New spatialLinear cellSizeFunction, allowing a linear grade in space in a given

direction.  Not a function of surface distance.

src/conformalVoronoiMesh/Make/files

@@ -15,6 +15,7 @@ $(cellSiseFunctions)/uniform/uniform.C
 $(cellSiseFunctions)/uniformDistance/uniformDistance.C
 $(cellSiseFunctions)/linearDistance/linearDistance.C
 $(cellSiseFunctions)/surfaceOffsetLinearDistance/surfaceOffsetLinearDistance.C
+$(cellSiseFunctions)/linearSpatial/linearSpatial.C
 
 initialPointsMethod/initialPointsMethod/initialPointsMethod.C
 initialPointsMethod/uniformGrid/uniformGrid.C

src/conformalVoronoiMesh/cellSizeControlSurfaces/cellSizeFunction/linearSpatial/linearSpatial.C

@@ -0,0 +1,145 @@
+/*---------------------------------------------------------------------------*\
+  =========                 |
+  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
+   \\    /   O peration     |
+    \\  /    A nd           | Copyright (C) 2009-2009 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 "linearSpatial.H"
+#include "addToRunTimeSelectionTable.H"
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+namespace Foam
+{
+
+// * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * //
+
+defineTypeNameAndDebug(linearSpatial, 0);
+addToRunTimeSelectionTable(cellSizeFunction, linearSpatial, dictionary);
+
+
+// * * * * * * * * * * * * * * * * Constructors  * * * * * * * * * * * * * * //
+
+linearSpatial::linearSpatial
+(
+    const dictionary& initialPointsDict,
+    const conformalVoronoiMesh& cvMesh,
+    const searchableSurface& surface
+)
+:
+    cellSizeFunction(typeName, initialPointsDict, cvMesh, surface),
+    referencePoint_(coeffsDict().lookup("referencePoint")),
+    referenceCellSize_(readScalar(coeffsDict().lookup("referenceCellSize"))),
+    direction_(coeffsDict().lookup("direction")),
+    cellSizeGradient_(readScalar(coeffsDict().lookup("cellSizeGradient")))
+{
+    direction_ /= mag(direction_);
+}
+
+
+// * * * * * * * * * * * * Private Member Functions  * * * * * * * * * * * * //
+
+scalar linearSpatial::sizeFunction(const point& pt) const
+{
+    return
+        referenceCellSize_
+      + ((pt - referencePoint_) & direction_)*cellSizeGradient_;
+}
+
+
+// * * * * * * * * * * * * * * * Member Functions  * * * * * * * * * * * * * //
+
+bool linearSpatial::cellSize
+(
+    const point& pt,
+    scalar& size,
+    bool isSurfacePoint
+) const
+{
+    if (sideMode_ == BOTHSIDES || isSurfacePoint)
+    {
+        size = sizeFunction(pt);
+
+        return true;
+    }
+
+    size = 0;
+
+    List<pointIndexHit> hits;
+
+    surface_.findNearest
+    (
+        pointField(1, pt),
+        scalarField(1, sqr(snapToSurfaceTol_)),
+        hits
+    );
+
+    const pointIndexHit& hitInfo = hits[0];
+
+    // If the nearest point is essentially on the surface, do not do a
+    // getVolumeType calculation, as it will be prone to error.
+    if (hitInfo.hit())
+    {
+        size = sizeFunction(pt);
+
+        return true;
+    }
+
+    pointField ptF(1, pt);
+    List<searchableSurface::volumeType> vTL;
+
+    surface_.getVolumeType(ptF, vTL);
+
+    bool functionApplied = false;
+
+    if
+    (
+        sideMode_ == INSIDE
+        && vTL[0] == searchableSurface::INSIDE
+    )
+    {
+        size = sizeFunction(pt);
+
+        functionApplied = true;
+    }
+    else if
+    (
+        sideMode_ == OUTSIDE
+        && vTL[0] == searchableSurface::OUTSIDE
+    )
+    {
+        size = sizeFunction(pt);
+
+        functionApplied = true;
+    }
+
+    return functionApplied;
+
+}
+
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+} // End namespace Foam
+
+// ************************************************************************* //

src/conformalVoronoiMesh/cellSizeControlSurfaces/cellSizeFunction/linearSpatial/linearSpatial.H

@@ -0,0 +1,122 @@
+/*---------------------------------------------------------------------------*\
+  =========                 |
+  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
+   \\    /   O peration     |
+    \\  /    A nd           | Copyright (C) 2009-2009 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::linearSpatial
+
+Description
+
+SourceFiles
+    linearSpatial.C
+
+\*---------------------------------------------------------------------------*/
+
+#ifndef linearSpatial_H
+#define linearSpatial_H
+
+#include "cellSizeFunction.H"
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+namespace Foam
+{
+
+/*---------------------------------------------------------------------------*\
+                         Class linearSpatial Declaration
+\*---------------------------------------------------------------------------*/
+
+class linearSpatial
+:
+    public cellSizeFunction
+{
+
+private:
+
+    // Private data
+
+        //- Reference point for spatial size grading
+        point referencePoint_;
+
+        //- Cell size at reference point
+        scalar referenceCellSize_;
+
+        //- Direction of cell size grading, stored as unit vector, may be
+        //  supplied with any magnitude
+        vector direction_;
+
+        //- Gradient of cell size change in direction of direction_
+        scalar cellSizeGradient_;
+
+
+    // Private Member Functions
+
+        //- Calculate the cell size as a function of the given position
+        scalar sizeFunction(const point& pt) const;
+
+
+public:
+
+    //- Runtime type information
+    TypeName("linearSpatial");
+
+    // Constructors
+
+        //- Construct from components
+        linearSpatial
+        (
+            const dictionary& initialPointsDict,
+            const conformalVoronoiMesh& cvMesh,
+            const searchableSurface& surface
+        );
+
+
+    //- Destructor
+    virtual ~linearSpatial()
+    {}
+
+
+    // Member Functions
+
+        //- Modify scalar argument to the cell size specified by function.
+        //  Return a boolean specifying if the function was used, i.e. false if
+        //  the point was not in range of the surface for a spatially varying
+        //  size.
+        virtual bool cellSize
+        (
+            const point& pt,
+            scalar& size,
+            bool isSurfacePoint = false
+        ) const;
+};
+
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+} // End namespace Foam
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+#endif
+
+// ************************************************************************* //

src/conformalVoronoiMesh/cellSizeControlSurfaces/cellSizeFunction/uniform/uniform.C

@@ -60,14 +60,7 @@ bool uniform::cellSize
     bool isSurfacePoint
 ) const
 {
-    if (isSurfacePoint)
+    if (sideMode_ == BOTHSIDES || isSurfacePoint)
-    {
-        size = cellSize_;
-
-        return true;
-    }
-
-    if (sideMode_ == BOTHSIDES)
     {
         size = cellSize_;