From 68f6e3ad44e99501274cf6bb85787f30b21b4f0b Mon Sep 17 00:00:00 2001
From: Seth Hillbrand <hillbrand@ucdavis.edu>
Date: Wed, 6 Jun 2018 22:51:01 -0700
Subject: [PATCH] pcbnew: Differential pairs obey netclass settings

PNS routing options allow trace width to be chosen by the assigned
netclass.  This extends that to differential pair width/gap settings as
well.

Fixes: lp:1672126
* https://bugs.launchpad.net/kicad/+bug/1672126
---
 pcbnew/router/pns_sizes_settings.cpp | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/pcbnew/router/pns_sizes_settings.cpp b/pcbnew/router/pns_sizes_settings.cpp
index 4dc94eab6d..58a158b981 100644
--- a/pcbnew/router/pns_sizes_settings.cpp
+++ b/pcbnew/router/pns_sizes_settings.cpp
@@ -124,6 +124,13 @@ void SIZES_SETTINGS::Init( BOARD* aBoard, ITEM* aStartItem, int aNet )
         m_viaDrill = bds.GetCurrentViaDrill();
     }
 
+    // Set the differential pair width/gap using netclass if selected
+    if( ( bds.UseNetClassTrack() && netClass != NULL ) )
+    {
+        m_diffPairWidth = netClass->GetDiffPairWidth();
+        m_diffPairGap = netClass->GetDiffPairGap();
+    }
+
     m_layerPairs.clear();
 }