Scientific computation visualization interactive virtual reality computer dynamic simulation etc . , to study thoroughly and carefully on critical technologies such as mixed - language programming simplification of scene models displaying realistic image and animation of 3d scene models and so on in this dissertation , the methods to build scene models were studied and applied to develop a dynamic simulation system of 3d railway scene based on this idea , the major study contents and results can be summarized as follows : 1 ) mixed - language programming can complement each other between different programming languages and the method has a general significance and can become popular many computation models including development of dtm optimum of dtm and reorganization of dtm were developed with fortran language in order to use the ripe codes , the dissertation succeeded in integrating the developed fortran codes to the visual c + + environment and achieving the course of mixed - language programming 2 ) the methods to build scene models for 3d location design were discussed in the dissertation and the development and animation of scene models had been realized by applying synthetically those technologies such as computer graphic computational geometry and geometrical modeling and computer dynamic simulation etc , and adopting opengl 3d graph library then achievement was got by using the technology of 3d visualization to livingly express design results 3 ) combing with the concerned study and development projects , adopting vc + + as development tools and in the light of those theories and algorithms stated in this dissertation , a software , which could build scene models with realism for 3d railway location design , in the name of " the dynamic simulation system of 3d scene of railway " was developed . , the correctness was proved by using the software to build the 3d scene models and achieve their animation of suining - chongqing railway and yunnan - xizang railway 本文綜合利用計(jì)算機(jī)圖形學(xué)、科學(xué)計(jì)算可視化、人機(jī)交互、虛擬現(xiàn)實(shí)、計(jì)算機(jī)動態(tài)仿真等理論和技術(shù),針對混合語言編程、真實(shí)感圖形繪制以及三維景觀模型的動畫驅(qū)動等關(guān)鍵技術(shù),進(jìn)行了深入細(xì)致的研究,從而探討了建立逼真景觀模型的方法,并基于本文提出的方法研制了一個鐵路線路三維景觀動態(tài)仿真系統(tǒng)?;谶@一思想,本文主要研究內(nèi)容及研究成果如下: 1 )混合語言編程可以實(shí)現(xiàn)語言優(yōu)勢互補(bǔ),具有普遍意義。針對數(shù)字地面模型的建立、優(yōu)化、重組等計(jì)算模塊是成熟的fortran程序代碼,本文成功實(shí)現(xiàn)了vc + +與fortran語言的混編; 2 )緊緊圍繞三維選線設(shè)計(jì)中景觀模型的建立方法展開研究,綜合利用計(jì)算機(jī)圖形學(xué)、計(jì)算幾何及幾何造型學(xué)以及計(jì)算機(jī)仿真技術(shù),采用opengl三維圖形庫,實(shí)現(xiàn)了景觀模型的建立以及動畫驅(qū)動,使得三維可視化技術(shù)成功應(yīng)用于選線設(shè)計(jì)成果的三維直觀表達(dá); 3 )結(jié)合有關(guān)科研課題,利用vc + +開發(fā)工具,以本文所述的理論和算法為基礎(chǔ),研制和開發(fā)了一個建立三維選線設(shè)計(jì)逼真景觀模型的系統(tǒng)軟件- - “鐵路線路三維景觀動態(tài)仿真系統(tǒng)” 。