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// Copyright (C) 1999-2017
// Smithsonian Astrophysical Observatory, Cambridge, MA, USA
// For conditions of distribution and use, see copyright notice in "copyright"
#include "context.h"
#include "frame3dbase.h"
#include "fitsimage.h"
Vector3d Frame3dBase::mapFromRef3d(const Vector& vv, Coord::InternalSystem sys)
{
// context->slice() IMAGE (ranges 1-n)
double sl = keyContext->slice(2)-.5;
return mapFromRef3d(vv,sys,sl);
}
Vector3d Frame3dBase::mapFromRef3d(const Vector& vv, Coord::InternalSystem sys,
double sl)
{
// note: sl is in REF=DATA coordinates
Matrix3d mm;
switch (sys) {
case Coord::REF:
return Vector3d(vv,sl);
case Coord::USER:
mm = refToUser3d;
break;
case Coord::WIDGET:
mm = refToWidget3d;
break;
case Coord::CANVAS:
mm = refToCanvas3d;
break;
case Coord::WINDOW:
mm = refToWindow3d;
break;
case Coord::PANNER:
mm = refToPanner3d;
break;
case Coord::MAGNIFIER:
mm = refToMagnifier3d;
break;
default:
// na
break;
}
return Vector3d(vv,sl)*mm;
}
Vector3d Frame3dBase::mapToRef3d(const Vector& vv, Coord::InternalSystem sys)
{
// context->slice() IMAGE (ranges 1-n)
double sl = keyContext->slice(2)-.5;
return mapToRef3d(vv,sys,sl);
}
Vector3d Frame3dBase::mapToRef3d(const Vector& vv, Coord::InternalSystem sys,
double sl)
{
switch (sys) {
case Coord::REF:
return Vector3d(vv,sl);
case Coord::USER:
return Vector3d(vv,sl)*userToRef3d;
default:
break;
}
// note: sl is in REF=DATA coordinates
Vector3d xx = Vector3d(1,0,sl)*refToWidget3d;
Vector3d yy = Vector3d(0,1,sl)*refToWidget3d;
Vector3d zz = Vector3d(0,0,sl)*refToWidget3d;
Vector3d ii=xx-zz;
Vector3d jj=yy-zz;
Vector3d nn = cross(jj,ii).normalize();
double& a = nn[0];
double& b = nn[1];
double& c = nn[2];
double d = -a*xx[0] -b*xx[1] -c*xx[2];
Vector ww;
switch (sys) {
case Coord::WIDGET:
ww = vv;
break;
case Coord::CANVAS:
ww = vv*canvasToWidget;
break;
case Coord::WINDOW:
ww = vv*windowToWidget;
break;
case Coord::PANNER:
ww = vv*pannerToWidget;
break;
case Coord::MAGNIFIER:
ww = vv*magnifierToWidget;
break;
default:
// na
break;
}
double z = (-a*ww[0] -b*ww[1] -d)/c;
return Vector3d(ww,z)*widgetToRef3d;
}
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