diff --git a/applications/utilities/postProcessing/sampling/sample/sampleDict b/applications/utilities/postProcessing/sampling/sample/sampleDict
index cb8d07babc..c69f609c39 100644
--- a/applications/utilities/postProcessing/sampling/sample/sampleDict
+++ b/applications/utilities/postProcessing/sampling/sample/sampleDict
@@ -118,9 +118,7 @@ sets
 );
 
 
-// Surface sampling definition: choice of
-//      plane : values on plane defined by point, normal.
-//      patch : values on patch.
+// Surface sampling definition
 //
 // 1] patches are not triangulated by default
 // 2] planes are always triangulated
@@ -209,6 +207,28 @@ surfaces
         // regularise      false;    // Optional: do not simplify
     }
 
+    distance
+    {
+        // Isosurface from signed/unsigned distance to surface
+        type            distanceSurface;
+        signed          true;
+
+        // Definition of surface
+        surfaceType     triSurfaceMesh;
+        surfaceName     integrationPlane.stl;
+        // Distance to surface
+        distance        0.0;
+
+        interpolate     false;
+    }
+
+    triSurfaceSampling
+    {
+        // Sampling on triSurface
+        type        sampledTriSurfaceMesh;
+        surface     integrationPlane.stl;
+        interpolate true;
+    }
 );
 
 
diff --git a/src/sampling/Make/files b/src/sampling/Make/files
index e9d78df7a0..2c7920d29e 100644
--- a/src/sampling/Make/files
+++ b/src/sampling/Make/files
@@ -38,6 +38,7 @@ sampledSurface/sampledSurface/sampledSurface.C
 sampledSurface/sampledSurfaces/sampledSurfaces.C
 sampledSurface/sampledSurfaces/sampledSurfacesGrouping.C
 sampledSurface/sampledSurfacesFunctionObject/sampledSurfacesFunctionObject.C
+sampledSurface/sampledTriSurfaceMesh/sampledTriSurfaceMesh.C
 sampledSurface/thresholdCellFaces/thresholdCellFaces.C
 sampledSurface/thresholdCellFaces/sampledThresholdCellFaces.C
 
diff --git a/src/sampling/sampledSurface/sampledTriSurfaceMesh/sampledTriSurfaceMesh.C b/src/sampling/sampledSurface/sampledTriSurfaceMesh/sampledTriSurfaceMesh.C
new file mode 100644
index 0000000000..6543cb530c
--- /dev/null
+++ b/src/sampling/sampledSurface/sampledTriSurfaceMesh/sampledTriSurfaceMesh.C
@@ -0,0 +1,353 @@
+/*---------------------------------------------------------------------------*\
+  =========                 |
+  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
+   \\    /   O peration     |
+    \\  /    A nd           | Copyright (C) 1991-2009 OpenCFD Ltd.
+     \\/     M anipulation  |
+-------------------------------------------------------------------------------
+License
+    This file is part of OpenFOAM.
+
+    OpenFOAM is free software; you can redistribute it and/or modify it
+    under the terms of the GNU General Public License as published by the
+    Free Software Foundation; either version 2 of the License, or (at your
+    option) any later version.
