球与球碰撞
我阅读了页面球与球碰撞 - 检测和处理并且我对resolve_collision 的代码有点困惑。我得到了一切，除了 1.0f + Constants.restitution 是什么？什么是 1.0f，什么是 Constants.restitution？
I read the page Ball to Ball Collision - Detection and Handling and am a bit confused about the code for resolve_collision. I get everything except what is 1.0f + Constants.restitution? What is 1.0f and what is Constants.restitution?
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1.0f是浮点1.0的文字。在 Java 中，1.0默认为double类型，因此作者通过添加f显式使其成为float> 之后标记。Constants.restitution据称代表恢复系数，通常是物理学中的e或Cr。这定义了球撞击地板或另一个球后的弹跳程度。尽管他没有在他提供的代码中显示它，但它可能在某处声明为The
1.0fis the literal for a floating point1.0. In Java,1.0will default to typedouble, so the author is explicitly making it afloatby adding thefflag afterwards.Constants.restitutionsupposedly represents the coefficient of restitution, which is usually an e or Cr in physics. This defines how much a ball bounces once it hits the floor or another ball. Though he doesn't show it in the code he provided, it is probably declared somewhere as恢复系数是 0 到 1 之间的数字，表示碰撞时的弹性大小。 0 表示接触的物体将粘在一起，1 表示它们将以完全弹性的方式弹开（恢复所有速度）。
尝试谷歌搜索恢复系数，其余的就会随之而来。
The coefficient of restitution is a number between 0 and 1 that indicates the amount of elasticity in the collision. A 0 means the contacting bodies will stick together, and a 1 means they will bounce off in a perfectly elastic fashion (recovering all their speed).
Try Googling coefficient of restitution and the rest will follow.