---

Ogre::WaveformControllerFunction Class Reference

Predefined controller function based on a waveform. More...

#include <OgrePredefinedControllers.h>

Inheritance diagram for Ogre::WaveformControllerFunction:

List of all members.

Public Methods
	WaveformControllerFunction (WaveformType wType, Real base=0, Real frequency=1, Real phase=0, Real amplitude=1, bool deltaInput=true)
	Default contructor, requires at least a wave type, other parameters can be defaulted unless required. More...
Real	calculate (Real source)
	Overriden function. More...
Protected Methods
Real	getAdjustedInput (Real input)
	Overridden from ControllerFunction. More...
Protected Attributes
WaveformType	mWaveType
Real	mBase
Real	mFrequency
Real	mPhase
Real	mAmplitude
bool	mDeltaInput
	If true, function will add imput values together and wrap at 1.0 before evaluating. More...
Real	mDeltaCount

---

Detailed Description

Predefined controller function based on a waveform.

Remarks:

A waveform function translates parametric intput to parametric output based on a wave. The factors affecting the function are:

• wave type - the shape of the wave
• base - the base value of the output from the wave
• frequency - the speed of the wave in cycles per second
• phase - the offset of the start of the wave, e.g. 0.5 to start half-way through the wave
• amplitude - scales the output so that instead of lying within [0,1] it lies within [0,1] * amplitude

Note that for simplicity of integration with the rest of the controller insfrastructure, the output of the wave is parametric i.e. 0..1, rather than the typical wave output of [-1,1]. To compensate for this, the traditional output of the wave is scaled by the following function before output:

output = (waveoutput + 1) * 0.5

Hence a wave output of -1 becomes 0, a wave ouput of 1 becomes 1, and a wave output of 0 becomes 0.5.

---

Constructor & Destructor Documentation

Ogre::WaveformControllerFunction::WaveformControllerFunction (  WaveformType    wType, Real    base = 0, Real    frequency = 1, Real    phase = 0, Real    amplitude = 1, bool    deltaInput = true )

Default contructor, requires at least a wave type, other parameters can be defaulted unless required. Parameters: deltaInput  If true, signifies that the input will be a delta value such that the function should add it to an internal counter before calculating the output.

---

Member Function Documentation

Real Ogre::WaveformControllerFunction::calculate (  Real    source )  [virtual]

Overriden function. Implements Ogre::ControllerFunction.

Real Ogre::WaveformControllerFunction::getAdjustedInput (  Real    input )  [protected]

Overridden from ControllerFunction. Reimplemented from Ogre::ControllerFunction.

---

Member Data Documentation

Real Ogre::WaveformControllerFunction::mAmplitude [protected]

Real Ogre::WaveformControllerFunction::mBase [protected]

Real Ogre::ControllerFunction::mDeltaCount [protected, inherited]

bool Ogre::ControllerFunction::mDeltaInput [protected, inherited]

If true, function will add imput values together and wrap at 1.0 before evaluating.

Real Ogre::WaveformControllerFunction::mFrequency [protected]

Real Ogre::WaveformControllerFunction::mPhase [protected]

WaveformType Ogre::WaveformControllerFunction::mWaveType [protected]

Copyright © 2002 by The OGRE Team