﻿<?xml version="1.0" encoding="utf-8" standalone="yes"?><rss version="2.0" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:trackback="http://madskills.com/public/xml/rss/module/trackback/" xmlns:wfw="http://wellformedweb.org/CommentAPI/" xmlns:slash="http://purl.org/rss/1.0/modules/slash/"><channel><title>博客园-Cgwolver-最新评论</title><link>http://www.cnblogs.com/cgwolver/CommentsRSS.aspx</link><description>QQ:419780024</description><language>zh-cn</language><pubDate>Sat, 21 May 2011 01:53:15 GMT</pubDate><lastBuildDate>Sat, 21 May 2011 01:53:15 GMT</lastBuildDate><generator>cnblogs</generator><item><title>Re:GNU autotools 中文版</title><link>http://www.cnblogs.com/cgwolver/archive/2011/06/10/1567207.html#2122269</link><dc:creator>KPTu</dc:creator><author>KPTu</author><pubDate>Fri, 10 Jun 2011 08:18:27 GMT</pubDate><guid>http://www.cnblogs.com/cgwolver/archive/2011/06/10/1567207.html#2122269</guid><description><![CDATA[good share，thanks<br><br><div align=right><a style="text-decoration:none;" href="http://www.cnblogs.com/cgwolver/" target="_blank">KPTu</a> 2011-06-10 16:18 <a href="http://www.cnblogs.com/cgwolver/archive/2011/06/10/1567207.html#2122269#Feedback" target="_blank" style="text-decoration:none;">发表评论</a></div>]]></description></item><item><title>Re:SwapBuffers的效率问题</title><link>http://www.cnblogs.com/cgwolver/archive/2011/05/27/1427317.html#2108348</link><dc:creator>legion</dc:creator><author>legion</author><pubDate>Fri, 27 May 2011 08:49:31 GMT</pubDate><guid>http://www.cnblogs.com/cgwolver/archive/2011/05/27/1427317.html#2108348</guid><description><![CDATA[偶然发现这里，，特地注册关注，，<br><br><div align=right><a style="text-decoration:none;" href="http://www.cnblogs.com/cgwolver/" target="_blank">legion</a> 2011-05-27 16:49 <a href="http://www.cnblogs.com/cgwolver/archive/2011/05/27/1427317.html#2108348#Feedback" target="_blank" style="text-decoration:none;">发表评论</a></div>]]></description></item><item><title>Re:Hook Function</title><link>http://www.cnblogs.com/cgwolver/archive/2011/03/08/1345665.html#2041869</link><dc:creator>wangfengmsdn</dc:creator><author>wangfengmsdn</author><pubDate>Tue, 08 Mar 2011 15:22:36 GMT</pubDate><guid>http://www.cnblogs.com/cgwolver/archive/2011/03/08/1345665.html#2041869</guid><description><![CDATA[我顶了，哈哈哈
中国KINECT论坛 [url=http://www.cnkinect.com/]http://www.cnkinect.com/[/url]<br><br><div align=right><a style="text-decoration:none;" href="http://www.cnblogs.com/cgwolver/" target="_blank">wangfengmsdn</a> 2011-03-08 23:22 <a href="http://www.cnblogs.com/cgwolver/archive/2011/03/08/1345665.html#2041869#Feedback" target="_blank" style="text-decoration:none;">发表评论</a></div>]]></description></item><item><title>Re:ms opengl 1.1 source download</title><link>http://www.cnblogs.com/cgwolver/archive/2010/11/13/1370425.html#1959695</link><dc:creator>wl_99888</dc:creator><author>wl_99888</author><pubDate>Sat, 13 Nov 2010 06:10:27 GMT</pubDate><guid>http://www.cnblogs.com/cgwolver/archive/2010/11/13/1370425.html#1959695</guid><description><![CDATA[bjtuwanglei@gmail.com
博主给的enginedev.net进不去了,可否发至我邮箱,谢谢.<br><br><div align=right><a style="text-decoration:none;" href="http://www.cnblogs.com/cgwolver/" target="_blank">wl_99888</a> 2010-11-13 14:10 <a href="http://www.cnblogs.com/cgwolver/archive/2010/11/13/1370425.html#1959695#Feedback" target="_blank" style="text-decoration:none;">发表评论</a></div>]]></description></item><item><title>Re:SwapBuffers的效率问题</title><link>http://www.cnblogs.com/cgwolver/archive/2010/11/03/1427317.html#1950496</link><dc:creator>binrice</dc:creator><author>binrice</author><pubDate>Wed, 03 Nov 2010 07:32:50 GMT</pubDate><guid>http://www.cnblogs.com/cgwolver/archive/2010/11/03/1427317.html#1950496</guid><description><![CDATA[可能会对效率有些影响，但是应该不是你分析的那样。你统计此函数的效率时，并未关闭垂直同步，因此无论你怎么测试，都会在１３ｍｓ上下，这由你显示器的刷新率决定的。此函数调用应该在不超过１ｕｓ秒的。<br><br><div align=right><a style="text-decoration:none;" href="http://www.cnblogs.com/cgwolver/" target="_blank">binrice</a> 2010-11-03 15:32 <a href="http://www.cnblogs.com/cgwolver/archive/2010/11/03/1427317.html#1950496#Feedback" target="_blank" style="text-decoration:none;">发表评论</a></div>]]></description></item><item><title>Re:如何判断一点在三角形内</title><link>http://www.cnblogs.com/cgwolver/archive/2010/10/13/1257611.html#1933876</link><dc:creator>cgwolver</dc:creator><author>cgwolver</author><pubDate>Wed, 13 Oct 2010 08:08:34 GMT</pubDate><guid>http://www.cnblogs.com/cgwolver/archive/2010/10/13/1257611.html#1933876</guid><description><![CDATA[呵呵，多谢大家关注和指正，本文是群友讨论记录，有疏漏指出，请多指正！欢迎大家加入 63708310 讨论3d引擎技术。<br><br><div align=right><a style="text-decoration:none;" href="http://www.cnblogs.com/cgwolver/" target="_blank">cgwolver</a> 2010-10-13 16:08 <a href="http://www.cnblogs.com/cgwolver/archive/2010/10/13/1257611.html#1933876#Feedback" target="_blank" style="text-decoration:none;">发表评论</a></div>]]></description></item><item><title>Re:如何判断一点在三角形内</title><link>http://www.cnblogs.com/cgwolver/archive/2010/07/06/1257611.html#1864510</link><dc:creator>neko</dc:creator><author>neko</author><pubDate>Mon, 05 Jul 2010 17:51:06 GMT</pubDate><guid>http://www.cnblogs.com/cgwolver/archive/2010/07/06/1257611.html#1864510</guid><description><![CDATA[我傻得拿这文章去写程序,  一写发觉非常无语.
面积 归一 和平面 3种算法均有错. 
而且本来平面法是最高效率的.

