百分之十六进制颜色值 [英] percent to hex color value

问题描述

我可能做这个硬盘的方式，有啥从百分比转换为包含RGB的十六进制值的一部分字符串最干净的方法？

I'm probably doing this the hard way, so what's the cleanest way to convert from a percentage to a string containing one part of an RGB hex value?

这是我有：

//dealing with small percentages, need to magnify the color differences.
double increaseVisibilityFactor = 5;     

double percent = someDouble / someOtherDouble;
double redLightenAmount = 1 - (percent * increaseVisibilityFactor);
if (percent > 0 && redLightenAmount < 0) { redLightenAmount = 0; } //overflow

int increaseWhiteBy = (int)(redLightenAmount * 0xFF);

string hexColor = increaseWhiteBy.ToString("X");
if (hexColor.Length < 2) { hexColor = "0" + hexColor; }
hexColor = "FF" + hexColor + hexColor;

以上一些线路可以明显地结合（即转换为int，然后串），但我不知道是否有整体的缺陷或这样做的更好的办法？

Some of the above lines could obviously be combined (i.e. conversion to int and then string) but I'm wondering if there are overall flaws or a better way of doing this?

推荐答案

是的，可以做的更简单：

Yes, that can be done easier:

  string hexcolor = string.Format("FF{0:X2}{0:X2}", increaseWhiteBy);

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