build 180708. model instance position and rotation adjustment in scenery editor, support for event launcher activation with mouse click, minor refactoring

sceneeditor.h

@@ -0,0 +1,73 @@
+/*
+This Source Code Form is subject to the
+terms of the Mozilla Public License, v.
+2.0. If a copy of the MPL was not
+distributed with this file, You can
+obtain one at
+http://mozilla.org/MPL/2.0/.
+*/
+
+#pragma once
+
+#include "scenenode.h"
+
+namespace scene {
+
+class basic_editor {
+
+public:
+// methods
+    bool
+        on_mouse_button( int const Button, int const Action );
+    bool
+        on_mouse_move( double const Mousex, double const Mousey );
+    scene::basic_node const *
+        node() const {
+            return m_node; }
+private:
+// types
+    struct node_snapshot {
+
+        scene::basic_node *node;
+        std::string data;
+
+        node_snapshot( scene::basic_node *Node ) :
+            node( Node ) {
+            if( Node != nullptr ) {
+                Node->export_as_text( data ); } };
+    };
+    friend bool operator==( basic_editor::node_snapshot const &Left, basic_editor::node_snapshot const &Right );
+    friend bool operator!=( basic_editor::node_snapshot const &Left, basic_editor::node_snapshot const &Right );
+// methods
+    bool
+        mode_translation() const;
+    bool
+        mode_translation_vertical() const;
+    void
+        translate( glm::dvec3 const &Location );
+    void
+        translate( float const Offset );
+    void
+        translate_instance( TAnimModel *Instance, glm::dvec3 const &Location );
+    void
+        translate_instance( TAnimModel *Instance, float const Offset );
+    void
+        rotate( glm::vec3 const &Angle );
+    void
+        rotate_instance( TAnimModel *Instance, glm::vec3 const &Angle );
+// members
+    scene::basic_node *m_node; // temporary helper, currently selected scene node
+    node_snapshot m_nodesnapshot { nullptr }; // currently selected scene node in its pre-modified state
+    glm::dvec2 m_mouseposition { 0.0 };
+    bool m_mouseleftbuttondown { false };
+
+};
+
+inline bool operator==( basic_editor::node_snapshot const &Left, basic_editor::node_snapshot const &Right ) { return ( ( Left.node == Right.node ) && ( Left.data == Right.data ) ); }
+inline bool operator!=( basic_editor::node_snapshot const &Left, basic_editor::node_snapshot const &Right ) { return ( !( Left == Right ) ); }
+
+extern basic_editor Editor;
+
+} // scene
+
+//---------------------------------------------------------------------------