SphereCast.hpp

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/*============================================================================*/
#ifndef RAY_CASTING_SPHERE_CAST_HPP
#define RAY_CASTING_SPHERE_CAST_HPP
/*============================================================================*/
 
#include "UICanvas.hpp"
#include "DefaultBehavior.hpp"
#include "Vector3.hpp"
 
/*============================================================================*/
 
class SphereCanvas : public Sh::UICanvas {
public:
 
    SphereCanvas(const Sh::Frame& frame,
                 const int64_t& radius,
                 const Sh::Color& sphere_color,
                 const Sh::Color& floor_color,
                 const Sh::Color& light_color);
 
    ~SphereCanvas() override = default;
 
private:
 
    friend class CanvasBehavior;
 
    void update();
 
    Sh::Vector3<double> camera_position{0, 0, 1000};
    Sh::Vector3<double> light_source_position{400, 0, -400};
 
    static constexpr double ANGLE_STEP = 0.05;
    static constexpr uint8_t BG_LIGHT_INTENSITY = 40;
 
    const double SOURCE_RADIUS = light_source_position.x;
    double source_angle = 0;
 
    const int64_t sphere_radius;
 
    Sh::Color sphere_color,
              floor_color,
              light_color;
 
    void onRender() override;
 
    Sh::Color dot_color(double x, double y,
                        const Sh::Vector3<double>& light_source_pos);
 
};
 
/*----------------------------------------------------------------------------*/
 
class CanvasBehavior : public Sh::DefaultBehavior {
public:
 
    explicit CanvasBehavior(Sh::UIWindow* target);
 
    bool onTimer(Sh::TimerEvent& event) override;
 
};
 
/*============================================================================*/
#endif //RAY_CASTING_SPHERE_CAST_HPP
/*============================================================================*/