Inventor/elements/SoTextureCoordinate3Element.h

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**=======================================================================*/
/*=======================================================================
** Author      : Patrick Vigneras (Nov 1999)
**=======================================================================*/

#ifndef  _SO_TEXTURE_COORDINATE3_ELEMENT
#define  _SO_TEXTURE_COORDINATE3_ELEMENT

#include <Inventor/SbLinear.h>
#include <Inventor/elements/SoReplacedTextureElement.h>
#include <Inventor/STL/vector>

typedef const SbVec4f &
SoTextureCoordinate3FunctionCB(void *userdata, const SbVec3f &point,
                               const SbVec3f &normal);

SoEXTENDER_Documented class  SoTextureCoordinate3Element : public SoReplacedTextureElement {

  SO_ELEMENT_HEADER(SoTextureCoordinate3Element);

public:
 enum CoordType {
    EXPLICIT = 1,   // Coordinates stored in state
    FUNCTION = 2    // Coordinates generated by software function
  };

  static void         setDefault(SoState *state, SoNode *node);

  // FUNCTION:
  static void         setFunction(SoState *state, SoNode *node,
                                  SoTextureCoordinate3FunctionCB *func,
                                  void *userData,
                                  SbBool frcSend = FALSE);

  // EXPLICIT:
  static void         set3(SoState *state, SoNode *node,
                           int32_t numCoords, const SbVec3f *coords,
                           SbBool frcSend = FALSE);

  static void         set4(SoState *state, SoNode *node,
                           int32_t numCoords, const SbVec4f *coords,                                                
                           SbBool frcSend = FALSE);

  static CoordType    getType(SoState *state, int unit=0);

  virtual CoordType   getType(int unit=0) const;

  static const SoTextureCoordinate3Element * getInstance(SoState *state);

  // Get routine for FUNCTION case:

  const SbVec4f &     get(const SbVec3f &point, const SbVec3f &normal,
                          int unit=0) const;

  // Get routines for EXPLICIT case:

  int32_t             getNum(int unit=0) const ;

  SbBool              is3D(int unit=0) const ;

  SbBool              isForceSending(int unit=0) const ;

  const SbVec3f &     get3(int index, int unit=0) const;
  const SbVec4f &     get4(int index, int unit=0) const;

  virtual void        print(FILE *fp) const;

  virtual void push(SoState *) ;

private:

  virtual void commonInit();

  virtual void init(SoState *state);

 private:
  // Initializes the SoTextureCoordinate3Element class
  static void         initClass();
  static void         exitClass();

private:
  struct SoTexCoord3Data {
    SoTexCoord3Data()
      :whatKind(EXPLICIT), funcCB(NULL),funcCBData(NULL),
      numCoords(0),coords3(NULL),coords4(NULL),coordsAre3D(FALSE),forceSend(FALSE)
    {}


    SoTexCoord3Data& operator=(const SoTexCoord3Data& data)
    {
      whatKind = data.whatKind ;
      funcCB = data.funcCB ;
      funcCBData = data.funcCBData ;
      numCoords = data.numCoords ;
      coords3 = data.coords3 ;
      coords4 = data.coords4 ;
      coordsAre3D = data.coordsAre3D ;
      forceSend = data.forceSend;
      return *this ;
    }

    // members
    // What kind of coordinates will be done:
    CoordType           whatKind;

    // Storage for FUNCTION:
    SoTextureCoordinate3FunctionCB      *funcCB;
    void                                *funcCBData;

    // Storage for EXPLICIT:
    int32_t             numCoords;
    const SbVec3f       *coords3;
    const SbVec4f       *coords4;
    SbBool              coordsAre3D;
    SbBool              forceSend;
  } ;
  SoTexCoord3Data& getData(const size_t unit) const;

  virtual ~SoTextureCoordinate3Element();

private:
  void checkSize(const size_t size) const;
  mutable std::vector<SoTexCoord3Data> m_texCoord3Data ;


  SbVec3f             convert3;       // To convert from 4-D to 3-D
  SbVec4f             convert4;       // To convert from 3-D to 4-D
};

#endif /* _SO_TEXTURE_COORDINATE3_ELEMENT */

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Open Inventor Toolkit reference manual, generated on 12 Feb 2024
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