A simulation method of plant leaf wilting based on physical model

Abstract

The invention discloses a plant leaf wilting simulation method based on a physical model, relating to the field of computer simulation technology. The method comprises the following steps of: constructing a voxel set of a three-dimensional plant leaf model, wherein the voxel set comprises a plurality of hexahedron units used for simulating plant leaf mesophyll internal cells; converting the voxel set into a mass-spring model; after applying an external force to the mass-spring model, simulating the displacement of each peak in the hexahedron units; and according to the displacement of each peak in the hexahedron units, interpolating a coordinate of a peak of a triangular mesh in the plant leaf model. According to the method, the voxel set is constructed through the three-dimensional model, on the basis that the mass-spring model constructed by the voxel set is multi-layered, the model is more close to an internal structure of a real plant leaf, and the connection between mass springs is more stable; an implicit Newmark integration algorithm is employed, simulation can be carried out under a large step length, and the model is ensured to carry out real-time visual simulation.

Description

technical field [0001] The invention relates to the technical field of computer simulation, in particular to a method for simulating wilting of plant leaves based on a physical model. Background technique [0002] Plant morphological structure modeling and behavior characteristics simulation is an important research content in the field of computer graphics and digital plants. As we all know, the morphology of plants is a dynamic development process. Under the influence of different environmental conditions and human factors, the topological structure of plants will change significantly. As an important organ of a plant, the shape of the leaf will also change significantly with the external environment and its internal physiological processes. For example, factors such as water shortage, hypoxia, high temperature, and disease may cause plant leaves to curl and wilt. deformation. In the field of digital plants, the intelligent expression of plant characteristics is a relati...

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Problems solved by technology

However, the mass point spring connection method used in this method is not a stable connection method; at the same time, the integration method used is an explicit method, and it is often necessary to set a very small step size in the simulation, resulting in a very long time for the entire simulation process ( more than 1 hour), it is difficult to meet the needs of high-precision or large-deformation real-time visual simulation

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