bianweichilun

这是一个图形学应用的小程序，可以实现简单的填充功能。(This is a small graphics application procedures, can be filled with simple functions.)

本文以电场的三大定理、连续超张弛迭代算法、拉格朗日插值算法等原理知识作为理论基础，以 C 语言为编程工具，将由根据以上物理和数学原理所推导出来的模型转化为可以计算像管内电势的 CAD 程序软件。所编写的程序可以在给定像管参数和电极电位的情况下，计算圆柱形像管内任意一点的电位大小，并绘制出像管内的等势线；拉格朗日插值得到对称轴上任一点的电位值。 (In this paper, we base on the three theorems of the electric field, continuous ultra-relaxation iterative algorithm, and Lagrange interpolation algorithm. We use the C language as a programming tools, and transform the model derived above into a CAD software to calculate the electric potential in the image tube. In case the image tube parameters and electrode potential are known, the program written can get the potential of every point in the image tube, and plot equipotential lines inside the image tube. It can also get the potential of every point on the axis of symmetry by Lagrange interpolation. )

Visio 2010图形设计实战技巧精粹，让读者一目了然，更好地掌握Visio 2010。(Visio 2010 graphic design essence of combat skills, to give readers a glance, a better grasp of Visio 2010.)

Matlab绘图教程(大量实例PPT)，可供初学者绘图使用，简单方便。(Matlab graphics tutorials (large number of examples PPT), drawing for beginners to use, simple and convenient.)

利用此代码可画龙曲线，此代码仅供参考，希望大家学习并改进，(use of this code can be a dragon painted curves, the code for reference purposes only, we hope to learn and improve, thank you)

信号频谱分析 1. 观测已知方波信号、正弦波信号的频谱 分析频率为4KHz、8KHz的占空比为50 的方波信号、正弦波信号的频谱。记录所得频谱图。 观测实时模拟信号（语音）的频谱 用音频设备采集一段语音，将语音存为.wav格式。对wav文件作分段傅里叶变换分析。语音是分音节的，应把它分段分析，而且实际运用中的数字信号处理的FFT的点数是有限的，一般只能达到千点。用傅里叶反变换IFFT，从频域恢复信号。画出频谱图和语音波形图(Signal spectrum analysis 1. Observing a known square-wave signal, sine wave signal frequency spectrum analysis 4KHz, 8KHz for the 50 duty cycle square wave signal, sine wave signal frequency spectrum. The recorded frequency spectrum. Observing real-time analog signal (voice) of the spectrum collected with the audio devices section of voice, voice saved as. Wav format. Wav file of the sub-Fourier transform analysis to make. Speech is divided into syllables, it should be sub-analysis, and practical application of digital signal processing of the FFT points is limited, generally only reach 1000 points. Fourier inverse transform IFFT, to restore the signal from the frequency domain. Draw maps and voice waveform spectrum)

graphic game developing source code

说明：  图纸保存格式为dxf,此开发包能识别dxf文件的各种图形和尺寸(Drawing feature recognition development kit)

说明：  B样条曲线和三次B样条插值的相关知识不完全总结(B-spline curves and three B-spline interpolation of the relevant knowledge does not fully sum up)

常用光瞳函数，矩形函数、圆域函数、正六边形函数、三角形函数的绘制(Commonly used pupil function, including rectangle function, circle function, hexagon function, triangle function)