Tanker vector and method of vertices. Vector: How to represent how the apex is fused into the surrounding surface. Tangential vector and method of the vertex: Set m is a transformation matrix of 4 * 4, discussed in the following cases: 1) If m represents a translational transformation, the tangent vector and the normal vector are constant: t ' = T; n '= n. 2) If m represents an orthogonal matrix, the tangent vectors and the normal vector also satisfy the m conversion: t '= mt; n' = mn. 2) If m represents a non-orthogonal matrix, the tangent vector satisfies M transform: T '= MT, but the normal vector does not satisfy the M transform. Setting the transformation matrix required for the change method is g, then g = trans (INVERSE (M)); -------------------------- --- Committed to multimedia technology, becoming a thoughtful software engineer ------------------------ This article is my original creation, if you want to reprint, please Contact your own, or indicate it. Welcome everyone to make valuable comments on the content of the article, and I hope that everyone will point out the mistakes in the text, so I can correct it in time. My contact: QQ: 7578420email: jerrydong@tom.com ------------------------------------- -------------------------------------------------- -
