/// <summary>
/// Generates Balls, BoatMarkers, Gates once Course Entry & Exit coordinates are available.
/// </summary>
private static void GenerateCourseFeatures()
{
// Pre Gates (55m)
PreGates[0] = new CoursePosition(-1.25, 0);
PreGates[1] = new CoursePosition(1.25, 0);
PreGates[2] = new CoursePosition(-1.25, LengthM);
PreGates[3] = new CoursePosition(1.25, LengthM);
// Entry Gates
Gates[0] = new CoursePosition(-1.25, 55);
Gates[1] = new CoursePosition(1.25, 55);
// Exit Gates
Gates[2] = new CoursePosition(-1.25, LengthM - 55);
Gates[3] = new CoursePosition(1.25, LengthM - 55);
Balls[0] = new CoursePosition(-11.5, 27 + 55); // Ball 1
for (int i = 1; i < 6; i++)
{
// Alternate X position (-11.5, 11.5)
Balls[i] = new CoursePosition(Balls[i - 1].X * -1d,
Balls[i - 1].Y + 41);
}
for (int i = 0; i < Balls.Length; i++)
{
BoatMarkers[i * 2] = new CoursePosition(-1.15, Balls[i].Y);
BoatMarkers[i * 2 + 1] = new CoursePosition(1.15, Balls[i].Y);
}
}
/// <summary>
/// Converts relative course position X,Y coordiantes to a point on the drawable screen.
/// Screen size is always positive, for example (0,0) upper left (46,738) lower right at a ScaleFactor of 2.0.
/// </summary>
/// <param name="position"></param>
/// <returns></returns>
private PointF PointFromCoursePosition(CoursePosition position)
{
// CenterOffset is used to create a positive X coordinate from CoursePosition which is relative to
// pre-gate where center line is x=0,y=0.
float x = ScaleFactor * ((float)position.X + CenterOffset);
float y = (ScaleFactor * (float)position.Y) + TopBottomMargin;
return(new PointF(x, y));
}
///
/// <summary> Get handle position in x,y coordinates from the pilon. </summary>
///
private CoursePosition CalculateRopeHandlePosition(Measurement current)
{
CoursePosition virtualHandlePos = m_rope.GetHandlePosition(current.RopeAngleDegrees);
// Actual handle position is calculated relative to the pilon/boat position, behind the boat.
double y = current.BoatPosition.Y - virtualHandlePos.Y;
double x = current.BoatPosition.X - virtualHandlePos.X;
return new CoursePosition(x, y);
}
public void CoursePositionFromGeoTest()
{
// Grab a boatposition and verify where in the X,Y course plane it should fit.
// 7.45, 42.289983, -71.358973, 13.68, 0.11289 <-- before the course
// 21.63, 42.288066, -71.359257, 14.87, 0.50935 <-- just prior to ball 1, after gate crossing
// 40.71, 42.285529, -71.359519, 14.27, 0.59728 <-- between exit gates and the 55's
// 45.32, 42.285165, -71.359369, 5.60, -0.10074 <-- way past the course, looping around
// 15.02, 42.288937, -71.359136, 14.33, 0.77112 <-- boat is passing through the 55s.
//42.2867806,"Longitude":-71.3594418 == Chet @ 15 seconds into the GOPR0565.mp4
// .\slalom\SlalomTracker\Video\MetadataExtractor\GOPR0565.json
CoursePassFactory factory = new CoursePassFactory();
CoursePass pass = factory.FromFile("./Video/GOPR0565.json");
CoursePosition position = pass.CoursePositionFromGeo(42.2867806, -71.3594418);
Assert.IsTrue((int)position.X == 0, "Incorrect course X position.");
Assert.IsTrue((int)position.Y == 61, "Incorrect course Y position.");
}
private void DrawCourseBounds(List <GeoCoordinate> list, Color color)
{
// Convert geos to relative course positions, then to absolute screen points.
List <PointF> points = new List <PointF>(list.Count);
for (int i = 0; i < list.Count; i++)
{
CoursePosition position = _pass.CoursePositionFromGeo(list[i]);
points.Add(PointFromCoursePosition(position));
}
Pen pen = new Pen(color, 0.6F);
pen.DashStyle = System.Drawing.Drawing2D.DashStyle.Dot;
_graphics.DrawLine(pen, points[0], points[1]);
_graphics.DrawLine(pen, points[1], points[2]);
_graphics.DrawLine(pen, points[2], points[3]);
_graphics.DrawLine(pen, points[3], points[0]);
}
void DrawHandleSpeed(Measurement m, int measurementIndex)
{
const double SpeedGraphHeight = 10.0d;
double speedHeight = (Math.Abs(m.RopeSwingSpeedRadS) / maxHandleSpeed) * SpeedGraphHeight;
bool accelerating = false;
// if (speedHeight == SpeedGraphHeight)
// {
// string maxSpeed = Math.Round(m.HandleSpeedMps * 2.23694, 1) + "mph";
// parent.DrawTextNearMeasurement(m, maxSpeed);
// }
if (measurementIndex > 0)
{
double prevSpeed = parent._pass.Measurements[measurementIndex - 1].RopeSwingSpeedRadS;
accelerating = Math.Abs(m.RopeSwingSpeedRadS) >= Math.Abs(prevSpeed);
}
// Course.WidthM
CoursePosition startPosition = new CoursePosition(Course.WidthM, m.HandlePosition.Y);
CoursePosition endPosition = new CoursePosition(Course.WidthM - speedHeight, m.HandlePosition.Y);
PointF startPoint = parent.PointFromCoursePosition(startPosition);
PointF endPoint = parent.PointFromCoursePosition(endPosition);
Color color = GetAcceleratingColor(accelerating);
Pen pen = new Pen(color, 5.0f);
parent._graphics.DrawLine(pen, startPoint, endPoint);
// // Get the root mean square of the last 10 measurements.
// double averageSpeed = parent._pass.Measurements.GetRange(measurementIndex-10, 10)
// .Select(s => s.HandleSpeedMps)
// .RootMeanSquare() * 2.23694;
// string speed = Math.Round(averageSpeed, 1) + "mph";
// parent.DrawTextNearMeasurement(m, speed);
}