#2519 Mohr Circle: Create plot widget

ApplicationCode/UserInterface/RiuMohrsCirclePlot.h

@@ -0,0 +1,72 @@
+/////////////////////////////////////////////////////////////////////////////////
+//
+//  Copyright (C) 2018     Statoil ASA
+//
+//  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 "qwt_plot.h"
+#include "qwt_plot_marker.h"
+
+#include <QWidget>
+
+#include <array>
+
+//==================================================================================================
+//
+//
+//
+//==================================================================================================
+class RiuMohrsCirclePlot : public QwtPlot
+{
+    Q_OBJECT
+
+public:
+    RiuMohrsCirclePlot(QWidget* parent);
+    ~RiuMohrsCirclePlot();
+
+    void setPrincipals(double p1, double p2, double p3);
+    void setPrincipalsAndRedrawCircles(double p1, double p2, double p3);
+
+protected:
+    virtual QSize sizeHint() const override;
+    virtual QSize minimumSizeHint() const override;
+
+    void redrawCircles();
+    void deleteCircles();
+
+private:
+    struct MohrCircle
+    {
+        MohrCircle(size_t component, double radius, double centerX)
+            : component(component), radius(radius), centerX(centerX) {}
+        MohrCircle() {};
+        size_t component; //1, 2 or 3
+        double radius;
+        double centerX;
+    };
+private:
+    void setDefaults();
+    void createMohrCircles();
+
+private:
+    double m_principal1;
+    double m_principal2;
+    double m_principal3;
+    std::array<MohrCircle, 3> m_mohrCircles;
+    std::vector<QwtPlotMarker*> m_mohrCirclesMarkers;
+
+};