From b9712c9b831997bf72d2376e6225835b257d64a5 Mon Sep 17 00:00:00 2001
From: "Dmitry Yu. Naumov" <github@naumov.de>
Date: Thu, 23 Aug 2018 11:34:38 +0200
Subject: [PATCH] [MeL] Add isBaseNode predicate.
---
MeshLib/Node.cpp | 13 +++++++++++++
MeshLib/Node.h | 4 ++++
2 files changed, 17 insertions(+)
diff --git a/MeshLib/Node.cpp b/MeshLib/Node.cpp
index e147769af02..a212f11539b 100644
--- a/MeshLib/Node.cpp
+++ b/MeshLib/Node.cpp
@@ -49,5 +49,18 @@ void Node::updateCoordinates(double x, double y, double z)
_elements[i]->computeVolume();
}
+bool isBaseNode(Node const& node)
+{
+ // Check if node is connected.
+ if (node.getNumberOfElements() == 0)
+ return true;
+
+ // In a mesh a node always belongs to at least one element.
+ auto const e = node.getElement(0);
+
+ auto const n_base_nodes = e->getNumberOfBaseNodes();
+ auto const local_index = e->getNodeIDinElement(&node);
+ return local_index < n_base_nodes;
+}
}
diff --git a/MeshLib/Node.h b/MeshLib/Node.h
index dc105a3a24b..558561ef257 100644
--- a/MeshLib/Node.h
+++ b/MeshLib/Node.h
@@ -102,4 +102,8 @@ protected:
std::vector<Element*> _elements;
}; /* class */
+/// Returns true if the given node is a base node of a (first) element, or if it
+/// is not connected to any element i.e. an unconnected node.
+bool isBaseNode(Node const& node);
+
} /* namespace */
--
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