August 2017
Intermediate to advanced
360 pages
8h 35m
Chinese
Content preview from 算法技术手册（原书第2 版）
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计算几何
｜
247
计算几何
remove segments in state between left and right
advance state sweep point down to ep
if new segments start at ep then
❹
insert new segments into state
update = true
if intersections associated with ep then
❺
insert intersections into state
update = true
if update then
updateQueue (EQ, left, left successor)
updateQueue (EQ, right, right predecessor)
else
updateQueue (EQ, left, right)
end
updateQueue (EQ, A, B)
❻
if neighboring A and B segments intersect below sweep point then
insert their intersection point into EQ
end
❶
初始化事件队列
2*
n
个点。
❷
每个事件点都表示一段线段（上或下端点）。
❸
相邻线段之间
出现的交点。
❹
在扫描线下方发现新线段时，维护其状态。
❺
处于交点位置时，相邻的线段交换相对位置。 ...
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.