Also make sure the surface normals are pointing outwards 也確定表面的法線指向外面。
Computation of surface normal vector in virtual endoscope system 虛擬內(nèi)窺鏡系統(tǒng)中表面法向量的計算
For this reason , the expression values are also passed though a bump map to perturb the surface normals 因為這個原因,表達式數(shù)值也能傳遞給一個凹凸貼圖,去擾亂表面法線。
An easy way to achieve this effect is to make use of two pieces of information in maya : the camera ' s view direction and the surface normal at the point being shaded ; both are vectors 在這個電子顯微鏡的顏色效果后面的概念是在表面上的任何點是直接面向攝像機時渲染時將渲染成黑色。
( 2 ) after discussing all kinds of the existing algorithms , this paper presents a new kind of adaptive slicing algorithm by comprehensively considering the surface normal and the cross - section area ( 2 )提出一種綜合考慮法線與面積的自適應(yīng)分層算法,并針對同一模型對自適應(yīng)分層和等厚分層的誤差分布作了比較。