I will also note that this is my first polygon object to create.

我也注意到，这是我第一次多边形对象创建。

youdao

For example, object bounding boxes may first be tested to see if polygon based testing is necessary - or bounding box intersection may often be all that is needed to provide acceptable results.

例如，首先可能要测试物体碰撞盒子，看是否需要基于测试的多边形，或者碰撞盒子交叉点可能经常成为提供满意结果的唯一来源。

youdao

Each new polygon is a new object that is represented by a row in the attribute table.

每一个新的几何图形是由列表示在属性表格中的一个新对象。

youdao