#pragma once
#include "EngineFrame/Base/Actor.h"
#include "EngineFrame/Render/Texture.h"
#include "EngineFrame/Component/Sprite.h"
class Canvas : public Actor
{
    struct ImgKey
    {
        std::string img;
        int index;

        bool operator<(const ImgKey &other) const
        {
            if (img != other.img)
            {
                return img < other.img; // 字符串按字典序比较
            }
            return index < other.index; // 字符串相同则比较index
        }
    };

private:
    /**纹理 */
    RefPtr<Texture> m_texture = nullptr;
    /**大小 */
    VecSize m_size;
    /**FBO */
    GLuint m_fbo = 0;

    /**原始的正交矩阵 */
    glm::mat4 Oom;
    /**原始的视口 */
    SDL_Rect Oviewport;

public:
    Canvas();
    Canvas(VecSize size);
    Canvas(int width, int height);

    /**初始化 */
    void Init(VecSize size);

    /**开始绘制 */
    void BeginDraw();
    /**结束绘制 */
    void EndDraw();
    /**绘制角色 */
    void DrawActor(RefPtr<Actor> actor);
    /**清空画布 */
    void Clear();

    /**重载OnRender函数 */
    void OnRender() override;
};