SGInterpTable Class Reference

A class that provids a simple linear 2d interpolation lookup table. More...

#include <interpolater.hxx>

Inheritance diagram for SGInterpTable:

List of all members.

Public Member Functions
	SGInterpTable ()
	Constructor.
	SGInterpTable (const SGPropertyNode *interpolation)
	Constructor.
	SGInterpTable (const string &file)
	Constructor.
void	addEntry (double ind, double dep)
	Add an entry to the table, extending the table's length.
double	interpolate (double x) const
	Given an x value, linearly interpolate the y value from the table.
	~SGInterpTable ()
	Destructor.

---

Detailed Description

A class that provids a simple linear 2d interpolation lookup table.

The actual table is expected to be loaded from a file. The independant variable must be strictly ascending. The dependent variable can be anything.

Definition at line 53 of file interpolater.hxx.

---

Constructor & Destructor Documentation

SGInterpTable::SGInterpTable

(

)

Constructor.

Creates a new, empty table.

Definition at line 39 of file interpolater.cxx.

SGInterpTable::SGInterpTable

(

const SGPropertyNode *

interpolation

)

Constructor.

Loads the interpolation table from an interpolation property node.

Parameters:

interpolation

property node having entry children

Definition at line 43 of file interpolater.cxx.

References addEntry(), and SGPropertyNode::getChildren().

SGInterpTable::SGInterpTable

(

const string &

file

)

Constructor.

Loads the interpolation table from the specified file.

Parameters:

file

name of interpolation file

Definition at line 55 of file interpolater.cxx.

References sg_gzifstream::is_open(), SG_LOG, skipcomment(), and skipws().

---

Member Function Documentation

void SGInterpTable::addEntry	(	double	ind,
		double	dep
	)

Add an entry to the table, extending the table's length.

Parameters:

	ind	The independent variable.
	dep	The dependent variable.

Definition at line 76 of file interpolater.cxx.

Referenced by SGInterpTable().

double SGInterpTable::interpolate

(

double

x

)

const

Given an x value, linearly interpolate the y value from the table.

Parameters:

x

independent variable

Returns:

interpolated dependent variable

Definition at line 82 of file interpolater.cxx.

Referenced by SGDistScaleAnimation::distScaleCallback(), SGTexTranslateAnimation::update(), SGTexRotateAnimation::update(), SGScaleAnimation::update(), SGTranslateAnimation::update(), SGBlendAnimation::update(), and SGRotateAnimation::update().

---

The documentation for this class was generated from the following files:

• interpolater.hxx
• interpolater.cxx

---