SbCylinderProjector.h

Go to the documentation of this file.

/*=======================================================================
 * 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 * UNPUBLISHED -- Rights reserved under the copyright laws of the United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      : Howard Look (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) 1996-2014 BY FEI S.A.S,                        ***
 ***                        BORDEAUX, FRANCE                                        ***
 ***                      ALL RIGHTS RESERVED                                       ***
**=======================================================================*/
/*=======================================================================
** Modified by : VSG (MMM YYYY)
**=======================================================================*/
 
 
#ifndef _SB_CYLINDER_PROJECTOR_
#define _SB_CYLINDER_PROJECTOR_
 
#include <Inventor/projectors/SbProjector.h>
 
class  SbCylinderProjector : public SbProjector
{
 public:
  virtual ~SbCylinderProjector() {};
 
  virtual SbVec3f     project(const SbVec2f &point) = 0;
  virtual SbVec3f intersect( const SbLine &line ) = 0;
 
  SbVec3f             projectAndGetRotation(const SbVec2f &point,
                                            SbRotation &rot);
 
  virtual SbRotation  getRotation(const SbVec3f &point1,
                                  const SbVec3f &point2) = 0;
 
  void                setCylinder(const SbCylinder &cyl);
 
  const SbCylinder &  getCylinder() const             { return cylinder; }
 
  void                setOrientToEye(SbBool orientToEye);
  SbBool              isOrientToEye() const           { return orientToEye; }
  void                setFront(SbBool isFront);
  SbBool              isFront()       const   { return intersectFront; }
  SbBool              isPointInFront( const SbVec3f &point ) const;
  virtual void        setWorkingSpace(const SbMatrix &space);
    
 private:
  // Constructors
  // The default cylinder to is centered about the Y axis and
  // has a radius of 1.0.
  SbCylinderProjector(SbBool orientToEye);
  SbCylinderProjector(const  SbCylinder &cyl,
                      SbBool orientToEye);
 
  // Are intersections done on the front half ( if not, they're done on th e
  // back half) of the cylinder?
  SbBool      intersectFront;
 
  // Just like cylinder::intersect, except always returns
  // the intersection that is in "front".
  SbBool      intersectCylinderFront(const SbLine &line, SbVec3f &result);
 
  SbCylinder  cylinder;               // Cylinder for this projector.
  SbBool      orientToEye;            // TRUE if always oriented to eye.
  SbBool      needSetup;              // Set TRUE whenever cylinder,
  // work space or orientation changes.
 
  // Cached last point on this projector. Subclasses must set
  // this in their project and getRotation methods.
  SbVec3f     lastPoint;
 
};
 
 
#endif /* _SB_CYLINDER_PROJECTOR_ */