pig_test

这是用open cascade来实现绘制简单的B样条曲线和样条曲面的程序。可以用来对open cascade的入门学习。(This is used to achieve open cascade easy mapping of B-spline curves and spline surfaces procedures. Can be used to open cascade of study entry.)

水波纹 3d 采用mesh方法，通过定点z值的不用来模拟水波纹的效果(wave ripper)

网格简化程序基于3D三角网格简化，代码简单实用，而且非常有效的节省时间(meshsimplification is a C++ library and set of utilities for input, output, and basic manipulation of 3D triangle meshes. The goals of the code are ease of use and efficiency, possibly at the expense of some generality.)

说明：  基于函数的曲线曲面绘制，以及beziar曲线曲面的绘制(Drawing curves and surfaces based on function, and the drawing of curves and surfaces beziar)

可以形象的看出图形的三维随距离的变化以及多方面的作用距离等一系列可视化应用(A series of visual applications can be visualized to see the three-dimensional changes of the graph with the distance and the distance of various aspects.)

VTK里面的对点云进行降采样的程序，可以直接使用。(VTK point cloud inside the down-sampling procedure can be used directly.)

OpenDwg的DRXSDK开发包，是DRX程序的二次开发包，有加强使用DRX的CAD用户可以下载(OpenDwg the DRXSDK development kit is the secondary development of DRX procedure package, enhancing the use of DRX have the CAD users can download)

说明：  地球 水星 月球 及其它行星 相互运动的3D图(Earth s moon and other planets Mercury mutual movement 3D map)

三维均匀介质的高阶交错网格弹性波方程数值模拟（未加PML吸收边界条件），模拟结果以切边形式显示(Numerical simulation of three-dimensional homogeneous medium of high-order staggered elastic wave equation (not PML absorbing boundary conditions), the simulation results are displayed in the form of trimming)

一个VRML的示例，通过鼠标点击可以使场景内的灯管发光(An example of a VRML through mouse clicks can make a scene inside the lamp light)