public static PointD GetCenter(this AffinePos pos)
{
var xCenter = Abs(pos.LT.X - pos.RT.X) / 2;
var yCenter = Abs(pos.LT.Y - pos.RT.Y) / 2;
return(new PointD(xCenter, yCenter));
}
public static TrnsData ToTrnsData
(this AffinePos srcPos, int w, int h)
{
//inner w h
var innerh = PosL2(srcPos.LB, srcPos.LT);
var innerw = PosL2(srcPos.RT, srcPos.LT);
var trgPos = srcPos.MoveToCenter(new PointD(w / 2.0, h / 2.0)); // ok
var fcenterX = srcPos.GetCenter().X;
var fcenterY = srcPos.GetCenter().Y;
var lcenterX = trgPos.GetCenter().X;
var lcenterY = trgPos.GetCenter().Y;
var xshift = lcenterX - fcenterX;
var yshift = lcenterY - fcenterY;
var dx = srcPos.LT.X - srcPos.RT.X;
var dy = srcPos.LT.Y - srcPos.RT.Y;
if (dx == 0)
{
return(default(TrnsData));
}
//var angle_degree = 360 - Math.Atan2(dy, dx) * 180 / Math.PI;
//double radian;
//angle_degree %= 360;
//radian = PI / 180.0 * angle_degree;
var radian = Math.Atan(dy / dx);
var radian2 = Math.Atan2(dy, dx);
return(new TrnsData()
{
H = h,
W = w,
XShift = (int)xshift,
YShift = (int)yshift,
Innerw = innerw,
Innterh = innerh,
XSrcCnter = (int)fcenterX,
YSrcCnter = (int)fcenterY,
dX = (int)dx,
dY = (int)dy,
Angle = radian,
});
}
public static AffinePos MoveToCenter(this AffinePos pos, PointD center)
{
var wHalf = Math.Sqrt(Math.Pow((pos.LT.X - pos.RT.X), 2) + Math.Pow((pos.LT.Y - pos.RT.Y), 2));
var hHalf = Math.Sqrt(Math.Pow((pos.LT.X - pos.LB.X), 2) + Math.Pow((pos.LT.Y - pos.LB.Y), 2));
var x1 = center.X - wHalf;
var x2 = center.X - wHalf;
var x3 = center.X + wHalf;
var x4 = center.X + wHalf;
var y1 = center.Y - hHalf;
var y3 = center.Y + hHalf;
var y2 = center.Y + hHalf;
var y4 = center.Y - hHalf;
return(new AffinePos(x1, y1, x2, y2, x3, y3, x4, y4));
}
public static AffinePos GetCentered(this AffinePos pos, Point center)
{
var wHalf = Abs(pos.LT.X - pos.RT.X) / 2;
var hHalf = Abs(pos.LT.Y - pos.RT.Y) / 2;
var x1 = center.X - wHalf;
var x2 = center.X - wHalf;
var x3 = center.X + wHalf;
var x4 = center.X + wHalf;
var y1 = center.Y - hHalf;
var y3 = center.Y + hHalf;
var y2 = center.Y + hHalf;
var y4 = center.Y - hHalf;
return(new AffinePos(x1, y1, x2, y2, x3, y3, x4, y4));
}
public static int[,] xytransform(int[,] src, AffinePos srcPos, AffinePos trgPos)
{
var h = src.GetLength(0);
var w = src.GetLength(1);
var fcenterX = srcPos.GetCenter().X;
var fcenterY = srcPos.GetCenter().Y;
var lcenterX = trgPos.GetCenter().X;
var lcenterY = trgPos.GetCenter().Y;
var xshift = (int)(lcenterX - fcenterX);
var yshift = (int)(lcenterY - fcenterY);
int[,] R = new int[h + Abs(yshift), w + Abs(xshift)];
for (int j = 0; j < h; j++)
{
for (int i = 0; i < w; i++)
{
if (i - xshift >= 0 &&
j - yshift >= 0 &&
i - xshift < R.GetLength(1) &&
j - yshift < R.GetLength(0))
{
R[j - yshift, i - xshift] = src[j, i];
}
}
}
// now R is shifted
/*
* var dx = Abs(srcPos.LT.X - srcPos.RT.X);
* var dy = Abs(srcPos.LT.Y - srcPos.RT.Y);
* if (dx == 0) return null;
* var angle_degree = 360 - Math.Atan2(dy, dx)*180/Math.PI;
* var rotationResult = rotateGeneral(R, R.GetLength(1), R.GetLength(0), angle_degree);
*
* return rotationResult;
*/
return(R);
}
private void btnxyaffineStart_Click(object sender, RoutedEventArgs e)
{
OpenFileDialog ofd = new OpenFileDialog();
if (ofd.ShowDialog() == System.Windows.Forms.DialogResult.OK)
{
var img = new Img(ofd.FileName);
var w = img.Width;
var h = img.Height;
// -- Set Ratio
RatioW = w / cvsOriginal.Width;
RatioH = h / cvsOriginal.Height;
// --
var data = img.Data.TointArray();
// ------------
imgOriginal.Source = new BitmapImage(new Uri(ofd.FileName));
// ------------
var p1 = new Point(132, 103);
var p2 = new Point(100, 101);
var srcPos = new AffinePos(
178, 1902,
132, 103,
933, 57,
0, 0
);
var trgPos = new AffinePos(
100, 1900,
100, 101,
1901, 101,
0, 0
);
int[,] ResultArray = xytransform(data, srcPos, trgPos);
/// Start To Bitmap
//var bmpsource = ResultArray.ToBitmap().ToImageSource();
var bmpsource = ResultArray.ToBitmap_SetPixel().ToImageSource();
imgRotated.Source = bmpsource;
// SAve
string path = @"C:\Data\Rotated.jpg";
ExtLib.SaveImg(path, bmpsource);
}
}
private void btnWithPointStart_Click(object sender, RoutedEventArgs e)
{
OpenFileDialog ofd = new OpenFileDialog();
if (ofd.ShowDialog() == System.Windows.Forms.DialogResult.OK)
{
var img = new Img(ofd.FileName);
var w = img.Width;
var h = img.Height;
// -- Set Ratio
RatioW = w / cvsOriginal.ActualWidth;
RatioH = h / cvsOriginal.ActualHeight;
// --
var data = img.Data.TointArray();
// ------------
imgOriginal.Source = new BitmapImage(new Uri(ofd.FileName));
// ------------
if (LBPos == null || LTPos == null || RTPos == null)
{
return;
}
var srcPos = new AffinePos(LBPos, LTPos, RTPos, RBPos);
var trgPos = srcPos.GetCentered(new Point(w / 2, h / 2));
var poslist = new PointD[4] {
LBPos, LTPos, RTPos, RBPos
};
var afindata = new AffinePos(LBPos, LTPos, RTPos, RBPos);
var recipe = afindata.ToTrnsData(w, h);
int[,] ResultArray = rotateGeneral(data, recipe.W, recipe.H, recipe.Angle, true);
if (ResultArray == null)
{
return;
}
/// Start To Bitmap
//var bmpsource = ResultArray.ToBitmap().ToImageSource();
var bmpsource = ResultArray.ToBitmap_SetPixel().ToImageSource();
imgRotated.Source = bmpsource;
// SAve
string path = @"C:\Data\Rotated.jpg";
ExtLib.SaveImg(path, bmpsource);
}
}
