public void TestST3DClosestPoint()
{
using (var db = new PostGisTestDataConnection(TestDatabaseConnectionString))
{
const string PointWkt = "POINT(100 100 30)";
const string LineWkt = "LINESTRING (20 80 20, 98 190 1, 110 180 3, 50 75 1000)";
var point = db.Select(() => GeometryInput.STPointFromText(PointWkt));
var line = db.Select(() => GeometryInput.STLineFromText(LineWkt));
var point1 = db.Select(() => MeasurementFunctions.ST3DClosestPoint(line, point)) as NTSGS.Point;
var point2 = db.Select(() => MeasurementFunctions.STClosestPoint(line, point)) as NTSGS.Point;
Assert.AreEqual(54.6993798867619, point1.X, 1.0E-9);
Assert.AreEqual(128.935022917228, point1.Y, 1.0E-9);
Assert.AreEqual(11.5475869506606, point1.Z, 1.0E-9);
Assert.AreEqual(73.0769230769231, point2.X, 1.0E-9);
Assert.AreEqual(115.384615384615, point2.Y, 1.0E-9);
Assert.AreEqual(
54.6993798867619,
db.Select(() => MeasurementFunctions.ST3DClosestPoint(LineWkt, PointWkt).STX()).Value,
1.0E-9);
Assert.IsNull(db.Select(() => MeasurementFunctions.ST3DClosestPoint((NTSG)null, (NTSG)null)));
}
}
public void TestST3DClosestPoint()
{
using (var db = new PostGisTestDataConnection(TestDatabaseConnectionString))
{
var pt = db.Select(() => GeometryInput.STPointFromText("POINT(100 100 30)"));
var line = db.Select(() => GeometryInput.STLineFromText("LINESTRING (20 80 20, 98 190 1, 110 180 3, 50 75 1000)"));
var p1 = db.Select(() => MeasurementFunctions.ST3DClosestPoint(line, pt).STAsEWKT());
var p2 = db.Select(() => MeasurementFunctions.STClosestPoint(line, pt).STAsEWKT());
Assert.AreEqual("POINT(54.6993798867619 128.935022917228 11.5475869506606)", p1);
Assert.AreEqual("POINT(73.0769230769231 115.384615384615)", p2);
}
}
