最后，介绍了圆形和椭圆形窗口的直线裁剪算法。
Finally line clipping algorithms against circles and ellipses are given.
首先介绍了六角网格坐标系及圆形窗口与待裁剪线段的关系。
Hexagonal grid coordinate and the relation of the circle window and the line to be clipped are demonstrated.
现有的圆形窗口对线段的裁剪算法由于包含复杂的计算而难于提高速度。
It is hard to speed up the line clipping for circular Windows due to the complex calculation adopted in the current algorithms.
黄色油漆已脱落，建筑是固定在一端的一座三层圆形窗口，联想巨大的车灯。
Its yellow paint now peeling, the building is anchored at one end by a three-story circular window that conjures an enormous headlight.
他们突出和扩大砖线来促进狭缝光的产生，并由一个大的圆形窗口来进一步夸张表现一个整体。
They extrude and extend themselves out of the brick line to facilitate a slit of light and express as a mass that is further exaggerated by a large circular window.
通过对直线段相对圆的各种位置关系作深入的研究，提出了一种简单而迅速的圆形窗口裁剪算法。
Based on profound study of various position relations between a line segment and a circle, a simple and rapid clipping algorithm for circular window is presented in this paper.
对于实际测量数据，节理迹线中点并非均匀分布，选择恰当的圆形窗口位置和半径，才能得出合理的结果。
The distribution of the trace midpoint is not uniform, and it is far from being insignificant for reasonable results that position and radius of circular sample window are selected appropriately.
为了提高匹配速度，介绍了一种基于SIFT的简化算法(SSIFT)，采用基于圆形窗口的12维向量有效地表示一个特征点。
A simplified algorithm based on SIFT (SSIFT) is developed to express a feature point with only 12 dimensions based on a circular window to improve the efficiency of matching.
在相关文献提出的基于矩形窗口裁剪的圆形窗口裁剪算法的基础上，通过判断圆形窗口与待裁线段的位置关系，提出一个免解二次方程的圆形窗口裁剪算法。
Through judging the relation of the position between the circle clip window and the line to be clipped, a new line-clipping algorithm is given based on the correlative literatures.
图形的裁剪与覆盖是计算机图形学中较为热点研究的问题，作者对此进行了深入的研究与实践，提出了较为理想的圆形窗口“裁剪与覆盖”的计算机辅助设计新算法。
Graphics clipping and covering is one of the key points in computer graphics field. After more study and practice, a new algorithm is give, which is for clipping and covering in circular window.
图形的裁剪与覆盖是计算机图形学中较为热点研究的问题，作者对此进行了深入的研究与实践，提出了较为理想的圆形窗口“裁剪与覆盖”的计算机辅助设计新算法。
Graphics clipping and covering is one of the key points in computer graphics field. Alter more study and practice. a new algorithm is give. which is for clipping and covering in circular window.
随后，主循环在每次循环时都检查事件、重置绘图状态、绘出圆形的“门户”窗口，然后以动画形式将其失真返回当前时帧。
Then, each pass of the main loop checks for events, resets the draw state, draws the circular "portal" windows, then animates their distortion back to the current time frame.
单击检查器窗口顶部的Profile选项卡，点击底部左侧的圆形记录图标来启动分析。
Click on the Profile TAB at the top of the inspector window and click the circle record icon in the bottom left to start profiling.
黑色离子镀不锈钢圆形表壳和标识，日期窗口和黑色表盘数字指标。
Black ion-plated stainless steel round case and black dial with logo, date window and numeral indices.
插图显示了各种各样的建筑风格的建筑，元素从传统的瓦屋顶到圆形显示窗口。
The illustrations show buildings of a wide variety of architectural styles, employing elements ranging from traditional tile roofs to rounded display Windows.
符合人机工程学原理的设计有圆形手把，手指架和大尺寸显示器窗口。
The ergonomic design features a rounded grip, finger rest, and a large display window.
在计算机图形学及CAD中，到目前为止所研究的裁剪窗口都是矩形或多边形的，而在实际应用中经常要用到圆形或椭圆形裁剪窗口。
In computer graphics and CAD, the clipping Windows researched up to now are all rectangular or polygonal. But in practice circular or elliptic clipping Windows are often used.
椭圆形房间的心情是优雅和节日，特别是当它在光通过环湾大窗口，在宽松的盆满钵满的沐浴。
The mood of the oval room is elegant and festive, especially when it is bathed in the light that pours in liberally through the large central bay window.
椭圆形房间的心情是优雅和节日，特别是当它在光通过环湾大窗口，在宽松的盆满钵满的沐浴。
The mood of the oval room is elegant and festive, especially when it is bathed in the light that pours in liberally through the large central bay window.
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