Simple linear interpolation tool (also known as mix() in GLSL). The main purpose of this template class is making interpolation routines more readable.
More...
#include <NCollection_Lerp.hxx>

 NCollection_Lerp () 
 Empty constructor. More...


 NCollection_Lerp (const T &theStart, const T &theEnd) 
 Main constructor. More...


void  Init (const T &theStart, const T &theEnd) 
 Initialize values. More...


void  Interpolate (double theT, T &theResult) const 
 Compute interpolated value between two values. More...


template<> 
void  Interpolate (const double theT, Handle< Graphic3d_Camera > &theResult) const 
 Linear interpolation tool for camera orientation and position. This tool interpolates camera parameters scale, eye, center, rotation (up and direction vectors) independently. More...



static T  Interpolate (const T &theStart, const T &theEnd, double theT) 
 Compute interpolated value between two values. More...


template<class T>
class NCollection_Lerp< T >
Simple linear interpolation tool (also known as mix() in GLSL). The main purpose of this template class is making interpolation routines more readable.
◆ NCollection_Lerp() [1/2]
◆ NCollection_Lerp() [2/2]
◆ Init()
◆ Interpolate() [1/3]
template<class T>
static T NCollection_Lerp< T >::Interpolate 
( 
const T & 
theStart, 


const T & 
theEnd, 


double 
theT 

) 
 

inlinestatic 
Compute interpolated value between two values.
 Parameters

theStart  first value 
theEnd  second value 
theT  normalized interpolation coefficient within [0, 1] range, with 0 pointing to theStart and 1 to theEnd. 
◆ Interpolate() [2/3]
Compute interpolated value between two values.
 Parameters

theT  normalized interpolation coefficient within [0, 1] range, with 0 pointing to first value and 1 to the second value. 
theResult  [out] interpolated value 
◆ Interpolate() [3/3]
Linear interpolation tool for camera orientation and position. This tool interpolates camera parameters scale, eye, center, rotation (up and direction vectors) independently.
Eye/Center interpolation is performed through defining an anchor point inbetween Center and Eye. The anchor position is defined as point near to the camera point which has smaller translation part. The main idea is to keep the distance between Center and Eye (which will change if Center and Eye translation will be interpolated independently). E.g.:
 When both Center and Eye are moved at the same vector > both will be just translated by straight line
 When Center is not moved > camera Eye will move around Center through arc
 When Eye is not moved > camera Center will move around Eye through arc
 When both Center and Eye are move by different vectors > transformation will be something in between, and will try interpolate linearly the distance between Center and Eye.
This transformation might be not in line with user expectations. In this case, application might define intermediate camera positions for interpolation or implement own interpolation logic.
The documentation for this class was generated from the following file: