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  • 學位論文

賽車遊戲之水滴與污垢特效研究

A Study of Water Drops and Dirt Effects in Racing Games

指導教授 : 周文修
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摘要


現今的數位遊戲由於繪圖技術的成熟,不論是模型精細度、動態光影、特效系統等都有顯著的提昇。由其發展趨勢可以察覺,為了增添遊戲內容的變化性與互動性,開始加入程序性技術與物理模擬系統,這樣一來原本靜態的遊戲環境將可以隨著時間、事件或者互動行為的影響而有所改變。 基於上述原因,本研究將結合程序性紋理技術與流體模擬技巧,發展一套處理架構,動態產生賽車遊戲裡水滴與污垢的特效。我們所提出的架構包含二個模組:(1)基本紋理模組(2)向量紋理模組。基本紋理模組,源於程序性紋理的製作概念,將雜訊圖或美術人員製作的基本圖案,透過不同的影像濾鏡加工,製作出符合真實視覺感官的污垢材質。藉此模擬賽車遊戲中,車子於泥濘地形高速行駛時,各種不規則的污垢飛濺並附著於擋風玻璃上的情形。向量紋理模組,則是改善圖學演算式的流體模擬系統,將外力產生的影響,以向量場的形式合成記錄於向量紋理中,接著由此紋理更新基本紋理中的像素資料,模擬出流體流動行為。最後再以混合式的繪圖方法,描繪雨水與污垢夾雜的情形。 透過此動態紋理處理架構,模擬出雨水、污垢遭受雨刷及風力等外力影響時,產生在擋風玻璃上的紋理動畫。藉此提昇玩家遊戲時與場景的連結性與互動性,期盼玩家能夠更身歷其境地遨遊於遊戲世界中,享受遊戲所帶來的樂趣。

並列摘要


Under the advancement of computer graphics, digital games have been improved significantly, in terms of model granularity, dynamic lighting, and special effects. The trend indicates that procedural technology and physical simulation system have been added to increase the variety and interactivity of game content, so that the originally still game environment may be changed according to the impact of time, event or interactive behaviors. Therefore, this study will combine the procedural texture technology and fluid simulation skills to develop a set of processing structures to dynamically produce the effects of water droplets and dirt in the auto racing game. The proposed structures include two modules: (1) the basic texture module; and (2) the vector texture module. The basic texture module is originated from the procedural texture production concept, it will process the noise map or basic patterns prepared by artists with image filters to create dirt material that is consistent with real visual senses. This is applied to simulate the splashing effect of dirt with various irregularities when the car is racing fast in muddy game scenarios. The vector texture module is a fluid simulation system. It combines and records the impact in the form of vector filed in the vector texture, which then updates the pixel data in the basic texture to simulate the fluid behavior. Finally, the mixed type of graphic methods is employed to depict the effect of the mingling of rain and dirt. This dynamic texture processing structure is applied to simulate the texture dynamics of rain and dirt on the windshield glass in racing games under the considerations of wipers and wind, to enhance the reality in racing games.

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