private bool TryFindCloseBouy(Point p, ref Bouy closest)
{
List <Bouy> bouys = new List <Bouy>();
foreach (object o in marksLB.Items)
{
bouys.AddRange(((Mark)o).Bouys);
}
double maximumDistance = 10.0;
double closestDistance = maximumDistance;
Bouy closestBouy = null;
foreach (Bouy b in bouys)
{
Point onScreen = CoordinatesToScreen(new CoordinatePoint(b.Latitude, b.Longitude, 0));
double distance = TwoDimensionalDistance(p.X, p.Y, onScreen.X, onScreen.Y);
if (distance < closestDistance)
{
closestDistance = distance;
closestBouy = b;
}
}
if (closestBouy != null)
{
closest = closestBouy;
return(true);
}
else
{
closest = null;
return(false);
}
}
private void markTypeCB_SelectedIndexChanged(object sender, EventArgs e)
{
SelectedMark.MarkType = (string)markTypeCB.SelectedItem;
if (SelectedMark.MarkType == "Gate")
{
if (SelectedMark.Bouys.Count < 2)
{
while (SelectedMark.Bouys.Count < 2)
{
Bouy b = NewBouy(SelectedMark);
b.Save();
}
}
}
else if (SelectedMark.MarkType == "Mark")
{
if (SelectedMark.Bouys.Count > 1)
{
while (SelectedMark.Bouys.Count > 1)
{
SelectedMark.Bouys[SelectedMark.Bouys.Count - 1].Delete();
}
}
}
SelectedMark.Save();
lakePNL.Invalidate();
}
private void lakePNL_MouseMove(object sender, MouseEventArgs e)
{
if (_mouseDown)
{
if (zoomInCB.Checked)
{
_zoomSecondPoint = new Point(e.X, e.Y);
lakePNL.Invalidate();
}
else if (SelectedMark != null && _selectedBouy != null)
{
Point mp = new Point(e.X, e.Y);
CoordinatePoint cp = ScreenToCoordinates(mp);
_selectedBouy.Longitude = cp.Longitude;
_selectedBouy.Latitude = cp.Latitude;
_selectedBouy.Save();
lakePNL.Invalidate();
mouseCoordsLBL.Text = _selectedBouy.Latitude.ToString() + " " + _selectedBouy.Longitude.ToString();
}
}
else if (!zoomInCB.Checked)
{
Bouy b = null;
if (TryFindCloseBouy(new Point(e.X, e.Y), ref b))
{
lakePNL.Cursor = Cursors.Hand;
}
else
{
lakePNL.Cursor = Cursors.Default;
}
}
}
private Bouy NewBouy(Mark m)
{
CoordinatePoint bouyC = ScreenToCoordinates(new Point(lakePNL.Width / 2, lakePNL.Height / 2));
Bouy b = new Bouy(m, bouyC.Latitude, bouyC.Longitude);
b.Save();
return(b);
}
private void addBTN_Click(object sender, EventArgs e)
{
Mark m = new Mark("New Mark", "Mark", _course);
m.Save();
double lakeWidth = _lake.West - _lake.East;
double lakeHeight = _lake.North - _lake.South;
Bouy b = NewBouy(m);
marksLB.Items.Add(m);
marksLB.SelectedIndex = marksLB.Items.Count - 1;
}
private void FindClosestBouy(Point p)
{
Bouy b = null;
if (TryFindCloseBouy(p, ref b))
{
_selectedBouy = b;
for (int i = 0; i < marksLB.Items.Count; i++)
{
if (((Mark)marksLB.Items[i]).Id == b.Mark.Id)
{
marksLB.SelectedIndex = i;
}
}
}
}
private void LoadSelectedMark()
{
if (SelectedMark != null)
{
editMarkGB.Enabled = true;
removeBTN.Enabled = true;
markNameTB.Text = SelectedMark.Name;
markTypeCB.SelectedItem = SelectedMark.MarkType;
mouseCoordsLBL.Text = SelectedMark.Bouys[0].Latitude.ToString() + " " + SelectedMark.Bouys[0].Longitude.ToString();
_selectedBouy = SelectedMark.Bouys[0];
lakePNL.Invalidate();
}
else
{
editMarkGB.Enabled = false;
removeBTN.Enabled = false;
}
}
