make( Proc, nPhase, nRawId, nPartId, bForcedBladeMaster
    -- analisi del taglio
    local vOrd = {}
    local vFaceUse = {}
+   local bIsMachDownUp = false
    if nSide == 1 or ( nSide == -1 and ( BD.DOWN_HEAD or BD.TURN)) then
       vOrd = EgtIf( ptC[1]:getY() < ptRef:getY(), { 1, 2}, { 2, 1})
       vFaceUse = { BL.GetNearestOrthoOpposite( ptC[1] - ptM), BL.GetNearestOrthoOpposite( ptC[2] - ptM)}
    elseif nSide == -1 then
       vOrd = EgtIf( ptC[1]:getY() < ptRef:getY(), { 1, 2}, { 2, 1})
-      vFaceUse = { BL.GetNearestParalOpposite( ptC[1] - ptM), BL.GetNearestParalOpposite( ptC[2] - ptM)}
+      local vtFaceUse1, vtFaceUse2
+      if bCanUseBlade and not BD.DOWN_HEAD then
+         bIsMachDownUp = true
+         vtFaceUse1 = BL.GetOrtupOpposite( BL.GetNearestOrthoOpposite( ptC[1] - ptM))
+         vtFaceUse2 = BL.GetOrtupOpposite( BL.GetNearestOrthoOpposite( ptC[2] - ptM))
+      else
+         vtFaceUse1 = BL.GetNearestParalOpposite( ptC[1] - ptM)
+         vtFaceUse2 = BL.GetNearestParalOpposite( ptC[2] - ptM)
+      end
+      vFaceUse = { vtFaceUse1, vtFaceUse2}
    else
       local bFront = ( ( vtN[1]:getY() + vtN[2]:getY()) < 0)
       if bFront then
@@ -851,7 +863,7 @@ function ProcessLong2Cut.Make( Proc, nPhase, nRawId, nPartId, bForcedBladeMaster
                   -- imposto la direzione di lavoro per avere scarico del truciolo ottimale
                   local nWorkSide, bInvert
                   if ( not bIsTopBladeCurrent and abs( nSide) ~= 0) or ( bCanUseBlade and bCanUseUnderBlade and nSide == -1) then
-                     if bIsCurrentBladeCCW then
+                     if bIsCurrentBladeCCW and not bIsMachDownUp then
                         nWorkSide = MCH_MILL_WS.LEFT
                         bInvert = true
                         dSal, dEal = dEal, dSal
@@ -860,7 +872,7 @@ function ProcessLong2Cut.Make( Proc, nPhase, nRawId, nPartId, bForcedBladeMaster
                         bInvert = false
                      end
                   else
-                     if bIsCurrentBladeCCW then
+                     if bIsCurrentBladeCCW and not bIsMachDownUp then
                         nWorkSide = MCH_MILL_WS.LEFT
                         bInvert = false
                      else
@@ -1067,6 +1079,11 @@ function ProcessLong2Cut.Make( Proc, nPhase, nRawId, nPartId, bForcedBladeMaster
                if nSide == -1 and BD.DOWN_HEAD then
                   EgtSetMachiningParam( MCH_MP.STARTADDLEN, dEal)
                   EgtSetMachiningParam( MCH_MP.ENDADDLEN, dSal)
+               elseif nSide == -1 and not BD.DOWN_HEAD and bIsMachDownUp then
+                  EgtSetMachiningParam( MCH_MP.INVERT, EgtIf( EgtGetMachiningParam( MCH_MP.INVERT), false, true))
+                  dOffset = 5
+                  EgtSetMachiningParam( MCH_MP.STARTADDLEN, dEal)
+                  EgtSetMachiningParam( MCH_MP.ENDADDLEN, dSal)
                else
                   EgtSetMachiningParam( MCH_MP.STARTADDLEN, dSal)
                   EgtSetMachiningParam( MCH_MP.ENDADDLEN, dEal)
@@ -1368,7 +1385,7 @@ function ProcessLong2Cut.Make( Proc, nPhase, nRawId, nPartId, bForcedBladeMaster
                --EgtSetMachiningParam( MCH_MP.FACEUSE, EgtIf( bSide, BL.GetParallelOpposite( vFaceUse[vOrd[i]]), vFaceUse[vOrd[i]]))
                EgtSetMachiningParam( MCH_MP.FACEUSE, EgtIf( bSide, MCH_MILL_FU.PARAL_DOWN, vFaceUse[vOrd[i]]))
                -- imposto lato di lavoro e inversione
-               EgtSetMachiningParam( MCH_MP.WORKSIDE, MCH_MILL_WS.LEFT)
+               EgtSetMachiningParam( MCH_MP.WORKSIDE, EgtIf( bIsMachDownUp, MCH_MILL_WS.RIGHT, MCH_MILL_WS.LEFT))
                EgtSetMachiningParam( MCH_MP.INVERT, EgtIf( bSide, true, false))
                -- imposto offset radiale (nullo se concavo o di lato)
                local dOffsR = EgtIf( k < nO, ( nO - k) * dStep, EgtIf( bConvex, - BD.CUT_EXTRA, 0))
@@ -1804,7 +1821,7 @@ function ProcessLong2Cut.Make( Proc, nPhase, nRawId, nPartId, bForcedBladeMaster
                end
             end
             -- imposto lato di lavoro e inversione
-            EgtSetMachiningParam( MCH_MP.WORKSIDE, MCH_MILL_WS.LEFT)
+            EgtSetMachiningParam( MCH_MP.WORKSIDE, EgtIf( bIsMachDownUp, MCH_MILL_WS.RIGHT, MCH_MILL_WS.LEFT))
             EgtSetMachiningParam( MCH_MP.INVERT, true)
             -- calcolo la componente dNz non in base alla classificazione della feature (sopra, sotto, fianchi) ma alla componente maggiore 
 --            local dNz = EgtIf( nSide == 0, vtN[vOrd[i]]:getY(), vtN[vOrd[i]]:getZ())