/// <summary>
///
/// </summary>
/// <param name="line0"></param>
/// <param name="line1"></param>
/// <param name="locGeom"></param>
private void ComputeMinDistance(ILineString line0, ILineString line1, GeometryLocation[] locGeom)
{
if (line0.EnvelopeInternal.Distance(line1.EnvelopeInternal) > _minDistance)
return;
var coord0 = line0.Coordinates;
var coord1 = line1.Coordinates;
// brute force approach!
for (var i = 0; i < coord0.Length - 1; i++)
{
for (var j = 0; j < coord1.Length - 1; j++)
{
var dist = CGAlgorithms.DistanceLineLine(
coord0[i], coord0[i + 1],
coord1[j], coord1[j + 1]);
if (dist < _minDistance)
{
_minDistance = dist;
var seg0 = new LineSegment(coord0[i], coord0[i + 1]);
var seg1 = new LineSegment(coord1[j], coord1[j + 1]);
var closestPt = seg0.ClosestPoints(seg1);
locGeom[0] = new GeometryLocation(line0, i, closestPt[0]);
locGeom[1] = new GeometryLocation(line1, j, closestPt[1]);
}
if (_minDistance <= _terminateDistance) return;
}
}
}
private void ComputeMinDistanceLineLine(ILineString line0, ILineString line1,
bool flip)
{
var coord0 = line0.Coordinates;
var coord1 = line1.Coordinates;
// brute force approach!
for (var i = 0; i < coord0.Length - 1; i++)
{
for (int j = 0; j < coord1.Length - 1; j++)
{
var dist = CGAlgorithms3D.DistanceSegmentSegment(coord0[i],
coord0[i + 1], coord1[j], coord1[j + 1]);
if (dist < _minDistance)
{
_minDistance = dist;
// TODO: compute closest pts in 3D
var seg0 = new LineSegment(coord0[i], coord0[i + 1]);
var seg1 = new LineSegment(coord1[j], coord1[j + 1]);
var closestPt = seg0.ClosestPoints(seg1);
UpdateDistance(dist,
new GeometryLocation(line0, i, closestPt[0]),
new GeometryLocation(line1, j, closestPt[1]),
flip
);
}
if (_isDone) return;
}
}
}
