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+/* This file is part of the Gudhi Library - https://gudhi.inria.fr/ - which is released under MIT.
+ * See file LICENSE or go to https://gudhi.inria.fr/licensing/ for full license details.
+ * Author(s): David Salinas
+ *
+ * Copyright (C) 2014 Inria
+ *
+ * Modification(s):
+ * - YYYY/MM Author: Description of the modification
+ */
+
+#ifndef VIEW_VIEWER_H_
+#define VIEW_VIEWER_H_
+
+#include <QGLViewer/qglviewer.h>
+
+#include <vector>
+
+#include "View_parameter.h"
+#include "model/Complex_typedefs.h"
+#include "Color.h"
+#include "Viewer_instructor.h"
+
+class Viewer_instructor;
+
+class Viewer : public QGLViewer {
+ Q_OBJECT
+
+ Viewer_instructor * instructor;
+
+ /**
+ * light angles
+ */
+ double theta, phi;
+ typedef Complex::GT Gudhi_kernel;
+ typedef Gudhi_kernel::Point_3 Point_3;
+
+ public:
+ Viewer(QWidget* parent);
+
+ void set_instructor(Viewer_instructor* instructor_);
+
+ void show_entire_scene();
+
+ void draw();
+
+ void set_bounding_box(const Point_3 & lower_left, const Point_3 & upper_right);
+
+ void update_GL();
+
+ void init_scene();
+
+ void init_light();
+
+ void set_light();
+
+ void set_light_direction(double theta, double phi);
+
+ /**
+ * set the light in the direction of the observer
+ */
+ void set_light_direction();
+
+ protected:
+ virtual void postSelection(const QPoint& point);
+
+ public:
+ ////////////////////////
+ // draw
+ ////////////////////////
+ void set_size_point(double size_points);
+
+ void set_color(const Color& color);
+
+ void draw_point(const Point_3& p, const Color& color, double size_points);
+
+ void begin_draw_points(double size, bool light = false);
+
+ void draw_points(const Point_3 & point);
+
+ void end_draw_points();
+
+ void draw_edge(const Point_3 &a, const Point_3 &b, const Color& color, double size);
+
+ void begin_draw_edges(double size, bool light = false);
+
+ void draw_edges(const Point_3 &a, const Point_3 &b);
+
+ void end_draw_edges();
+
+ void begin_draw_triangles(double size, bool light, bool transparent = false);
+
+ void draw_triangles(const Point_3& p1, const Point_3& p2, const Point_3& p3);
+
+ // todo remove
+ void draw_triangles(const std::vector<Point_3*>& points);
+
+ void end_draw_triangles();
+
+
+ signals:
+ void click(const Point_3& position);
+};
+
+#endif // VIEW_VIEWER_H_