From 94d3e79a8617f88dc0219cfdeedfa3147833719d Mon Sep 17 00:00:00 2001
From: Adrian Kummerlaender
Date: Mon, 24 Jun 2019 14:43:36 +0200
Subject: Initialize at openlb-1-3

---
 src/io/colormaps.h | 135 +++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 135 insertions(+)
 create mode 100644 src/io/colormaps.h

(limited to 'src/io/colormaps.h')

diff --git a/src/io/colormaps.h b/src/io/colormaps.h
new file mode 100644
index 0000000..673425d
--- /dev/null
+++ b/src/io/colormaps.h
@@ -0,0 +1,135 @@
+/*  This file is part of the OpenLB library
+ *
+ *  Copyright (C) 2007 Jonas Latt
+ *  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 COLORMAPS_H
+#define COLORMAPS_H
+
+#include <string>
+#include <vector>
+
+namespace olb {
+
+namespace graphics {
+
+template <typename T>
+struct ScalarFunction {
+  virtual ~ScalarFunction() { }
+  virtual T operator() (T x) const =0;
+  virtual ScalarFunction<T>* clone() const=0;
+};
+
+template <typename T>
+class LinearFunction : public ScalarFunction<T> {
+public:
+  LinearFunction(T x1_, T x2_, T y1_, T y2_);
+  T operator() (T x) const override;
+  LinearFunction<T>* clone() const override;
+private:
+  T x1, x2, y1, y2;
+};
+
+template <typename T>
+class PowerLawFunction : public ScalarFunction<T> {
+public:
+  PowerLawFunction(T x1_, T x2_, T y1_, T y2_, T b_);
+  T operator() (T x) const override;
+  PowerLawFunction<T>* clone() const override;
+private:
+  T x1, x2, y1, y2;
+  T b;
+};
+
+template <typename T>
+struct Piece {
+  Piece(T closedBegin_, T openEnd_) : closedBegin(closedBegin_), openEnd(openEnd_)
+  {
+  }
+  T closedBegin, openEnd;
+};
+
+template <typename T>
+class PiecewiseFunction : public ScalarFunction<T> {
+public:
+  PiecewiseFunction() { }
+  ~PiecewiseFunction() override;
+  PiecewiseFunction(PiecewiseFunction<T> const& rhs);
+  PiecewiseFunction<T>& operator=(PiecewiseFunction<T> const& rhs);
+  void swap(PiecewiseFunction<T>& rhs);
+  void addPiece(Piece<T> piece, ScalarFunction<T>* f);
+  T operator() (T x) const override;
+  PiecewiseFunction<T>* clone() const override;
+private:
+  std::vector<Piece<T> > pieces;
+  std::vector<ScalarFunction<T>*> functions;
+};
+
+template <typename T>
+struct rgb {
+  rgb(T r_, T g_, T b_) : r(r_), g(g_), b(b_)
+  {
+  }
+  T r,g,b;
+};
+
+template <typename T>
+class ColorMap {
+public:
+  ColorMap(PiecewiseFunction<T> const& red_,
+           PiecewiseFunction<T> const& green_,
+           PiecewiseFunction<T> const& blue_);
+  rgb<T> get(T x) const;
+private:
+  PiecewiseFunction<T> red, green, blue;
+};
+
+namespace mapGenerators {
+
+template <typename T> PiecewiseFunction<T> generateEarthRed();
+template <typename T> PiecewiseFunction<T> generateEarthGreen();
+template <typename T> PiecewiseFunction<T> generateEarthBlue();
+
+template <typename T> PiecewiseFunction<T> generateWaterRed();
+template <typename T> PiecewiseFunction<T> generateWaterGreen();
+template <typename T> PiecewiseFunction<T> generateWaterBlue();
+
+template <typename T> PiecewiseFunction<T> generateAirRed();
+template <typename T> PiecewiseFunction<T> generateAirGreen();
+template <typename T> PiecewiseFunction<T> generateAirBlue();
+
+template <typename T> PiecewiseFunction<T> generateFireRed();
+template <typename T> PiecewiseFunction<T> generateFireGreen();
+template <typename T> PiecewiseFunction<T> generateFireBlue();
+
+template <typename T> PiecewiseFunction<T> generateLeeLooRed();
+template <typename T> PiecewiseFunction<T> generateLeeLooGreen();
+template <typename T> PiecewiseFunction<T> generateLeeLooBlue();
+
+template <typename T> ColorMap<T> generateMap(std::string mapName);
+
+} // namespace mapGenerators
+
+}  // namespace graphics
+
+}  // namespace olb
+
+#endif
-- 
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