The system uses three structural designs which the contact surface and the service logic separates, the page demonstrated hands over by the JSP control, the service logic seal in JavaBean, enhanced the system security, the maintainability, has entru
//两点间距离 function getDist(px1, py1, px2, py2) { var vx=px2-px1; var vy=py2-py1; var hyp=Math.sqrt(Math.pow(vx,2)+Math.pow(vy,2)); return hyp; } var long:Number=getDist(0,0,100,100) trace(long)
//两点间角度 function getAngle(px1, py1, px2, py2) { var vx=px2-px1; var vy=py2-py1; var hyp=Math.sqrt(Math.pow(vx,2)+Math.pow(vy,2)); var rad=Math.acos(vx/hyp); var deg = 180/(Math.PI / rad); //得到了一个角度“rad”,不过是以弧度为单位的 //把它转换成角度 if (vy<0) { deg=(-deg)
'源代码 Private Declare Function GetDC Lib "user32" (ByVal hwnd As Long) As Long 'GetDC()功能是获取指定窗体的设备场景的句柄(hDC),用参数0则可以获取整个屏幕的场景句柄 Private Declare Function GetPixel Lib "gdi32" (ByVal hdc As Long, ByVal x As Long, ByVal y As Long) As Long 'GetPixel用于取得
摘要:VB源码,图形处理,VB恶搞程序,屏幕抖动 再分享一个Vb恶搞程序,屏幕抖动下雪,下雪API声明(摘录): GetDC()功能是获取指定窗体的设备场景的句柄(hDC),用参数0则可以获取整个屏幕的场景句柄 GetPixel用于取得场景(这里是整个屏幕)中某点的颜色值 释放由GetDC()获取的设备场景句柄,否则可能造成系统锁死 定义“区域”数据结构,但实际上并没有用到,因为仅需在函数InvalidateRect中传递一个空的RECT参数 Dim rect1 As
再分享一个Vb恶搞程序,屏幕抖动下雪,下雪API声明(摘录): GetDC()功能是获取指定窗体的设备场景的句柄(hDC),用参数0则可以获取整个屏幕的场景句柄 GetPixel用于取得场景(这里是整个屏幕)中某点的颜色值 释放由GetDC()获取的设备场景句柄,否则可能造成系统锁死 定义“区域”数据结构,但实际上并没有用到,因为仅需在函数InvalidateRect中传递一个空的RECT参数 Dim rect1 As RECT Private Const ScrnWi