public double DirectionTo(Coordinate coordTo)
{
double dir;
//Checking for vertical dirction
if (coordTo.X == this.X)
{
if (coordTo.Y == this.Y)
{
//_start == _end
dir = 0;
return dir;
}
//not allowed to divide by zero...
if (coordTo.Y > this.Y)
//tEnd is north of tStart...
dir = 90; //degrees
else
//tEnd is south of tStart...
dir = 270; //degrees
return dir;
}
//Checking for horisontal direction
else if (coordTo.Y == this.Y)
{
//not allowed to divide by zero...
if (coordTo.X < this.X)
//tEnd is west of tStart...
dir = 180; //degrees
else
//tEnd is east of tStart...
dir = 0; //degrees
return dir;
}
dir = Math.Atan((coordTo.Y - this.Y) / (coordTo.X - this.X)); //radians
dir = dir * (180.0 / Math.PI); //Converting radians to 360 degress
if (coordTo.X < this.X)
{
if (coordTo.Y > this.Y)
//tEnd is northwest of tStart
dir = dir + 180; //degrees
else if (coordTo.Y < this.Y)
//tEnd is southwest of tStart
dir = dir + 180; //degrees
}
//Making sure dir is between 0 and 360
while (dir > 360)
{
dir = dir - 360;
}
while (dir < 0)
{
dir = dir + 360;
}
return dir;
}
public double DirectionFrom(Coordinate coordTo)
{
return coordTo.DirectionTo(this);
}
public double DistanceTo(Coordinate coordTo)
{
Double dist;
dist = Math.Sqrt((Math.Pow((this.X - coordTo.X), 2.0) + Math.Pow((this.Y - coordTo.Y), 2.0)));
return dist;
}
