src/org/nutz/img/Images.java
public static BufferedImage clipScale(String srcPath,
                                          String taPath,
                                          int[] startPoint,
                                          int[] endPoint)
            throws IOException {
        File srcIm = Files.findFile(srcPath);
        if (null == srcIm)
            throw Lang.makeThrow("Fail to find image file '%s'!", srcPath);

        File taIm = Files.createFileIfNoExists(taPath);
        return clipScale(srcIm, taIm, startPoint, endPoint);
    }
public static BufferedImage clipScale(String srcPath,
                                          String taPath,
                                          int[] startPoint,
                                          int[] endPoint)
            throws IOException {
        File srcIm = Files.findFile(srcPath);
        if (null == srcIm)
            throw Lang.makeThrow("Fail to find image file '%s'!", srcPath);

        File taIm = Files.createFileIfNoExists(taPath);
        return clipScale(srcIm, taIm, startPoint, endPoint);
    }
根据给定的起始坐标点与结束坐标点来剪切一个图片，令其符合给定的尺寸，并将其保存成目标图像文件
<p>
图片格式支持 png | gif | jpg | bmp | wbmp

@param srcPath
源图像文件对象
@param taPath
目标图像文件对象
@param startPoint
起始坐标点，其值[x, y]为相对原图片左上角的坐标
@param endPoint
结束坐标点，其值[x, y]为相对原图片左上角的坐标
@return 被转换前的图像对象

@throws IOException
当读写文件失败时抛出