public HighGuiTrackbar(HighGuiWindow window, string name, int initial, int limit)
{
this.window = window;
this.name = name;
position.Value = initial;
onTrackbarHolder = new OnTrackbar(OnTrackbarCallback);
int wnd = HighGui.cvCreateTrackbar(name, window.Name, position.Pointer, limit,
Marshal.GetFunctionPointerForDelegate(onTrackbarHolder));
SetHandle(new IntPtr(wnd));
}
void DrawSquares(List<CvPoint> squares, PieceInfo[] pieces, HighGuiWindow window)
{
using (IplImage cpy = lastFrame.CloneImage())
{
StructureSafeMemoryBox<CvPoint> pt = new StructureSafeMemoryBox<CvPoint>(4);
IntPtrSafeMemoryBox rect = new IntPtrSafeMemoryBox();
rect.Value = pt.Pointer;
Int32SafeMemoryBox count = new Int32SafeMemoryBox();
count.Value = 4;
for (int i = 0; i < squares.Count; i += 4)
{
pt[0] = squares[i + 0];
pt[1] = squares[i + 1];
pt[2] = squares[i + 2];
pt[3] = squares[i + 3];
CvPoint center = new CvPoint((squares[i + 0].x + squares[i + 2].x) / 2,
(squares[i + 0].y + squares[i + 2].y) / 2);
// CvScalar color = new CvScalar(0, 255, 255);
CxCore.cvPolyLine(cpy, rect.Pointer, count.Pointer,
1, 1, CvScalar.FromRGB(255, 255, 0), 3, CxCore.CV_AA, 0);
}
PieceInfo[,] layout = lastLayout;
if (layout != null)
{
for (int i = 0; i < 3; i++)
{
for (int j = 0; j < 3; j++)
{
pt[0] = new CvPoint(j * 20 + 3, i * 20 + 3);
pt[1] = new CvPoint(j * 20 + 3, i * 20 + 18);
pt[2] = new CvPoint(j * 20 + 18, i * 20 + 18);
pt[3] = new CvPoint(j * 20 + 18, i * 20 + 3);
CvScalar color = CvScalar.FromRGB(layout[i, j].color[0], layout[i, j].color[1], layout[i, j].color[2]);
CxCore.cvFillPoly(cpy, rect.Pointer, count.Pointer, 1, color, CxCore.CV_AA, 0);
}
}
}
count.Dispose();
rect.Dispose();
pt.Dispose();
window.ShowImage(cpy);
}
}
private void CaptureFramesThread()
{
try
{
isBusy = true;
using (window = new HighGuiWindow(Title))
{
IntPtr hWnd = HighGui.cvGetWindowHandle(Title);
using (capture = new CvCapture(0))
{
IplImage frame = capture.GetNextFrame();
OnInitialize(frame);
while (true)
{
if (flipImage)
IplImage.Flip(frame, lastFrame, 0);
else
frame.CopyTo(lastFrame);
ProcessFrame();
const int EscapeKey = 27;
const int InterFrameDelay = 50;
if (closing) break;
int key = HighGui.cvWaitKey(InterFrameDelay);
if (!IsWindowVisible(hWnd) || key == EscapeKey)
{
Hide();
OnClosed();
break;
}
frame = capture.GetNextFrame();
}
}
}
}
catch (Exception ex)
{
System.Diagnostics.Trace.WriteLine("Camera error: " + ex.ToString());
OnCameraError();
}
isBusy = false;
}
