for(int w = 0; w < json_array_size(points); ++w){
            json_t * jpoints = json_array_get(points, w);
        int px = json_number_value(json_object_get(jdados, "jpoints"));
        int py = json_number_value(json_object_get(jdados, "jpoints"));
        cairo_line_to (cr, x, y)


        }
        break;