)1  引用&quot; if( P.DotProduct( N ) + D &gt; 0 ) return false; 

这个应该是 Dot(P,N) - D == 0 吧 



)2  引用&quot; n[0] = N.CrossProduct(AB); //朝向内侧 

ABC 顺序符合右手定则的情况下 程序计算后这个得出来是外侧! 


)3  引用&quot;  S(ABC) = AB.CrossProduct(AC)；//*0.5; 

这样算是错的 

应该是 S_ABC = |Coss(AB,AC)| 绝对值不能少 
也就是 S_ABC = Coss(AB,AC).Length(); //C# 

这样算程序才得出正确结果. 


我修改该文的逻辑并编写了代码 通过Matrix 变换 和不同的输入点测试了各种情况   结果正确


经过 循环测试   使用平面的方法效率是最高的 平面方法中不需要归一处理
因为只需要判断是否大于0   归一计算是可以省略或避免的。


<br><br><div align=right><a style="text-decoration:none;" href="http://www.cnblogs.com/cgwolver/" target="_blank">neko</a> 2010-07-06 01:51 <a href="http://www.cnblogs.com/cgwolver/archive/2010/07/06/1257611.html#1864510#Feedback" target="_blank" style="text-decoration:none;">发表评论</a></div>]]></description></item><item><title>Re:ms opengl 1.1 source download</title><link>http://www.cnblogs.com/cgwolver/archive/2010/03/24/1370425.html#1786389</link><dc:creator>Swift</dc:creator><author>Swift</author><pubDate>Wed, 24 Mar 2010 10:22:47 GMT</pubDate><guid>http://www.cnblogs.com/cgwolver/archive/2010/03/24/1370425.html#1786389</guid><description><![CDATA[有人有代码吗？有的话传我一份，不胜感激~~~~<br><br><div align=right><a style="text-decoration:none;" href="http://www.cnblogs.com/cgwolver/" target="_blank">Swift</a> 2010-03-24 18:22 <a href="http://www.cnblogs.com/cgwolver/archive/2010/03/24/1370425.html#1786389#Feedback" target="_blank" style="text-decoration:none;">发表评论</a></div>]]></description></item><item><title>Re:ms opengl 1.1 source download</title><link>http://www.cnblogs.com/cgwolver/archive/2009/11/21/1370425.html#1703895</link><dc:creator>cgwolver</dc:creator><author>cgwolver</author><pubDate>Sat, 21 Nov 2009 15:01:45 GMT</pubDate><guid>http://www.cnblogs.com/cgwolver/archive/2009/11/21/1370425.html#1703895</guid><description><![CDATA[终于弄出wingdip.h来了
[url=点此下载wingdip.h]http://files.cnblogs.com/cgwolver/wingdip.h.rar[/url]<br><br><div align=right><a style="text-decoration:none;" href="http://www.cnblogs.com/cgwolver/" target="_blank">cgwolver</a> 2009-11-21 23:01 <a href="http://www.cnblogs.com/cgwolver/archive/2009/11/21/1370425.html#1703895#Feedback" target="_blank" style="text-decoration:none;">发表评论</a></div>]]></description></item><item><title>Re:ms opengl 1.1 source download</title><link>http://www.cnblogs.com/cgwolver/archive/2009/11/21/1370425.html#1703816</link><dc:creator>cgwolver</dc:creator><author>cgwolver</author><pubDate>Sat, 21 Nov 2009 10:36:17 GMT</pubDate><guid>http://www.cnblogs.com/cgwolver/archive/2009/11/21/1370425.html#1703816</guid><description><![CDATA[wingdip.h是make的时候产生的文件，来自于 wingdi.w<br><br><div align=right><a style="text-decoration:none;" href="http://www.cnblogs.com/cgwolver/" target="_blank">cgwolver</a> 2009-11-21 18:36 <a href="http://www.cnblogs.com/cgwolver/archive/2009/11/21/1370425.html#1703816#Feedback" target="_blank" style="text-decoration:none;">发表评论</a></div>]]></description></item></channel></rss>
