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Efficient particle cloud drawing method in flight scene simulation

A visual simulation, medium and high-efficiency technology, applied in the fields of computer graphics, computer virtual reality, and visual simulation technology, can solve problems such as particle cloud rendering without consideration

Active Publication Date: 2017-04-19
北京大学(天津滨海)新一代信息技术研究院
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, none of the above documents considered how to efficiently draw particle clouds

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  • Efficient particle cloud drawing method in flight scene simulation
  • Efficient particle cloud drawing method in flight scene simulation
  • Efficient particle cloud drawing method in flight scene simulation

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Embodiment Construction

[0042] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention.

[0043] working principle:

[0044]Under natural meteorological conditions, there are often boundless and complex cloud clusters in the clouds of the sky. When an aircraft flies in the air, it has a wide viewing angle, a wide range of vision, and a deep field of view. As the core component of the flight simulator, the three-dimensional flight The visual simulation system needs to solve how to truly simulate the visual scene during the flight of the aircraft and generate a realistic picture. The cloud layer is an extremely important element with a large number in the flight scene, and the present invention solves the key problem of efficiently organizing and drawing a large-scale cloud layer scene. For flight simulation, the viewpoint changes continuously and smoothly (the state ...

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Abstract

The invention provides an efficient particle cloud drawing method in flight scene simulation. The method comprises the steps that 1) a particle cloud model library based on a bulletin board is constructed; 2) a circular area with the center of a viewpoint position is used as a visible area, and an area covered by a grid outside the visible area is used as a reserved area; 3) when a cloud block enters the visual area and the cloud block does not contain particle data, a cloud model is randomly selected from the particle cloud model library to generate the particle data of the cloud block based on the cloud model; when the cloud block moves away from the visual area and is located in the reserved area, the particle data are not deleted temporarily; when the cloud block moves away from the reserved area, the particle data are deleted; and 4) particle collection, sorting and drawing are carried out. The method can be used in flight scene simulation and a large-scale outdoor virtual reality system. The method can realize efficient cloud drawing, can simulate a variety of cloud morphology, and has a good simulation result.

Description

technical field [0001] The invention relates to the fields of computer virtual reality, visual simulation technology and computer graphics, in particular to flight visual simulation, and in particular to an efficient particle cloud drawing method in flight visual simulation. Background technique [0002] The aircraft flight visual simulation system uses high-fidelity three-dimensional images or scene simulations to reproduce the flight process of the aircraft, mainly including scene simulation models, multi-day, multi-weather environment and its changes, etc. Visual simulation. The scene simulation model refers to all the model structures involved in the flight environment simulation, such as various 3D models of terrain, airports, buildings, aircrafts, etc. Visual presentation in environments such as , rain, and snow. [0003] Cloud effects are an important part of outdoor scenes. In most real-time rendering systems designed for small-scale scenes or scenes with viewpoints...

Claims

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Application Information

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IPC IPC(8): G06T15/00G06T15/20G06T17/05
Inventor 李胜徐泽骅汪国平
Owner 北京大学(天津滨海)新一代信息技术研究院
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