unity EditorWindow 繪製時間刻度

最終效果圖

繪製時間刻度其實主要靠，Handles類的DrawLine()，Handles類裏還封裝了許多其它的圖形繪製方法，如畫扇形等

知道這個方法就很簡單了

    private void DrawfraemLine(Rect rect)
    {
        Handles.BeginGUI();
        Handles.color = new Color(0,1,0,0.4f);
        float step = 8;
        int Index = 0;
        for (float i = rect.x+2; i < rect.width; i+=step)
        {
            if (Index%5 == 0)
            {
                Handles.DrawLine(new Vector3(i, rect.y + rect.height - 20), new Vector3(i, rect.y + rect.height - 5));
                string str = Index.ToString();
                if (str.Length>2)
                {
                    GUI.Label(new Rect(i - 15, rect.y + 12, 30, 12), str);
                }
                else if(str.Length>1)
                {
                    GUI.Label(new Rect(i - 10, rect.y + 12, 20, 12), str);
                }
                else
                {
                    GUI.Label(new Rect(i - 5, rect.y + 12, 12, 12), str);
                }
                
            }
            else
            {
                Handles.DrawLine(new Vector3(i, rect.y + rect.height - 15), new Vector3(i, rect.y + rect.height - 10));
            }
            Index++;
            
        }
        
        Handles.EndGUI();
    }