/// <summary>
/// Draws rectangle.
/// </summary>
/// <param name="image">Input image.</param>
/// <param name="rect">Rectangle.</param>
/// <param name="color">Object's color.</param>
/// <param name="thickness">Border thickness (-1 to fill the object).</param>
/// <param name="opacity">Sets alpha channel where 0 is transparent and 255 is full opaque.</param>
public unsafe static void Draw(this Bgr <byte>[,] image, Rectangle rect, Bgr <byte> color, int thickness, byte opacity = Byte.MaxValue)
{
if (float.IsNaN(rect.X) || float.IsNaN(rect.Y))
{
return;
}
draw(image, opacity, cvImg =>
{
CvCoreInvoke.cvRectangleR(&cvImg, rect, color.ToCvScalar(), thickness, LineTypes.EightConnected, 0);
});
}
/// <summary>
/// Draws rectangle.
/// </summary>
/// <param name="image">Input image.</param>
/// <param name="rect">Rectangle.</param>
/// <param name="color">Object's color.</param>
/// <param name="thickness">Border thickness. If less than zero structure will be filled.</param>
/// <param name="opacity">Sets alpha channel where 0 is transparent and 255 is full opaque.</param>
public unsafe static void Draw(this Bgr <byte>[,] image, Rectangle rect, Bgr <byte> color, int thickness, byte opacity = Byte.MaxValue)
{
if (float.IsNaN(rect.X) || float.IsNaN(rect.Y))
{
return;
}
using (var img = image.Lock())
{
var iplImage = img.AsCvIplImage();
CvCoreInvoke.cvRectangleR(&iplImage, rect, color.ToCvScalar(opacity), thickness, LineTypes.EightConnected, 0);
}
}