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Source/Components/Displays/DistortionVisualizer.cpp Normal file
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/*
==============================================================================
DistortionVisualizer.cpp
Created: 23 Jan 2024 9:12:52pm
Author: binya
==============================================================================
*/
#include <JuceHeader.h>
#include "DistortionVisualizer.h"
DistortionVisualizer::DistortionVisualizer(APVTS& apvts, int sampleRate) : apvts(apvts), inputBuffer(1, WINDOW_LENGTH),
densityAttachment(*apvts.getParameter(PluginParameters::DISTORTION_DENSITY), [this](float newValue) { distortionDensity = newValue; repaint(); }, apvts.undoManager),
mixAttachment(*apvts.getParameter(PluginParameters::DISTORTION_MIX), [this](float newValue) { distortionMix = newValue; repaint(); }, apvts.undoManager)
{
densityAttachment.sendInitialUpdate();
mixAttachment.sendInitialUpdate();
distortion.initialize(1, sampleRate);
}
void DistortionVisualizer::paint(juce::Graphics& g)
{
auto theme = getTheme();
// Fill the input buffer with a pre-chosen wave
for (int i = 0; i < WINDOW_LENGTH; i++)
inputBuffer.setSample(0, i, sinf(juce::MathConstants<float>::twoPi * i * SINE_HZ / WINDOW_LENGTH) + cosf(2.5f * juce::MathConstants<float>::pi * i * SINE_HZ / WINDOW_LENGTH));
distortion.updateParams(distortionDensity, 0.f, distortionMix);
distortion.process(inputBuffer, inputBuffer.getNumSamples());
auto range = inputBuffer.findMinMax(0, 0, inputBuffer.getNumSamples()).getLength() / 2.f;
// Draw the resulting waveform
juce::Path path;
int numPointsPerPixel = 10;
for (int i = 0; i < getWidth() * numPointsPerPixel; i++)
{
float pos = float(i) / numPointsPerPixel;
float sample = inputBuffer.getSample(0, int(pos * WINDOW_LENGTH / getWidth()));
float y = juce::jmap<float>(sample, -range, range, float(getHeight()) * 0.98f, getHeight() * 0.02f);
if (i == 0)
path.startNewSubPath(0, y);
else
path.lineTo(float(pos), y);
}
auto strokeWidth = getWidth() * Layout::fxDisplayStrokeWidth;
g.setColour(theme.dark);
g.strokePath(path, juce::PathStrokeType(strokeWidth));
if (!isEnabled())
g.fillAll(theme.background.withAlpha(0.5f));
}
void DistortionVisualizer::enablementChanged()
{
repaint();
}