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发表于 2004-6-13 17:16:00
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用transformby方法
或
Signature
RetVal = object.TranslateCoordinates(OriginalPoint, From, To, Disp[, OCSNormal])
Object
The object or objects this method applies to.
OriginalPoint
Variant (three-element array of doubles); input-only
The 3D WCS coordinates specifying the original coordinates to be translated. This parameter can be treated as a point or a displacement vector depending on the value of Disp.
From
AcCoordinateSystem enum; input-only
The coordinate system from which the point originates.
acWorld
acUCS
acOCS
acDisplayDCS
acPaperSpaceDCS
To
AcCoordinateSystem enum; input-only
The coordinate system to which the point will be converted.
acWorld
acUCS
acOCS
acDisplayDCS
acPaperSpaceDCS
Disp
Integer; input-only
A displacement vector flag.
TRUE: OriginalPoint is treated as a displacement vector.
FALSE: OriginalPoint is treated as a point.
OCSNormal
Variant (three-element array of doubles); input-only;optional
The normal for the OCS.
RetVal
Variant (three-element array of doubles)
The translated 3D coordinate.
Remarks
You cannot directly translate a coordinate from one OCS to another OCS. To do this, first translate the coordinate from one OCS to an intermediary coordinate system such as the WCS. Then translate that coordinate into the second OCS.
To translate a point on a or object from OCS to WCS:
1. Get the X and Y coordinates of the OCS point from the or property.
2. Get the Z coordinate of the OCS point from the property.
3. Get the Normal for the polyline from the property.
4. Call TranslateCoordinates using the X, Y, Z coordinates and the Normal.
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