From ad5c015b46ece5e8092eeb3efa652a1e7054e829 Mon Sep 17 00:00:00 2001
From: Dario Sassi <dario.s@egaltech.com>
Date: Wed, 23 May 2018 13:29:17 +0000
Subject: [PATCH] EgtMachKernel : - ApproxWithArcsIfUseful in milling e
 pocketing solo se curve piane o quasi.

---
 Operation.cpp | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/Operation.cpp b/Operation.cpp
index 20c2559..f0db14e 100644
--- a/Operation.cpp
+++ b/Operation.cpp
@@ -643,6 +643,12 @@ Operation::ApproxWithArcsIfUseful( ICurveComposite* pCompo)
    int nCrvs = pCompo->GetCurveCount() ;
    if ( nCrvs < 5  ||  dLen > nCrvs * LIN_FEA_STD)
       return true ;
+  // limito l'approssimazione alle curve piane
+   Frame3d frRef ;
+   frRef.Set( ORIG, vtExtr) ;
+   BBox3d b3Crv ;
+   if ( ! pCompo->GetBBox( frRef, b3Crv)  ||  ! b3Crv.IsEpsilonZ( 100 * EPS_SMALL))
+      return true ;
   // calcolo approssimazione con archi (se possibile)
    PolyArc PA ;
    if ( ! pCompo->ApproxWithArcsEx( LIN_TOL_MID, ANG_TOL_STD_DEG, LIN_FEA_STD, PA))