Open Inventor Release 2024.2.0
 
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SoDirectionalLight.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5 * UNPUBLISHED -- Rights reserved under the copyright laws of the United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) 1996-2019 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_DIRECTIONAL_LIGHT_
51#define _SO_DIRECTIONAL_LIGHT_
52
53#include <Inventor/fields/SoSFVec3f.h>
54#include <Inventor/nodes/SoLight.h>
55
57//
58// Class: SoDirectionalLight
59//
60// Directional light source node. A directional light illuminates in
61// rays parallel to a given direction vector. It is equivalent to the
62// GL's "infinite" light source, so named because it is like a point
63// source at an infinite distance (which seems to me to be a pretty
64// bizarre way of naming things.)
65//
67
159{
160 SO_NODE_HEADER( SoDirectionalLight );
161
162public:
167
172
173private:
174 // Creates a light source during rendering
175 virtual void GLRender( SoGLRenderAction* action );
176
177private:
178 static void initClass();
179 static void exitClass();
180
182 virtual SoCamera* getCamera( SoState* state, SoPath* scene, float visibilityLength );
183
184private:
185 virtual ~SoDirectionalLight();
186};
187
188#endif /* _SO_DIRECTIONAL_LIGHT_ */
Abstract base class for camera nodes.
Definition SoCamera.h:188
Node representing a directional light source.
SoSFVec3f direction
Illumination direction vector.
SoDirectionalLight()
Creates a directional light source node with default settings.
Renders a scene graph using Open Inventor's Render Engine.
Abstract base class for all light source nodes.
Definition SoLight.h:124
Path that points to a list of hierarchical nodes.
Definition SoPath.h:187
Field containing a three-dimensional vector.
Definition SoSFVec3f.h:80
Traversal state.
Definition SoState.h:74