An Immersive Virtual Fireworks Simulation Method Based on Sketch Retrieval and Shape Controllable

Abstract

The invention discloses an immersive virtual firework simulation method based on sketch retrieval and controllable shape, including: (1) on the client side, the user draws a sketch of the model to be viewed in the virtual scene as system input; (2) On the server side, use the model retrieval method to retrieve the 3D fireworks model that is most similar to the drawn sketch, and use it as the 3D result model; (3) select the cluster centroid, and form an intermediate shape after the cluster centroid converges, and simulate the launch point to The first-level explosion process of the intermediate shape; (4) storing the sampling vertex positions and texture coordinates of the 3D result model obtained in step (2), and simulating the second-level explosion process from the intermediate shape to the final shape. The method of the invention allows the user to immerse in the virtual scene, manually draws the shape of the firework to watch, and the server processes and simulates the multi-stage explosion of the firework, so that the user can experience lifelike visual special effects.

Description

technical field [0001] The invention relates to the technical fields of computer graphics and virtual reality, in particular to an immersive virtual fireworks model method based on sketch retrieval and controllable shape. Background technique [0002] At present, the simulation of fireworks adopts the particle system. The particle system is a technology for simulating some specific fuzzy phenomena in 3D computer graphics. This technology uses a large number of small patches, 3D models or other graphics primitives to simulate some irregularities. The ambiguity phenomenon, constructing complex objects with simple elements. After more than 20 years of development, particle systems are widely used to simulate complex objects without obvious smooth surfaces such as fire, dust, clouds, fog, smoke, water flow, explosion sparks, and meteor trails. [0003] Usually the position and movement of particle systems in 3D space are controlled by emitters. Emitters are primarily represent...

AI Technical Summary

Problems solved by technology

[0008] However, in the existing firework simulation methods, there is no firework model that allows users to operate virtual objects, allows entertainers to more intuitively contact the game scene, and highly immerse themselves in the virtual world. Therefore, the simulation of traditional phenomena and virtual reality Combined, it has extraordinary significance

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