Fine Uploader(http://fineuploader.com/)是一个实现 ajax 上传文件的 Javascript 组件. This project attempts to achieve a user-friendly file-uploading experience over the web. It's built as a Javascript plugin for developers looking to incorporate file-uploading int
1 /** 2 * Created by Wandergis on 2015/7/8. 3 * 提供了百度坐标(BD09).国测局坐标(火星坐标,GCJ02).和WGS84坐标系之间的转换 4 */ 5 //定义一些常量 6 var x_PI = 3.14159265358979324 * 3000.0 / 180.0; 7 var PI = 3.1415926535897932384626; 8 var a = 6378245.0; 9 var ee = 0.00669342162296594
在DXFReader中, 一般的多边形的面积计算绝对值 其中K表是顶点的数目,它们的坐标,用于在求和和, 所以用下面的代码就可以计算出一个封闭的多段线的区域: view source print? 01 Dim Vertex As Object 02 Dim Entity As Object 03 Dim k As Long 04 Dim i As Long 05 Dim Area As Single 06 07 With DXFReader1 08 09 For Each Entity In