From 6117583a794d43a503e50e17d2a7ad525e95b729 Mon Sep 17 00:00:00 2001
From: SaraP <sara.perdoncin@egalware.com>
Date: Wed, 1 Feb 2023 11:03:24 +0100
Subject: [PATCH] 3dPrinting : - aggiunto offset lead point anche per shell
 interne quando non ci sono collegamenti.

---
 LuaLibs/CalcToolPath.lua | 37 +++++++++++++++++++++++++++----------
 1 file changed, 27 insertions(+), 10 deletions(-)

diff --git a/LuaLibs/CalcToolPath.lua b/LuaLibs/CalcToolPath.lua
index 01732cf..eade0d3 100644
--- a/LuaLibs/CalcToolPath.lua
+++ b/LuaLibs/CalcToolPath.lua
@@ -169,6 +169,30 @@ local function AddLink( vCrv, nTpathGrpId, nLinkType, dLinkParam, dSPOffs, dStra
    end
 end
 
+---------------------------------------------------------------------
+local function AddOffsetLeadPoint( vIds, nFirstCopy, dOffsetLP, nLinkType)
+
+   -- se link va fatto solo sulla shell esterna
+   local nLast = EgtIf( nLinkType == LINK_TYPE.NONE, #vIds, 1)
+   
+   if abs( dOffsetLP) > GEO.EPS_SMALL then
+      for i = 1, nLast do
+         if dOffsetLP > GEO.EPS_SMALL then
+            -- taglio curva
+            EgtTrimCurveStartAtLen( vIds[i], dOffsetLP)
+         else
+            -- è necessario aggiungere un tratto
+            local nAddCrv = EgtCopyGlob( EgtIf( i == 1, nFirstCopy, vIds[i]), vIds[1], GDB_IN.AFTER)
+            EgtTrimCurveStartAtLen( nAddCrv, EgtCurveLength( nAddCrv) - abs( dOffsetLP))
+            EgtAddCurveCompoCurve( vIds[i], nAddCrv, true, false)
+         end
+      end
+   end
+
+   -- elimino curva aux usata per prima shell
+   EgtErase( nFirstCopy)
+end
+
 --------------------------------------------------------------------
 local function AddLeadIn( nCrvId, LayerParams, nGrpId)
  
@@ -353,20 +377,13 @@ local function CalcShellsToolPath( vEntIds, nTpathGrpId, LayerParams, dCorrZ)
    
    -- aggiungo le curve nel toolpath
    local vIds = AddCurvesToToolPath( vEntIds, nTpathGrpId, LayerParams.nOrder, LayerParams.bInvert, LayerParams.vtSlicing, LayerParams.dLayHeight, dCorrZ)
-   local nFirstCopy = EgtCopyGlob( vIds[1], nTpathGrpId)
+   local nFirstCopy = EgtCopyGlob( vIds[1], nTpathGrpId)   -- necessaria per corretto offset lead point sulla shell esterna
    
    -- aggiungo gli opportuni raccordi
    AddLink( vIds, nTpathGrpId, LayerParams.nLinkType, LayerParams.dLinkParam, LayerParams.dSPOffs, LayerParams.dStrand, LayerParams.vtSlicing)
    
-   -- offset lead point curva iniziale
-   if LayerParams.dOffsetLP > - GEO.EPS_SMALL then
-      EgtTrimCurveStartAtLen( vIds[1], LayerParams.dOffsetLP)
-      EgtErase( nFirstCopy)
-   else
-      -- devi aggiungere un tratto di curva
-      EgtTrimCurveStartAtLen( nFirstCopy, EgtCurveLength( nFirstCopy) - abs( LayerParams.dOffsetLP))
-      EgtAddCurveCompoCurve( vIds[1], nFirstCopy, true, false)
-   end
+   -- offset lead point
+   AddOffsetLeadPoint( vIds, nFirstCopy, LayerParams.dOffsetLP, LayerParams.nLinkType)
    
    -- aggiungo leadin/leadout
    if LayerParams.nLeadInType ~= LEAD_TYPE.NONE then