Three-dimensional carving method based on hand-drawn lines

Abstract

The invention relates to a three-dimensional carving method based on hand-drawn lines. The method comprises the following four steps: 1) drawing a plurality of hand-drawn lines on a three-dimensional model in a user interaction mode, determining the edge points, which a hand-drawn curve passes through, of the surface of the three-dimensional model through curve refining operation, removing triangular surface patches, which the hand-draw curve passes through, of a network model, triangulating the removed part into small triangular surface patches, and inserting the small triangular surface patches into the original network mode; 2) calculating the distance between vertexes on the three-dimensional model and a hand-draw line set; 3) calculating the translation distance and the translation direction of the vertexes of the three-dimensional model according to the width of a carving line selected by the user and an outline function; and 4) according to the translation distance and the translation direction of the vertexes of the three-dimensional model, translating the vertexes on the three-dimensional model to achieve the three-dimensional carving effect of the network model, wherein the distance between the vertexes and the hand-drawn line set does not exceed the width of the given carving line. The three-dimensional carving method based on the hand-drawn lines provided by the invention is simple to operate, efficient and quick and is convenient to carve.

Description

technical field [0001] The invention relates to a three-dimensional mesh model engraving technology based on hand-drawn lines. Background technique [0002] With the continuous development of 3D scanning technology, the triangular mesh model has gradually become a mainstream representation of the shape of 3D objects in the fields of digital entertainment, industrial design, virtual reality and graphics. In order to obtain a highly realistic 3D digital model with rich surface details, it is usually necessary to add detailed textures on the model surface or perform some 3D sculpting operations on the model surface; at the same time, the generation of 3D model surface detail textures enriches the modeling of complex models Content, such as virtual character models in the digital entertainment industry and car models in industrial design, can be branded with three-dimensional geometric texture features in the later stage of modeling to increase their appearance, enhance their ar...

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the shortcomings of complex calculation, time-consuming and parameterization of the 3D model in the existing 3D mesh model surface texture synthesis, the present invention provides a 3D engraving method based on hand-drawn lines that is simple to operate, efficient, fast, and convenient to engrave.

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