#pragma once
#include "rtt.h"
#include "texture.h"
#include "shader.h"
#include "shape.h"
#include "brush.h"

NS_START

class Canvas
{
    Stroke* m_current_stroke = nullptr;
    Plane m_plane;
    BrushMesh m_mesh;
    int m_current_layer_idx = 0;
public:
    int m_width;
    int m_height;
    bool m_use_instanced = false;
    bool m_show_tmp = false;
    std::vector<Layer> m_layers;
    std::vector<Stroke> m_strokes;
    RTT m_tmp;
    RTT m_fb;
    Texture2D m_tex;
    Sampler m_sampler;
    Sampler m_sampler_bg;

    bool create(int width, int height);
    void resize(int width, int height);
    void layer_add(std::string name);
    void stroke_start(glm::vec2 point, float pressure, const ui::Brush& brush);
    void stroke_update(glm::vec2 point, float pressure);
    void stroke_draw();
    void stroke_end();
    void stroke_commit();
    void clear();
};

NS_END