绘制

We use curved texels to represent clusters of long hair, and the curved texels are in turn discretized into connected straight texels. Through making smooth effect of connected texels, a special rendering strategy is provided to generate realistic longhair images.

我们采用弯曲纹元构造长发束，然后将这些弯曲纹元离散成便于绘制的连接直纹元，并提出一个特殊的绘制算法使得连接的直纹元具有平滑的光照效果，绘制出具有较高真实感的长发图像。

Finally, PNV had been mapped according to Boolean discrete methods to connect climate submodel and vegetation submodel by GIS. PNV map first represented the spatial distribution of all vegetation types of 4 physiognomic levels in Taiwan, also integrated the diverse comments of altitudinal vegetation zones and geographical climatic regions in the past. Besides, the scattered ranges of 36 dominant trees in the moisture-thermal regime and climatic zone had been drawn via coordinating 585 plot-data with MWI and WDI.

为达绘制潜在植群图之最终目标，本研究以MWI及WDI之网格图层代表气候亚模型，以潜在植群形相分类方案之各阶类型代表植群亚模型，藉由布林分离法联系此2亚模型之关系，建构气候–植群分类模型，并以地理资讯系统绘制出包含群系纲、群系亚纲、群系组、群系之潜在植群图，首次完整呈现台湾各阶植群类型之空间分布，合理说明了山地植群带分化、北部植群下降及西南部冬季乾旱等现象，亦整合过去各种有关垂直性山地植群带状分化与水平性地理气候区划分的复杂意见；另外，本研究将585个样区林木座标标定於MWI及WDI，绘制36种林木於水热境制及热量气候带之分布范围。

And the polar angle and the polar radius was represented into AutoCAD polar coordinate, the involute was drawn through the spline linear tool. And then, a section of the involute was intercepted with the diameters of the point circle and the root circle, used it as the tooth face of the spline. The involute tooth thickness was drawn using the diameter of the divided circle and the tooth-form was drawn through rotating, mirroring image and cutting.

根据DIN 3960渐开线花键的坐标值，用EXCEL函数功能计算出不同压力角下渐开线的极角和极半径，表示成AutoCAD极坐标并通过样条线工具绘制出渐开线，再用齿顶圆和齿根圆直径截取一段渐开线作为为花键齿面，并用分度圆直径绘制出渐开线齿剖面，经镜像和裁剪便可绘制出渐开线齿形。

Different from computerized "sailcloth printing" services, customized-portrait painting is hand-made by experienced painters. Such painting, is not made by machine, but 100% made by hands, and fully painted following customers' photo.

不同于自动化和计算机化的"帆布印刷品"服务，客人的油画画像将是由多年肖像油画经验的画家纯手工绘制制作，这种手工油画，不是机器生产的，油画完全是100%纯手工绘制，完全按照客人的照片绘制。

In viewing of accelerating animation rendering technique, this paper includes three parts of the author's work. First, the paper summaries an accelerating rendering method using frame-to-frame coherence. The paper also introduces an accelerating algorithm of span scanline tracing animation rendering as one implementation of the method.

在加速动画绘制方面，本文从以下几个方面介绍了作者的工作：第一，对利用动画帧间相关性加速动画绘制的方法作了讨论，总结了一种基于帧相关性加速绘制算法模型，并以跨距扫描线跟踪算法为例介绍了模型的使用。

It is laborious to draw stereogram by hand,and especially difficult to draw stereogram of body with complicated structure.

针对手工绘制体视图工作量大，而且不适宜绘制复杂形体体视图的问题，将体视投影理论和三维几何造型结合起来，利用计算机绘制体视图。

The DTM for automatic-design of thruway was put forward by Prof. Miller in 1956. Since then , the DEM is used for design of various circuit diagram, and for account of area, cubage, gradient of various project, and for estimating visibility from point to point; for rendering contour, grade-graph, aspect-graph, solid model; for making orthographic image and repair map in the Topography; for assistant data to classify in the Remote Sensing; as basic data in the GIS, for analysis and layout actuality of using soil, for disaster prediction; for navigation, guiding missile in the military affairs.

美国麻省理工学院Miller教授为了高速公路的自动设计于1956年提出了数字地面模型的概念后，DEM被用于各种线路的设计及各种工程的面积、体积、坡度的计算，任意两点间可视性判断及绘制任意断面图；在测绘中被用于绘制等高线、坡度坡向图、立体透视图，制作正射影像图与地图的修测；在遥感中可作为分类的辅助数据；它是地理信息系统的基础数据，可用于土地利用现状的分析、合理规划及洪水险情预报等；在军事上可用于导航及导弹制导；在工业上可利用数字表面模型DSM或数字物体模型绘制出表面结构复杂的物体的形状[2]。

On the PC of the Windows Operation system, the system of 3D reconstruction has been designed by Visual C++ programming language. It includes 3D data import, display of the original and pre-process CT images, acquirement of the data showed vividly on the screen by the improved algorithms about MC and Ray Casting and mutual observation through magnification or demagnification and circumvolving.

论文以此为基础，在PC 上，基于Windows 操作系统，利用Visual C++开发工具，运用计算机图形学和图像处理技术，实现了三维体数据的输入；二维CT 图像数据的显示和预处理；通过阈值对CT 数据进行了分割；运用改进后的算法分别对分割后的数据进行了面绘制和体绘制；对绘制后的数据在屏幕上形象逼真地进行了显示；对显示的数据进行交互式的观察，如旋转、放大、缩小。

In order to remedy this kind of shortage, this paper presents a quick volume rendering method, for the finite element data field of dam seismic response, choices the slicing direction relying on the element surface which normal line has the smallest included angle with the view direction, slices elements to many quadrilaterals, blends the colors of these quadrilaterals by using OpenGL blending technology, and then superimposes all elements one by one.

为了弥补传统体绘制静止画面不能明确判断场值集中部位的不足，提出一种快速体绘制算法，针对大坝地震反应有限元计算数据场，根据每个单元法线与视线夹角最小的表面来选择剖切方向，将单元剖切成多个四边形面后，对单元的绘制顺序进行合理排序，利用OpenGL图形库函数进行颜色融合，再将各个单元依次叠加，从而生成了三维数据场的体绘制图。

The compressed point sample can be transferred progressively after serialization. Secondly, the thesis purposes another algorithm to render the compressed point data which can render the model without reconstructing the full structure of KD-Tree. The algorithm uses the View-Frustum Culling, Back-Face Culling and Level of Detail method, and boosts the speed and precision on rendering.

其次，提出了一个在此压缩算法上的模型快速绘制算法，该算法可以直接使用序列化后数据并不需要恢复完整的KD-树结构即可进行绘制，该算法使用了视锥裁减，背向面裁减，层次细节等方法，极大提高了绘制的速度和精度。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。