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SbSphereSectionProjector.h
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1/*=======================================================================
2 * Copyright 1991-1996, Silicon Graphics, Inc.
3 * ALL RIGHTS RESERVED
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5 * UNPUBLISHED -- Rights reserved under the copyright laws of the United
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9 * U.S. GOVERNMENT RESTRICTED RIGHTS LEGEND:
10 * Use, duplication or disclosure by the Government is subject to restrictions
11 * as set forth in FAR 52.227.19(c)(2) or subparagraph (c)(1)(ii) of the Rights
12 * in Technical Data and Computer Software clause at DFARS 252.227-7013 and/or
13 * in similar or successor clauses in the FAR, or the DOD or NASA FAR
14 * Supplement. Contractor/manufacturer is Silicon Graphics, Inc.,
15 * 2011 N. Shoreline Blvd. Mountain View, CA 94039-7311.
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17 * THE CONTENT OF THIS WORK CONTAINS CONFIDENTIAL AND PROPRIETARY
18 * INFORMATION OF SILICON GRAPHICS, INC. ANY DUPLICATION, MODIFICATION,
19 * DISTRIBUTION, OR DISCLOSURE IN ANY FORM, IN WHOLE, OR IN PART, IS STRICTLY
20 * PROHIBITED WITHOUT THE PRIOR EXPRESS WRITTEN PERMISSION OF SILICON
21 * GRAPHICS, INC.
22**=======================================================================*/
23/*=======================================================================
24** Author : Howard Look (MMM yyyy)
25** Modified by : Paul Isaacs (MMM yyyy)
26**=======================================================================*/
27/*=======================================================================
28 *** THE CONTENT OF THIS WORK IS PROPRIETARY TO FEI S.A.S, (FEI S.A.S.), ***
29 *** AND IS DISTRIBUTED UNDER A LICENSE AGREEMENT. ***
30 *** ***
31 *** REPRODUCTION, DISCLOSURE, OR USE, IN WHOLE OR IN PART, OTHER THAN AS ***
32 *** SPECIFIED IN THE LICENSE ARE NOT TO BE UNDERTAKEN EXCEPT WITH PRIOR ***
33 *** WRITTEN AUTHORIZATION OF FEI S.A.S. ***
34 *** ***
35 *** RESTRICTED RIGHTS LEGEND ***
36 *** USE, DUPLICATION, OR DISCLOSURE BY THE GOVERNMENT OF THE CONTENT OF THIS ***
37 *** WORK OR RELATED DOCUMENTATION IS SUBJECT TO RESTRICTIONS AS SET FORTH IN ***
38 *** SUBPARAGRAPH (C)(1) OF THE COMMERCIAL COMPUTER SOFTWARE RESTRICTED RIGHT ***
39 *** CLAUSE AT FAR 52.227-19 OR SUBPARAGRAPH (C)(1)(II) OF THE RIGHTS IN ***
40 *** TECHNICAL DATA AND COMPUTER SOFTWARE CLAUSE AT DFARS 52.227-7013. ***
41 *** ***
42 *** COPYRIGHT (C) 1996-2014 BY FEI S.A.S, ***
43 *** BORDEAUX, FRANCE ***
44 *** ALL RIGHTS RESERVED ***
45**=======================================================================*/
46/*=======================================================================
47** Modified by : VSG (MMM YYYY)
48**=======================================================================*/
49
50
51#ifndef _SB_SPHERE_SECTION_PROJECTOR_
52#define _SB_SPHERE_SECTION_PROJECTOR_
53
55
85{
86 public:
102 SbSphereSectionProjector(float edgeTol = 0.9f,
103 SbBool orientToEye = TRUE);
104
120 float edgeTol = 0.9f,
121 SbBool orientToEye = TRUE);
122
131 virtual SbProjector * copy() const;
137 virtual SbVec3f project(const SbVec2f &point);
143 virtual SbVec3f intersect( const SbLine &line );
147 virtual SbRotation getRotation(const SbVec3f &point1,
148 const SbVec3f &point2);
149
155 void setTolerance(float edgeTol);
156
160 float getTolerance() const { return tolerance; }
161
174 void setRadialFactor(float rad = 0.0) { radialFactor = rad;}
178 float getRadialFactor() const { return radialFactor; }
179
184
185 private:
186
187 // Sets up the tolerance slice.
188 // If projecting from a point, call with no parameters.
189 // If intersecting a line, pass the line in *working space*.
190 virtual void setupTolerance( const SbLine *line = NULL );
191
192 // Apply the projector using the given line in working space.
193 // Encapsulates code common to project and intersect methods.
194 // New for v3.0
195 virtual SbVec3f intersectWorkingLine( const SbLine &line );
196
197 // Information about the slice tolerance.
198 float tolerance; // the edge tolerance
199 float tolDist; // dist from planePoint to tolerance slice
200
201 float radialFactor;
202
203 // Information about the plane used for intersection testing.
204 SbVec3f planePoint; // point on plane
205 SbVec3f planeDir; // normal direction
206 float planeDist; // distance from sphere center
207 SbPlane tolPlane; // the plane itself
208
209};
210
211#endif /* _SB_SPHERE_SECTION_PROJECTOR_ */
212
213
#define TRUE
Possible value of SbBool.
Definition SbBase.h:77
Directed line in 3D.
Definition SbLine.h:57
Oriented plane in 3D.
Definition SbPlane.h:64
Base class for representing projectors.
Definition SbProjector.h:85
Class for representing a rotation.
Definition SbRotation.h:126
Class for representing a sphere.
Definition SbSphere.h:57
Sphere projector.
Sphere-section projector.
SbSphereSectionProjector(const SbSphere &sph, float edgeTol=0.9f, SbBool orientToEye=TRUE)
Constructor that uses a supplied sphere.
virtual SbRotation getRotation(const SbVec3f &point1, const SbVec3f &point2)
Computes a rotation based on two points on this projector.
virtual SbProjector * copy() const
Returns an instance that is a copy of this instance.
void setRadialFactor(float rad=0.0)
Sets the radial rotation factor.
float getRadialFactor() const
Gets the radial rotation factor.
virtual SbVec3f intersect(const SbLine &line)
Applies the projector using the given line in world coordinates, returning the point in three dimensi...
SbBool isWithinTolerance(const SbVec3f &point)
Finds whether this point on the sphere or tolerance plane is within tolerance.
SbSphereSectionProjector(float edgeTol=0.9f, SbBool orientToEye=TRUE)
Constructor that uses a default sphere centered at the origin with radius 1.0.
virtual SbVec3f project(const SbVec2f &point)
Applies the projector using the given point, returning the point in three dimensions that it projects...
float getTolerance() const
Gets the edge tolerance as a fraction of the radius of the sphere.
void setTolerance(float edgeTol)
Sets the edge tolerance as a fraction of the radius of the sphere.
2D vector class.
Definition SbVec.h:76
3D vector class.
Definition SbVec.h:932
int SbBool
Boolean type.
Definition SbBase.h:87