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authorAdrian Kummerlaender2019-06-24 14:43:36 +0200
committerAdrian Kummerlaender2019-06-24 14:43:36 +0200
commit94d3e79a8617f88dc0219cfdeedfa3147833719d (patch)
treec1a6894679563e271f5c6ea7a17fa3462f7212a3 /src/utilities/hyperplaneLattice3D.h
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+/* This file is part of the OpenLB library
+ *
+ * Copyright (C) 2017 Adrian Kummerlaender
+ * E-mail contact: info@openlb.net
+ * The most recent release of OpenLB can be downloaded at
+ * <http://www.openlb.net/>
+ *
+ * This program 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.
+ *
+ * This program 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 this program; if not, write to the Free
+ * Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ * Boston, MA 02110-1301, USA.
+*/
+
+#ifndef HYPERPLANE_LATTICE_3D_H
+#define HYPERPLANE_LATTICE_3D_H
+
+#include "core/vector.h"
+#include "geometry/cuboidGeometry3D.h"
+#include "hyperplane3D.h"
+
+namespace olb {
+
+/// Parametrization of a hyperplane lattice.
+/**
+ * i.e. the resolution / grid width of the discretization of a given hyperplane.
+ *
+ * This class provides a common interface for describing how to discretize the intersection
+ * of a hyperplane given by Hyperplane3D<T> and the mother cuboid of CuboidGeometry3D<T>.
+ **/
+template <typename T>
+class HyperplaneLattice3D {
+private:
+ /// \return max possible distance
+ int computeMaxLatticeDistance(Cuboid3D<T>&& cuboid) const;
+ /// Compute _hyperplane.origin, _nx, _ny so that the cuboid is right inside the geometry
+ void constructCuboid(CuboidGeometry3D<T>& geometry, int maxLatticeDistance);
+ /// Update _h, _nx, _ny, _hyperplane.(u,v) so that the longest side length matches the given resolution
+ void setToResolution(int resolution);
+
+protected:
+ const Hyperplane3D<T> _hyperplane;
+
+ /// Origin vector of the lattice
+ /**
+ * Note that this origin is set to a outermost point of the intersection between
+ * cuboid geometry and hyperplane. Thus it is different from the Hyperplane3D<T>
+ * origin vector in the general case.
+ **/
+ Vector<T,3> _origin;
+ /// Span vector of the lattice, normalized to grid width _h
+ Vector<T,3> _u;
+ /// Span vector of the lattice, normalized to grid width _h
+ Vector<T,3> _v;
+
+ /// Distance between discrete lattice points
+ T _h;
+ /// Number of lattice points in the direction of _u
+ int _nx;
+ /// Number of lattice points in the direction of _v
+ int _ny;
+
+public:
+ /// Constructor for automatic discretization.
+ /**
+ * i.e. the grid width is set to CuboidGeometry3D<T>::getMinDeltaR.
+ **/
+ HyperplaneLattice3D(CuboidGeometry3D<T>& geometry,
+ Hyperplane3D<T> hyperplane);
+ /// Constructor for discretization of a given resolution.
+ HyperplaneLattice3D(CuboidGeometry3D<T>& geometry,
+ Hyperplane3D<T> hyperplane,
+ int resolution);
+ /// Constructor for discretization of a given grid width.
+ HyperplaneLattice3D(CuboidGeometry3D<T>& geometry,
+ Hyperplane3D<T> hyperplane,
+ T h);
+
+ /// Constructor for manual discretization
+ /**
+ * \param hyperplane Hyperplane in 3D space
+ * \param h lattice point spacing
+ * \param nx X axis resolution
+ * \param ny Y axis resolution
+ **/
+ HyperplaneLattice3D(Hyperplane3D<T> hyperplane,
+ T h, int nx, int ny);
+
+ HyperplaneLattice3D(const HyperplaneLattice3D&) = default;
+
+ const Hyperplane3D<T>& getHyperplane() const;
+
+ /// Transform 2d lattice coordinates to their physical 3d location
+ Vector<T,3> getPhysR(const int& planeX, const int& planeY) const;
+
+ /// \return _nx
+ int getNx() const;
+ /// \return _ny
+ int getNy() const;
+ /// \return _h
+ T getPhysSpacing() const;
+
+ /// \return _origin
+ Vector<T,3> getPhysOrigin() const;
+ /// \return _u
+ Vector<T,3> getVectorU() const;
+ /// \return _v
+ Vector<T,3> getVectorV() const;
+
+};
+
+}
+
+#endif