control mesh造句
例句與造句
- the model used to control mesh deforming is improved spring analogy with boundary improvement and torsional effect improvement
網(wǎng)格變形的物理模型采用改進(jìn)的彈簧近似模型，改進(jìn)措施包括邊界修正和扭轉(zhuǎn)效應(yīng)修正。 - based on theory of spline surface offset, the first one directly finds the control polygon mesh of the offset surface from the original control mesh
第一種算法依據(jù)樣條曲面等距原理，把對細(xì)分曲面的等距轉(zhuǎn)化為其等距前后控制網(wǎng)格的對應(yīng)關(guān)系。 - subdivision surface is a new geometric modeling technology of discrete surface based on mesh . it can express modeling surface through control mesh and subdivision rules
細(xì)分曲面是基于網(wǎng)格的離散曲面造型新技術(shù)，它通過定義控制網(wǎng)格和細(xì)分規(guī)則來表示造型曲面。 - two different methods for interference checking have been developed . quick feasibility checking is used to find a conservative feasible tool orientation by using the control mesh of a sculptured surface
在干涉檢測中用了兩種不同的算法，即快速檢測法和詳細(xì)檢測法，快速檢測法通過使用曲面的控制網(wǎng)格獲得刀具的可行位置。 - the problems include catmull-clark subdivision surfaces ca n't precisely represent standard conicoid except paraboloid, and it ca n't modify the shape of limited surfaces when the original control mesh be given
如：catmull-clark細(xì)分曲面無法精確表示除拋物面外的常規(guī)二次曲面；在給定初始控制網(wǎng)格的情況下，難以調(diào)整所生成曲面的形狀等。 - It's difficult to find control mesh in a sentence. 用control mesh造句挺難的
- both of them decrease the size of control mesh evidently, and meanwhile the quality of subdivision surface is guaranteed . all these save lots of time and space for successive storage, transmission and modification
可以在保證所需細(xì)分質(zhì)量前提下，使得表示細(xì)分曲面的控制網(wǎng)格上的幾何元素的數(shù)量明顯下降，從而為細(xì)分曲面的后續(xù)處理、存儲、傳輸節(jié)約了大量的時間和空間。 - according to topological structure of control mesh, we generate generalized rational parametric surfaces in two manners . for a control mesh with consistent parameterization, the surface can be easily constructed because it can be mapped to differential manifold directly
對于具有簡單拓?fù)浣Y(jié)構(gòu)，存在著一致的全局參數(shù)化的控制網(wǎng)格，我們將把控制網(wǎng)格直接映射到微分流形上，因此可以很容易地對曲面進(jìn)行構(gòu)造和控制。 - according to topological structure of control mesh, we generate generalized rational parametric surfaces in two manners . for a control mesh with consistent parameterization, the surface can be easily constructed because it can be mapped to differential manifold directly
對于具有簡單拓?fù)浣Y(jié)構(gòu)，存在著一致的全局參數(shù)化的控制網(wǎng)格，我們將把控制網(wǎng)格直接映射到微分流形上，因此可以很容易地對曲面進(jìn)行構(gòu)造和控制。 - (3 ) model reconstruction is a key step in reverse engineering . the acquisition of control mesh for loop subdivision surface from general triangle mesh is researched, and an algorithm is proposed to fulfill the reconstruction of subdivision surface from arbitrary dense mesh in topology
(3)模型重建是逆向工程的重要環(huán)節(jié)，本文提出了從三角網(wǎng)格模型獲得loop細(xì)分曲面的控制網(wǎng)格，從而實(shí)現(xiàn)了任意拓?fù)涿芗W(wǎng)格的細(xì)分曲面重建算法。 - the approach to exactly calculate geometric parameters of subdivision surface, such as limiting point, tangent vector and normal vector, are illustrated . ( 2 ) the number of geometric elements ( vertex, edge, facet ) within control mesh grows exponentially as the increase of subdivision levels in general subdivision schemes
(2)在正常的曲面細(xì)分過程中，控制網(wǎng)格上幾何元素(頂點(diǎn)、邊、面)的數(shù)量是按照幾何級數(shù)增加的，會產(chǎn)生龐大的冗余數(shù)據(jù)。 - in the framework, a control mesh may be arbitrary one-dimensional or two-dimensional orientated topological manifold, and the curve or surface is defined on differential manifold homeomorphic to the control mesh with a potential function as its basis functions . this method is an extension of nurbs, which efficiently overcomes the limitations of nurbs
廣義有理參數(shù)曲線曲面定義在與控制網(wǎng)格拓?fù)渫叩奈⒎至餍紊希愿叨纫话愕膭莺瘮?shù)為基函數(shù)，其控制網(wǎng)格可以是任意的一維拓?fù)淞餍魏投S可定向拓?fù)淞餍巍?/li> - in the framework, a control mesh may be arbitrary one-dimensional or two-dimensional orientated topological manifold, and the curve or surface is defined on differential manifold homeomorphic to the control mesh with a potential function as its basis functions . this method is an extension of nurbs, which efficiently overcomes the limitations of nurbs
廣義有理參數(shù)曲線曲面定義在與控制網(wǎng)格拓?fù)渫叩奈⒎至餍紊?，以高度一般的勢函?shù)為基函數(shù)，其控制網(wǎng)格可以是任意的一維拓?fù)淞餍魏投S可定向拓?fù)淞餍巍?/li> - subdivision surface can express smooth surface through low resolution control mesh and subdivision rules . it has been widely used in recent years, for it not only solves some problems in computer graphics, such as arbitrary topology and compatibility, but also retains several advantages of traditional nurbs, including the properties of localness and affine-invariance
由于細(xì)分曲面不但解決了計算機(jī)圖形學(xué)中遇到的任意拓?fù)浜鸵恢滦员硎締栴}，而且還保留了傳統(tǒng)nurbs曲面表示所具有的局部性，仿射不變性等良好性質(zhì)，因而近年來得到廣泛的應(yīng)用。 - the general idea behind the second one is approximation . the control mesh is subdivided until the error between the control vertices and corresponding subdivision surface is less than a given threshold . then the vertices substitute those points on the surface approximately . the last step is to calculate offset point for every vertex and connect them to form an offset surface
第二種算法采用逼近思想，首先通過對控制網(wǎng)格進(jìn)行細(xì)分，當(dāng)控制頂點(diǎn)和細(xì)分曲面的距離滿足一定誤差要求時，近似用控制頂點(diǎn)代替細(xì)分曲面上的點(diǎn)，然后對各個頂點(diǎn)分別求等距點(diǎn)。 - its properties and design method is discussed in chapter 4 . for control meshes with arbitrary topology, we present a universal method in chapter 5 to construct parametric curves and surfaces . generalized rational parametric surface can be controlled precisely and flexible, and it is easy to model local features and 3d primitives
然后，在第五章中，我們將控制網(wǎng)格進(jìn)一步推廣到任意可定向二維拓?fù)淞餍?，提出了一個通用的方法將控制網(wǎng)格映射到與之拓?fù)渫叩奈⒎至餍紊?，統(tǒng)一了廣義有理參數(shù)曲線曲面的構(gòu)造過程。