PLT file-based three-dimensional display method for advertising character

Abstract

The invention provides a method for generating a three-dimensional model of an advertising character. The method is characterized by executing the following steps: step A: reading and analyzing an appointed plt file; and connecting points contained in the separated parts of the advertising character by line segments so as to obtain a plurality of closed polygonal graphics contained in the advertising character; step B: analyzing mutual positions and nesting relations among the plurality of closed polygonal graphics so as to obtain the relation between each closed polygonal graphic and the entity part of the advertising character; and generating a filling surface of the advertising character; step C: dividing a grid in a surface domain to be filled; dividing the surface of the advertising character into triangular grids; and displaying the triangular grids; and step D: stretching the surface of the advertising character along a vertical direction to construct the periphery of the advertising character so as to establish a three-dimensional entity model; and respectively calculating a normal vector coordinate and a texture coordinate of each vertex for three-dimensionally displaying a texture mapping and starting an illumination function.

Description

technical field [0001] The invention relates to a three-dimensional display method of advertisement characters based on a plt file, which belongs to the technical field of advertisement letter processing and computer visualization, and provides a more realistic three-dimensional display method for advertisement letter processing. Background technique [0002] The application range of advertising characters is extremely wide. In order to identify its name, a building will make a three-dimensional name and hang it on the building. Commercial places use a variety of advertising characters as signboards. Generally speaking, the advertising lettering process is divided into two types: metal lettering and plastic lettering. Compared with other types of advertising characters, three-dimensional luminous characters have become more and more popular in recent years. It uses acrylic boards as panels, bends the wall panels of characters with plates or profiles, and then installs lights...

AI Technical Summary

Problems solved by technology

[0005] The present invention aims at the problem that the display of advertisement characters by the supporting software of the current advertisement character processing system is not vivid enough. By establishing a polygonal grid on the surface of the advertisement characters and stretching along a certain direction, the three-dimensional display of the advertisement characters is realized, and a A 3D Display Method Oriented to Advertisement Character Processing with Strong Reality and Good Interactivity

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