// Рисование круга(для толщины линии)
void draw_Circle(struct Png *image, int x0, int y0, int line_fat, int width_pixel, int Red,
                 int
                 Green,
                 int Blue) {
    int x = 0;
    int radius = line_fat / 2;
    int y = radius;
    int start = y0 - radius;
    int end = y0 + radius;
    int delta = 1 - 2 * radius;
    int error;
    while (y >= 0) {
        paint_pixel(image, x0 + x, y0 + y, width_pixel, Red, Green, Blue);

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

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

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

        error = 2 * (delta + y) - 1;
        while (start <= y0) {
            for (int i = abs(x - x0); i < (x + x0); i++) {
                paint_pixel(image, i, start, width_pixel, Red, Green, Blue);

                paint_pixel(image, i, end, width_pixel, Red, Green, Blue);
            }
            if (error > 0) {
                start++;
                end--;
            }
            break;
        }
        if (delta < 0 && error <= 0) {
            ++x;
            delta += 2 * x + 1;
            continue;
        }
        error = 2 * (delta - x) - 1;
        if (delta > 0 && error > 0) {
            --y;
            delta += 1 - 2 * y;
            continue;
        }
        ++x;
        delta += 2 * (x - y);
        --y;
    }
}

void paint_line(struct Png *image, int width_pixel, int x0, int y0, int x1, int y1, int line_fat,
                int Red, int Green, int Blue) {
    int A, B, sign;
    A = y1 - y0;
    B = x0 - x1;
    if (abs(A) > abs(B)) sign = 1;
    else sign = -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_pixel, Red, Green, Blue);
    draw_Circle(image, x0, y0, line_fat, width_pixel, Red, Green, Blue);
    int x = x0, y = y0;
    if (sign == -1) {
        do {
            f += A * signa;
            if (f > 0) {
                f -= B * signb;
                y += signa;
            }
            x -= signb;
            paint_pixel(image, x, y, width_pixel, Red, Green, Blue);
            draw_Circle(image, x, y, line_fat, width_pixel, 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_pixel, Red, Green, Blue);
            draw_Circle(image, x, y, line_fat, width_pixel, Red, Green, Blue);
        } while (x != x1 || y != y1);
    }
}