斜坡道矢量化中的斜网格怎么处理[img]file:///C:\Documents and Settings\Zyt\Application Data\Tencent\Users\497426373\QQ\WinTemp\RichOle\SNZ1BDYS[])$AAQR4A]N0@Q.jpg[/img],左下角没有起始点如何绘制图框,最后的校正点应该选择哪些?谢谢各位赐教了[img]file:///C:\Documents and Settings\Zyt\Application Data\Tencent\Users\497426373\QQ\WinTemp\RichOle\SNZ1BDYS[])$AAQR4A]N0@Q.jpg[/img]