sky.h

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// SPDX-License-Identifier: Apache-2.0
// Copyright 2025-2026 Arnis Lektauers
//
// Created by Arnis Lektauers on 09.10.2025.
//
#pragma once
 
#include <memory>
 
#include "core/math/vector3.h"
#include "scene/constants.h"
#include "scene/graphNode.h"
#include "skyMesh.h"
 
namespace visutwin::canvas
{
    class GraphicsDevice;
    class Scene;
    class Texture;

    class Sky
    {
    public:
        Sky(const std::shared_ptr<GraphicsDevice>& device, Scene* scene);
        ~Sky();
 
        void updateSkyMesh();
        void resetSkyMesh();
        SkyMesh* skyMesh();
 
        void setType(int value);
        int type() const { return _type; }
 
        void setDepthWrite(bool value);
        bool depthWrite() const { return _depthWrite; }

        void setCenter(const Vector3& value) { _center = value; }
        const Vector3& center() const { return _center; }

        Vector3 centerWorldPos() const;
 
        GraphNode* node() { return &_node; }

        Texture* atmosphereDummyTexture() const { return _atmosphereDummyTexture.get(); }
 
    private:
        std::shared_ptr<GraphicsDevice> _device;
        Scene* _scene = nullptr;
        int _type = SKYTYPE_INFINITE;
        bool _depthWrite = false;
        Vector3 _center = Vector3(0.0f, 1.0f, 0.0f);
        GraphNode _node = GraphNode("SkyMeshNode");
        std::unique_ptr<SkyMesh> _skyMesh;
        std::shared_ptr<Texture> _atmosphereDummyTexture; // 1×1 placeholder for atmosphere-only sky
    };
}