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00001 /**************************************************************************\ 00002 * 00003 * This file is part of the Coin 3D visualization library. 00004 * Copyright (C) 1998-2007 by Systems in Motion. All rights reserved. 00005 * 00006 * This library is free software; you can redistribute it and/or 00007 * modify it under the terms of the GNU General Public License 00008 * ("GPL") version 2 as published by the Free Software Foundation. 00009 * See the file LICENSE.GPL at the root directory of this source 00010 * distribution for additional information about the GNU GPL. 00011 * 00012 * For using Coin with software that can not be combined with the GNU 00013 * GPL, and for taking advantage of the additional benefits of our 00014 * support services, please contact Systems in Motion about acquiring 00015 * a Coin Professional Edition License. 00016 * 00017 * See http://www.coin3d.org/ for more information. 00018 * 00019 * Systems in Motion, Postboks 1283, Pirsenteret, 7462 Trondheim, NORWAY. 00020 * http://www.sim.no/ sales@sim.no coin-support@coin3d.org 00021 * 00022 \**************************************************************************/ 00023 00024 #ifndef COIN_SBBASIC_H 00025 #define COIN_SBBASIC_H 00026 00027 /* *********************************************************************** */ 00028 00029 #include <Inventor/C/basic.h> 00030 #ifndef NDEBUG 00031 #include <Inventor/C/errors/debugerror.h> 00032 #endif // !NDEBUG 00033 00034 /* *********************************************************************** */ 00035 /* Trap people trying to use Inventor headers while compiling C source code. 00036 * (we get support mail about this from time to time) 00037 */ 00038 #ifndef __cplusplus 00039 #error You are not compiling C++ - maybe your source file is named <file>.c 00040 #endif 00041 00042 /* *********************************************************************** */ 00043 /* Include these for Open Inventor compatibility reasons (they are not 00044 * actually used in Coin.) 00045 */ 00046 #define SoEXTENDER 00047 #define SoINTERNAL 00048 00049 /* *********************************************************************** */ 00050 00051 /* Some useful inline template functions: 00052 * SbAbs(Val) - returns absolute value 00053 * SbMin(Val1, Val2) - returns minimum value 00054 * SbMax(Val1, Val2) - returns maximum value 00055 * SbClamp(Val, Min, Max) - returns clamped value 00056 * SbSwap(Val1, Val2) - swaps the two values (no return value) 00057 * SbSqr(val) - returns (val)² 00058 */ 00059 00060 template <class Type> 00061 inline Type SbAbs( Type Val ) { 00062 return (Val < 0) ? 0 - Val : Val; 00063 } 00064 00065 template <class Type> 00066 inline Type SbMax( const Type A, const Type B ) { 00067 return (A < B) ? B : A; 00068 } 00069 00070 template <class Type> 00071 inline Type SbMin( const Type A, const Type B ) { 00072 return (A < B) ? A : B; 00073 } 00074 00075 template <class Type> 00076 inline Type SbClamp( const Type Val, const Type Min, const Type Max ) { 00077 return (Val < Min) ? Min : (Val > Max) ? Max : Val; 00078 } 00079 00080 template <class Type> 00081 inline void SbSwap( Type & A, Type & B ) { 00082 Type T; T = A; A = B; B = T; 00083 } 00084 00085 template <class Type> 00086 inline Type SbSqr(const Type val) { 00087 return val * val; 00088 } 00089 00090 /* *********************************************************************** */ 00091 00092 template <typename Type> 00093 inline void SbDividerChk(const char * funcname, Type divider) { 00094 #ifndef NDEBUG 00095 if (!(divider != static_cast<Type>(0))) 00096 cc_debugerror_post(funcname, "divide by zero error.", divider); 00097 #endif // !NDEBUG 00098 } 00099 00100 /* *********************************************************************** */ 00101 00102 /* COMPILER BUG WORKAROUND: 00103 00104 We've had reports that Sun CC v4.0 is (likely) buggy, and doesn't 00105 allow a statement like 00106 00107 SoType SoNode::classTypeId = SoType::badType(); 00108 00109 As a hack we can however get around this by instead writing it as 00110 00111 SoType SoNode::classTypeId; 00112 00113 ..as the SoType variable will then be initialized to bitpattern 00114 0x0000, which equals SoType::badType(). We can *however* not do 00115 this for the Intel C/C++ compiler, as that does *not* init to the 00116 0x0000 bitpattern (which may be a separate bug -- I haven't read 00117 the C++ spec closely enough to decide whether that relied on 00118 unspecified behavior or not). 00119 00120 The latest version of the Intel compiler has been tested to still 00121 have this problem, so I've decided to re-install the old code, but 00122 in this form: 00123 00124 SoType SoNode::classTypeId STATIC_SOTYPE_INIT; 00125 00126 ..so it is easy to revert if somebody complains that the code 00127 reversal breaks their old Sun CC 4.0 compiler -- see the #define of 00128 STATIC_SOTYPE_INIT below. 00129 00130 If that happens, we should work with the reporter, having access to 00131 the buggy compiler, to make a configure check which sets the 00132 SUN_CC_4_0_SOTYPE_INIT_BUG #define in include/Inventor/C/basic.h.in. 00133 00134 (Note that the Sun CC compiler has moved on, and a later version 00135 we've tested, 5.4, does not have the bug.) 00136 00137 20050105 mortene. 00138 */ 00139 00140 #define SUN_CC_4_0_SOTYPE_INIT_BUG 0 /* assume compiler is ok for now */ 00141 00142 #if SUN_CC_4_0_SOTYPE_INIT_BUG 00143 #define STATIC_SOTYPE_INIT 00144 #else 00145 #define STATIC_SOTYPE_INIT = SoType::badType() 00146 #endif 00147 00148 /* *********************************************************************** */ 00149 00150 #endif /* !COIN_SBBASIC_H */
Copyright © 1998-2007 by Systems in Motion AS. All rights reserved.
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