Important: The information in this document is obsolete and should not be used for new development.
SubPtTo subtract the coordinates of one point from another, you can use the
PROCEDURE SubPt (srcPt:\xDDPoint; VAR dstPt:\xDDPoint);
- A point, the coordinates of which are to be subtracted from those specified in the
- On input: a point, from whose coordinates are to be subtracted those specified in the
srcPtparameter. Upon completion: the result of subtracting the coordinates of the points in the
srcPtparameter from the coordinates of the points in the
SubPtprocedure subtracts the coordinates of the point specified in the
srcPtparameter from the coordinates of the point specified in the
dstPtparameter, and returns the result in the
To get the results of coordinate subtraction returned as a function result, you can instead use the
DeltaPointfunction. Note, however, that the parameters in these two routines are reversed.