A three-dimensional scene-oriented vector icon drawing method and device

Abstract

The invention discloses a vector plot drawing method and a vector plot drawing device for a three-dimensional scene. The vector plot drawing method comprises the following steps of: 1) defining various icon objects (regular / irregular); 2) designing geometric algorithms for realizing each icon object; 3) drawing an icon object, and storing basic information of the icon object; and 4) setting editing logic for various icon objects. The method comprises regular icon drawing and editing and irregular icon drawing and editing, can be flexibly expanded, and is suitable for drawing and editing of various professional combined primitives. The method is suitable for various types of icon drawing scenes of a desktop terminal, a Web terminal and a mobile terminal, and has been practiced in various terminal applications. Meanwhile, although the scheme is three-dimensional drawing, the scheme can be flexibly expanded, is suitable for drawing and editing of various professional combined primitives,and can also be slightly adjusted to be suitable for drawing and editing of two-dimensional icons. The icon drawing algorithm is mature and stable, has been verified by practical application of various large open source map platforms, and has a relatively high popularization value.

Description

technical field [0001] The present invention relates to the field of icon drawing and editing, and more specifically, relates to a method and device for drawing vector icons oriented to three-dimensional scenes. Background technique [0002] Icons can be divided into regular icons and irregular icons. Regular icons mean that their geometric shape and the proportion relationship of each part are fixed, and do not change according to time, place and other factors, such as flags, compass icons, etc., irregular icons Icons refer to icons that cannot or cannot form standardized data at all, and require specific algorithms to describe graphical features, such as arrows, regions, etc. that are scaled or semi-scaled. [0003] Icon drawing and editing functions are the basic functions of emergency rescue and other application systems. Traditional icon drawing methods in two-dimensional space cannot adapt to three-dimensional application scenarios. The existing 3D icon drawing metho...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a more efficient and feasible 3D scene-oriented method for the defects that the existing 3D icon drawing method in the prior art is too complex and has low performance and cannot be quickly applied to 3D application systems. A method and device for drawing vector icons, the purpose of which is to realize fast rendering of vector icons oriented to three-dimensional scenes

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