对于第一个简单效果，将在视频流中的固定位置绘制一个阿尔法混合(半透明的)圆。
For our first simple effect, we will draw an alpha-blended (semitransparent) circle at a fixed position over the video stream. The first step is to add the drawing functions to the screen.c.
RolloverIcon实例将包装我们希望用图1中所示的图形效果绘制的初始图标。
The RolloverIcon instance is wrapping the original icon we want to paint with the graphics effect shown in Figure 1.
在实时绘制中，在性能上至少有3个目标：每秒有更多的帧、更高的分辨率、更多(比较好的真实感效果)的场景物体。
In the graphics rendering, we have at least 3 goals: more frames in one second, higher screen resolution and more scene objects with good third dimension effect.
本文提出一种改进的三角网绘图方法，并用于沉积相图的绘制，在实际应用中取得很好的效果。
An improved trigonometry method is proposed and used in sedimentary belt mapping, practical application shows satisfying effect.
该方法已成功应用于实际工程中，显示效果良好，并且具有通用性，可以应用于一 般的三维地形绘制。
The method has been successfully deployed in engineering and has achieved a good effect. Otherwise, the method also adapts to general terrain rendering.
景深效果能够增强计算机生成图像的真实感，因此关于这类效果的绘制已成为计算机图形学中的重要研究方向。
The depth-of-field effect can improve the realistic sense of a computer-generated image, and thus rendering of this effect has become one of the important research topics in computer graphics.
在绘制北京市平谷地区雨量等值线图过程中，应用张力样条函数算法光滑后的雨量等值线图达到了很好的效果。
The rainfall isoline smoothed by the tension spline function algorithm in the process of making rainfall isoline map of Beijing Pinggu District has much better effects.
在体绘制算法中，提出了基于体素的投影算法，将不透明度参数引入绘制过程，得到具有半透明效果的三维图像。
Based on the volume rendering algorithms, the dissertation presents Projection algorithm based on Voxel, in which the opacity parameter is introduced to achieve an 3d image with translucent effect.
在体绘制算法中，提出了基于体素的投影算法，将不透明度参数引入绘制过程，得到具有半透明效果的三维图像。
Based on the volume rendering algorithms, the dissertation presents Projection algorithm based on Voxel, in which the opacity parameter is introduced to achieve an 3d image with translucent effect.
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