透明度在ooxml中存储什么单位? [英] What units is transparency stored in ooxml?

问题描述

我有一个形状单一的pptx文件.将其设置为70％透明我可以比较pptx并看到唯一的区别是在/ppt/slides/slide1.xml

I have a pptx file with a single shape. Setting it to 70% transaprent I can compare the pptx and see the only difference is in /ppt/slides/slide1.xml

 <a:solidFill>
  <a:schemeClr val="accent1">
   <a:alpha val="40000"/>
  </a:schemeClr>
 </a:solidFill>

任何人都不知道地球上的"70％"如何转换为"40000"?

Anyone have any idea how on earth "70%" translates to "40000"?

推荐答案

对我来说似乎有所不同.我的alpha值似乎使用了此功能:

It seems different for me. My alpha values seem to use this function:

y = -1000x + 100000

其中x是百分比，y是Alpha值.我建议您执行相同操作(根据您的计算机设计出功能并进行验证)，不要担心.

Where x is the percentage and y is the alpha value. I recommend you do the same (figure out a function based on your computer and verify them) and not worry about it.

似乎每个单独的百分比单位都对应1000个这些alpha单位.

It seems each single percentage unit corresponds to 1000 of these alpha units.

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