public PointImage()
{
_points = new List<PointImagePoint>();
_imageControl = new Image();
InitializeComponent();
_zoomControl.Child = _imageControl;
TemporaryPoint = new PointImagePoint(true);
SelectedPoint = new PointImagePoint(true);
CrossColor = Colors.Black;
SelectedColor = Colors.White;
_imageControl.MouseLeftButtonDown += ImageMouseLeftButtonDown;
_imageControl.MouseMove += ImageMouseMove;
IsDeletionEnable = false;
}
// On delete pressed if deletion is enabled, delete and raise ondelete event
protected override void OnKeyDown(KeyEventArgs e)
{
if(e.Key == Key.Delete)
{
if(!SelectedPoint.IsNullPoint)
{
var removed = SelectedPoint;
RemovePoint(SelectedPoint);
SelectedPoint = new PointImagePoint(true);
if(PointDeleted != null)
PointDeleted(this, new PointImageEventArgs()
{
OldImagePoint = removed
});
}
}
base.OnKeyDown(e);
}
protected void ImageMouseLeftButtonDown(object sender, MouseButtonEventArgs e)
{
// Get mouse pos and transform to image source coords
Point mpos = Mouse.GetPosition(_imageControl);
mpos.X *= _finalImage.PixelWidth / _imageControl.ActualWidth;
mpos.Y *= _finalImage.PixelHeight / _imageControl.ActualHeight;
// If isn't within image then return
if(mpos.X < 2 || mpos.Y < 2 &&
mpos.X > _finalImage.PixelWidth - 3 ||
mpos.Y > _finalImage.PixelHeight - 3)
{
SelectedPoint = new PointImagePoint() { IsNullPoint = true };
return;
}
// Check if mouse hovers over point -> list of such points
List<PointImagePoint> hoverPoints = new List<PointImagePoint>();
foreach(var point in _points)
{
if(PointHitTest(mpos, point.Position))
{
hoverPoints.Add(point);
}
}
if(hoverPoints.Count > 0)
{
// If it hovers over ones then find closest one
PointImagePoint hoverPoint = new PointImagePoint();
double minDist = 999999;
foreach(var point in hoverPoints)
{
double dist = (point.Position.X - mpos.X) + (point.Position.Y - mpos.Y);
if(dist < minDist)
{
hoverPoint = point;
minDist = dist;
}
}
if(hoverPoint != _selectedPoint)// if clicked not on selected one, deselect it and select new one
{
SelectedPoint = new PointImagePoint() { IsNullPoint = true };
SelectedPoint = hoverPoint;
_imageMouseXPos.Text = hoverPoint.Position.X.ToString();
_imageMouseYPos.Text = hoverPoint.Position.Y.ToString();
}
}
else
{
// If cursor do not hover over any, set tempPoint as mpos
SelectedPoint = new PointImagePoint() { IsNullPoint = true };
MoveTempPoint(mpos);
_imageMouseXPos.Text = mpos.X.ToString();
_imageMouseYPos.Text = mpos.Y.ToString();
}
base.OnMouseLeftButtonDown(e);
}
// Do not rise event
public void SelectPointQuiet(PointImagePoint point)
{
if(_selectedPoint == point)
return;
PointImagePoint oldpoint = _selectedPoint;
_selectedPoint = point;
if(_selectedPoint.IsNullPoint) // Deselect old point
{
oldpoint.IsSelected = false;
if(!oldpoint.IsNullPoint)
DrawCross(oldpoint.Position, _finalImage, CrossColor);
}
else // Remove temp point if there's one and select point
{
RemoveTempPoint();
DrawCross(_selectedPoint.Position, _finalImage, SelectedColor);
_selectedPoint.IsSelected = true;
}
}
public void RemovePoint(PointImagePoint point)
{
_points.Remove(point);
point.PositionChanged -= PointPositionChanged;
RemoveCross(point.Position, _finalImage);
}
public void AddPoint(PointImagePoint point)
{
point.ParentImage = this;
_points.Add(point);
point.PositionChanged += PointPositionChanged;
DrawCross(point.Position, _finalImage, CrossColor);
}
public PointImagePoint AcceptTempPoint(object value)
{
if(_tempPoint.IsNullPoint)
return null;
PointImagePoint newPoint = new PointImagePoint()
{
Position = _tempPoint.Position,
Value = value,
ParentImage = this
};
_points.Add(newPoint);
newPoint.PositionChanged += PointPositionChanged;
TemporaryPoint.IsNullPoint = true;
return newPoint;
}
private void UpdateMatchedPoints()
{
_camImageFirst.ResetPoints();
_camImageSec.ResetPoints();
foreach(var match in _matches)
{
PointImagePoint pipLeft = new PointImagePoint()
{
Position = new Point(match.LeftPoint.X, match.LeftPoint.Y),
Value = match
};
PointImagePoint pipRight = new PointImagePoint()
{
Position = new Point(match.RightPoint.X, match.RightPoint.Y),
Value = match
};
_camImageFirst.AddPoint(pipLeft);
_camImageSec.AddPoint(pipRight);
}
}
