bresenham-0.rs/src/painter.hpp

#pragma once

#include "frame.hpp"

class PainterState {
public:
    float angle = 0;
    struct {
        unsigned short x = -1, y = -1;
    } clicked_pixel;

    PainterState() = default;

    void set_clicked_pixel(unsigned short x, unsigned short y) {
        this->clicked_pixel.x = x;
        this->clicked_pixel.y = y;
    }
};

class Painter {
public:
    virtual void draw(PainterState *state, Frame *frame) const = 0;
};

extern Painter const *const predefined_painters[];


class PixelGridPainter : public Painter {
private:
    const COLOR c1;
    const COLOR c2;
public:
    inline PixelGridPainter(COLOR c1, COLOR c2) : c1{c1}, c2{c2} {}

    inline void draw(PainterState *state, Frame *frame) const override {
        for (int y = 0; y < frame->height; y++) {
            for (int x = 0; x < frame->width; x++) {
                if ((x + y) % 2 == 0)
                    frame->set_pixel(x, y, this->c1);
                else
                    frame->set_pixel(x, y, this->c2);
            }
        }
    }
};