求曲面之交線 的英文怎麼說
中文拼音 [qiúqūmiànzhījiāoxiàn]
求曲面之交線
英文
intersect- 求 : Ⅰ動詞1 (請求; 要求) ask; beg; request; entreat; beseech : 求人幫忙 ask sb a favour; ask a favou...
- 曲 : 曲名詞1 (一種韻文形式) qu a type of verse for singing which emerged in the southern song and ji...
- 面 : Ⅰ名詞1 (頭的前部; 臉) face 2 (物體的表面) surface; top 3 (外露的一層或正面) outside; the ri...
- 交 : Ⅰ動詞1 (把事物轉移給有關方面) hand over; give up; deliver 2 (到某一時辰或季節) reach (a cert...
- 線 : 名詞1 (用絲、棉、金屬等製成的細長的東西) thread; string; wire 2 [數學] (一個點任意移動所構成的...
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In some time - critical situation, continuous ssi is computation bottleneck of some solid modeling system. conventional approach for solving continuous ssi often uses intersection algorithm iteratively without taking the characteristic of the surface into account to simplify computation. the dissertation analyzes the intersect curve structure of continue surface, from the point of intersect curve ' s evolution, it describes the relationship between topology of offset surface intersect curve and topology transmit point ( ttp )
等距曲面和運動曲面在cad cam領域中有著重要的應用,在一些時間敏感場合例如數控加工動態模擬,等距曲面和運動曲面等連續變化曲面求交運算已成為這些系統的計算瓶頸,連續變化曲面求交問題的通常解法是採用曲面求交演算法反復迭代計算交線,沒有考慮連續變化曲面交線之間的相似性進行求交簡化,效率上一直不能有很大的提高。It presents algorithms to extract the similarity of intersect curve in different offset distance and use ttp to label the topology of surface intersect. the algorithms succeed in combination of tracing method and topology information, and present an optimized offset ssi algorithm. the optimized algorithm pre - processes surfaces to achieve ttp, and decides calculation strategy of starting points by analyzing the properties of ttp on the surface
本文通過對等距曲面交線結構進行了大量的分析,從交線的形成和演化過程,揭示了等距曲面的交線拓撲結構和曲面上特徵點之間存在著本質的聯系,提取等距曲面不同offset距離交線環的相關性,並使用特徵點來標識交線環的拓撲信息,成功地將拓撲信息和跟蹤法相結合,設計了一種等距曲面求交優化演算法。Thirdly, the connection between bezier curves and surfaces and their bbc forms is gained. it is not hard to conclude that the bbc representation of curves and surfaces is the extensive form of bezier curves and surfaces
6 )基於bsc和bbc理論的曲線曲面的重新參數化方法以及相應的重新參數化方法在曲線曲面求交處理中的應用,這是本文的重點內容之五。
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