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Open graphics library (OpenGL)-based real cloudland virtualization method

A cloudscape, real technology, applied in the field of real cloudscape virtualization based on OpenGL, can solve problems such as difficult to virtual three-dimensional solid clouds

Inactive Publication Date: 2013-01-09
SUZHOU LIANGJIANG TECH
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  • Summary
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Problems solved by technology

[0003] The purpose of the present invention is to provide a method for virtualizing real cloudscapes based on OpenGL, which solves the problems in the prior art that it is difficult to virtualize a three-dimensional solid cloud with a sense of reality

Method used

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  • Open graphics library (OpenGL)-based real cloudland virtualization method
  • Open graphics library (OpenGL)-based real cloudland virtualization method
  • Open graphics library (OpenGL)-based real cloudland virtualization method

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Embodiment

[0059] Such as figure 1 As shown, the present invention is based on OpenGL cloudscape realistic modeling and rendering method specifically according to the following steps:

[0060] 1. Cloudscape modeling

[0061] 1.1 Change rules of cellular automata

[0062] For cloudscape modeling based on cellular automata, this is a modeling method based on time and state process; for cloudscape effects, the general method is to set three states for each small cell : cld (cloud particles), hum (humidity value), act (activation factor)

[0063] Among them, cld represents cloud particles. When the cld logic variable is set to 1, there are cloud particles in the current state. Hum represents the humidity value in the current state. According to the defined rules, only when the humidity is sufficient, it is possible to form cloud particles. act represents the activation factor. This variable is manually set, indicating whether the formation of cloud particles is underway in the current st...

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Abstract

The invention discloses an open graphics library (OpenGL)-based real cloudland virtualization method. The method is characterized by comprising the following steps of: (1) performing cloudland modeling according to a cellular automata theory, setting state parameters of each small cellular, and determining virtual simulation times; (2) initializing the state parameters of each small cellular, and forming a cloudland according to a cloud formation formula; and (3) performing lighting rendering on the formed cloudland according to the situation that whether a variable event of the cellular is generated, and then outputting a simulated virtual cloudland result. By the method, a virtual cloudland with strong sense of reality is obtained; and moreover, the dynamic change of the cloudland is controllable, the sense of reality of the cloudland is increased, the lighting mode is simplified, the computer amount is reduced, and the real-time performance is ensured.

Description

technical field [0001] The invention belongs to the technical field of virtual simulation in the real world, and in particular relates to a method for virtualizing real cloudscapes based on OpenGL. Background technique [0002] As a gaseous phenomenon, clouds are formed by the random movement of countless small water droplets (particles). , will also be affected by the wind force, making it unpredictable. In the cloud rendering process, the influence of light on the cloud must also be considered, such as sunlight, internal scattering of the cloud, and reflection of the sky and the ground on the cloud. In addition, the cloud is huge in size and different levels of observation have different levels of detail. These complex characteristics of the cloud require a large amount of data when constructing its geometric model, and these data are highly random, and the amount of calculation is quite large, which makes it useless to describe it with classical Euclidean geometry. Stra...

Claims

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Application Information

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IPC IPC(8): G06T15/50
Inventor 陈国庆胡畔
Owner SUZHOU LIANGJIANG TECH
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