00001 /*======================================================================= 00002 * Copyright 1991-1996, Silicon Graphics, Inc. 00003 * ALL RIGHTS RESERVED 00004 * 00005 * UNPUBLISHED -- Rights reserved under the copyright laws of the United 00006 * States. Use of a copyright notice is precautionary only and does not 00007 * imply publication or disclosure. 00008 * 00009 * U.S. GOVERNMENT RESTRICTED RIGHTS LEGEND: 00010 * Use, duplication or disclosure by the Government is subject to restrictions 00011 * as set forth in FAR 52.227.19(c)(2) or subparagraph (c)(1)(ii) of the Rights 00012 * in Technical Data and Computer Software clause at DFARS 252.227-7013 and/or 00013 * in similar or successor clauses in the FAR, or the DOD or NASA FAR 00014 * Supplement. Contractor/manufacturer is Silicon Graphics, Inc., 00015 * 2011 N. Shoreline Blvd. Mountain View, CA 94039-7311. 00016 * 00017 * THE CONTENT OF THIS WORK CONTAINS CONFIDENTIAL AND PROPRIETARY 00018 * INFORMATION OF SILICON GRAPHICS, INC. ANY DUPLICATION, MODIFICATION, 00019 * DISTRIBUTION, OR DISCLOSURE IN ANY FORM, IN WHOLE, OR IN PART, IS STRICTLY 00020 * PROHIBITED WITHOUT THE PRIOR EXPRESS WRITTEN PERMISSION OF SILICON 00021 * GRAPHICS, INC. 00022 **=======================================================================*/ 00023 /*======================================================================= 00024 ** Author : Paul S. Strauss (MMM yyyy) 00025 ** Modified by : Ronen Barzel (MMM yyyy) 00026 **=======================================================================*/ 00027 /*======================================================================= 00028 *** THE CONTENT OF THIS WORK IS PROPRIETARY TO FEI S.A.S, (FEI S.A.S.), *** 00029 *** AND IS DISTRIBUTED UNDER A LICENSE AGREEMENT. *** 00030 *** *** 00031 *** REPRODUCTION, DISCLOSURE, OR USE, IN WHOLE OR IN PART, OTHER THAN AS *** 00032 *** SPECIFIED IN THE LICENSE ARE NOT TO BE UNDERTAKEN EXCEPT WITH PRIOR *** 00033 *** WRITTEN AUTHORIZATION OF FEI S.A.S. *** 00034 *** *** 00035 *** RESTRICTED RIGHTS LEGEND *** 00036 *** USE, DUPLICATION, OR DISCLOSURE BY THE GOVERNMENT OF THE CONTENT OF THIS *** 00037 *** WORK OR RELATED DOCUMENTATION IS SUBJECT TO RESTRICTIONS AS SET FORTH IN *** 00038 *** SUBPARAGRAPH (C)(1) OF THE COMMERCIAL COMPUTER SOFTWARE RESTRICTED RIGHT *** 00039 *** CLAUSE AT FAR 52.227-19 OR SUBPARAGRAPH (C)(1)(II) OF THE RIGHTS IN *** 00040 *** TECHNICAL DATA AND COMPUTER SOFTWARE CLAUSE AT DFARS 52.227-7013. *** 00041 *** *** 00042 *** COPYRIGHT (C) 1996-2014 BY FEI S.A.S, *** 00043 *** BORDEAUX, FRANCE *** 00044 *** ALL RIGHTS RESERVED *** 00045 **=======================================================================*/ 00046 /*======================================================================= 00047 ** Modified by : VSG (MMM YYYY) 00048 **=======================================================================*/ 00049 00050 00051 #ifndef _SO_FIELD_CONVERTER_ 00052 #define _SO_FIELD_CONVERTER_ 00053 00054 #include <Inventor/SoDB.h> 00055 #include <Inventor/engines/SoSubEngine.h> 00056 00058 // 00059 // Class: SoFieldConverter 00060 // 00061 // Abstract base class for all field converter engines. A field 00062 // converter engine is used to convert the value of a field of one 00063 // type to another. These engines are registered with the global 00064 // database so connections between fields of different types can be 00065 // made by automatically inserting a converter instance. 00066 // A single class of converter engine may be registered for several 00067 // different conversions. 00068 // Field converters are never written to file 00069 // (SoField::writeConnection takes care of that). 00070 // 00072 00073 00074 { 00075 00076 SO_ENGINE_ABSTRACT_HEADER(SoFieldConverter); 00077 00078 public: 00079 // These must be defined in each subclass. They return the input 00080 // and output connections of the given types. 00081 virtual SoField * getInput(SoType type) = 0; 00082 virtual SoEngineOutput * getOutput(SoType type) = 0; 00083 00084 // Returns the input that is connected. By default, this searches 00085 // through the field data for the field that is connected; 00086 // you can redefine to make more efficient. 00087 virtual SoField * getConnectedInput(); 00088 00089 private: 00090 static void initClass(); 00091 static void exitClass(); 00092 static void initClasses(); // init all builtin converters 00093 static void exitClasses(); 00094 00095 // Adds all fields connected from the output of the converter to 00096 // the given list 00097 int getForwardConnections(SoFieldList &list) const; 00098 00099 private: 00100 SoFieldConverter(); 00101 00102 virtual ~SoFieldConverter(); 00103 }; 00104 00105 #endif /* _SO_FIELD_CONVERTER_ */ 00106 00107 00108