public void RotateProperDouble(int rotation, PdfSourcePoint point)
{
double temp;
rotation = (rotation + 360) % 360;
switch (rotation)
{
case 90:
//temp = (point.dY - _dY -_dHeight) + point.dX;
temp = -(_dY + _dHeight - point.dY) + point.dX;
_dY = (_dX - point.dX) + point.dY;
_dX = temp;
temp = _dWidth;
_dWidth = _dHeight;
_dHeight = temp;
break;
case 180:
_dX = point.dX - (dRight - point.dX);
_dY = point.dY - (dBottom - point.dY);
break;
case 270:
temp = (_dY - point.dY) + point.dX;
_dY = -(_dX + _dWidth - point.dX) + point.dY;
_dX = temp;
temp = _dWidth;
_dWidth = _dHeight;
_dHeight = temp;
break;
default:
break;
}
}
public PdfSourcePoint GetOnPageCoordinates(PdfSourcePoint onCanvasCoordinates, int rotation)
{
PdfSourcePoint origin; //origin of page in canvas coordinates (botleft corner of unrotated page)
switch (rotation)
{
case 0:
origin = new PdfSourcePoint(_dX, dBottom); break;
case 90:
origin = new PdfSourcePoint(_dX, _dY); break;
case 180:
origin = new PdfSourcePoint(dRight, _dY); break;
case 270:
origin = new PdfSourcePoint(dRight, dBottom); break;
default:
throw new InvalidProgramException();
}
PdfSourcePoint onPage = onCanvasCoordinates - origin;
onPage.RotateAroundOrigin(360 - rotation);
onPage.dY = -onPage.dY;
return(onPage);
}
public double ShortestDistanceSquared(PdfSourcePoint point)
{
double l = dX - point.dX;
double r = point.dX - dRight;
double t = dY - point.dY;
double b = point.dY - dBottom;
double h = Math.Max(0.0, Math.Max(l, r));
double v = Math.Max(0.0, Math.Max(t, b));
return(v * v + h * h);
}
public bool contains(PdfSourcePoint point)
{
return(point.dX >= _dX && point.dY >= _dY && point.dX <= dRight && point.dY <= dBottom);
}