+
+    OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
+    ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+    FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+    for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with OpenFOAM; if not, write to the Free Software Foundation,
+    Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+
+\*---------------------------------------------------------------------------*/
+
+#include "sampledTriSurfaceMesh.H"
+#include "dictionary.H"
+#include "polyMesh.H"
+#include "polyPatch.H"
+#include "volFields.H"
+#include "meshSearch.H"
+
+#include "addToRunTimeSelectionTable.H"
+
+// * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * //
+
+namespace Foam
+{
+    defineTypeNameAndDebug(sampledTriSurfaceMesh, 0);
+    addToRunTimeSelectionTable
+    (
+        sampledSurface,
+        sampledTriSurfaceMesh,
+        word
+    );
+}
+
+
+// * * * * * * * * * * * * * * * * Constructors  * * * * * * * * * * * * * * //
+
+Foam::sampledTriSurfaceMesh::sampledTriSurfaceMesh
+(
+    const word& name,
+    const polyMesh& mesh,
+    const word& surfaceName
+)
+:
+    sampledSurface(name, mesh),
+    surface_
+    (
+        IOobject
+        (
+            name,
+            mesh.time().constant(), // instance
+            "triSurface",       // local
+            mesh,               // registry
+            IOobject::MUST_READ,
+            IOobject::NO_WRITE
+        )
+    ),
+    needsUpdate_(true),
+    cellLabels_(0),
+    pointMap_(0),
+    faceMap_(0)
+{}
+
+
+Foam::sampledTriSurfaceMesh::sampledTriSurfaceMesh
+(
+    const word& name,
+    const polyMesh& mesh,
+    const dictionary& dict
+)
+:
+    sampledSurface(name, mesh, dict),
+    surface_
+    (
+        IOobject
+        (
+            dict.lookup("surface"),
+            mesh.time().constant(), // instance
+            "triSurface",       // local
+            mesh,               // registry
+            IOobject::MUST_READ,
+            IOobject::NO_WRITE
+        )
+    ),
+    needsUpdate_(true),
+    cellLabels_(0),
+    pointMap_(0),
+    faceMap_(0)
+{}
+
+
+// * * * * * * * * * * * * * * * * Destructor  * * * * * * * * * * * * * * * //
+
+Foam::sampledTriSurfaceMesh::~sampledTriSurfaceMesh()
+{}
+
+
+// * * * * * * * * * * * * * * * Member Functions  * * * * * * * * * * * * * //
+
+bool Foam::sampledTriSurfaceMesh::needsUpdate() const
+{
+    return needsUpdate_;
+}
+
+
+bool Foam::sampledTriSurfaceMesh::expire()
+{
+    // already marked as expired
+    if (needsUpdate_)
+    {
+        return false;
+    }
+
+    sampledSurface::clearGeom();
+    MeshStorage::clear();
+    cellLabels_.clear();
+    pointMap_.clear();
+    faceMap_.clear();
+
+    needsUpdate_ = true;
+    return true;
+}
+
+
+bool Foam::sampledTriSurfaceMesh::update()
+{
+    if (!needsUpdate_)
+    {
+        return false;
+    }
+
+
+    // Find the cells the triangles of the surface are in.
+    // Does approximation by looking at the face centres only
+    const pointField fc = surface_.faceCentres();
+
+    cellLabels_.setSize(fc.size());
+
+    meshSearch meshSearcher(mesh(), false);
+
+    forAll(fc, triI)
+    {
+        cellLabels_[triI] = meshSearcher.findCell
+        (
+            fc[triI],
+            -1,                 // seed
+            true                // use tree
+        );
+
+    }
+
+
+    boolList include(surface_.size(), true);
+
+    label nNotFound = 0;
+
+    forAll(cellLabels_, triI)
+    {
+        if (cellLabels_[triI] == -1)
+        {
+            include[triI] = false;
+            nNotFound++;
+        }
+    }
+    label nTotalNotFound = returnReduce(nNotFound, sumOp<label>());
+
+    if (debug)
+    {
+        Pout<< "surface:" << surface_.size()
+            << "  included:" << surface_.size()-nNotFound
+            << "  total not found" << nTotalNotFound << endl;
+    }
+
+
+    // Add to master all triangles are outside all meshes.
+    {
+        boolList onAnyProc(surface_.size(), false);
+        Pstream::listCombineGather(onAnyProc, orEqOp<bool>());
+
+        if (Pstream::master())
+        {
+            label nAdded = 0;
+            forAll(onAnyProc, triI)
+            {
+                if (!onAnyProc[triI])
+                {
+                    include[triI] = true;
+                    nAdded++;
+                }
+            }
+
+            if (debug)
+            {
+                Pout<< "nAdded to master:" << nAdded << endl;
+            }
+        }
+    }
+
+
+    // Now subset the surface
+    triSurface localSurface
+    (
+        surface_.subsetMesh
+        (
+            include,
+            pointMap_,
+            faceMap_
+        )
+    );
+
+    // And convert into faces.
