From Paul de Repentinguy, DXF loader plugin. Ported to Linux by Robert Osfield.

src/osgPlugins/dxf/dxfBlock.cpp

@@ -0,0 +1,58 @@
+/* dxfReader for OpenSceneGraph  Copyright (C) 2005 by GraphArchitecture ( grapharchitecture.com )
+ * Programmed by Paul de Repentigny <pdr@grapharchitecture.com>
+ * 
+ * OpenSceneGraph is (C) 2004 Robert Osfield
+ * 
+ * This library is provided as-is, without support of any kind.
+ *
+ * Read DXF docs or OSG docs for any related questions.
+ * 
+ * You may contact the author if you have suggestions/corrections/enhancements.
+ */
+
+
+#include "dxfBlock.h"
+#include "dxfFile.h"
+#include "codeValue.h"
+#include "dxfEntity.h"
+
+using namespace std;
+
+void 
+dxfBlock::assign(dxfFile* dxf, codeValue& cv)
+{
+	string s = cv._string;
+	if (cv._groupCode == 0) {
+		if (_currentEntity && _currentEntity->done()) {
+			_currentEntity = new dxfEntity(s);
+			_entityList.push_back(_currentEntity);
+		} else if (_currentEntity) {
+			_currentEntity->assign(dxf, cv);
+		} else {
+			_currentEntity = new dxfEntity(s);
+			_entityList.push_back(_currentEntity);
+		}
+	} else if (_currentEntity) {
+		_currentEntity->assign(dxf, cv);
+	} else if (cv._groupCode != 0) {
+		double d = cv._double;
+		switch (cv._groupCode) {
+			case 2:
+				_name = s;
+			case 10:
+				_position.x() = d;
+				break;
+			case 20:
+				_position.y() = d;
+				break;
+			case 30:
+				_position.z() = d;
+				break;
+			default:
+				// dxf garble
+				break;
+		}
+	}
+}
+
+const osg::Vec3d& dxfBlock::getPosition() const { return _position; }