Open Inventor Release 2024.2.0
 
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SoLight.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5 * UNPUBLISHED -- Rights reserved under the copyright laws of the United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) 1996-2021 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_LIGHT_
51#define _SO_LIGHT_
52
53#include <Inventor/nodes/SoNode.h>
54#include <Inventor/fields/SoSFBool.h>
55#include <Inventor/fields/SoSFColor.h>
56#include <Inventor/fields/SoSFFloat.h>
57#include <Inventor/SbViewportRegion.h>
58
59class SoCamera;
60
62//
63// Class: SoLight
64//
65// Abstract base light source node.
66//
68
123class SoLight : public SoNode
124{
125
126 SO_NODE_ABSTRACT_HEADER( SoLight );
127
128public:
134
140
145
146private:
148 virtual void callback( SoCallbackAction* action );
149
151 virtual void doAction( SoAction* action );
152
153private:
155 virtual inline SoCamera* getCamera( SoState* state, SoPath* scene, float visibilityLength );
156
157 static void initClass();
158 static void exitClass();
159
160 // Returns the light Id.
161 int32_t getLightId() const;
162
163 struct LightConfiguration
164 {
165 bool enabled;
166 SbVec4f position;
167 SbMatrix transform;
168
169 SbVec3f spotDirection;
170 float spotExponent;
171 float spotCutoff;
172
173 SbVec4f ambientIntensity;
174 SbVec4f diffuseIntensity;
175 SbVec4f specularIntensity;
176
177 float constantAttenuation;
178 float linearAttenuation;
179 float quadraticAttenuation;
180
181 LightConfiguration()
182 : transform(1, 0, 0, 0,
183 0, 1, 0, 0,
184 0, 0, 1, 0,
185 0, 0, 0, 1)
186 {
187 enabled = false;
188 position = SbVec4f( 0, 0, 0, 0 );
189 spotDirection = SbVec3f( 0, 0, -1 );
190 spotExponent = 0.0f;
191 spotCutoff = 180.0f;
192 ambientIntensity = SbVec4f( 0, 0, 0, 1 );
193 diffuseIntensity = SbVec4f( 1, 1, 1, 1 );
194 specularIntensity = SbVec4f( 1, 1, 1, 1 );
195 constantAttenuation = 1.0f;
196 linearAttenuation = 0.0f;
197 quadraticAttenuation = 0.0f;
198 }
199 };
200
201 LightConfiguration lightConfiguration;
202
203private:
204 struct Members
205 {
206 Members();
207 ~Members();
208 void unref();
209
210 int32_t m_lightId;
212 SoCamera* m_camera;
213 };
214 Members m_members;
215
217 static SoLight::Members* getMembers( const SoLight* sg );
218
219 SoLight(); // Makes this abstract
220
221 virtual ~SoLight();
222};
223
224/*******************************************************************************/
226SoLight::getCamera( SoState*, SoPath*, float )
227{
228 return NULL;
229}
230
231#endif /* _SO_LIGHT_ */
4x4 matrix class.
Definition SbMatrix.h:309
3D vector class.
Definition SbVec.h:932
4D vector class.
Definition SbVec.h:2214
Abstract base class for all actions.
Definition SoAction.h:132
Performs a generic traversal of a scene graph or path.
Abstract base class for camera nodes.
Definition SoCamera.h:188
Abstract base class for all light source nodes.
Definition SoLight.h:124
SoSFColor color
Light source illumination color.
Definition SoLight.h:144
SoSFFloat intensity
Illumination intensity of light source.
Definition SoLight.h:139
SoSFBool on
Determines whether the source is active or inactive.
Definition SoLight.h:133
Abstract base class for all database nodes.
Definition SoNode.h:145
Path that points to a list of hierarchical nodes.
Definition SoPath.h:187
Field containing a single Boolean value.
Definition SoSFBool.h:79
Field containing an RGB color.
Definition SoSFColor.h:82
Field containing a floating-point value.
Definition SoSFFloat.h:78
Traversal state.
Definition SoState.h:74