+    faceList& faces = this->storedFaces();
+    faces.setSize(localSurface.size());
+    forAll(localSurface, i)
+    {
+        faces[i] = localSurface[i].triFaceFace();
+    }
+
+    this->storedPoints() = localSurface.points();
+
+    if (debug)
+    {
+        print(Pout);
+        Pout << endl;
+    }
+
+    needsUpdate_ = false;
+    return true;
+}
+
+
+Foam::tmp<Foam::scalarField>
+Foam::sampledTriSurfaceMesh::sample
+(
+    const volScalarField& vField
+) const
+{
+    return sampleField(vField);
+}
+
+
+Foam::tmp<Foam::vectorField>
+Foam::sampledTriSurfaceMesh::sample
+(
+    const volVectorField& vField
+) const
+{
+    return sampleField(vField);
+}
+
+Foam::tmp<Foam::sphericalTensorField>
+Foam::sampledTriSurfaceMesh::sample
+(
+    const volSphericalTensorField& vField
+) const
+{
+    return sampleField(vField);
+}
+
+
+Foam::tmp<Foam::symmTensorField>
+Foam::sampledTriSurfaceMesh::sample
+(
+    const volSymmTensorField& vField
+) const
+{
+    return sampleField(vField);
+}
+
+
+Foam::tmp<Foam::tensorField>
+Foam::sampledTriSurfaceMesh::sample
+(
+    const volTensorField& vField
+) const
+{
+    return sampleField(vField);
+}
+
+
+Foam::tmp<Foam::scalarField>
+Foam::sampledTriSurfaceMesh::interpolate
+(
+    const interpolation<scalar>& interpolator
+) const
+{
+    return interpolateField(interpolator);
+}
+
+
+Foam::tmp<Foam::vectorField>
+Foam::sampledTriSurfaceMesh::interpolate
+(
+    const interpolation<vector>& interpolator
+) const
+{
+    return interpolateField(interpolator);
+}
+
+Foam::tmp<Foam::sphericalTensorField>
+Foam::sampledTriSurfaceMesh::interpolate
+(
+    const interpolation<sphericalTensor>& interpolator
+) const
+{
+    return interpolateField(interpolator);
+}
+
+
+Foam::tmp<Foam::symmTensorField>
+Foam::sampledTriSurfaceMesh::interpolate
+(
+    const interpolation<symmTensor>& interpolator
+) const
+{
+    return interpolateField(interpolator);
+}
+
+
+Foam::tmp<Foam::tensorField>
+Foam::sampledTriSurfaceMesh::interpolate
+(
+    const interpolation<tensor>& interpolator
+) const
+{
+    return interpolateField(interpolator);
+}
+
+
+void Foam::sampledTriSurfaceMesh::print(Ostream& os) const
+{
+    os  << "sampledTriSurfaceMesh: " << name() << " :"
+        << "  surface:" << surface_.objectRegistry::name()
+        << "  faces:" << faces().size()
+        << "  points:" << points().size();
+}
+
+
+// ************************************************************************* //
diff --git a/src/sampling/sampledSurface/sampledTriSurfaceMesh/sampledTriSurfaceMesh.H b/src/sampling/sampledSurface/sampledTriSurfaceMesh/sampledTriSurfaceMesh.H
new file mode 100644
index 0000000000..1c1aabebcf
--- /dev/null
+++ b/src/sampling/sampledSurface/sampledTriSurfaceMesh/sampledTriSurfaceMesh.H
@@ -0,0 +1,241 @@
+/*---------------------------------------------------------------------------*\
+  =========                 |
+  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
+   \\    /   O peration     |
+    \\  /    A nd           | Copyright (C) 1991-2009 OpenCFD Ltd.
+     \\/     M anipulation  |
+-------------------------------------------------------------------------------
+License
+    This file is part of OpenFOAM.
+
+    OpenFOAM is free software; you can redistribute it and/or modify it
+    under the terms of the GNU General Public License as published by the
+    Free Software Foundation; either version 2 of the License, or (at your
+    option) any later version.
