For example, the code in Listing 1 draws a square using the rect function, then specifies a change to the coordinate system using translate.

例如，清单1所示代码使用rect函数绘制了一个正方形，然后使用translate修改坐标系统。

youdao

The rect function draws a rectangle, with the first two points defining the location and the next two defining width and height, respectively.

rect函数可绘制一个矩形，并且前两个点定义位置，而后面两个点则分别定义宽度和高度。

youdao

Any new shapes drawn after the translate function appears using the offset; so in this case, the rect function actually creates a square at 100, 100, 150, 150, as shown in Figure 1, cell a.

translate函数之后绘制的任何形状都会加上这个偏移量；所以在这里，rect函数实际上在坐标100,100,150,150上创建一个正方形，如图1的单元格a所示。

youdao