public void TestByName()
{
KnownCourses courses = new KnownCourses();
Course cove = courses.ByName("cove");
Assert.IsTrue(cove.Course55EntryCL.Latitude == 42.28958);
double coveHeading = cove.GetCourseHeadingDeg();
var poly = cove.Polygon;
Course outside = courses.ByName("outside");
Assert.IsTrue(outside.Course55ExitCL.Longitude == -71.361781);
double outsideHeading = outside.GetCourseHeadingDeg();
}
public static CoursePosition CoursePositionFromGeo(GeoCoordinate boatPosition, Course course)
{
double distance = boatPosition.GetDistanceTo(course.Course55EntryCL);
double boatHeading = Util.GetHeading(course.Course55EntryCL, boatPosition);
double courseHeading = course.GetCourseHeadingDeg();
double radiansOffCenter = Util.DegreesToRadians(courseHeading - boatHeading);
// calculate 3 angles
double deltaRadians = Util.DegreesToRadians(90) - radiansOffCenter;
// x axis
double x = distance * (Math.Sin(radiansOffCenter) / Math.Sin(Util.DegreesToRadians(90)));
// y axis (how far down the course)
double y = distance * (Math.Sin(deltaRadians) / Math.Sin(Util.DegreesToRadians(90)));
//Console.WriteLine($"CoursePosition: {boatHeading}, {courseHeading}, {distance}, {x}, {y}");
return(new CoursePosition(x, y));
}
public void TestGetCourseHeadingDeg()
{
double heading = _course.GetCourseHeadingDeg();
Assert.IsTrue(Math.Round(heading) == 5.0, "heading is not equal");
}
