at the most basic level, it is an xml language for describing vector graphics -- pictures made by drawing lines (as opposed to bitmap graphics -- pictures made by drawing pixels).
在最基本的层次上,它是一种用于描述矢量图的xml语言。矢量图是由绘图线条构成的图形,与位图图形相对,后者是由绘图像素构成的图形。
this process is similar to how bitmap graphics are built using the imagemagick library within php.
此过程类似于使用php中的imagemagick库来构建位图。
the bitmaps i'll refer to in this tutorial are windows bitmap graphics files.
我将在本课中涉及的就是位图文件。