PR: synchro V7_main tag mergefrom_V6_main_28Feb13

[modules/smesh.git] / doc / salome / gui / SMESH / input / removing_nodes_and_elements.doc

diff --git a/doc/salome/gui/SMESH/input/removing_nodes_and_elements.doc b/doc/salome/gui/SMESH/input/removing_nodes_and_elements.doc
index 6cd89157302553b8021384a5022ca7837bd47ae1..63f2f3bb2b69bd9e924316adbc92af99ae453d07 100644 (file)
--- a/doc/salome/gui/SMESH/input/removing_nodes_and_elements.doc
+++ b/doc/salome/gui/SMESH/input/removing_nodes_and_elements.doc
@@ -6,6 +6,7 @@
 
 <ul>
 <li>\ref removing_nodes_anchor "Nodes"</li>
+<li>\ref removing_orphan_nodes_anchor "Orphan Nodes"</li>
 <li>\ref removing_elements_anchor "Elements"</li>
 <li>\ref clear_mesh_anchor "Clear Mesh Data"</li>
 </ul>
@@ -18,11 +19,11 @@
 <ol>
 <li>Select your mesh in the Object Browser or in the 3D viewer.</li>
 
-<li>From the Modification menu choose Remove and from the associated
-submenu select the Remove nodes, or just click <em>"Remove nodes"</em>
+<li>From the <em>Modification</em> menu choose <em>Remove</em> and from the associated
+submenu select the <em>Nodes</em>, or just click <em>"Remove nodes"</em>
 button in the toolbar.
 
-\image html image88.gif
+\image html remove_nodes_icon.png
 <center><em>"Remove nodes" button</em></center>
 
 The following dialog box will appear:
@@ -46,6 +47,30 @@ about filters in the \ref selection_filter_library_page "Selection filter librar
 \note Be careful while removing nodes because if you remove a definite
 node of your mesh all adjacent elements will be also deleted.
 
+<br>
+\anchor removing_orphan_nodes_anchor
+<h2>Removing orphan nodes</h2>
+
+There is a quick way to remove all orphan (free) nodes.
+
+<em>To remove orphan nodes:</em>
+<ol>
+<li>Select your mesh in the Object Browser or in the 3D viewer.</li>
+
+<li>From the <em>Modification</em> menu choose <em>Remove</em> and from the associated
+submenu select <em>Orphan Nodes</em>, or just click <em>"Remove orphan nodes"</em>
+button in the toolbar.
+
+\image html remove_orphan_nodes_icon.png
+<center><em>"Remove orphan nodes" button</em></center>
+
+The following Warning message box will appear:
+
+\image html removeorphannodes.png
+
+Confirm nodes removal by pressing "Yes" button.
+</ol>
+
 <br>
 \anchor removing_elements_anchor
 <h2>Removing elements</h2>
@@ -54,8 +79,8 @@ node of your mesh all adjacent elements will be also deleted.
 <ol>
 <li>Select your mesh in the Object Browser or in the 3D viewer.</li>
 
-<li>From the \b Modification menu choose \b Remove and from the
-associated submenu select the Remove elements, or just click
+<li>From the <em>Modification</em> menu choose <em>Remove</em> and from the
+associated submenu select the <em>Elements</em>, or just click
 <em>"Remove elements"</em> button in the toolbar.
 
 \image html remove_elements_icon.png
@@ -94,12 +119,19 @@ about filters in the \ref selection_filter_library_page "Selection filter librar
 <li>From the Modification menu choose Remove and from the associated
 submenu select the Clear Mesh Data, or just click <em>"Clear Mesh Data"</em>
 button in the toolbar. You can also right-click on the mesh in the
-Object Browser and select Clear Mesh Data in the pop-up menu.
+Object Browser and select Clear Mesh Data in the pop-up menu.</li>
 </ol>
 
+<center>
 \image html mesh_clear.png
-<center><em>"Clear Mesh Data" button</em></center>
-
+<em>"Clear Mesh Data" button</em></center>
+
+\note This command works in a different way in different situations: <ul>
+  <li> if the mesh is computed on a geometry, then "Clear Mesh Data" removes
+    all elements and nodes.</li>
+  <li> if the mesh is not based on a geometry (imported, compound, created from
+    scratch etc), then "Clear Mesh Data" removes only the elements and
+    nodes computed by algorithms. If no such elements or nodes have been created, can remove nothing.</li></ul>
 
 <br><b>See Also</b> a sample TUI Script of a 
 \ref tui_removing_nodes_and_elements "Removing Nodes and Elements" operation.