SoCylinder.h

/*=======================================================================
 * Copyright 1991-1996, Silicon Graphics, Inc.
 * ALL RIGHTS RESERVED
 *
 * UNPUBLISHED -- Rights reserved under the copyright laws of the United
 * States.   Use of a copyright notice is precautionary only and does not
 * imply publication or disclosure.
 *
 * U.S. GOVERNMENT RESTRICTED RIGHTS LEGEND:
 * Use, duplication or disclosure by the Government is subject to restrictions
 * as set forth in FAR 52.227.19(c)(2) or subparagraph (c)(1)(ii) of the Rights
 * in Technical Data and Computer Software clause at DFARS 252.227-7013 and/or
 * in similar or successor clauses in the FAR, or the DOD or NASA FAR
 * Supplement.  Contractor/manufacturer is Silicon Graphics, Inc.,
 * 2011 N. Shoreline Blvd. Mountain View, CA 94039-7311.
 *
 * THE CONTENT OF THIS WORK CONTAINS CONFIDENTIAL AND PROPRIETARY
 * INFORMATION OF SILICON GRAPHICS, INC. ANY DUPLICATION, MODIFICATION,
 * DISTRIBUTION, OR DISCLOSURE IN ANY FORM, IN WHOLE, OR IN PART, IS STRICTLY
 * PROHIBITED WITHOUT THE PRIOR EXPRESS WRITTEN PERMISSION OF SILICON
 * GRAPHICS, INC.
**=======================================================================*/
/*=======================================================================
** Author      : Paul S. Strauss (MMM yyyy)
** Modified by : Nick Thompson (MMM yyyy)
**=======================================================================*/
/*=======================================================================
 *** THE CONTENT OF THIS WORK IS PROPRIETARY TO FEI S.A.S, (FEI S.A.S.),            ***
 ***              AND IS DISTRIBUTED UNDER A LICENSE AGREEMENT.                     ***
 ***                                                                                ***
 ***  REPRODUCTION, DISCLOSURE,  OR USE,  IN WHOLE OR IN PART,  OTHER THAN AS       ***
 ***  SPECIFIED  IN THE LICENSE ARE  NOT TO BE  UNDERTAKEN  EXCEPT WITH PRIOR       ***
 ***  WRITTEN AUTHORIZATION OF FEI S.A.S.                                           ***
 ***                                                                                ***
 ***                        RESTRICTED RIGHTS LEGEND                                ***
 ***  USE, DUPLICATION, OR DISCLOSURE BY THE GOVERNMENT OF THE CONTENT OF THIS      ***
 ***  WORK OR RELATED DOCUMENTATION IS SUBJECT TO RESTRICTIONS AS SET FORTH IN      ***
 ***  SUBPARAGRAPH (C)(1) OF THE COMMERCIAL COMPUTER SOFTWARE RESTRICTED RIGHT      ***
 ***  CLAUSE  AT FAR 52.227-19  OR SUBPARAGRAPH  (C)(1)(II)  OF  THE RIGHTS IN      ***
 ***  TECHNICAL DATA AND COMPUTER SOFTWARE CLAUSE AT DFARS 52.227-7013.             ***
 ***                                                                                ***
 ***                   COPYRIGHT (C) 1996-2021 BY FEI S.A.S,                        ***
 ***                        BORDEAUX, FRANCE                                        ***
 ***                      ALL RIGHTS RESERVED                                       ***
**=======================================================================*/
/*=======================================================================
** Modified by : VSG (MMM YYYY)
**=======================================================================*/
 
 
#ifndef  _SO_CYLINDER_
#define  _SO_CYLINDER_
 
#include <Inventor/SbVec.h>
#include <Inventor/SbBox.h>
#include <Inventor/fields/SoSFBitMask.h>
#include <Inventor/fields/SoSFFloat.h>
#include <Inventor/nodes/SoShape.h>
 
//
//  Class: SoCylinder
//
//  Simple cylinder, aligned with y-axis. Default size is -1 to +1 in
//  all 3 dimensions, but the radius and height fields can be used to
//  change that. There are essentially three parts to the cylinder:
//  the sides, the top face, and the bottom face (in that order).
//
 
SO_PIMPL_PUBLIC_DECLARATION( SoCylinder );
 
class  SoCylinder : public SoShape {
 
  SO_NODE_HEADER(SoCylinder);
  SO_PIMPL_PUBLIC_HEADER( SoCylinder );
 
 public:
 
  enum Part {
    SIDES   = 0x01,
    TOP     = 0x02,
    BOTTOM  = 0x04,
    ALL     = 0x07
  };
 
  // Fields
  SoSFBitMask         parts;
  SoSFFloat           radius;
  SoSFFloat           height;
 
  SoCylinder();
 
  void                addPart(SoCylinder::Part part);
  void                removePart(SoCylinder::Part part);
 
  SbBool              hasPart(SoCylinder::Part part) const;
 
 private:
  // Implements actions
  virtual void        GLRender(SoGLRenderAction *action);
  virtual void        rayPick(SoRayPickAction *action);
  virtual void        getPrimitiveCount(SoGetPrimitiveCountAction *action);
 
  // Computes bounding box of cylinder
  virtual void        computeBBox(SoAction *action, SbBox3f &box,
                                  SbVec3f &center);
 
 private:
  static void         initClass();
  static void         exitClass();
 
  // Computes number of sides and sections to use to represent
  // cylinder (based on complexity), then computes ring of x,z
  // coordinates around cylinder and stores in ringCoords.
  void computeRing( SoState* state, int& numSides, int& numSections, std::vector<SbVec2f>& ringCoords ) const;
 
  virtual SoChildList* getChildren() const;
 
private:
  // Generates triangles representing a cylinder
  virtual void        generatePrimitives(SoAction *action);
  
  virtual ~SoCylinder();
};
 
#endif /* _SO_CYLINDER_ */