一个可以实现四点扭曲的AS3.0类，任意图片都可以。-A four-point distortion can be achieved AS3.0 class, any picture can be.

flash 三维算法 图片翻动，图片四个角各有一点，拖动他们会以三维效果展示，这个算法非常巧妙，,three-dimensional picture flash flip algorithm, four corners of each picture that they will drag the effect of three-dimensional display, the algorithm is very cleverly

AS3中的skew类, 能将举行转换为梯形-an AS3.0 class that can converts rectangle to echelon in flash

skew detection technique for scanned image

这个插件能够让你在所有兼容CSS3的浏览器包括（IE）中应用2D转换效果。效果包括：旋转、按比例缩放、歪斜等。支持的浏览器有： Firefox3.5+、Safari3.1+、Chrome、Opera10.5+和IE 5.5+。-This plug-in allows you to 2D transition effects applied in all compatible CSS3 browser (IE). Effects including: rotation, scaling, skew