从值显示 EQ 图像的更有效代码

Posted 2023-02-25

【中文标题】从值显示 EQ 图像的更有效代码

【英文标题】：More efficient code for displaying EQ images from value

【发布时间】：2016-04-17 11:00:50

【问题描述】：

基本上我正在做的是使用 NAudio 来获取峰值信息。我制作了一组 20 张图像来代表 EQ。我已经做了一些代码来检查峰值并使用计时器实时更改图片框中的图像。尽管有时我会看到视觉滞后，并且我认为代码效率很低。有没有比这一大块 ifs 更高效的代码

private void EQ_TIMER_Tick(object sender, EventArgs e)
    
        int vol = (int)((float)(device.AudioMeterInformation.MasterPeakValue * 100));
        if ((vol > 0) && (vol < 5))
        
            WINGS_FRAME.Image = Properties.Resources.RES_EQ5;
        
        else if ((vol > 5) && (vol < 10))
        
            WINGS_FRAME.Image = Properties.Resources.RES_EQ10;
        
        else if ((vol > 10) && (vol < 15))
        
            WINGS_FRAME.Image = Properties.Resources.RES_EQ15;
        
        else if ((vol > 15) && (vol < 20))
        
            WINGS_FRAME.Image = Properties.Resources.RES_EQ20;
        
        else if ((vol > 20) && (vol < 25))
        
            WINGS_FRAME.Image = Properties.Resources.RES_EQ25;
        
        else if ((vol > 25) && (vol < 30))
        
            WINGS_FRAME.Image = Properties.Resources.RES_EQ30;
        
        else if ((vol > 30) && (vol < 35))
        
            WINGS_FRAME.Image = Properties.Resources.RES_EQ35;
        
        else if ((vol > 35) && (vol < 40))
        
            WINGS_FRAME.Image = Properties.Resources.RES_EQ40;
        
        else if ((vol > 40) && (vol < 45))
        
            WINGS_FRAME.Image = Properties.Resources.RES_EQ45;
        
        else if ((vol > 45) && (vol < 50))
        
            WINGS_FRAME.Image = Properties.Resources.RES_EQ50;
        
        else if ((vol > 50) && (vol < 55))
        
            WINGS_FRAME.Image = Properties.Resources.RES_EQ55;
        
        else if ((vol > 55) && (vol < 60))
        
            WINGS_FRAME.Image = Properties.Resources.RES_EQ60;
        
        else if ((vol > 60) && (vol < 65))
        
            WINGS_FRAME.Image = Properties.Resources.RES_EQ65;
        
        else if ((vol > 65) && (vol < 70))
        
            WINGS_FRAME.Image = Properties.Resources.RES_EQ70;
        
        else if ((vol > 70) && (vol < 75))
        
            WINGS_FRAME.Image = Properties.Resources.RES_EQ75;
        
        else if ((vol > 75) && (vol < 80))
        
            WINGS_FRAME.Image = Properties.Resources.RES_EQ80;
        
        else if ((vol > 80) && (vol < 85))
        
            WINGS_FRAME.Image = Properties.Resources.RES_EQ85;
        
        else if ((vol > 85) && (vol < 90))
        
            WINGS_FRAME.Image = Properties.Resources.RES_EQ90;
        
        else if ((vol > 90) && (vol < 95))
        
            WINGS_FRAME.Image = Properties.Resources.RES_EQ95;
        
        else if ((vol > 95) && (vol < 100))
        
            WINGS_FRAME.Image = Properties.Resources.RES_EQ100;
        
        else if (vol == 0)
        
            WINGS_FRAME.Image = null;
        
    

【参考方案1】：

试试这样的：

int vol = 38;
int imgnum = vol/5*5;
string imgname = string.Format("RES_EQ0", imgnum);

var image = Properties.Resources.ResourceManager.GetObject(imgname);

整数除法将体积“四舍五入”为步数，然后乘以 5 得到图像的实际数字。

【讨论】：

太完美了！效果更好！