Inventor/nodes/SoAlgebraicShape.h

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#ifndef SO_ALGEBRAIC_SHAPE_H
#define SO_ALGEBRAIC_SHAPE_H

#include <Inventor/nodes/SoShape.h>
#include <Inventor/nodes/SoShaderObject.h>
#include <Inventor/nodes/SoVertexShader.h>
#include <Inventor/nodes/SoFragmentShader.h>
#include <Inventor/SbBox.h>
#include <Inventor/SbVec.h>


class SoAlgebraicShapeImpl; // Implementation class
class SoBufferedShape;

class  SoAlgebraicShape : public SoShape
{
  SO_NODE_HEADER(SoAlgebraicShape);

public:

  SoSFNode rayIntersection;

  enum ASWorkSpace {
    BOX,    
    CAMERA, 
    WORLD,  
    MAX_WORK_SPACE
  };

  SoSFEnum workspace;

  enum ASShaderSlot {
    COMPUTE_COLOR,
    VERTEX_SHADER_ENTRY,
    MAX_SHADER_SLOT
  };

  SoMFNode shaderSlots;

  SoSFBool generateTransparency;

  enum ASClippingPolicy
  {
    STANDARD, 
    FULL_SHAPE, 
  };

  SoSFEnum clippingPolicy;

private:

  SoAlgebraicShape ();

  virtual ~SoAlgebraicShape ();

  virtual void computeBBox ( SbBox3f &box, SbVec3f &center ) = 0;

  bool solveQuadric ( const SbVec3f& abc, SbVec2f& roots ) const;

  static SoFragmentShader* fragmentShaderFromFile ( const SbString& filename );

  virtual void generatePrimitives(SoAction *action);


  void setCustomTransformationShaderObject( SoVertexShader* vso );
  void setCustomRayParametersShaderObject ( SoVertexShader* vso );
  void setCustomGeometryBufferedShape ( SoBufferedShape* shape );

private:


  virtual void GLRender ( SoGLRenderAction *action );
  virtual void computeBBox ( SoAction *action, SbBox3f &box, SbVec3f &center );

private:


  static void initClass ();
  static void exitClass ();

  virtual void notify ( SoNotList *list );

private:

  // Internal for updating shader parameter when BBox is not valid
  void updateBBox ();

private:

  // Implementation class
  SoAlgebraicShapeImpl* m_impl;

  friend class SoAlgebraicShapeImpl;

};

#endif // SO_QUADRIC_SHAPE_H

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Open Inventor Toolkit reference manual, generated on 12 Feb 2024
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