
Geometry : 
Subject: Re: [geometry] distance and comparable_distance
From: jeffpoly (jfw1000_at_[hidden])
Date: 20121126 13:27:35
hello Barend,
Thanks for your reply, and soryy for delay to post the sample below is the
sampel program,
typedef model::d2::point_xy<double> point_2d;
typedef model::linestring<point_2d> linestring_2d;
point_2d lp;
lp = make<point_2d>(31.988994, 7.738198);
linestring_2d ls;
ls.push_back(make<point_2d>(32.0, 9.637687));
ls.push_back(make<point_2d>(32.0, 7.0));
ls.push_back(make<point_2d>(33.544565, 7.0));
ls.push_back(make<point_2d>(33.544565, 9.637687));
ls.push_back(make<point_2d>(32.0, 9.637687));
std::cout << "distance of " << dsv(lp)
<< " to line: " << distance(lp, ls) << std::endl;
std::cout << "comparable_distance of " << dsv(lp)
<< " to line: " << comparable_distance(lp, ls) << std::endl;
This gives the following results:
distance of (31.989, 7.7382) to line: 0.011006
comparable_distance of (31.989, 7.7382) to line: 0.011006
Thanks,
Jeff
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