Recently, 3D game technology has been widely used in various research areas, such as virtual reality system, vehicle simulation training system and military simulation system, etc. It pushed ahead with the development of many fields, and become the research hotspot today. 3D game development has become an important research area in the social from walks of life. Today''s game engine has been developed into an integrated system which is made up multiple subsystems. It provides all functions of the development required. This paper applies trigonometric function to simulate any graphics principles, and develops a based on the textualized 3D game engine system. With an emphasis on using trigonometric functions, it describes the key factor-velocity in the movement, writes the described mathematical function into the text, and makes into “movement script”, which enables the production of human motion more concise and convenient.
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