echo_simulation

对图像进行几何变换，如旋转，缩放，镜像，裁剪等。(Image geometric transformations such as rotation, scaling, mirroring, cropping and so on . )

分形图形的生成源程序，生成不同参数的Mandelbrot集和Julia集，对分形的初学者学习的好帮手。(fractal graphics generation source. Generation different parameters of the Mandelbrot set and Julia sets. Fractal of the beginners learn the good helper.)

实现对任意多边形的三角形凸分解。(To realize arbitrary triangle polygon convex decomposition.)

N 整形变量，输入参数，矩阵A的阶数 A[] 实型数组，输入、输出参数，输入是按列存放方阵A，计算结束时输出A的逆矩阵 B[] 实型数组，输入、输出参数，输入时按列存放实方阵B，计算结束时输出（A逆*B—）( Gauss Jordan elimination )

说明：  ATLAS致力于研究以观察为基础的技术从而提供可便携性能。目前它提供c和Fortran77接口。(The ATLAS (Automatically Tuned Linear Algebra Software) project is an ongoing research effort focusing on applying empirical techniques in order to provide portable performance. At present, it provides C and Fortran77 interfaces to a portably efficient BLAS implementation, as well as a few routines from LAPACK.)

光学图像的几何仿真，采用已有的光学图像作为参考，布置在传感器照射范围区域，然后根据卫星轨道、姿态等获得新的图像，该图像能够反映原始图像的几何特性(Optical image geometry simulation, using the existing optical image as a reference, arranged in the area illuminated area of ​ ​ the sensor, then the satellite orbit, attitude and so obtain a new image, the image can reflect the geometric properties of the original image)

用分形插值算法生成云和山--《分形算法于程序设计》光盘(using fractal interpolation algorithm for generating clouds and the mountains-- "fractal algorithm in the program design" CD)

说明：  用VB写的mondebroot集，鼠标选中区域可放大显示(VB wrote mondebroot set, the mouse can enlarge selected regional show)

三角形相互碰撞及物体运动模型虚拟现实碰撞检测算法(Spherical object model dynamic behaviors of virtual reality collision detection algorithm )

Grass文件夹下为分形草的程序源代码，程序运行后，只需要按空格键就可以随机产生不同的分形草图形(Grass folder for grass fractal source code, the program running, just a space bar can be different randomly generated fractal graphics grass)