public static Point TransformPoint(PointD[] pos3, int idiolCenterX, int idiolCenterY, Point srcpos)
{
try
{
var srcPos = new AffinePos(pos3[0], pos3[1], pos3[2], pos3[3]);
var trsData = srcPos.ToTrnsData(1, 1);
var xshift = (int)(trsData.XSrcCnter - idiolCenterX);
var yshift = (int)(trsData.YSrcCnter - idiolCenterY);
double radian = trsData.Angle;
double cosRadian = Cos(radian);
double sinRadian = Sin(radian);
var x = srcpos.X - xshift;
var y = srcpos.Y - yshift;
var sourceX = (x - idiolCenterX) * cosRadian + (y - idiolCenterY) * (sinRadian);
sourceX += (idiolCenterX);
var sourceY = (x - idiolCenterX) * -sinRadian + (y - idiolCenterY) * cosRadian;
sourceY += (idiolCenterY);
var isourceX = (int)sourceX;
var isourceY = (int)sourceY;
return(new Point(isourceX, isourceY));
}
catch (Exception ex)
{
Console.WriteLine(ex.ToString());
return(default(Point));
}
}
public static PointD GetCenter(this AffinePos pos)
{
var xCenter = Abs(pos.LT.X + pos.RB.X) / 2;
var yCenter = Abs(pos.LB.Y + pos.RT.Y) / 2;
return(new PointD(xCenter, yCenter));
}
public static byte[][] Run(MemoryStream bytestream, int w, int h, PointD[] pos3, bool onlyxy = false)
{
try
{
var srcPos = new AffinePos(pos3[0], pos3[1], pos3[2], pos3[3]);
var trsData = srcPos.ToTrnsData(w, h);
var xc = trsData.XSrcCnter;
var yc = trsData.YSrcCnter;
var xmax = Math.Max(w - xc, xc) * 2;
var ymax = Math.Max(h - yc, yc) * 2;
byte[][] R1 = CreateJagged(ymax, xmax);
for (int i = 0; i < h; i++)
{
var data = new byte[w];
bytestream.Seek(i * w, SeekOrigin.Begin);
bytestream.Read(data, 0, w);
var reshaped = data.Reshape(1, w).ToJagged();
xytransform(ref R1, trsData, reshaped, i, xmax, ymax);
}
if (onlyxy)
{
return(R1);
}
var w1 = R1[0].Length;
var h1 = R1.Length;
var degree = trsData.Angle * 180 / Math.PI;
double radian = trsData.Angle;
double cosRadian = Cos(radian);
double sinRadian = Sin(radian);
int newWidth = (int)(w1 * Abs(cosRadian) + h1 * Abs(sinRadian));
int newHeight = (int)(h1 * Abs(cosRadian) + w1 * Abs(sinRadian));
byte[][] R2 = CreateJagged(newWidth, newHeight);
for (int i = 0; i < R1.Length; i++)
{
var reshaped = R1[i].Reshape(1, w1).ToJagged();
rotateGeneral(ref R2, trsData, reshaped, i, w1, h1);
}
return(R2);
}
catch (Exception ex)
{
Console.WriteLine(ex.ToString());
return(null);
}
}
public static TrnsData ToTrnsData
(this AffinePos srcPos, int w, int 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;
double radian;
if (Abs(dx) < 0.0001)
{
radian = 1.5708;
}
else if (Abs(dy) < 0.0001)
{
radian = 3.14159;
}
else
{
radian = Math.Atan(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, PointD 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));
}
