/// <summary>
/// Constructor
/// </summary>
/// <param name="player">The video player in the GUI</param>
private MMazeBehaviorViewModel( )
{
//Setup the plot
SetupPlot();
//Subscribe to event notifications from the behavior session
MMazeBehaviorSession.GetInstance().PropertyChanged += ExecuteReactionsToModelPropertyChanged;
}
/// <summary>
/// Returns the singleton instance of the MMazeBehaviorSession class
/// </summary>
/// <returns></returns>
public static MMazeBehaviorSession GetInstance()
{
if (_instance == null)
{
lock (_instance_lock)
{
if (_instance == null)
{
_instance = new MMazeBehaviorSession();
}
}
}
return(_instance);
}
private void Camera_NewFrame(object sender, Accord.Video.NewFrameEventArgs eventArgs)
{
//Grab the video frame itself
var video_frame = eventArgs.Frame;
//Create a graphics object
using (Graphics g = Graphics.FromImage(video_frame))
{
//Grab a separate copy of the video frame to save to the file
var video_frame_copy = video_frame.Clone() as System.Drawing.Bitmap;
//Make a semi-transparent rectangle near the top of the image
SolidBrush b = new SolidBrush(System.Drawing.Color.FromArgb(128, System.Drawing.Color.CornflowerBlue));
g.FillRectangle(b, new RectangleF(0, 0, _camera_frame_width, _overlay_height));
//Draw each box
SolidBrush b2 = new SolidBrush(System.Drawing.Color.FromArgb(128, System.Drawing.Color.Red));
for (int i = 0; i < _box_lefts.Count; i++)
{
g.DrawRectangle(new System.Drawing.Pen(b2, 4), new System.Drawing.Rectangle(_box_lefts[i], _box_top, _box_width, _box_height));
}
//Draw some text under each box
List <string> _box_strings = new List <string>()
{
"Left NP",
"Left Prox",
"Right Prox",
"Right NP",
"Sound Cue"
};
for (int i = 0; i < _box_lefts.Count; i++)
{
g.DrawString(_box_strings[i], System.Drawing.SystemFonts.DefaultFont, b2, _box_lefts[i], _box_top + 110);
}
//Now let's draw some graphics based on the current state of the session.
var model = MMazeBehaviorSession.GetInstance();
var vm = MMazeBehaviorViewModel.GetInstance();
if (model != null && vm != null)
{
if (model.LeftNosepokeState)
{
g.FillRectangle(b2, _box_lefts[0], _box_top, _box_width, _box_height);
}
if (model.LeftProxState)
{
g.FillRectangle(b2, _box_lefts[1], _box_top, _box_width, _box_height);
}
if (model.RightProxState)
{
g.FillRectangle(b2, _box_lefts[2], _box_top, _box_width, _box_height);
}
if (model.RightNosepokeState)
{
g.FillRectangle(b2, _box_lefts[3], _box_top, _box_width, _box_height);
}
if (model.IsSoundPlaying)
{
g.FillRectangle(b2, _box_lefts[4], _box_top, _box_width, _box_height);
}
//Create blank canvas for saving image to video file
Bitmap resized_canvas = new Bitmap(video_frame_copy.Width, video_frame_copy.Height + _overlay_height);
//Create a new graphics object with the blank canvas
using (Graphics g2 = Graphics.FromImage(resized_canvas))
{
//Paste the video frame on the blank canvas
g2.DrawImage(video_frame_copy, 0, _overlay_height, video_frame_copy.Width, video_frame_copy.Height);
//Draw the overlay on the top of the image
g2.FillRectangle(b, new RectangleF(0, 0, _camera_frame_width, _overlay_height));
for (int i = 0; i < _box_lefts.Count; i++)
{
g2.DrawRectangle(new System.Drawing.Pen(b2, 4), new System.Drawing.Rectangle(_box_lefts[i], _box_top, _box_width, _box_height));
g2.DrawString(_box_strings[i], System.Drawing.SystemFonts.DefaultFont, b2, _box_lefts[i], _box_top + 110);
}
if (model.LeftNosepokeState)
{
g2.FillRectangle(b2, _box_lefts[0], _box_top, _box_width, _box_height);
}
if (model.LeftProxState)
{
g2.FillRectangle(b2, _box_lefts[1], _box_top, _box_width, _box_height);
}
if (model.RightProxState)
{
g2.FillRectangle(b2, _box_lefts[2], _box_top, _box_width, _box_height);
}
if (model.RightNosepokeState)
{
g2.FillRectangle(b2, _box_lefts[3], _box_top, _box_width, _box_height);
}
if (model.IsSoundPlaying)
{
g2.FillRectangle(b2, _box_lefts[4], _box_top, _box_width, _box_height);
}
//Now let's take the current video frame and write it out to a saved video for the session
vm.WriteVideoFrame(resized_canvas);
}
//Release some resouces
resized_canvas.Dispose();
}
//Release some resources
video_frame_copy.Dispose();
}
}
