1 files changed, 62 insertions, 0 deletions
diff --git a/tool_src/QvLib/QvElement.h b/tool_src/QvLib/QvElement.h
new file mode 100644
index 0000000..58c5ce1
--- /dev/null
+++ b/tool_src/QvLib/QvElement.h
@@ -0,0 +1,62 @@
+#ifndef  _QV_ELEMENT_
+#define  _QV_ELEMENT_
+
+#include <QvBasic.h>
+
+class QvNode;
+
+//////////////////////////////////////////////////////////////////////////////
+//
+// The base class element; the data is a pointer to some QvNode. The
+// type of the node can be inferred from the use of the element
+// instance in a particular stack in the state. In some cases, the
+// "type" field is used to distinguish among various possible node
+// types within a single stack.
+//
+//////////////////////////////////////////////////////////////////////////////
+
+class QvElement {
+
+  public:
+
+    enum NodeType {
+	// Fallback case
+	Unknown,
+
+	// Types of cameras in camera stack
+	OrthographicCamera,
+	PerspectiveCamera,
+
+	// Types of lights in light stack
+	DirectionalLight,
+	PointLight,
+	SpotLight,
+
+	// Types of transformations in transformation stack
+	NoOpTransform,		// For QvTransformSeparator
+	MatrixTransform,
+	Rotation,
+	Scale,
+	Transform,
+	Translation,
+
+	// This has to be last!!!
+	NumNodeTypes,
+    };
+
+    static const char *nodeTypeNames[NumNodeTypes];	// Names of node types
+
+    int		depth;		// Depth of element in state
+    QvElement	*next;		// Next element in stack
+    QvNode	*data;		// Pointer to node containing data
+    NodeType	type;		// Type of data node
+
+    QvElement();
+    virtual ~QvElement();
+
+	QvElement operator= (QvElement * x){ return *x;}
+    // Prints contents for debugging, mostly
+    virtual void	print();
+};
+
+#endif /* _QV_ELEMENT_ */