peak_meter_viewer.h

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#pragma once
 
#include "JuceHeader.h"
#include "open_gl_component.h"
#include "synth_module.h"
 
class PeakMeterViewer : public OpenGlComponent {
public:
    PeakMeterViewer(bool left);
 
    virtual ~PeakMeterViewer();
 
    void resized() override;
 
    void init(OpenGlWrapper& open_gl) override;
 
    void render(OpenGlWrapper& open_gl, bool animate) override;
 
    void draw(OpenGlWrapper& open_gl);
 
    void destroy(OpenGlWrapper& open_gl) override;
 
    void paintBackground(Graphics& g) override;
 
private:
    void updateVertices();
 
    void updateVerticesMemory();
 
    static constexpr int kNumPositions = 8;     
    static constexpr int kNumTriangleIndices = 6; 
 
    const vital::StatusOutput* peak_output_;        
    const vital::StatusOutput* peak_memory_output_; 
 
    OpenGLShaderProgram* shader_; 
    std::unique_ptr<OpenGLShaderProgram::Attribute> position_;    
    std::unique_ptr<OpenGLShaderProgram::Uniform> color_from_;    
    std::unique_ptr<OpenGLShaderProgram::Uniform> color_to_;      
 
    float clamped_;                  
    float position_vertices_[kNumPositions]; 
    int position_triangles_[kNumTriangleIndices]; 
    GLuint vertex_buffer_;           
    GLuint triangle_buffer_;         
    bool left_;                      
 
    JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR(PeakMeterViewer)
};