void videoCapture_InitFrame(object sender, EventArgs e)
{
videoCapture.ReadTo(ref frame);
if (frame == null)
{
return;
}
if (isROISelected)
{
initTracking(frame);
Application.Idle -= videoCapture_InitFrame;
Application.Idle += videoCapture_NewFrame;
return;
}
else
{
frame.Draw(roi, Bgr <byte> .Red, 3);
}
this.pictureBox.Image = frame.ToBitmap(); //it will be just casted (data is shared)
GC.Collect();
}
private void timer_Tick(object sender, EventArgs e)
{
const int BORDER_OFFSET = 20;
scale += 10 * dScale; if (scale > 300) dScale = -1; if (scale < 100) dScale = 1;
angle += 5 * dAngle; if (angle > 360) dAngle = -1; if (dAngle < 0) dAngle = 1;
var transformation = Transforms2D.Combine
(
Transforms2D.Rotation((float)Angle.ToRadians(angle)),
Transforms2D.Scale(scale, scale)
);
IEnumerable<PointF> pts = modelPts.Transform(transformation);
var box = pts.BoundingRect(); //maybe apply it to bounding box instead of points (expensive)
pts = pts.Transform(Transforms2D.Translation(-box.X + BORDER_OFFSET, -box.Y + BORDER_OFFSET));
var image = new Bgr<byte>[scale + BORDER_OFFSET * 2, scale + BORDER_OFFSET * 2];
drawContour(pts.ToList(), image);
pictureBox.Image = image.ToBitmap();
}