Hybrid Rendering Method of Electromagnetic Situation Based on Delay and Volume Particles

Abstract

The invention discloses an electromagnetic situation mixed rendering method based on deferring and volume particles, and the technical problem of poor timeliness in the conventional mixed rendering method is solved. According to the technical scheme, the method includes: building a spatial electromagnetic situation model, and obtaining electromagnetic situation three-dimensional volume data; simultaneously drawing a viewpoint model and an illumination model by employing a texture mapping volume rendering algorithm based on the semi-angle slice; realizing volume particle rendering by the combination of a particle system and the texture mapping volume rendering algorithm based on the semi-angle slice; and finally, by employing the combination of deferred rendering pipelines and volume particle rendering pipelines, mapping the electromagnetic situation volume data to a volume particle system, and realizing real-time mixed rendering of three-dimensional scenes and the electromagnetic situation volume data. According to the method, the effect of the sense of reality of volume rendering is improved by employing the texture mapping volume rendering algorithm based on the semi-angle slice; and volume particle rendering is realized with the combination of the particle system and the texture mapping volume rendering algorithm based on the semi-angle slice, and the rendering effect and performance of the particle system are greatly enhanced.

Description

technical field [0001] The invention relates to a hybrid rendering method, in particular to an electromagnetic situation hybrid rendering method based on delay and volume particles. Background technique [0002] The document "Visualization 3D atmospheric data with spherical volume texture on virtual globes Liang Jianming Computers&Geosciences 2014, Volume 68, pages 81-91" discloses a hybrid rendering method using deferred rendering technology combined with ray-casting algorithms. This method is based on the rendering of 3D scenes , using deferred rendering technology to store the 3D scene in the position cache and color cache, and then perform mixed rendering according to the position and color information of the ray-casting volume rendering results, which can better realize the mixed rendering of the 3D scene and volume data. The method described in the literature performs volume rendering through a ray-casting algorithm. When the required rendering data is large, the volum...

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the disadvantage of poor real-time performance of existing hybrid rendering methods, the present invention provides a hybrid rendering method of electromagnetic situation based on delay and volume particles

Because the texture mapping volume rendering algorithm based on half-angle slices is used to draw the viewpoint and illumination model at the same time, the defect that the background technology method cannot consider the illumination model is solved, and the realistic effect of volume rendering is improved; the particle system is combined with the texture mapping based on half-angle slices The volume rendering algorithm is combined to achieve volume particle rendering, which greatly improves the rendering effect and performance of the particle system

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