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#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_ */
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