Open Inventor Release 2024.1.3
 
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SoComputeBoundingBox.h
1/*=======================================================================
2 * Copyright 1991-1996, Silicon Graphics, Inc.
3 * ALL RIGHTS RESERVED
4 *
5 * UNPUBLISHED -- Rights reserved under the copyright laws of the United
6 * States. Use of a copyright notice is precautionary only and does not
7 * imply publication or disclosure.
8 *
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.
16 *
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 : Paul S. Strauss (MMM yyyy)
25**=======================================================================*/
26/*=======================================================================
27 *** THE CONTENT OF THIS WORK IS PROPRIETARY TO FEI S.A.S, (FEI S.A.S.), ***
28 *** AND IS DISTRIBUTED UNDER A LICENSE AGREEMENT. ***
29 *** ***
30 *** REPRODUCTION, DISCLOSURE, OR USE, IN WHOLE OR IN PART, OTHER THAN AS ***
31 *** SPECIFIED IN THE LICENSE ARE NOT TO BE UNDERTAKEN EXCEPT WITH PRIOR ***
32 *** WRITTEN AUTHORIZATION OF FEI S.A.S. ***
33 *** ***
34 *** RESTRICTED RIGHTS LEGEND ***
35 *** USE, DUPLICATION, OR DISCLOSURE BY THE GOVERNMENT OF THE CONTENT OF THIS ***
36 *** WORK OR RELATED DOCUMENTATION IS SUBJECT TO RESTRICTIONS AS SET FORTH IN ***
37 *** SUBPARAGRAPH (C)(1) OF THE COMMERCIAL COMPUTER SOFTWARE RESTRICTED RIGHT ***
38 *** CLAUSE AT FAR 52.227-19 OR SUBPARAGRAPH (C)(1)(II) OF THE RIGHTS IN ***
39 *** TECHNICAL DATA AND COMPUTER SOFTWARE CLAUSE AT DFARS 52.227-7013. ***
40 *** ***
41 *** COPYRIGHT (C) 1996-2014 BY FEI S.A.S, ***
42 *** BORDEAUX, FRANCE ***
43 *** ALL RIGHTS RESERVED ***
44**=======================================================================*/
45/*=======================================================================
46** Modified by : VSG (MMM YYYY)
47**=======================================================================*/
48
49
50#ifndef _SO_COMPUTE_BOUNDING_BOX_
51#define _SO_COMPUTE_BOUNDING_BOX_
52
53#include <Inventor/SbViewportRegion.h>
54#include <Inventor/engines/SoSubEngine.h>
55#include <Inventor/fields/SoSFPath.h>
56#include <Inventor/fields/SoSFNode.h>
57#include <Inventor/fields/SoSFVec3f.h>
58
60
62//
63// Class: SoComputeBoundingBox
64//
65// This engine has two input fields: "node" (SoSFNode) and "path"
66// (SoSFPath). By default, these fields contain NULL pointers. If the
67// "path" field is not NULL, this engine computes the bounding box
68// and center of the graph defined by the path, using an
69// SoGetBoundingBoxAction, and outputs the results. If the "path"
70// field is NULL but the "node" field isn't, it computes the bounding
71// box and center of the graph rooted by the node.
72//
73// If both the node and the path are NULL, the outputs are disabled.
74//
75// The "boxCenter" output is the center of the computed bounding box,
76// and the "objectCenter" output is the center defined by the objects
77// themselves, as returned by SoGetBoundingBoxAction::getCenter().
78//
79// The engine uses a default viewport region when constructing the
80// SoGetBoundingBoxAction, so screen-based objects (such as 2D text)
81// may not be dealt with correctly. If this feature is needed, you
82// can call setViewportRegion() on an engine instance to set up the
83// correct viewport region to use.
84//
86
122
123 SO_ENGINE_HEADER(SoComputeBoundingBox);
124
125 public:
134
151
156
165
166 private:
167 static void initClass();
168 static void exitClass();
169
170 private:
171 // Indicates that an input has changed - we use this to determine
172 // whether to use the node or path, or to disable output entirely
173 virtual void inputChanged(SoField *whichInput);
174
175 // Evaluation method
176 virtual void evaluate();
177
178 // Destructor
179 virtual ~SoComputeBoundingBox();
180 private:
181 // Pointer to SoGetBoundingBoxAction
183
184 // Each of these is TRUE if the corresponding input pointer is non-NULL
185 SbBool gotNode;
186 SbBool gotPath;
187};
188
189#endif /* _SO_COMPUTE_BOUNDING_BOX_ */
190
Class for representing a viewport.
Computes the bounding box and center of a scene graph.
const SbViewportRegion & getViewportRegion() const
Returns the viewport region to use for the bounding box computation.
SoSFNode node
Defines the graph for which the bounding box is computed.
SoEngineOutput min
( SoSFVec3f ) Minimum point of the computed bounding box.
SoComputeBoundingBox()
Constructor.
void setViewportRegion(const SbViewportRegion &vpReg)
Sets the viewport region to use for the bounding box computation.
SoEngineOutput objectCenter
( SoSFVec3f ) Center of the objects in the graph.
SoSFPath path
Alternatively, defines the graph for which the bounding box is computed.
SoEngineOutput max
( SoSFVec3f ) Maximum point of the computed bounding box.
SoEngineOutput boxCenter
( SoSFVec3f ) Center of the computed bounding box.
Base class for all engines.
Definition SoEngine.h:133
Class for all engine outputs.
Definition SoEngine.h:282
Base class for all fields.
Definition SoField.h:234
Computes bounding box of a scene.
Field containing a a node.
Definition SoSFNode.h:97
Field containing an SoPath.
Definition SoSFPath.h:89
int SbBool
Boolean type.
Definition SbBase.h:87