SbCylinderSectionProjector.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 * UNPUBLISHED -- Rights reserved under the copyright laws of the United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      : Howard Look (MMM yyyy)
** Modified by : Paul Isaacs (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_SECTION_PROJECTOR_
#define _SB_CYLINDER_SECTION_PROJECTOR_
 
#include <Inventor/projectors/SbCylinderProjector.h>
 
class  SbCylinderSectionProjector : public SbCylinderProjector
{
 public:
  SbCylinderSectionProjector(float  edgeTol = 0.9f,
                             SbBool orientToEye = TRUE);
 
  SbCylinderSectionProjector( const SbCylinder &cyl,
                              float edgeTol = 0.9f,
                              SbBool orientToEye = TRUE);
 
  ~SbCylinderSectionProjector() {}
  virtual SbProjector *    copy() const;
 
  virtual SbVec3f     project(const SbVec2f &point);
  virtual SbVec3f intersect( const SbLine &line );
  virtual SbRotation  getRotation(const SbVec3f &point1,
                                  const SbVec3f &point2);
 
  void                setTolerance(float edgeTol);
 
  float               getTolerance() const              { return tolerance; }
 
  SbBool              isWithinTolerance(const SbVec3f &point);
    
 private:
  // Sets up the tolerance slice.
  // If projecting from a point, call with no parameters.
  // If intersecting a line, pass the line in *working space*.
  virtual void        setupTolerance( const SbLine *line = NULL );
 
  // Apply the projector using the given line in working space.
  // Encapsulates code common to project and intersect methods.
  // New for v3.0
  virtual SbVec3f intersectWorkingLine( const SbLine &line );
 
  // Information about the ring tolerance.
  float               tolerance;  // the edge tolerance
  float               tolDist;    // dist from planeLine to cylinder
    
  // Information about the plane used for intersection testing.
  SbVec3f     planeDir;               // normal direction
  SbLine      planeLine;              // line parallel to axis, but in plane
  float       planeDist;              // distance from cylinder center
  SbPlane     tolPlane;               // the plane itself
 
};
 
#endif /* _SB_CYLINDER_SECTION_PROJECTOR_ */