+
+    OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
+    ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+    FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+    for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with OpenFOAM; if not, write to the Free Software Foundation,
+    Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+
+Class
+    Foam::sampledTriSurfaceMesh
+
+Description
+    A sampledSurface from a triSurfaceMesh. It samples on the points/triangles
+    of the triSurface.
+
+    In parallel every processor just operates on the part of the surface
+    where the face centres are inside the mesh. It is then up to the
+    caller to stitch the partial surfaces together.
+
+    No check is done for triangle centres being on multiple processors
+    (should never happen but truncation errors ...)
+
+    Any value on a triangle outside the mesh will be set to 0.
+
+SourceFiles
+    sampledTriSurfaceMesh.C
+
+\*---------------------------------------------------------------------------*/
+
+#ifndef sampledTriSurfaceMesh_H
+#define sampledTriSurfaceMesh_H
+
+#include "sampledSurface.H"
+#include "triSurfaceMesh.H"
+#include "MeshedSurface.H"
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+namespace Foam
+{
+
+/*---------------------------------------------------------------------------*\
+                       Class sampledTriSurfaceMesh Declaration
+\*---------------------------------------------------------------------------*/
+
+class sampledTriSurfaceMesh
+:
+    public sampledSurface,
+    public MeshedSurface<face>
+{
+    //- Private typedefs for convenience
+        typedef MeshedSurface<face> MeshStorage;
+
+    // Private data
+
+        //- Surface to sample on
+        const triSurfaceMesh surface_;
+
+        //- Track if the surface needs an update
+        mutable bool needsUpdate_;
+
+        //- Local cell labels
+        labelList cellLabels_;
+
+        //- From local surface back to surface_
+        labelList pointMap_;
+
+        //- From local surface back to surface_
+        labelList faceMap_;
+
+
+    // Private Member Functions
+
+        //- sample field on faces
+        template <class Type>
+        tmp<Field<Type> > sampleField
+        (
+            const GeometricField<Type, fvPatchField, volMesh>& vField
+        ) const;
+
+
+        template <class Type>
+        tmp<Field<Type> >
+        interpolateField(const interpolation<Type>&) const;
+
+public:
+
+    //- Runtime type information
+    TypeName("sampledTriSurfaceMesh");
+
+
+    // Constructors
+
+        //- Construct from components
+        sampledTriSurfaceMesh
+        (
+            const word& name,
+            const polyMesh& mesh,
+            const word& surfaceName
+        );
+
+        //- Construct from dictionary
+        sampledTriSurfaceMesh
+        (
+            const word& name,
+            const polyMesh& mesh,
+            const dictionary& dict
+        );
+
+
+    // Destructor
+
+        virtual ~sampledTriSurfaceMesh();
+
+
+    // Member Functions
+
+        //- Does the surface need an update?
+        virtual bool needsUpdate() const;
+
+        //- Mark the surface as needing an update.
+        //  May also free up unneeded data.
+        //  Return false if surface was already marked as expired.
+        virtual bool expire();
+
+        //- Update the surface as required.
