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change 三维思考
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exampleSite/content/post/三维方向的思考/index.zh-cn.md
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author = "Wxn"
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title = "三维方向的思考"
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date = "2023-11-05"
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description = "Please read me first."
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tags = [
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"三维方向的思考",
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]
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categories = [
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"个人随笔",
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]
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This article offers a sample of basic Markdown.
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<!--more-->
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# 正文开始
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## OpenGL
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着色器与纹理贴图
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## 一道题
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如何判断一个点(x,y)在一个多边形的内部,外部,还是边上?
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我们先来看看国外教授的看法:https://alienryderflex.com/polygon/
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这种情况有点特殊,而且如果遇到了也不知道如何解决.所以我找找看有没有更简单的办法
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----
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下面这个同学讲的很好,使用叉乘!
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博客:【如何判断点在多边形内部 - CSDN App】http://t.csdnimg.cn/JMdc7
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视频:[教学视频](https://www.bilibili.com/video/BV1FD4y1i7Dy/?share_source=copy_web&vd_source=9a022d27a757e495adc6e15743c4ec1d)
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==下面来讲一下叉乘==
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