terion/Source/VectorScope.h

#pragma once
#include <juce_audio_processors/juce_audio_processors.h>
#include <juce_opengl/juce_opengl.h>
#include "PluginProcessor.h"

class VectorScope : public juce::Component, private juce::Timer
{
public:
    explicit VectorScope(TerionProcessor& p);
    ~VectorScope() override;

    void paint(juce::Graphics& g) override;
    void resized() override;
    void timerCallback() override;

    float getRadius() const;
    void setScale(float s) { currentScale = s; }

private:
    TerionProcessor& processor;
    float currentScale = 1.0f;
    juce::Image trail;
    StereoMetrics cachedMetrics;
    int metricFrame = 0;
    static constexpr int kMetricsRateHz = 2;

    void drawLegends(juce::Graphics& g, float cx, float cy, float radius);
    void drawHairCross(juce::Graphics& g, float cx, float cy);
    void drawMetricsOverlay(juce::Graphics& g, const juce::Rectangle<int>& bounds);

    JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR(VectorScope)
};