+        //  Do nothing (and return false) if no update was needed
+        virtual bool update();
+
+
+        //- Points of surface
+        virtual const pointField& points() const
+        {
+            return MeshStorage::points();
+        }
+
+        //- Faces of surface
+        virtual const faceList& faces() const
+        {
+            return MeshStorage::faces();
+        }
+
+
+        //- sample field on surface
+        virtual tmp<scalarField> sample
+        (
+            const volScalarField&
+        ) const;
+
+        //- sample field on surface
+        virtual tmp<vectorField> sample
+        (
+            const volVectorField&
+        ) const;
+
+        //- sample field on surface
+        virtual tmp<sphericalTensorField> sample
+        (
+            const volSphericalTensorField&
+        ) const;
+
+        //- sample field on surface
+        virtual tmp<symmTensorField> sample
+        (
+            const volSymmTensorField&
+        ) const;
+
+        //- sample field on surface
+        virtual tmp<tensorField> sample
+        (
+            const volTensorField&
+        ) const;
+
+
+        //- interpolate field on surface
+        virtual tmp<scalarField> interpolate
+        (
+            const interpolation<scalar>&
+        ) const;
+
+
+        //- interpolate field on surface
+        virtual tmp<vectorField> interpolate
+        (
+            const interpolation<vector>&
+        ) const;
+
+        //- interpolate field on surface
+        virtual tmp<sphericalTensorField> interpolate
+        (
+            const interpolation<sphericalTensor>&
+        ) const;
+
+        //- interpolate field on surface
+        virtual tmp<symmTensorField> interpolate
+        (
+            const interpolation<symmTensor>&
+        ) const;
+
+        //- interpolate field on surface
+        virtual tmp<tensorField> interpolate
+        (
+            const interpolation<tensor>&
+        ) const;
+
+        //- Write
+        virtual void print(Ostream&) const;
+};
+
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+} // End namespace Foam
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+#ifdef NoRepository
+#   include "sampledTriSurfaceMeshTemplates.C"
+#endif
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+#endif
+
+// ************************************************************************* //
diff --git a/src/sampling/sampledSurface/sampledTriSurfaceMesh/sampledTriSurfaceMeshTemplates.C b/src/sampling/sampledSurface/sampledTriSurfaceMesh/sampledTriSurfaceMeshTemplates.C
new file mode 100644
index 0000000000..0dd08f8f26
--- /dev/null
+++ b/src/sampling/sampledSurface/sampledTriSurfaceMesh/sampledTriSurfaceMeshTemplates.C
@@ -0,0 +1,91 @@
+/*---------------------------------------------------------------------------*\
+  =========                 |
+  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
+   \\    /   O peration     |
+    \\  /    A nd           | Copyright (C) 1991-2009 OpenCFD Ltd.
+     \\/     M anipulation  |
+-------------------------------------------------------------------------------
+License
+    This file is part of OpenFOAM.
+
+    OpenFOAM is free software; you can redistribute it and/or modify it
+    under the terms of the GNU General Public License as published by the
+    Free Software Foundation; either version 2 of the License, or (at your
+    option) any later version.
+
+    OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
+    ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+    FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+    for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with OpenFOAM; if not, write to the Free Software Foundation,
+    Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+
+\*---------------------------------------------------------------------------*/
+
+#include "sampledTriSurfaceMesh.H"
+
+// * * * * * * * * * * * * * Private Member Functions  * * * * * * * * * * * //
+
+template <class Type>
+Foam::tmp<Foam::Field<Type> >
+Foam::sampledTriSurfaceMesh::sampleField
+(
+    const GeometricField<Type, fvPatchField, volMesh>& vField
+) const
+{
+    // One value per face
+    tmp<Field<Type> > tvalues(new Field<Type>(faceMap_.size()));
+    Field<Type>& values = tvalues();
+
+    forAll(faceMap_, i)
+    {
+        label cellI = cellLabels_[faceMap_[i]];
+        if (cellI != -1)
+        {
+            values[i] = vField[cellI];
+        }
+        else
+        {
+            values[i] = pTraits<Type>::zero;
+        }
+    }
+
+    return tvalues;
+}
+
+
+template <class Type>
+Foam::tmp<Foam::Field<Type> >
+Foam::sampledTriSurfaceMesh::interpolateField
+(
+    const interpolation<Type>& interpolator
+) const
+{
+    // One value per vertex
+    tmp<Field<Type> > tvalues(new Field<Type>(pointMap_.size()));
+    Field<Type>& values = tvalues();
+
+    forAll(pointMap_, i)
+    {
+        label origPointI = pointMap_[i];
+        label origTriI = surface_.pointFaces()[origPointI][0];
+
+        label cellI = cellLabels_[origTriI];
+
+        if (cellI != -1)
+        {
+            values[i] = interpolator.interpolate(points()[i], cellI);
+        }
+        else
+        {
+            values[i] = pTraits<Type>::zero;
+        }
+    }
+
+    return tvalues;
+}
+
+
+// ************************************************************************* //