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标题: 直线与直纹面的交点怎么不能求呢? [打印本页]

作者: pollo9071    时间: 2005-1-26 19:10
标题: 直线与直纹面的交点怎么不能求呢?
用GRIP编了下面这一段程序:
ENTITY/ln,face
NUMBER/p(3)
      IDENT/'Pick faces',face,rsp
      JUMP/l80:,trm:,,,rsp
l80:
      IDENT/'Pick line',ln,rsp
      JUMP/l50:,trm:,,,rsp
l50:
POINT/YSMALL,INTOF,face,ln
trm:
    HALT
怎么一运行就出现错误呢?
如果先选线,后选面就出现下面的错误提示:
Error 1545116 at line9 in try5
Invalid object type specified for reference point.
如果先选面,后选线就出现如下的错误提示:
Error 1545369 at line 9 in try5
Invalid cruve object.
哪位给予解释一下为什么。谢谢!




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