From 8ed290f667202335f6509ca4eecf0abee9838ea5 Mon Sep 17 00:00:00 2001
From: Dario Sassi <dario.s@egaltech.com>
Date: Mon, 23 Dec 2019 14:57:37 +0000
Subject: [PATCH] EgtGeomKernel : - migliorati controlli in alcune funzioni di
 vector3d.

---
 Vector3d.cpp | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/Vector3d.cpp b/Vector3d.cpp
index 432ac05..3aa5a8b 100644
--- a/Vector3d.cpp
+++ b/Vector3d.cpp
@@ -397,6 +397,12 @@ Vector3d::LocToLoc( const Frame3d& frOri, const Frame3d& frDest)
 bool 
 Vector3d::GetAngle( const Vector3d& vtEnd, double& dAngDeg) const
 {
+  // verifico vettori
+   if ( IsZero()  ||  vtEnd.IsZero()) {
+      dAngDeg = 0 ;
+      return false ;
+   }
+
   // quantità ugualmente proporzionali a coseno e seno
    double dProSca = *this * vtEnd ;
    double dProVett = ( *this ^ vtEnd).Len() ;
@@ -418,6 +424,12 @@ Vector3d::GetAngle( const Vector3d& vtEnd, double& dAngDeg) const
 bool 
 Vector3d::GetAngleXY( const Vector3d& vtEnd, double& dAngDeg) const
 {
+  // verifico vettori
+   if ( IsZeroXY()  ||  vtEnd.IsZeroXY()) {
+      dAngDeg = 0 ;
+      return false ;
+   }
+
   // quantità ugualmente proporzionali a coseno e seno
    double dProSca = ScalarXY( *this, vtEnd) ;
    double dProVett = CrossXY( *this, vtEnd) ;