1. The app calculates the rect by multiplying the column and row position by the size of each chip.
这个计算通过行和列的位置和每个块的大小来得到矩形区域。
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2. 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.
3. And the way area can be calculated for rect obj is.
然后我们就可以这样调用计算它的面积了。
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4. 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。
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5. 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。
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6. I offset the values of the row and column by one to calculate the lower right portion of the rect.
用计算偏移行和列的数值使得矩形区域的右下角。
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7. The paint structure contains a rect data structure that has the smallest rectangle that completely encloses the update region and a flag that specifies whether the background has been erased.
