| http://www.sim.no/ http://www.coin3d.org/

- Main Page
- Related Pages
- Modules
- Classes
- Files

- File List
- File Members

SoInterpolate.h
1 /**************************************************************************\
2 *
3 * This file is part of the Coin 3D visualization library.
4 * Copyright (C) by Kongsberg Oil & Gas Technologies.
5 *
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License
8 * ("GPL") version 2 as published by the Free Software Foundation.
9 * See the file LICENSE.GPL at the root directory of this source
10 * distribution for additional information about the GNU GPL.
11 *
12 * For using Coin with software that can not be combined with the GNU
13 * GPL, and for taking advantage of the additional benefits of our
14 * support services, please contact Kongsberg Oil & Gas Technologies
15 * about acquiring a Coin Professional Edition License.
16 *
17 * See http://www.coin3d.org/ for more information.
18 *
19 * Kongsberg Oil & Gas Technologies, Bygdoy Alle 5, 0257 Oslo, NORWAY.
20 * http://www.sim.no/ sales@sim.no coin-support@coin3d.org
21 *
22 \**************************************************************************/
23
24 #ifndef COIN_SOINTERPOLATE_H
25 #define COIN_SOINTERPOLATE_H
26
27
28 #include <Inventor/engines/SoSubEngine.h>
29 #include <Inventor/engines/SoEngineOutput.h>
30 #include <Inventor/fields/SoSFFloat.h>
31
32 class COIN_DLL_API SoInterpolate : public SoEngine {
33 typedef SoEngine inherited;
34 SO_ENGINE_ABSTRACT_HEADER(SoInterpolate);
35
36 public:
37 static void initClass(void);
38 static void initClasses(void);
39
40 SoSFFloat alpha;
41 SoEngineOutput output; // type varies for subclasses
42
43 protected:
44 SoInterpolate();
45 virtual ~SoInterpolate(void);
46 };
47
48
49
51
52
53 #define SO_INTERPOLATE_HEADER(_class_) \
54 SO_ENGINE_HEADER(_class_); \
55 public: \
56 _class_(); \
57 static void initClass(); \
58 protected: \
59 virtual ~_class_(); \
60 private: \
61 virtual void evaluate()
62
63
64 #define PRIVATE_SO_INTERPOLATE_CONSTRUCTOR(_class_, _type_, _valtype_, _default0_, _default1_) \
65 SO_ENGINE_CONSTRUCTOR(_class_); \
66 SO_ENGINE_ADD_INPUT(alpha, (0.0f)); \
67 SO_ENGINE_ADD_INPUT(input0, _default0_); \
68 SO_ENGINE_ADD_INPUT(input1, _default1_); \
69 SO_ENGINE_ADD_OUTPUT(output, _type_)
70
71 #define PRIVATE_SO_INTERPOLATE_DESTRUCTOR(_class_) \
72 _class_::~_class_() \
73 { \
74 }
75
76 #define PRIVATE_SO_INTERPOLATE_EVALUATE(_class_, _type_, _valtype_, _interpexp_) \
77 void \
78 _class_::evaluate(void) \
79 { \
80 int n0 = this->input0.getNum(); \
81 int n1 = this->input1.getNum(); \
82 float a = this->alpha.getValue(); \
83 for (int i = SbMax(n0, n1) - 1; i >= 0; i--) { \
84 _valtype_ v0 = this->input0[SbMin(i, n0-1)]; \
85 _valtype_ v1 = this->input1[SbMin(i, n1-1)]; \
86 SO_ENGINE_OUTPUT(output, _type_, set1Value(i, _interpexp_)); \
87 } \
88 }
89
90
91 // Considering the number of lines of code needed to implement
92 // the evaluate() method in each class, I'm amazed it is defined in
93 // a macro and not simply implemented for each class. But, I guess
94 // we'll have to supply this macro to keep the OIV compatibility,
95 // so here it is. Check the interpolator classes for examples on
96 // how to use it.
97 // pederb, 20000309
98 //
99 // There's another version of this macro for internal use in the
100 // SoSubEngineP.h file, so match any changes you do here with that
101 // macro also -- if applicable.
102 //
103 // mortene, 20000505
104
105 #define SO_INTERPOLATE_SOURCE(_class_, _type_, _valtype_, _default0_, _default1_, _interpexp_) \
106 \
107 SO_ENGINE_SOURCE(_class_); \
108 \
109 _class_::_class_(void) \
110 { \
111 PRIVATE_SO_INTERPOLATE_CONSTRUCTOR(_class_, _type_, _valtype_, _default0_, _default1_); \
112 this->isBuiltIn = FALSE; \
113 } \
114 \
115 PRIVATE_SO_INTERPOLATE_DESTRUCTOR(_class_) \
116 PRIVATE_SO_INTERPOLATE_EVALUATE(_class_, _type_, _valtype_, _interpexp_)
117
118
119 #define SO_INTERPOLATE_INITCLASS(_class_, _classname_) \
120 \
121 void \
122 _class_::initClass(void) \
123 { \
124 SO_ENGINE_INIT_CLASS(_class_, SoInterpolate, "SoInterpolate"); \
125 }
126
127
129
130
131 #ifndef COIN_INTERNAL
132 // Include these header files for better Open Inventor compatibility.
133 #include <Inventor/engines/SoInterpolateFloat.h>
134 #include <Inventor/engines/SoInterpolateVec2f.h>
135 #include <Inventor/engines/SoInterpolateVec3f.h>
136 #include <Inventor/engines/SoInterpolateVec4f.h>
137 #include <Inventor/engines/SoInterpolateRotation.h>
138 #endif // !COIN_INTERNAL
139
140
141 #endif // !COIN_SOINTERPOLATE_H

Copyright © 1998-2010 by Kongsberg Oil & Gas Technologies. All rights reserved.