}//*/
    public void DrawGuideLine(Graphics g, PlayingData pd)
    {
        Pen borderlinedrawer = new Pen(Color.White, 0.5f);

        for (int i = 0; i < pd.hsnapcnt; i++)//Horizontal guideline
        {
            int x = this.Width * (i + 1) / ((int)pd.hsnapcnt + 1);
            g.DrawLine(borderlinedrawer, x, 0, x, this.Height);
        }//Horizontal guideline

        int    beat = ((int)(pd.now * 48 / pd.bsnapcnt)) * pd.bsnapcnt;
        double l    = beat / 48d;

        while (beat < 0)
        {
            beat += 48;
        }
        for (; l < pd.now + pd.scale; l += 1d / 48d)
        {
            Pen linedrawer;
            beat %= 48;//detect beat
            if (beat % (48 / pd.bsnapcnt) != 0)
            {
                beat++;
                continue;
            }

            if (beat == 0 && ((l + 12.1) % 4) < 0.4)//thick line every large beat(4 small beat)
            {
                linedrawer = new Pen(Editor.BeatSnapColor.col[beat], 3);
            }
            else
            {
                linedrawer = new Pen(Editor.BeatSnapColor.col[beat], 1);
            }
            int y = MusicMath.TimingToY(l, pd);
            g.DrawLine(linedrawer, 0, y, pd.width, y);
            beat++;
        }//vertical(beat)guideline
    }