【摘要】：近年來(lái),用計(jì)算機(jī)技術(shù)來(lái)繪制真實(shí)世界中的物體的計(jì)算機(jī)圖形學(xué)成為了一門頗受關(guān)注的科學(xué)。在計(jì)算機(jī)圖形學(xué)的研究中,不規(guī)則物體和動(dòng)態(tài)景物的模擬一直是其熱門和難點(diǎn)之一。粒子系統(tǒng)在對(duì)不規(guī)則物體和模糊景物的動(dòng)態(tài)模擬方面有著獨(dú)特的優(yōu)勢(shì),自從被提出之后,就得到了各個(gè)領(lǐng)域廣泛的應(yīng)用。粒子系統(tǒng)的理論是以用大規(guī)模細(xì)小的粒子來(lái)組合成仿真的物體為基礎(chǔ)的,這一點(diǎn)也是其與傳統(tǒng)建模方法的區(qū)別之處。粒子系統(tǒng)使用簡(jiǎn)單常見(jiàn)的圖元來(lái)構(gòu)造不規(guī)則模糊物體,并且這些粒子的屬性會(huì)隨著時(shí)間的推移而不斷的變化更新,從而達(dá)到動(dòng)態(tài)實(shí)時(shí)性的特點(diǎn)。 在大型3D游戲、影視娛樂(lè)、多媒體廣告等領(lǐng)域的產(chǎn)品中經(jīng)常能看到山、水、雨、雪、煙霧等被模擬出來(lái)的自然景物。自然景物是不規(guī)則模糊物體的代表,對(duì)其的模擬一直是計(jì)算機(jī)仿真研究的一個(gè)重要方面。煙花燃放不但是人們?cè)诠?jié)日期間常見(jiàn)的慶祝方式,也是不規(guī)則模糊物體模擬研究的焦點(diǎn)。在動(dòng)態(tài)煙花模擬研究方面,國(guó)內(nèi)外許多研究人員在傳統(tǒng)建模模型或是粒子系統(tǒng)建模模型的基礎(chǔ)上,結(jié)合各種各樣的技術(shù),從不同的側(cè)重點(diǎn)對(duì)煙花進(jìn)行了模擬,取得了相當(dāng)大的成果。 本篇論文首先概述了計(jì)算機(jī)圖形學(xué)的相關(guān)理論知識(shí)以及本文中實(shí)驗(yàn)用到的VisualC++6.0開(kāi)發(fā)工具和OpenGL圖形接口技術(shù),然后對(duì)粒子系統(tǒng)的一些基本理論原理進(jìn)行了詳細(xì)的介紹,并深入分析了煙花燃放的運(yùn)動(dòng)過(guò)程。有形動(dòng)態(tài)煙花模擬的關(guān)鍵點(diǎn)在于如何控制煙花粒子的運(yùn)動(dòng)軌跡。對(duì)于復(fù)雜的有形物體可以把該物體分割成多部分并分別進(jìn)行模擬,再拼接繪制成整體。在VC++開(kāi)發(fā)工具基礎(chǔ)上,結(jié)合OpenGL圖形接口提供的紋理映射、色彩融合、幀緩沖、顯示列表等技術(shù),采用多種圖形組合拼接成不規(guī)則圖形的方法設(shè)計(jì)并實(shí)現(xiàn)了對(duì)圓形銅錢幣形狀煙花的動(dòng)態(tài)模擬。然后對(duì)基于粒子系統(tǒng)的煙花基本模擬進(jìn)行了改進(jìn),結(jié)合API庫(kù)中的消息處理函數(shù)可以用鼠標(biāo)對(duì)煙花加以控制,進(jìn)一步提高了對(duì)煙花動(dòng)態(tài)模擬的靈活可控性,在煙花模擬的過(guò)程中加入實(shí)時(shí)音頻文件,從聽(tīng)覺(jué)角度豐滿了煙花模擬的沉浸感、真實(shí)感。最后對(duì)全文進(jìn)行了總結(jié),并提出了對(duì)今后研究的展望。
[Abstract]:In recent years, computer graphics of real-world objects using computer technology has become a concerned science. In the research of computer graphics, the simulation of irregular objects and dynamic objects has been one of the hot and difficult points. Particle system has a unique advantage in the dynamic simulation of irregular objects and fuzzy objects, and has been widely used in various fields since it was proposed. The theory of particle system is based on the combination of large and small particles into simulated objects, which is the difference between particle system and traditional modeling methods. The particle system uses simple and common graph elements to construct irregular fuzzy objects, and the properties of these particles will be changed and updated with the passage of time, thus achieving the characteristics of dynamic real-time. Mountains, water, rain, snow, smoke and so on are often seen in the products of large-scale 3D games, film and television entertainment, multimedia advertising and so on. Natural scenery is the representative of irregular fuzzy object, and its simulation is always an important aspect of computer simulation. Fireworks discharge is not only a common celebration method during festivals, but also the focus of irregular fuzzy object simulation. In the research of dynamic fireworks simulation, many researchers at home and abroad based on the traditional modeling model or particle system modeling model, combined with a variety of technologies, from different emphasis on the simulation of fireworks. Considerable results have been achieved. This paper first summarizes the related theory of computer graphics, the VisualC 6.0 development tools and OpenGL graphic interface technology used in the experiment in this paper, and then introduces the basic theory of particle system in detail. The movement process of fireworks discharge is analyzed in depth. The key point of visible dynamic fireworks simulation is how to control the trajectory of fireworks particles. For a complex tangible object, the object can be divided into multiple parts and simulated separately, and then spliced into a whole. On the basis of VC development tools, combining with the techniques of texture mapping, color fusion, frame buffer, display list and so on provided by OpenGL graphic interface, The dynamic simulation of circular copper coin fireworks is designed and realized by using a variety of graphic combinations to form irregular shapes. Then, the basic simulation of fireworks based on particle system is improved, combined with the message processing function in the API library, the fireworks can be controlled with the mouse, which further improves the flexibility and controllability of the dynamic simulation of fireworks. In the process of fireworks simulation, real-time audio files are added to fill the immersion and reality of fireworks simulation from the perspective of hearing. Finally, the paper summarizes the full text and puts forward the prospect of future research.
【學(xué)位授予單位】：安徽大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2013
【分類號(hào)】：TP391.41

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本文編號(hào)：2320090