/// <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;
}
ICoordinate[] coord0 = line0.Coordinates;
ICoordinate[] coord1 = line1.Coordinates;
// brute force approach!
for (int i = 0; i < coord0.Length - 1; i++)
{
for (int j = 0; j < coord1.Length - 1; j++)
{
double dist = CGAlgorithms.DistanceLineLine(
coord0[i], coord0[i + 1],
coord1[j], coord1[j + 1]);
if (dist < minDistance)
{
minDistance = dist;
LineSegment seg0 = new LineSegment(coord0[i], coord0[i + 1]);
LineSegment seg1 = new LineSegment(coord1[j], coord1[j + 1]);
ICoordinate[] closestPt = seg0.ClosestPoints(seg1);
locGeom[0] = new GeometryLocation(line0, i, closestPt[0]);
locGeom[1] = new GeometryLocation(line1, j, closestPt[1]);
}
if (minDistance <= terminateDistance)
{
return;
}
}
}
}
/// <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 (int i = 0; i < coord0.Length - 1; i++)
{
for (int j = 0; j < coord1.Length - 1; j++)
{
double dist = DistanceComputer.SegmentToSegment(
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;
}
}
}
}
private void UpdateNearestLocationsLineLine(int i, Coordinate p0, Coordinate p1, FacetSequence facetSeq, int j,
Coordinate q0, Coordinate q1, GeometryLocation[] locs)
{
var seg0 = new LineSegment(p0, p1);
var seg1 = new LineSegment(q0, q1);
var closestPt = seg0.ClosestPoints(seg1);
locs[0] = new GeometryLocation(_geom, i, closestPt[0].Copy());
locs[1] = new GeometryLocation(facetSeq._geom, j, closestPt[1].Copy());
}
/// <summary>
///
/// </summary>
/// <param name="line0"></param>
/// <param name="line1"></param>
/// <param name="locGeom"></param>
private void ComputeMinDistance(LineString line0, LineString line1, GeometryLocation[] locGeom)
{
if (line0.EnvelopeInternal.Distance(line1.EnvelopeInternal) > _minDistance)
{
return;
}
var coord0 = line0.Coordinates;
var coord1 = line1.Coordinates;
// brute force approach!
for (int i = 0; i < coord0.Length - 1; i++)
{
// short-circuit if line segment is far from line
var segEnv0 = new Envelope(coord0[i], coord0[i + 1]);
if (segEnv0.Distance(line1.EnvelopeInternal) > _minDistance)
{
continue;
}
for (int j = 0; j < coord1.Length - 1; j++)
{
// short-circuit if line segments are far apart
var segEnv1 = new Envelope(coord1[j], coord1[j + 1]);
if (segEnv0.Distance(segEnv1) > _minDistance)
{
continue;
}
double dist = DistanceComputer.SegmentToSegment(
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 ComputeMinDistance(LineString line0, LineString line1, DistanceLocation[] locGeom)
{
if (line0.Bounds.Distance(line1.Bounds) > minDistance)
{
return;
}
ICoordinateList coord0 = line0.Coordinates;
ICoordinateList coord1 = line1.Coordinates;
// brute force approach!
int nCount0 = coord0.Count;
int nCount1 = coord1.Count;
for (int i = 0; i < nCount0 - 1; i++)
{
for (int j = 0; j < nCount1 - 1; j++)
{
double dist = CGAlgorithms.DistanceLineLine(coord0[i],
coord0[i + 1], coord1[j], coord1[j + 1]);
if (dist < minDistance)
{
minDistance = dist;
LineSegment seg0 =
new LineSegment(m_objFactory, coord0[i], coord0[i + 1]);
LineSegment seg1 =
new LineSegment(m_objFactory, coord1[j], coord1[j + 1]);
Coordinate[] closestPt = seg0.ClosestPoints(seg1);
locGeom[0] = new DistanceLocation(line0, i, closestPt[0]);
locGeom[1] = new DistanceLocation(line1, j, closestPt[1]);
}
if (minDistance <= terminateDistance)
{
return;
}
}
}
}
/// <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;
IList<Coordinate> coord0 = line0.Coordinates;
IList<Coordinate> coord1 = line1.Coordinates;
// brute force approach!
for (int i = 0; i < coord0.Count - 1; i++)
{
for (int j = 0; j < coord1.Count - 1; j++)
{
double dist = CgAlgorithms.DistanceLineLine(
coord0[i], coord0[i + 1],
coord1[j], coord1[j + 1]);
if (dist < _minDistance)
{
_minDistance = dist;
LineSegment seg0 = new LineSegment(coord0[i], coord0[i + 1]);
LineSegment seg1 = new LineSegment(coord1[j], coord1[j + 1]);
Coordinate[] closestPt = seg0.ClosestPoints(seg1);
locGeom[0] = new GeometryLocation(line0, i, new Coordinate(closestPt[0]));
locGeom[1] = new GeometryLocation(line1, j, new Coordinate(closestPt[1]));
}
if (_minDistance <= _terminateDistance) return;
}
}
}
