lighttroupe/luz

module DrawingLines
    $line_width_stack ||= []
    def with_line_width(width)
        GL.LineWidth(width)
            $line_width_stack.push(width)
            yield
            $line_width_stack.pop
        GL.LineWidth($line_width_stack.last || 1.0)
    end

    def draw_line(x1,y1,x2,y2)
        GL.Begin(GL::LINES)
            GL.Vertex(x1,y1)
            GL.Vertex(x2,y2)
        GL.End
    end
end