Open Inventor Release 2024.1.1
 
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SoGetMatrixAction.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5 * UNPUBLISHED -- Rights reserved under the copyright laws of the United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_GET_MATRIX_ACTION_
51#define _SO_GET_MATRIX_ACTION_
52
53#include <Inventor/SbLinear.h>
54#include <Inventor/actions/SoSubAction.h>
55#include <Inventor/SbViewportRegion.h>
56
58//
59// Class: SoGetMatrixAction
60//
61// For computing a cumulative transformation matrix and its inverse,
62// along with a cumulative texture transformation matrix and its inverse.
63//
64// This action is unlike most others in that it does not traverse
65// downwards. When called on a node, it computes the matrix for just
66// that node. (This makes sense for transformation nodes, but not for
67// others, really.) When called on a path, it gathers the
68// transformation info for all nodes in the path and those that
69// affect nodes in the path, but it stops when it hits the last node
70// in the path; it does not traverse downwards from it as other
71// actions (such as rendering) do. This behavior makes the most sense
72// for this action.
73//
74// EXTENDERS: The model and texture matrix elements are not enabled
75// for this action. Your transformation nodes must use the
76// getMatrix/getInverse calls and directly modify the matrices stored
77// in the action.
78//
80
142
143 SO_ACTION_HEADER(SoGetMatrixAction);
144
145 public:
158
159 // Destructor
160#ifndef HIDDEN_FROM_DOC
161 virtual ~SoGetMatrixAction();
162#endif // HIDDEN_FROM_DOC
163
167 void setViewportRegion(const SbViewportRegion &newRegion);
168
172 const SbViewportRegion &getViewportRegion() const { return vpRegion; }
173
179 SbMatrix & getMatrix() { return ctm; }
185 SbMatrix & getInverse() { return inv; }
186
192 SbMatrix & getTextureMatrix() { return texCtm; }
198 SbMatrix & getTextureInverse() { return texInv; }
199
200 private:
201 static void initClass();
202 static void exitClass();
203
204 private:
205 // Initiates action on graph
206 virtual void beginTraversal(SoNode *node);
207
208 private:
209 SbMatrix ctm; // Cumulative transformation matrix
210 SbMatrix inv; // Inverse transformation matrix
211 SbMatrix texCtm; // Cumulative texture transf matrix
212 SbMatrix texInv; // Inverse texture transf matrix
213 SbViewportRegion vpRegion; // Current viewport region
214
215};
216
217#endif /* _SO_GET_MATRIX_ACTION_ */
218
4x4 matrix class.
Definition SbMatrix.h:309
Class for representing a viewport.
Abstract base class for all actions.
Definition SoAction.h:132
Computes transformation matrix for a subgraph.
SbMatrix & getTextureMatrix()
Returns cumulative texture transformation matrix.
SbMatrix & getTextureInverse()
Returns the inverse of the cumulative texture transformation matrix.
SoGetMatrixAction(const SbViewportRegion &newRegion)
Constructor.
SbMatrix & getMatrix()
Returns cumulative transformation matrix.
void setViewportRegion(const SbViewportRegion &newRegion)
Sets current viewport region to use for action.
SbMatrix & getInverse()
Returns the inverse of the cumulative transformation matrix.
const SbViewportRegion & getViewportRegion() const
Returns current viewport region to use for action.
Abstract base class for all database nodes.
Definition SoNode.h:145