window screen and coordinate conversion

本文及其附带源码利用GID+ Bitmap实现了将一张图片分解为多张指定尺寸的图片，以及将多张图片合并为一张。-This article and accompanying source code to use the GID+ Bitmap to achieve a picture will be divided into more than the specified size of image, as well as multiple pictures into one.

OpenGL高级编程与可视化系统开发（高级编程篇）的随书源码-4，学习OpenGL的好东西-OpenGL Programming and Advanced Visualization System (Advanced Programming Part 1) the source-4 with books, learning the good stuff OpenGL -OpenGL high-level programming and visualization systems development (high-level programming chapter)-4 of the source with the book, learning OpenGL good things-OpenGL Programming and Advanced Visualization System (Advanced Programming Part 1) the source-4 with books, learning the good stuff OpenGL

vc++的动画程序，非常棒-vc++ the animation process, great

JPEG的6A版本的源代码-6A JPEG version of the source code

这也是老师留的作业，一个间的画笔画刷操作程序，-This is the teacher to stay the operation of a painting brush strokes operating procedures,

模拟海量小球，并且运动 -a large number of balls moving

抢答器的电路图,随便传下，只为需要，随便看看，仅供参考。-qiangdaqi de dianlutu suibian chuan xia

布料模拟的程序，参考较多近期论文，实现的模型基于弹簧――质点模型，实现效果不错-cloth simulation procedures, more recent reference papers, the model based on spring-- particle model, achieving good results

工具：QT4  C++  Sql 实现功能：具有创建数据库文件(.db文件)、保存记录、遍历、删除、查询、修改功能 代码运行方式 1.QT4运行这个程序 2.点击“创建/打开数据”即可创建或打开相应的.db数据库.

fft变换，采用标准c处理-fft transform, the use of standard treatment c