PickingHelper.hpp

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#pragma once
#include "common.hpp"
#define SCALE_MAX 1.0 
#define SCALE_MIN 0.1 
class PickingHelper 
{
    public:

    static PickingHelper* getInstance();

    ~PickingHelper();

    void checkNN(const GLint* pickbuffer_window, const int x_size, const int y_size, const int x_center, const int y_center, int& id, double& distance);
    
    double scale_by_distance(double distance);

    double springInput(double lastValue, double targetValue, double deltaTime, double springConstant);

    double changeCutoffDistance(double deltaC)
    {
        m_mouse_cutoff_distance = glm::clamp(m_mouse_cutoff_distance + deltaC, 0.0, 2203.0); 
        m_pickingbuffer_window_width = 2 * m_mouse_cutoff_distance / sqrt(2.0f);
        return m_mouse_cutoff_distance;
    }; 

    double changeMinScale(double delta_m){m_mouse_min_scale = glm::clamp(m_mouse_min_scale + delta_m, SCALE_MIN, m_mouse_max_scale); return m_mouse_min_scale;};

    double changeMaxScale(double delta_M){m_mouse_max_scale = glm::clamp(m_mouse_max_scale + delta_M, m_mouse_min_scale, SCALE_MAX); return m_mouse_max_scale;};

    double changeInverseExponent(double delta_S){m_mouse_scaling_exponent = glm::clamp(m_mouse_scaling_exponent + delta_S, 0.5, 50.0); return m_mouse_scaling_exponent;};

    bool toggleNaiveSearch() {m_useNaiveSearch = !m_useNaiveSearch;return m_useNaiveSearch;};

    bool toggleLinearScaling() {m_useLinearScaling = !m_useLinearScaling;return m_useLinearScaling;};

    bool toggleBubbleCursor() {m_showBubbleCursor = !m_showBubbleCursor;return m_showBubbleCursor;};

    void togglePickbufferRectangle() {m_showPickbufferRectangle = !m_showPickbufferRectangle;};

    bool m_useLinearScaling; 
    bool m_useNaiveSearch; 
    bool m_showPickbufferRectangle; 
    bool m_showBubbleCursor; 
    int m_pickingbuffer_window_width; 
private:
    
    static PickingHelper* singletonPointer;

    PickingHelper();

    void checkNN_sophisticated(const GLint* pickbuffer_window, const int x_size, const int y_size, const int x_center, const int y_center, int& id, double& distance);

    void checkNN_naive(const GLint* pickbuffer_window, const int x_size, const int y_size, const int x_center, const int y_center, int& id, double& distance);

    double mouse_scale_linear(double distance);

    double mouse_scale_inverse(double distance);

    //VARIABLES
    double m_mouse_min_scale; 
    double m_mouse_max_scale; 
    double m_mouse_cutoff_distance; 
    double m_mouse_scaling_exponent; 
};