切割图片文件，很有用

B样条源程序，vc编写-source of the B-spline, vc prepared

This is a plugin script for Go-ogle"s free 3D design program Sketchup. The free version of Sketchup has limited file export options and many CAM programs will not recognise the native Sketchup (SKP) file format. This plugin allows you to export your Sketchup model as a DXF or STL files readable by most CAM and 3D printer software.Using the pluginAfter copying this file, start Sketchup and you should now have an extra menu option (Export to DXF or STL) in the Sketchup Tools menu.There are five export options:STL  triangles. Use this for Makerbot or Reprap style 3D printersDXF polyface mesh. This will give the most faithful reproduction of your original Sketchup model.DXF polylines: exports the outlines of each face as a polyline, sometimes useful for CAM toolpaths.DXF triangular mesh: breaks all the faces up into trianglesDXF lines. This

用VB编出的可以使窗体和图片透明-VB series can make out the forms and pictures transparent

3D图形学三维变换程序，很有用的哦，在VC++下编译通过。-3D graphics 3D transformation process, a very useful oh, the VC compile.

中点画圆，直线，bresenham画圆以及直线-midpoint Circle, Line, Circle and straight bresenham

很好的地图编辑器，适用于J2ME的开发，希望大家支持-good map editor, J2ME applicable to the development, we hope that the support

楼宇供电的设计图值得cad绘制的，每层布线，线路柜子排放都有-Power supply design of buildings should be drawn cad, each wiring, cabinets emission lines have

基于粒子系统模拟飘扬的旗帜-particle system simulation based on the fluttering banner

水印实现工具之二 stirmarkbenchmark-watermarking tools to achieve two stirmarkbenchmark

vrml交互实例。 简单的台灯，可以任意转动，开灯关灯等的交互，门的开关，颜色变换等-vrml interactive examples