PaintingTool.hpp

#pragma once
 
#include "resources/Texture.hpp"
#include "resources/Mesh.hpp"
 
#include "Common.hpp"
 
class PaintingTool {
 
public:
    PaintingTool(unsigned int width, unsigned int height);
 
    void draw();
 
    void update();
 
    void resize(uint width, uint height);
 
    ~PaintingTool();
    
    const Texture * texture() const { return &_canvas; }
 
    const Texture * visuId() const { return &_visu; }
 
private:
    enum class Mode : int {
        DRAW = 0,
        ERASE
    };
 
    enum class Shape : int {
        CIRCLE = 0,
        SQUARE,
        DIAMOND,
        COUNT
    };
 
    Texture _canvas; 
    Texture _visu;   
 
    Program * _brushShader; 
    std::vector<Mesh> _brushes;   
 
    glm::vec3 _bgColor = glm::vec3(0.0f); 
    glm::vec3 _fgColor = glm::vec3(1.0f); 
    glm::vec2 _drawPos = glm::vec2(0.0f); 
    int _radius        = 40;              
    Mode _mode         = Mode::DRAW;      
    Shape _shape       = Shape::CIRCLE;   
    bool _shouldClear   = true;           
    bool _shouldDraw   = false;           
 
    GPUAsyncTask _readbackTask = 0;       
};