coorTrans

C# master source for drawing board. Use to draw vector base image on winform.

GIS专业入门必修课-多边形左转算法，首先在屏幕上点取点，后连接三角形，最后自动形成多边形。(GIS professional entry courses- turn left polygon algorithm, the first check point on the screen points, after connecting the triangle, and finally form a polygon automatically.)

说明：  移植到单片机平台可通过串口shell指令的形式进行指令操作(Porting to MCU platform can operate instructions in the form of serial shell instructions.)

ASP.NET技术，C#15个常用算法，展现CSharp设计模式。(ASP.NET technology, C# 15 commonly used algorithm to show CSharp design patterns.)

config.c file from win2000 event log sources.

这是一个基于RTKLIB的核心程序RtkPos移植改造的高精度GNSS数据处理程序。精密单点定位结果与IGS已知坐标相差几个毫米，GNSS RTK基线解算结果与商用软件的基线解算结果差异毫米。计算结果坐标序列文件需要自己使用 RtkPlot.exe绘图。有兴趣的同学可以移植成多文档或单文档程序，自己绘图展示。

是一个scrollveiw 的很好例子，里面还有Coblist 例子。(Is a good example of a scrollveiw)

基于stm32的IE2-512光电编码器初始化及计数功能，在智能车运动时可实现测距，测速，并通过PID进行反馈(Based IE2-512 photoelectric encoder initialization and counting functions stm32 in motion can be achieved when the smart car distance, speed, and through PID feedback)

说明：  用C++实现fft运算，经验证与matlab计算结果一致(A program in C Plus to realize Fast Fourier Transform,the results are consistent with calculation results by MATLAB.)

qt中提供了QGphicsView，QGraphicsScene，QGraphicsItem，QGraphicsPixmapItem是QGraphicsItem的子类 分辨创建它们的实例：view，scene，item，然后通过各自的方法scene->addItem(item);view->setScene(scene);就可以达到类似下图的效果，想要进一步定制，则要继承QGraphicsItem或QGraphicsPixmapItem，然后重写paint()、boundingRect()等方法，此外如果还想要获取鼠标事件，重写mousePressEvent等事件就好了，注意，一旦重写了mousePressEvent方法，就以为了qt不会再自动处理item的任何press事件了，可以在你重写的mousePressEvent方法中最后添加QGraphicsItem::mousePressEvent(event);解决这个问题，就是说你获取到了鼠标事件，但是依然让qt处理这个鼠标事件。(QGphics View, QGraphics Scene, QGraphics Item and QGraphics PixmapItem are provided in qt. They are subclasses of QGraphics Item. Resolve the instances of creating them: view, scene, item, and then use their respective methods scene - > addItem (item); view - > setScene (scene); you can achieve the effect similar to the figure below. If you want to further customize, you need to inherit QGraphics Item or QGraphics Pixmap Item, and then rewrite paint (), boundingRect () and other methods, and if you want to do so. If you want to get mouse events, rewrite events like mousePressEvent. Note that once you rewrite the mousePressEvent method, you think that QT will no longer automatically handle any press events of item. You can finally add QGraphics Item:: mousePressEvent (event) to your rewritten mousePressEvent method to solve this problem. That is, you get the mouse event, but still let QT handle the mouse event.)