00001 /*======================================================================= 00002 * Copyright 1991-1996, Silicon Graphics, Inc. 00003 * ALL RIGHTS RESERVED 00004 * 00005 * UNPUBLISHED -- Rights reserved under the copyright laws of the United 00006 * States. Use of a copyright notice is precautionary only and does not 00007 * imply publication or disclosure. 00008 * 00009 * U.S. GOVERNMENT RESTRICTED RIGHTS LEGEND: 00010 * Use, duplication or disclosure by the Government is subject to restrictions 00011 * as set forth in FAR 52.227.19(c)(2) or subparagraph (c)(1)(ii) of the Rights 00012 * in Technical Data and Computer Software clause at DFARS 252.227-7013 and/or 00013 * in similar or successor clauses in the FAR, or the DOD or NASA FAR 00014 * Supplement. Contractor/manufacturer is Silicon Graphics, Inc., 00015 * 2011 N. Shoreline Blvd. Mountain View, CA 94039-7311. 00016 * 00017 * THE CONTENT OF THIS WORK CONTAINS CONFIDENTIAL AND PROPRIETARY 00018 * INFORMATION OF SILICON GRAPHICS, INC. ANY DUPLICATION, MODIFICATION, 00019 * DISTRIBUTION, OR DISCLOSURE IN ANY FORM, IN WHOLE, OR IN PART, IS STRICTLY 00020 * PROHIBITED WITHOUT THE PRIOR EXPRESS WRITTEN PERMISSION OF SILICON 00021 * GRAPHICS, INC. 00022 **=======================================================================*/ 00023 /*======================================================================= 00024 ** Author : Howard Look (MMM yyyy) 00025 ** Modified by : Paul Isaacs (MMM yyyy) 00026 **=======================================================================*/ 00027 /*======================================================================= 00028 *** THE CONTENT OF THIS WORK IS PROPRIETARY TO FEI S.A.S, (FEI S.A.S.), *** 00029 *** AND IS DISTRIBUTED UNDER A LICENSE AGREEMENT. *** 00030 *** *** 00031 *** REPRODUCTION, DISCLOSURE, OR USE, IN WHOLE OR IN PART, OTHER THAN AS *** 00032 *** SPECIFIED IN THE LICENSE ARE NOT TO BE UNDERTAKEN EXCEPT WITH PRIOR *** 00033 *** WRITTEN AUTHORIZATION OF FEI S.A.S. *** 00034 *** *** 00035 *** RESTRICTED RIGHTS LEGEND *** 00036 *** USE, DUPLICATION, OR DISCLOSURE BY THE GOVERNMENT OF THE CONTENT OF THIS *** 00037 *** WORK OR RELATED DOCUMENTATION IS SUBJECT TO RESTRICTIONS AS SET FORTH IN *** 00038 *** SUBPARAGRAPH (C)(1) OF THE COMMERCIAL COMPUTER SOFTWARE RESTRICTED RIGHT *** 00039 *** CLAUSE AT FAR 52.227-19 OR SUBPARAGRAPH (C)(1)(II) OF THE RIGHTS IN *** 00040 *** TECHNICAL DATA AND COMPUTER SOFTWARE CLAUSE AT DFARS 52.227-7013. *** 00041 *** *** 00042 *** COPYRIGHT (C) 1996-2020 BY FEI S.A.S, *** 00043 *** BORDEAUX, FRANCE *** 00044 *** ALL RIGHTS RESERVED *** 00045 **=======================================================================*/ 00046 /*======================================================================= 00047 ** Modified by : VSG (MMM YYYY) 00048 **=======================================================================*/ 00049 00050 00051 #ifndef _SB_SPHERE_SECTION_PROJECTOR_ 00052 #define _SB_SPHERE_SECTION_PROJECTOR_ 00053 00054 #include <Inventor/projectors/SbSphereProjector.h> 00055 00085 class SbSphereSectionProjector : public SbSphereProjector 00086 { 00087 public: 00103 SbSphereSectionProjector(float edgeTol = 0.9f, 00104 SbBool orientToEye = TRUE); 00105 00120 SbSphereSectionProjector(const SbSphere &sph, 00121 float edgeTol = 0.9f, 00122 SbBool orientToEye = TRUE); 00123 00127 ~SbSphereSectionProjector() {} 00132 virtual SbProjector * copy() const; 00138 virtual SbVec3f project(const SbVec2f &point); 00144 virtual SbVec3f intersect( const SbLine &line ); 00148 virtual SbRotation getRotation(const SbVec3f &point1, 00149 const SbVec3f &point2); 00150 00156 void setTolerance(float edgeTol); 00157 00161 float getTolerance() const { return tolerance; } 00162 00175 void setRadialFactor(float rad = 0.0) { radialFactor = rad;} 00179 float getRadialFactor() const { return radialFactor; } 00180 00184 SbBool isWithinTolerance(const SbVec3f &point); 00185 00186 private: 00187 00188 // Sets up the tolerance slice. 00189 // If projecting from a point, call with no parameters. 00190 // If intersecting a line, pass the line in *working space*. 00191 virtual void setupTolerance( const SbLine *line = NULL ); 00192 00193 // Apply the projector using the given line in working space. 00194 // Encapsulates code common to project and intersect methods. 00195 // New for v3.0 00196 virtual SbVec3f intersectWorkingLine( const SbLine &line ); 00197 00198 // Information about the slice tolerance. 00199 float tolerance; // the edge tolerance 00200 float tolDist; // dist from planePoint to tolerance slice 00201 00202 float radialFactor; 00203 00204 // Information about the plane used for intersection testing. 00205 SbVec3f planePoint; // point on plane 00206 SbVec3f planeDir; // normal direction 00207 float planeDist; // distance from sphere center 00208 SbPlane tolPlane; // the plane itself 00209 00210 }; 00211 00212 #endif /* _SB_SPHERE_SECTION_PROJECTOR_ */ 00213 00214 00215