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Three-dimensional particle system large scale sea climate simulation method based on octree

A marine climate and particle system technology, applied in the three-dimensional field, can solve the problems of insufficient application to display marine climate changes, etc., and achieve the effect of easy and fast retrieval

Active Publication Date: 2016-01-20
BEIJING THREEDA TECH
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Problems solved by technology

But the existing particle system technology has not been fully applied to show the change of ocean climate

Method used

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  • Three-dimensional particle system large scale sea climate simulation method based on octree

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Embodiment

[0025] refer to figure 1 , the method for simulating large-scale marine climate based on the octree-based three-dimensional particle system described in this embodiment, the method:

[0026] S1, store the marine monitoring data in the spatial database in the form of an octree index;

[0027] S2, from the spatial database, obtain the octree data set A within the specified time period in the target observation area on Digital Earth;

[0028] S3, divide the target observation area on Digital Earth into multiple subspaces according to the principle of octree, and place particle emitters in each divided subspace;

[0029] S4, establish the association relationship between the data in the octree data set A and the particle emitter in the subspace, and set the parameters of the particle emitter in the subspace according to the data characteristics, so that the particles emitted by the particle emitter run along the ellipsoidal coordinate trajectory . The parameters of the particle...

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Abstract

The invention discloses a three-dimensional particle system large scale sea climate simulation method based on an octree and belongs to the three-dimensional technology field. The method comprises steps that, sea monitoring data is stored in a space database; an octree data set A at a designated time segment in a target observation region on a digital earth from the space database is acquired; the target observation region on the digital earth is divided according to the octree principle into multiple sub spaces, a particle emitter is arranged in each division sub space; association relations between data in the octree data set A and the particle emitters in the sub spaces are established, particle emitter parameters in the sub spaces are set according to data characteristics to make particles emitted by the particle emitters to operate along ellipsoid coordinate locus. Through the method, data space attributes can be clearly expressed, rapid retrieval can be conveniently carried out, and thereby data characteristic expression and true monitoring result reduction can be realized through limited bearable rapidly-displayed data bulk at any detail level.

Description

technical field [0001] The invention relates to the field of three-dimensional technology, in particular to a method for displaying global ocean climate by using an octree-based three-dimensional particle system. Background technique [0002] In existing applications, there are technical implementations that use quadtree three-dimensional particle systems to display large-scale weather data, but quadtrees are usually used for map segmentation and surface location indexing, and cannot express spatial attributes. Limited by the two-dimensional segmentation characteristics of the quadtree, in practical applications, the weather data can only be attached to the surface, losing its spatial attributes. [0003] Particle systems represent techniques in 3D computer graphics for simulating certain blurry phenomena that are difficult to achieve realistically with other traditional rendering techniques. Phenomena that are often simulated using particle systems are fire, explosions, sm...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T17/00
Inventor 孙宁杨邦会胡乔利包秀媛
Owner BEIJING THREEDA TECH
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