Open Inventor Release 2024.1.3
 
Loading...
Searching...
No Matches
SoNormalElement.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5 * UNPUBLISHED -- Rights reserved under the copyright laws of the United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_NORMAL_ELEMENT
51#define _SO_NORMAL_ELEMENT
52
53
54
55#include <Inventor/SbLinear.h>
56#include <Inventor/elements/SoReplacedElement.h>
57#include <Inventor/errors/SoDebugError.h>
58
73SoEXTENDER_Documented class SoNormalElement : public SoReplacedElement {
74
75 SO_ELEMENT_HEADER(SoNormalElement);
76
77 public:
82 static void set(SoState *state, SoNode *node,
83 int32_t numNormals, const SbVec3f *normals);
84
88 static const SoNormalElement * getInstance(SoState *state)
89 {return getConstElement<SoNormalElement>(state);}
90
94 int32_t getNum() const { return numNormals; }
95
99 const SbVec3f & get(int index) const
100 {
101 if (index < 0 || index >= numNormals)
102 {
103#if defined(_DEBUG)
104 SoDebugError::post("SoNormalElement::get",
105 "Index (%d) is out of range 0 - %d",
106 index, numNormals - 1);
107#endif
108 return defaultNormal;
109 }
110 return normals[index];
111 }
112
116 virtual void print(FILE *fp) const;
117
118private:
119
121 virtual void init(SoState *state);
122
123 private:
124 // Initializes the SoNormalElement class
125 static void initClass();
126 static void exitClass();
127
128 private:
129 int32_t numNormals;
130 const SbVec3f *normals;
131
132 virtual ~SoNormalElement();
133
134 private:
135 // This stores a pointer to the default normal so that we can set
136 // "normals" to point to it if no other normal has been set.
137 static SbVec3f defaultNormal;
138};
139
140#endif /* _SO_NORMAL_ELEMENT */
141
142
3D vector class.
Definition SbVec.h:932
static void post(const char *methodName, const char *formatString ...)
Posts an error.
Abstract base class for all database nodes.
Definition SoNode.h:145
Allows read-only access to the top element in the state.
int32_t getNum() const
Returns the number of normal vectors in an instance.
static const SoNormalElement * getInstance(SoState *state)
Returns the top (current) instance of the element in the state.
virtual void print(FILE *fp) const
Prints element (for debugging).
static void set(SoState *state, SoNode *node, int32_t numNormals, const SbVec3f *normals)
Sets the current normals.
const SbVec3f & get(int index) const
Returns the indexed normal from an element.
Abstract base class for each state element whose value is replaced whenever it is set.
Traversal state.
Definition SoState.h:74