[osg-users] Parameter "ratio" in osgUtil::LineSegmentIntersector::Intersection
Andreas Goebel
a-goebel at gmx.de
Tue Sep 30 00:22:06 PDT 2008
Hello,
I need to sort out intersections that are very close to each other. So I
took a look at the LineSegmentIntersector::Intersection definition:
bool operator < (const Intersection& rhs) const { return
ratio < rhs.ratio; }
typedef std::vector<unsigned int> IndexList;
typedef std::vector<double> RatioList;
double ratio;
and saw that there is a ratio-parameter for sorting.
What is that ratio-parameter expressing? May I assume that points which
are very close to each other do have a ratio that is very close?
I guess that the other direction is not true: Points with a close ratio
might be apart.
So what I would do if my assumptions are true is first to test if an
intersection has a close ratio to the intersection before in the list.
If this is true, then I will test the distance.
Regards,
Andreas
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