added nav-mesh support to indoor-map

some fixes/changes

MainWindow.ui

@@ -23,30 +23,31 @@
      <x>0</x>
      <y>0</y>
      <width>777</width>
-     <height>26</height>
+     <height>30</height>
     </rect>
    </property>
    <widget class="QMenu" name="menuView">
     <property name="title">
-     <string>View</string>
+     <string>&amp;View</string>
     </property>
     <widget class="QMenu" name="menu3D">
      <property name="title">
-      <string>3D</string>
+      <string>&amp;3D</string>
      </property>
      <addaction name="actShow3DFloorplan"/>
      <addaction name="actShow3DGrid"/>
+     <addaction name="actShow3DNavMesh"/>
     </widget>
     <addaction name="actShow2D"/>
     <addaction name="menu3D"/>
    </widget>
    <widget class="QMenu" name="menuGridf">
     <property name="title">
-     <string>Grid</string>
+     <string>&amp;Grid</string>
     </property>
     <widget class="QMenu" name="menuNode_color">
      <property name="title">
-      <string>node color</string>
+      <string>&amp;node color</string>
      </property>
      <addaction name="actGridNodeColorType"/>
      <addaction name="actGridNodeColorImportance"/>
@@ -62,15 +63,18 @@
     <bool>true</bool>
    </property>
    <property name="text">
-    <string>2D</string>
+    <string>&amp;2D</string>
    </property>
   </action>
   <action name="actShow3DFloorplan">
    <property name="checkable">
     <bool>true</bool>
    </property>
+   <property name="checked">
+    <bool>true</bool>
+   </property>
    <property name="text">
-    <string>Floorplan</string>
+    <string>&amp;Floorplan</string>
    </property>
   </action>
   <action name="actGridShowEdges">
@@ -78,7 +82,7 @@
     <bool>true</bool>
    </property>
    <property name="text">
-    <string>show edges</string>
+    <string>&amp;show edges</string>
    </property>
   </action>
   <action name="actGridNodeColorType">
@@ -86,7 +90,7 @@
     <bool>true</bool>
    </property>
    <property name="text">
-    <string>node type</string>
+    <string>&amp;node type</string>
    </property>
   </action>
   <action name="actGridNodeColorImportance">
@@ -94,7 +98,7 @@
     <bool>true</bool>
    </property>
    <property name="text">
-    <string>node importance</string>
+    <string>node &amp;importance</string>
    </property>
   </action>
   <action name="actShow3DGrid">
@@ -102,7 +106,20 @@
     <bool>true</bool>
    </property>
    <property name="text">
-    <string>Grid</string>
+    <string>&amp;Grid</string>
+   </property>
+  </action>
+  <action name="actionNavMesh">
+   <property name="text">
+    <string>NavMesh</string>
+   </property>
+  </action>
+  <action name="actShow3DNavMesh">
+   <property name="checkable">
+    <bool>true</bool>
+   </property>
+   <property name="text">
+    <string>&amp;NavMesh</string>
    </property>
   </action>
  </widget>