private void DrawModel(Graphics g, FingertipInfo[] fingertips)
{
if (_model == null)
{
return;
}
float imageWidth = g.VisibleClipBounds.Width;
float imageHeight = g.VisibleClipBounds.Height;
float pageAspect = (float)_model.PageWidth / (float)_model.PageHeight;
float imageAspect = imageWidth / imageHeight;
bool landscape = pageAspect > imageAspect;
int borderWidth = _model.PageWidth - _model.BorderMargin;
int borderHeight = _model.PageHeight - _model.BorderMargin;
float ratio;
if (landscape)
{
ratio = imageWidth / borderWidth;
}
else
{
ratio = imageHeight / borderHeight;
}
// ratio = 0.1F;
g.ScaleTransform(ratio, ratio);
g.FillRectangle(Brushes.Black, 0, 0, borderWidth, borderHeight);
g.FillRectangle(Brushes.White, _model.BorderMargin, _model.BorderMargin, borderWidth - _model.BorderMargin, borderHeight - _model.BorderMargin);
int offset = _model.BorderPadding + _model.BorderThickness;
foreach (var region in _model)
{
g.DrawRectangle(Pens.Red, region.X + offset, region.Y + offset, region.Width, region.Height);
}
int fingertipSize = 25;
if (fingertips != null)
{
foreach (var fingertip in fingertips)
{
g.FillRectangle(
Brushes.Blue,
(fingertip.x * borderWidth) - fingertipSize,
(fingertip.y * borderHeight) - fingertipSize,
fingertipSize * 2,
fingertipSize * 2);
}
}
}
private void UpdateUI()
{
int n = WcPadInterop.Update();
FingertipInfo[] fingertips = null;
if (n > 0)
{
toolStripStatusLabel1.Text = n.ToString() + " fingertips detected.";
fingertips = new FingertipInfo[n];
for (int i = 0; i < n; ++i)
{
fingertips[i] = WcPadInterop.GetFingertipInfo(i);
}
}
else if (n == 0)
{
toolStripStatusLabel1.Text = "Map detected.";
}
else
{
toolStripStatusLabel1.Text = "No map detected.";
}
Bitmap bitmap = pictureBox1.Image as Bitmap;
if (bitmap == null)
{
bitmap = new Bitmap(pictureBox1.Width, pictureBox1.Height);
pictureBox1.Image = bitmap;
}
Graphics g = Graphics.FromImage(bitmap);
if (n < 0)
{
g.Clear(Color.Red);
}
else
{
g.Clear(Color.Black);
DrawModel(g, fingertips);
}
pictureBox1.Invalidate();
}
