control mesh造句
例句与造句
- the model used to control mesh deforming is improved spring analogy with boundary improvement and torsional effect improvement
网格变形的物理模型采用改进的弹簧近似模型，改进措施包括边界修正和扭转效应修正。 - 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
第一种算法依据样条曲面等距原理，把对细分曲面的等距转化为其等距前后控制网格的对应关系。 - 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
细分曲面是基于网格的离散曲面造型新技术，它通过定义控制网格和细分规则来表示造型曲面。 - 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
在干涉检测中用了两种不同的算法，即快速检测法和详细检测法，快速检测法通过使用曲面的控制网格获得刀具的可行位置。 - 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细分曲面无法精确表示除抛物面外的常规二次曲面；在给定初始控制网格的情况下，难以调整所生成曲面的形状等。 - It's difficult to find control mesh in a sentence. 用control mesh造句挺难的
- 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
可以在保证所需细分质量前提下，使得表示细分曲面的控制网格上的几何元素的数量明显下降，从而为细分曲面的后续处理、存储、传输节约了大量的时间和空间。 - 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
对于具有简单拓扑结构，存在着一致的全局参数化的控制网格，我们将把控制网格直接映射到微分流形上，因此可以很容易地对曲面进行构造和控制。 - 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
对于具有简单拓扑结构，存在着一致的全局参数化的控制网格，我们将把控制网格直接映射到微分流形上，因此可以很容易地对曲面进行构造和控制。 - (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环节，本文提出了从三角网格模型获得loop细分曲面的控制网格，从而实现了任意拓扑密集网格的细分曲面重建算法。 - 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)在正常的曲面细分过程中，控制网格上几何元素(顶点、边、面)的数量是按照几何级数增加的，会产生庞大的冗余数据。 - 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
广义有理参数曲线曲面定义在与控制网格拓扑同胚的微分流形上，以高度一般的势函数为基函数，其控制网格可以是任意的一维拓扑流形和二维可定向拓扑流形。 - 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
广义有理参数曲线曲面定义在与控制网格拓扑同胚的微分流形上，以高度一般的势函数为基函数，其控制网格可以是任意的一维拓扑流形和二维可定向拓扑流形。 - 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
由于细分曲面不但解决了计算机图形学中遇到的任意拓扑和一致性表示问题，而且还保留了传统nurbs曲面表示所具有的局部性，仿射不变性等良好性质，因而近年来得到广泛的应用。 - 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
第二种算法采用逼近思想，首先通过对控制网格进行细分，当控制顶点和细分曲面的距离满足一定误差要求时，近似用控制顶点代替细分曲面上的点，然后对各个顶点分别求等距点。 - 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，我们将控制网格进一步推广到任意可定向二维拓扑流形，提出了一个通用的方法将控制网格映射到与之拓扑同胚的微分流形上，统一了广义有理参数曲线曲面的构造过程。