public void GetBBox()
{
if (_bboxStartPoint != null && _bboxEndPoint != null && _selectedImage != null)
{
var left = Math.Min((float)_bboxStartPoint.Value.X, (float)_bboxEndPoint.Value.X);
var right = Math.Max((float)_bboxStartPoint.Value.X, (float)_bboxEndPoint.Value.X);
var top = Math.Min((float)_bboxStartPoint.Value.Y, (float)_bboxEndPoint.Value.Y);
var bottom = Math.Max((float)_bboxStartPoint.Value.Y, (float)_bboxEndPoint.Value.Y);
if (left < 0)
{
left = 0;
}
if (right > ActualWidth)
{
right = (float)ActualWidth;
}
if (top < 0)
{
top = 0;
}
if (bottom > ActualHeight)
{
bottom = (float)ActualHeight;
}
var width = right - left;
var height = bottom - top;
if ((width * height) > 0.001) // mouse false positives
{
var a = new Annotation
{
Cx = (float)((left + width / 2.0d) / ActualWidth),
Cy = (float)((top + height / 2.0d) / ActualHeight),
Width = (float)(width / ActualWidth),
Height = (float)(height / ActualHeight)
};
_selectedImage.AddAnnotation(a);
}
}
}
