MagicFilterPlot Class Reference

This will plot the frequency responce for a juce IIR filter. More...

#include <foleys_MagicFilterPlot.h>

Inheritance diagram for MagicFilterPlot:

Public Member Functions
	MagicFilterPlot ()
void	setIIRCoefficients (juce::dsp::IIR::Coefficients< float >::Ptr coefficients, float maxDB)
	Set new coefficients to calculate the frequency response from.
void	setIIRCoefficients (float gain, std::vector< juce::dsp::IIR::Coefficients< float >::Ptr > coefficients, float maxDB)
	Set new coefficients to calculate the frequency response from.
void	pushSamples (const juce::AudioBuffer< float > &buffer) override
	Does nothing in this class.
void	createPlotPaths (juce::Path &path, juce::Path &filledPath, juce::Rectangle< float > bounds, MagicPlotComponent &component) override
	This is the callback that creates the plot for drawing.
void	prepareToPlay (double sampleRate, int samplesPerBlockExpected) override
	This method is called by the MagicProcessorState to allow the plot computation to be set up.
Public Member Functions inherited from MagicPlotSource
	MagicPlotSource ()=default
virtual	~MagicPlotSource ()=default
virtual bool	isActive () const
	You can add an active state to your plot to allow to paint in different colours.
virtual void	setActive (bool shouldBeActive)
juce::int64	getLastDataUpdate () const
	Use this information to invalidate your plot drawing.
void	resetLastDataFlag ()
	Call this to invalidate the lastData flag.
virtual juce::TimeSliceClient *	getBackgroundJob ()
	If your plot needs background processing, return here a pointer to your TimeSliceClient, and it will automatically be added to the common background thread.

Detailed Description

This will plot the frequency responce for a juce IIR filter.

To use it, add it to the MagicPluginState. It will automatically update each time you set new coefficients using setIIRCoefficients.

Constructor & Destructor Documentation

MagicFilterPlot()

MagicFilterPlot

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Member Function Documentation

setIIRCoefficients() [1/2]

void setIIRCoefficients	(	juce::dsp::IIR::Coefficients< float >::Ptr	coefficients,
		float	maxDB )

Set new coefficients to calculate the frequency response from.

Parameters

coefficients	the coefficients to calculate the frequency response for
maxDB	is the maximum level in dB, that the curve will display

References MagicPlotSource::resetLastDataFlag().

setIIRCoefficients() [2/2]

void setIIRCoefficients	(	float	gain,
		std::vector< juce::dsp::IIR::Coefficients< float >::Ptr >	coefficients,
		float	maxDB )

Set new coefficients to calculate the frequency response from.

Parameters

gain	the overall added gain
coefficients	a vector of coefficients to sum up (multiply) to calculate the frequency response for
maxDB	is the maximum level in dB, that the curve will display

References MagicPlotSource::resetLastDataFlag().

pushSamples()

void pushSamples ( const juce::AudioBuffer< float > & buffer )

overridevirtual

Does nothing in this class.

Implements MagicPlotSource.

createPlotPaths()

void createPlotPaths ( juce::Path & path, juce::Path & filledPath, juce::Rectangle< float > bounds, MagicPlotComponent & component )

overridevirtual

This is the callback that creates the plot for drawing.

Parameters

path	is the path instance that is constructed by the MagicPlotSource
filledPath	is the path instance that is constructed by the MagicPlotSource to be filled
bounds	the bounds of the plot
component	grants access to the plot component, e.g. to find the colours from it

Implements MagicPlotSource.

prepareToPlay()

void prepareToPlay ( double sampleRate, int samplesPerBlockExpected )

overridevirtual

This method is called by the MagicProcessorState to allow the plot computation to be set up.

Implements MagicPlotSource.

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

• foleys_MagicFilterPlot.h
• foleys_MagicFilterPlot.cpp