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Modeling and Simulation of Chinar

Author: MaZhenJie
Tutor: JiangZuoMing
School: Xi'an University of Electronic Science and Technology
Course: Applied Computer Technology
Keywords: Virtual Reality Bezier curves Texture mapping State space L- system
CLC: TP391.9
Type: Master's thesis
Year: 2008
Downloads: 119
Quote: 2
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Abstract


In the field of virtual reality technology , virtual plant is a research hotspot . Virtual plant has been used in the field of agronomy, ecology , botany, forestry, virtual teaching . This paper plane trees , for example, the simulation of virtual trees . Mainly to do the work of the following three aspects : First , for Platanus blades realistic three-dimensional simulation , a modeling method . Random displacement method to generate the veins of the leaves , the expression of Bezier curves the curve of the blade 's edge , blade modeling based on the sub - grid generation method , in order to ensure the continuity and smoothness of the surface of the blade ; using patch-based cluster texture mapping method of the blade for the textures generated Platanus blades ; PRT illumination model for real-time rendering , so that the display effect is more realistic . The experimental results show that the method can generate a variety of shapes of the plane leaves , you can obtain a satisfactory three-dimensional simulation results . Secondly, based on state space theory , using the three - dimensional state space vector movement to represent the the virtual tree stems morphological changes in growth . Tree stem growth process , the state-space - based method can express the role of the phototaxis the Mycobacterium weight of tree stems form . Finally, the L-system Platanus tree growth process to be modeled. Basic theory of L- systems , summarized and the empirical formula of the the abstract plane trees growing process , initialization state and describe rules iterations generate a sequence of characters , and produced a string of geometrical interpretation output terminal the simulation of the plane trees, the growth process .

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CLC: > Industrial Technology > Automation technology,computer technology > Computing technology,computer technology > Computer applications > Information processing (information processing) > Computer simulation
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