A Method of Accurate Hit Detection and Effect Generation in Virtual Battlefield

Abstract

The invention provides a precise hit detection and effect generation method in virtual battlefield. A collision surrounding body is added by taking a functional part of a model as a unit at a geometric modeling stage of the model, an equivalent geometry of an internal key component is built as a collision agent, a geometric appearance model is separated from a physical collision model, the problem of inconsistent collision detection caused by LOD (level of detail) model technology is solved, component level description of the physical collision attribute of the model is realized without increasing the number of polygons of the model, and conditions are provided for efficient and precise hit detection. Special processing of hit detection is added at a collision detection stage, the penetration length of arms and ammunition is taken as a reference, component collision results are sequentially calculated by a detection group and equivalent penetrating length integral building method on a penetration path, component level hit detection is realized, and the problem of excessive coarse granularity of traditional collision detection is solved.

Description

technical field [0001] The invention belongs to the field of visual combat simulation, in particular to a method for accurate hit detection and damage effect generation in a virtual battlefield. Background technique [0002] In the virtual battlefield, the performance simulation of the weapon system needs to conduct accurate hit detection on the collision between various weapons and ammunition such as missiles, artillery shells, bullets and bombs and different 3D models in the scene, so as to determine the effect of weapon strikes and the degree of target damage . In the field of computer graphics, hit detection is a kind of collision detection, and it has been widely used in visual combat simulation since it was produced. [0003] After decades of development, collision detection technology has produced many mature technologies. For collision detection between rigid body motion models, there are mainly space decomposition and hierarchical bounding volumes. The main idea o...

AI Technical Summary

Problems solved by technology

[0004] The above collision detection technology belongs to the classic collision detection technology in the field of computer graphics, which can better realize the completeness and timeliness of the hit detection in the 3D virtual scene, but because the calculation of the complex collision effect is not considered, the collision detection only provides such as Limited information such as collision point coordinates, collision surfaces, and collision objects cannot meet the accuracy requirements of hit detection

For example, in the virtual battlefield, when the shell hits the tank, the current hit detection method can only obtain the coordinates of the hit point and the geometry of the hit. Since the 3D model of the tank in the 3D virtual scene is just a simple shell-shaped geometry that reflects the shape of the tank, It cannot provide detailed internal structure information like the CAD (Computer Aided Design) model, and cannot reflect the difference in damage effects when different ammunition hits different parts of the tank model, especially for the internal damage effects of the vehicle body

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