// Рисование круга(для толщины линии)
void draw_Circle(struct Png *image, int x0, int y0, int line_fat, int width_pix, int Red,
                 int
                 Green,
                 int Blue) {
    int x = 0;
    int rad = line_fat / 2;
    int y = rad;
    int start0 = y0 - rad;
    int end1 = y0 + rad;
    int phi = 1 - 2 * rad;
    int err;
    while (y >= 0) {
        paint_pixel(image, x0 + x, y0 + y, width_pix, Red, Green, Blue);

        paint_pixel(image, x0 + x, y0 - y, width_pix, Red, Green, Blue);

        paint_pixel(image, x0 - x, y0 + y, width_pix, Red, Green, Blue);

        paint_pixel(image, x0 - x, y0 - y, width_pix, Red, Green, Blue);

        err = 2 * (phi + y) - 1;
        while (start0 <= y0) {
            for (int i = abs(x - x0); i < (x + x0); i++) {
                paint_pixel(image, i, start0, width_pix, Red, Green, Blue);

                paint_pixel(image, i, end1, width_pix, Red, Green, Blue);
            }
            if (err > 0) {
                start0++;
                end1--;
            }
            break;
        }
        if (phi < 0 && err <= 0) {
            ++x;
            phi += 2 * x + 1;
            continue;
        }
        err = 2 * (phi - x) - 1;
        if (phi > 0 && err > 0) {
            --y;
            phi += 1 - 2 * y;
            continue;
        }
        ++x;
        phi += 2 * (x - y);
        --y;
    }
}

void paint_line(struct Png *image, int width_pix, int x0, int y0, int x1, int y1, int line_fat,
                int Red, int Green, int Blue) {
    int A, B, sign1;
    A = y1 - y0;
    B = x0 - x1;
    if (abs(A) > abs(B)) sign1 = 1;
    else sign1 = -1;
    int signA, signB;
    if (A < 0) signA = -1;
    else signA = 1;
    if (B < 0) signB = -1;
    else signB = 1;
    int f = 0;

    paint_pixel(image, x0, y0, width_pix, Red, Green, Blue);
    draw_Circle(image, x0, y0, line_fat, width_pix, Red, Green, Blue);
    int x = x0, y = y0;
    if (sign1 == -1) {
        do {
            f += A * signA;
            if (f > 0) {
                f -= B * signB;
                y += signA;
            }
            x -= signB;
            paint_pixel(image, x, y, width_pix, Red, Green, Blue);
            draw_Circle(image, x, y, line_fat, width_pix, Red, Green, Blue);
        } while (x != x1 || y != y1);
    } else {
        do {
            f += B * signB;
            if (f > 0) {
                f -= A * signA;
                x -= signB;
            }
            y += signA;
            paint_pixel(image, x, y, width_pix, Red, Green, Blue);
            draw_Circle(image, x, y, line_fat, width_pix, Red, Green, Blue);
        } while (x != x1 || y != y1);
    }
}