light.h

#pragma once
 
#include <glm/glm.hpp>
 
#include "core/reflect.h"
#include "ecs/entity.h"
 
namespace Vkm::Engine {
 
class Scene;

enum class LightType {
    Directional = 0,
    Point       = 1,
    Spot        = 2,
    Rect        = 3,    
    Disk        = 4,    
    Count               
};

struct Light {
    LightType type      = LightType::Directional;
    glm::vec3 color     = {1.0f, 1.0f, 1.0f};
    float     intensity = 1.0f;
 
    float radius = 10.0f;                      
 
    float innerConeAngle = 0.5f;               
    float outerConeAngle = 0.785f;             
 
    float areaWidth  = 1.0f;                   
    float areaHeight = 1.0f;                   
    float areaRadius = 0.5f;                   
    bool  twoSided   = false;                  
 
    bool castShadows = true;

    float shadowBias = 0.005f;

    float shadowNormalBias = 1.5f;
    float shadowDistance   = 100.0f;  

    float sourceRadius = glm::radians(0.5f);
 
    bool enabled = true;
};

EntityId findKeyLight(const Scene& scene);
 
} // namespace Vkm::Engine
 
VKM_ENUM_NAMES(::Vkm::Engine::LightType, "Directional", "Point", "Spot", "Rect", "Disk")
 
VKM_REFLECT_BEGIN(::Vkm::Engine::Light)
    VKM_F(type)
    VKM_F(color)
    VKM_F(intensity)
    VKM_F(radius)
    VKM_F(innerConeAngle)
    VKM_F(outerConeAngle)
    VKM_F(areaWidth)
    VKM_F(areaHeight)
    VKM_F(areaRadius)
    VKM_F(twoSided)
    VKM_F(castShadows)
    VKM_F(shadowBias)
    VKM_F(shadowNormalBias)
    VKM_F(shadowDistance)
    VKM_F(sourceRadius)
    VKM_F(enabled)
VKM_REFLECT_END()