Added RivTernaryScalarMapper and unit test

ApplicationCode/ModelVisualization/RivTernaryScalarMapper.h

@@ -0,0 +1,47 @@
+/////////////////////////////////////////////////////////////////////////////////
+//
+//  Copyright (C) Statoil ASA, Ceetron Solutions AS
+// 
+//  ResInsight 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 3 of the License, or
+//  (at your option) any later version.
+// 
+//  ResInsight 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 at <http://www.gnu.org/licenses/gpl.html> 
+//  for more details.
+//
+/////////////////////////////////////////////////////////////////////////////////
+
+#pragma once
+
+#include "cvfBase.h"
+#include "cvfObject.h"
+#include "cvfVector2.h"
+#include "cvfColor3.h"
+
+namespace cvf
+{
+	class TextureImage;
+}
+
+//==================================================================================================
+///
+//==================================================================================================
+class RivTernaryScalarMapper : public cvf::Object
+{
+public:
+	RivTernaryScalarMapper(const cvf::Color3f& undefScalarColor, float opacityLevel);
+
+	cvf::Vec2f	mapToTextureCoord(double soil, double swat, bool isTransparent);
+	bool		updateTexture(cvf::TextureImage* image);
+
+private:
+	cvf::Color3f	m_undefScalarColor;
+	float			m_opacityLevel;
+	cvf::Vec2ui		m_textureSize;
+};
+