SoInterpolate.h
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#ifndef COIN_SOINTERPOLATE_H
#define COIN_SOINTERPOLATE_H
#include <Inventor/engines/SoSubEngine.h>
#include <Inventor/engines/SoEngineOutput.h>
#include <Inventor/fields/SoSFFloat.h>
class COIN_DLL_API SoInterpolate : public SoEngine {
typedef SoEngine inherited;
SO_ENGINE_ABSTRACT_HEADER(SoInterpolate);
public:
static void initClass(void);
static void initClasses(void);
SoSFFloat alpha;
SoEngineOutput output; // type varies for subclasses
protected:
SoInterpolate();
virtual ~SoInterpolate(void);
};
#define SO_INTERPOLATE_HEADER(_class_) \
SO_ENGINE_HEADER(_class_); \
public: \
_class_(); \
static void initClass(); \
protected: \
virtual ~_class_(); \
private: \
virtual void evaluate()
#define PRIVATE_SO_INTERPOLATE_CONSTRUCTOR(_class_, _type_, _valtype_, _default0_, _default1_) \
SO_ENGINE_CONSTRUCTOR(_class_); \
SO_ENGINE_ADD_INPUT(alpha, (0.0f)); \
SO_ENGINE_ADD_INPUT(input0, _default0_); \
SO_ENGINE_ADD_INPUT(input1, _default1_); \
SO_ENGINE_ADD_OUTPUT(output, _type_)
#define PRIVATE_SO_INTERPOLATE_DESTRUCTOR(_class_) \
_class_::~_class_() \
{ \
}
#define PRIVATE_SO_INTERPOLATE_EVALUATE(_class_, _type_, _valtype_, _interpexp_) \
void \
_class_::evaluate(void) \
{ \
int n0 = this->input0.getNum(); \
int n1 = this->input1.getNum(); \
float a = this->alpha.getValue(); \
for (int i = SbMax(n0, n1) - 1; i >= 0; i--) { \
_valtype_ v0 = this->input0[SbMin(i, n0-1)]; \
_valtype_ v1 = this->input1[SbMin(i, n1-1)]; \
SO_ENGINE_OUTPUT(output, _type_, set1Value(i, _interpexp_)); \
} \
}
// Considering the number of lines of code needed to implement
// the evaluate() method in each class, I'm amazed it is defined in
// a macro and not simply implemented for each class. But, I guess
// we'll have to supply this macro to keep the OIV compatibility,
// so here it is. Check the interpolator classes for examples on
// how to use it.
// pederb, 20000309
//
// There's another version of this macro for internal use in the
// SoSubEngineP.h file, so match any changes you do here with that
// macro also -- if applicable.
//
// mortene, 20000505
#define SO_INTERPOLATE_SOURCE(_class_, _type_, _valtype_, _default0_, _default1_, _interpexp_) \
\
SO_ENGINE_SOURCE(_class_); \
\
_class_::_class_(void) \
{ \
PRIVATE_SO_INTERPOLATE_CONSTRUCTOR(_class_, _type_, _valtype_, _default0_, _default1_); \
this->isBuiltIn = FALSE; \
} \
\
PRIVATE_SO_INTERPOLATE_DESTRUCTOR(_class_) \
PRIVATE_SO_INTERPOLATE_EVALUATE(_class_, _type_, _valtype_, _interpexp_)
#define SO_INTERPOLATE_INITCLASS(_class_, _classname_) \
\
void \
_class_::initClass(void) \
{ \
SO_ENGINE_INIT_CLASS(_class_, SoInterpolate, "SoInterpolate"); \
}
#ifndef COIN_INTERNAL
// Include these header files for better Open Inventor compatibility.
#include <Inventor/engines/SoInterpolateFloat.h>
#include <Inventor/engines/SoInterpolateVec2f.h>
#include <Inventor/engines/SoInterpolateVec3f.h>
#include <Inventor/engines/SoInterpolateVec4f.h>
#include <Inventor/engines/SoInterpolateRotation.h>
#endif // !COIN_INTERNAL
#endif // !COIN_SOINTERPOLATE_H
SoEngine::initClass
static void initClass(void)
Sets up initialization for data common to all instances of this class, like submitting necessary info...
Definition SoEngine.cpp:162
SoEngine::SoEngine
SoEngine(void)
Definition SoEngine.cpp:101
SoEngine::initClasses
static void initClasses(void)
Definition SoEngine.cpp:175
SoInterpolate::output
SoEngineOutput output
Definition SoInterpolate.h:50
SoInterpolate::alpha
SoSFFloat alpha
Definition SoInterpolate.h:49
SoInterpolate::SoInterpolate
SoInterpolate()
Definition SoInterpolate.cpp:79
SoSFFloat
The SoSFFloat class is a container for a floating point value.
Definition SoSFFloat.h:39