nForce Media and Communications Processor Nforce 媒体和通信处理器 normal tangent 法向切线 Northbridge/southbridge chipset architecture 北桥/南桥芯片集架构 ..
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normal tangent conic equivalent projection 正轴等面积切圆锥投影
normal tangent cylindrical equivalent projection 正轴等面积切圆柱投影
tangent and normal 切线和法线
normal and tangent propagation speed 法向和切向传播速度
Tangent and Normal line 切线和法线
tangent vector & normal vector 切向量与法向量
OK, and that's going to be the normal vector to the surface or to the tangent plane.
这就是切平面的，或者说这个曲面的法向量。
If the two level curves are tangent to each other that means they have the same tangent line. That means that the normal vectors should be parallel. Let me maybe draw a picture here.
如果两个等高线相切，说明它们的切线相同，也就是说他们的法向量应该平行，我再在这里画个图。
Our normal maps are different from those in most games, and easier to understand and work with, because they're stored in object-space instead of tangent-space. Maybe I'll write about that next time!
我们的法线贴图和其他很多游戏不一样，更容易理解也更容易使用，它是存储与对象空间而不是切线空间，也许下回有机会可以介绍一下。
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