关于自定义对象捕捉模式方面问题
请问:AcdbCustomOSnapInfo类中 getOsnapInfo(<BR> AcDbEntity* pickedObject,<BR> int gsSelectionMark,<BR> const AcGePoint3d& pickPoint,<BR> const AcGePoint3d& lastPoint,<BR> const AcGeMatrix3d& viewXform,<BR> AcArray<AcGePoint3d>& snapPoints,<BR> AcArray<int>& geomIdsForPts,<BR> AcArray<AcGeCurve3d*>& snapCurves,<BR> AcArray<int>& geomIdsForLines)中,snapCurves参数为什么只能支持AcGeLine3d而不支持其他的曲线类呢?譬如:AcDbCirArc3d?
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