Ground.h

//
//  Ground.h
//  avara3d
//
//  Created by Morgan Davis on 8/9/26.
//  Copyright © 2026 Morgan K Davis. All rights reserved.
//
 
#ifndef AVARA3D_VISUAL_GROUND_H
#define AVARA3D_VISUAL_GROUND_H
 
#include "a3d/Color.h"
 
#include <memory>
#include <optional>
#include <variant>
 
#include "a3d/Math.h"
 
namespace a3d {
 
class Material;
 
struct Ground {
 
    // [Public Types]
 
    struct Procedural {
 
        // [Public Types]
 
        struct GridComponent {
 
            // [Public Member Variables]
 
            Color color {};                 
            float spacing {1.0f}; 
            float lineWidthPixels {1.0f}; 
            float reliefStrength {0.0f}; 
        };
 
        struct Grid {
 
            // [Public Member Variables]
 
            Color                        color {}; 
            std::optional<GridComponent> minor {}; 
            std::optional<GridComponent> major {}; 
            float                        specularIntensity {
                0.15f}; 
            float specularExponent {
                32.0f}; 
        };
 
        using Content = std::variant<Grid>;
 
        // [Public Member Variables]
 
        Content content {Grid {}}; 
    };
 
    using Fill = std::variant<Procedural, std::shared_ptr<Material>>;
 
    struct RadialFade {
 
        // [Public Member Variables]
 
        Color      color {Color::Black()}; 
        math::vec2 center {0.0f, 0.0f}; 
        float startDistance {10.0f}; 
        float endDistance {100.0f}; 
    };
 
    struct HorizonHaze {
 
        // [Public Member Variables]
 
        Color color {}; 
        float angularWidth {
            math::radians(3.0f)}; 
    };
 
    // [Public Member Variables]
 
    Fill                       fill {Procedural {}}; 
    std::optional<RadialFade>  radialFade {}; 
    std::optional<HorizonHaze> horizonHaze {}; 
};
 
} // namespace a3d
 
#endif // AVARA3D_VISUAL_GROUND_H