polylinend.h File Reference

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Classes
class	PolyLineND< T >
	(Closed) sequence(s) of connected n-D coordinates. Undefined coordinates separate consecutive sequences. More...

Macros
#define	mUpdateMinDist(dist, idx, frac)
	Point-to-segment distance: More...

Macro Definition Documentation

mUpdateMinDist

#define mUpdateMinDist	(		dist,
			idx,
			frac
	)

Value:

    if ( dist<mindist ) \
    { \
        mindist = dist; \
        if ( segmentidxptr ) \
            *segmentidxptr = idx; \
        if ( fractionptr ) \
            *fractionptr = frac; \
    }

Point-to-segment distance:

         . pt
        /|\
       / | \
      a  h  b
     /   |   \

[idx] /_d__|____\ [idx+1] <-—c-—>