public static extern ErrorType opencv_getTextSize(byte[] text,
int textLength,
CvHersheyFonts fontFace,
double fontScale,
int thickness,
ref int baseLine,
out IntPtr returnValue);
public static void PutText(Mat mat,
string text,
Point <double> point,
CvHersheyFonts fontFace,
double fontScale,
Scalar <double> scalar,
int thickness = 1,
CvLineTypes lineType = CvLineTypes.Line8,
bool bottomLeftOrigin = false)
{
if (mat == null)
{
throw new ArgumentNullException(nameof(mat));
}
mat.ThrowIfDisposed();
var str = Ncnn.Encoding.GetBytes(text ?? "");
using (var nativePoint = point.ToNative())
using (var nativeScalar = scalar.ToNative())
{
NativeMethods.opencv_putText_double(mat.NativePtr,
str,
str.Length,
nativePoint.NativePtr,
fontFace,
fontScale,
nativeScalar.NativePtr,
thickness,
lineType,
bottomLeftOrigin);
}
}
public static extern ErrorType opencv_putText_float(IntPtr mat,
byte[] text,
int textLength,
IntPtr point,
CvHersheyFonts fontFace,
double fontScale,
IntPtr scalar,
int thickness,
CvLineTypes lineType,
bool bottomLeftOrigin);
public static Size <int> GetTextSize(string text, CvHersheyFonts fontFace, double fontScale, int thickness, ref int baseLine)
{
var str = Ncnn.Encoding.GetBytes(text ?? "");
var error = NativeMethods.opencv_getTextSize(str,
str.Length,
fontFace,
fontScale,
thickness,
ref baseLine,
out var ret);
if (error != NativeMethods.ErrorType.OK)
{
throw new NcnnException("Unknown Exception");
}
return(new Size <int>(ret));
}
