From 08aea29ffa3281ee43ca99c97ca8de6b160a1855 Mon Sep 17 00:00:00 2001
From: Paolo Cignoni cignoni <paolo.cignoni@isti.cnr.it>
Date: Wed, 9 Jan 2008 00:31:22 +0000
Subject: [PATCH] using the mouse MidButton on a vertex will now clear it
 (white color and "Unknown" selection value)

---
 src/meshlabplugins/editsegment/editsegment.cpp | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/meshlabplugins/editsegment/editsegment.cpp b/src/meshlabplugins/editsegment/editsegment.cpp
index 91ba51dd2..444bcff7c 100644
--- a/src/meshlabplugins/editsegment/editsegment.cpp
+++ b/src/meshlabplugins/editsegment/editsegment.cpp
@@ -382,10 +382,14 @@ void EditSegment::Decorate(QAction * ac, MeshModel & m, GLArea * gla) {
 				meshCut->Mark(*vi, iF);
 				(*vi)->C()
 					= toVcgColor(meshCutDialog->getForegroundColor());
-			} else {
+			} else if (mouse_button_pressed==Qt::RightButton ){
 				meshCut->Mark(*vi, iB);
 				(*vi)->C()
 					= toVcgColor(meshCutDialog->getBackgroundColor());
+			} else if (mouse_button_pressed==Qt::MidButton) {
+				meshCut->Mark(*vi, U);
+				(*vi)->C()
+					= toVcgColor(Qt::white);
 			}
 
 		}