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发表于 2003-12-22 11:52:00
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計算兩點的角度在幫助文件中有
Returns an angle in radians of a line defined by two endpoints
(angle pt1 pt2)
Arguments
pt1
An endpoint.
pt2
An endpoint.
Return Values
An angle, in radians.
The angle is measured from the X axis of the current construction plane, in radians, with angles increasing in the counterclockwise direction. If 3D points are supplied, they are projected onto the current construction plane.
Examples
Command: (angle '(1.0 1.0) '(1.0 4.0))
1.5708
Command: (angle '(5.0 1.33) '(2.4 1.33))
3.14159
See Also
The Angular Conversion topic in the AutoLISP Developer's Guide. |
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