3-D body automatic generation method for 3-D simulation display

Abstract

The method includes steps: first, determining data of vector line and data of cross section of 3D body to be displayed; next, based on data of vector line to select position to place cross section on vector line; then, based on data of cross section to place cross section on the selected position; connecting corresponding points between each adjacent two pieces of cross section by using straight lines so as to generate 3D curved surface. Using technique of matching cross section through data of vector line, the method generates 3D scene automatically, provides vivid virtual effect near to scene produced from fine moldering approach. The invention saves moldering and preprocessing time, makes updating 3D scene possible in real time.

Description

technical field [0001] The invention relates to the technical field of three-dimensional analog display, in particular to a method for automatically generating a three-dimensional body for three-dimensional analog display. Background technique [0002] Three-dimensional simulation display technology is dedicated to recreating the real world in life on the computer, and can extract effective information of this world, realize statistics, analysis, and prediction functions to support human decision-making activities. [0003] The existing 3D scene production technology generally uses two methods to realize the performance of 3D information: [0004] One is to use vector data to automatically generate 3D scenes, such as expressing road and green space information with monochromatic line and surface objects of different colors, and more complex ones, such as building vector data plus floor attribute fields to generate vector buildings Blocks, or add textures, etc., but the disp...

AI Technical Summary

Problems solved by technology

Although the display effect of this method is very realistic, the objects in such scenes require a lot of manual modeling, the engineering workload is huge, and the effect depends on the quality of the modeling staff, and when the three-dimensional attribute data changes, the display effect cannot be synchronized Variety

[0006] On the other hand, in the process of realizing 3D simulation display, there is another problem that must be paid attention to, that is, how to operate and access objects in this virtual world with abstract geographic information objects while providing realistic virtual effects

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