From 90d116c6f509098f001bf1b10e8a58d081e46a14 Mon Sep 17 00:00:00 2001
From: Nyall Dawson <nyall.dawson@gmail.com>
Date: Mon, 2 May 2016 21:49:31 +1000
Subject: [PATCH] [cad] Fix invalid coordinates when x/y snapping is enabled
 and subsequent segments are parallel

---
 src/gui/qgsadvanceddigitizingdockwidget.cpp | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/gui/qgsadvanceddigitizingdockwidget.cpp b/src/gui/qgsadvanceddigitizingdockwidget.cpp
index 7297c41d4f45..f90f1960604a 100644
--- a/src/gui/qgsadvanceddigitizingdockwidget.cpp
+++ b/src/gui/qgsadvanceddigitizingdockwidget.cpp
@@ -677,7 +677,7 @@ bool QgsAdvancedDigitizingDockWidget::applyConstraints( QgsMapMouseEvent* e )
     }
     else if ( mXConstraint->isLocked() )
     {
-      if ( cosa == 0 )
+      if ( qgsDoubleNear( cosa, 0.0 ) )
       {
         res = false;
       }
@@ -693,7 +693,7 @@ bool QgsAdvancedDigitizingDockWidget::applyConstraints( QgsMapMouseEvent* e )
     }
     else if ( mYConstraint->isLocked() )
     {
-      if ( sina == 0 )
+      if ( qgsDoubleNear( sina, 0.0 ) )
       {
         res = false;
       }