目錄索引

本系列與知乎同名翻譯同步更新，原文鏈接：https://zhuanlan.zhihu.com/p/645917290

如有任何翻譯錯(cuò)誤，歡迎在評(píng)論區(qū)踹我:)！

原文對(duì)照

Let's imagine that we have a blank sheet of paper, and we ask a friend to draw on the front face of the sheet. How could we determine which is the front face of a blank sheet if both sides are equal? This is why?normals?exist. A normal corresponds to a perpendicular vector on the surface of a polygon which is used to determine the direction or orientation of a face or vertex.

In Maya, we can visualize the normals of an object by selecting the property?vertex normals. It allows us to see where a vertex points in space and determines the hardness level between the different faces of an object.

譯文

假設(shè)我們面前有一張白紙，現(xiàn)在請(qǐng)一位朋友在白紙的正面畫畫。如果白紙的兩面都完全一樣，我們要如何區(qū)分白紙的“正面”和“反面”呢？這就是法線（normal）存在的原因。法線對(duì)應(yīng)垂直于多邊形表面上的向量，用于確定面或頂點(diǎn)的方向或方位。

在 Maya 中，我們可以通過(guò)選擇屬性 "頂點(diǎn)法線（vertex normal）"來(lái)可視化模型的法線。通過(guò)這個(gè)功能，我們可以看到頂點(diǎn)在空間中的指向，并確定模型不同面之間的硬度級(jí)別。