This sample demonstrates the use of the projection objects ProjCoordSys and GeoCoordSys, and the
CoordinateSystem property of the MapLayer object an...
解决时钟问题,acm竞赛题
A weird clock marked from 0 to 59 has only a minute hand. It won t move until a special coin is thrown into its box. There are differen...
Displaying large amounts of technical data in a chart can be a frustrating task. You can find tons of charting controls with fancy effects and useless...
Rotating shafts experience a an elliptical motion called whirl. It is important to decompose this motion into a forward and backward whil orbits. The ...