SoFloatElement.h

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/*=======================================================================
** Author      : Gavin Bell (MMM yyyy)
**=======================================================================*/
/*=======================================================================
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**=======================================================================*/
/*=======================================================================
** Modified by : VSG (MMM YYYY)
**=======================================================================*/
 
 
#ifndef  _SO_FLOAT_ELEMENT
#define  _SO_FLOAT_ELEMENT
 
 
#include <Inventor/elements/SoSubElement.h>
 
SoEXTENDER_Documented class  SoFloatElement : public SoElement {
 
  SO_ELEMENT_ABSTRACT_HEADER(SoFloatElement);
 
public:
  virtual void        print(FILE *fp) const;
 
private:
 
  virtual SbBool matches(const SoElement* elt) const;
 
  virtual SoElement* copyMatchInfo() const;
 
 private:
  // Initializes the SoFloatElement class
  static void         initClass();
  static void         exitClass();
 
  // Set value.  Derived classes have static inline methods
  // that pass in the stack index and cast their type into a float.
  // This just gets an appropriate instance and calls the virtual
  // set.
  //static void         set(int stackIndex, SoState *state, float value);
  static void         set(SoType type, int stackIndex, SoState *state, float value);
 
  // Get value.  Derived classes have static inline methods to pass
  // in the stackIndex and cast the returned value to the right type.
 
  static float        get(SoType type, int stackIndex, SoState *state)
  {return (static_cast<const SoFloatElement*>(getConstElement(state, type, stackIndex)))->data;}
 
  // Get the value from the element itself
  float getValue() const { return data; }
 
 private:
  // Storage for data.
  float data;
 
  // Destructor
  virtual ~SoFloatElement();
 
  // Virtual set that subclasses can override to implement
  // side-effect behaviors.
  virtual void        setElt(float value);
};
 
#endif /* _SO_FLOAT_ELEMENT */