1 // Copyright (C) 2014-2017 CEA/DEN, EDF R&D
3 // This library is free software; you can redistribute it and/or
4 // modify it under the terms of the GNU Lesser General Public
5 // License as published by the Free Software Foundation; either
6 // version 2.1 of the License, or (at your option) any later version.
8 // This library is distributed in the hope that it will be useful,
9 // but WITHOUT ANY WARRANTY; without even the implied warranty of
10 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
11 // Lesser General Public License for more details.
13 // You should have received a copy of the GNU Lesser General Public
14 // License along with this library; if not, write to the Free Software
15 // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
17 // See http://www.salome-platform.org/ or
18 // email : webmaster.salome@opencascade.com<mailto:webmaster.salome@opencascade.com>
21 #ifndef SketchSolver_Manager_H_
22 #define SketchSolver_Manager_H_
24 #include <SketchSolver_Group.h>
26 #include <Events_Listener.h>
32 class GeomDataAPI_Point2D;
33 class SketchPlugin_Constraint;
35 /** \class SketchSolver_Manager
37 * \brief Listens the changes of SketchPlugin features and transforms the Constraint
38 * feature into the format understandable by sketch solver.
40 * \remark This is a singleton.
42 class SketchSolver_Manager : public Events_Listener
45 /** \brief Main method to create constraint manager
46 * \return pointer to the singleton
48 static SketchSolver_Manager* instance();
50 /** \brief Implementation of Event Listener method
51 * \param[in] theMessage the data of the event
53 virtual void processEvent(const std::shared_ptr<Events_Message>& theMessage);
56 * The solver needs all the updated objects are transfered in one group, not one by one.
57 * This iscreases performance and avoids problems in resolve of only part of the made updates.
59 virtual bool groupMessages();
62 SketchSolver_Manager();
63 ~SketchSolver_Manager();
65 /** \brief Adds or updates a constraint or an entity in the suitable group
66 * \param[in] theFeature sketch feature to be changed
67 * \return \c true if the feature changed successfully
69 bool updateFeature(const std::shared_ptr<SketchPlugin_Feature>& theFeature);
71 /** \brief Move feature
72 * \param[in] theMovedFeature dragged sketch feature
73 * \param[in] theFromPoint original position of the feature
74 * \param[in] theToPoint prefereble position of the feature (current position of the mouse)
75 * \return \c true if the feature has been changed successfully
77 bool moveFeature(const std::shared_ptr<SketchPlugin_Feature>& theMovedFeature,
78 const std::shared_ptr<GeomAPI_Pnt2d>& theFromPoint,
79 const std::shared_ptr<GeomAPI_Pnt2d>& theToPoint);
81 /** \brief Move feature using its moved attribute
82 * \param[in] theMovedAttribute dragged point attribute of sketch feature
83 * \param[in] theFromPoint original position of the moved point
84 * \param[in] theToPoint prefereble position (current position of the mouse)
85 * \return \c true if the attribute owner has been changed successfully
87 bool moveAttribute(const std::shared_ptr<GeomDataAPI_Point2D>& theMovedAttribute,
88 const std::shared_ptr<GeomAPI_Pnt2d>& theFromPoint,
89 const std::shared_ptr<GeomAPI_Pnt2d>& theToPoint);
91 /** \brief Removes a constraint from the manager
92 * \param[in] theConstraint constraint to be removed
93 * \return \c true if the constraint removed successfully
95 bool removeConstraint(std::shared_ptr<SketchPlugin_Constraint> theConstraint);
97 /** \brief Goes through the list of groups and solve the constraints
98 * \return \c true, if groups are resolved, and features should be updated
99 * (send the Update event)
101 bool resolveConstraints();
104 /** \brief Searches group which interact with specified feature
105 * \param[in] theFeature object to be found
106 * \return Pointer to corresponding group or NULL if the group cannot be created.
108 SketchGroupPtr findGroup(std::shared_ptr<SketchPlugin_Feature> theFeature);
110 /// \brief Stop sending the Update event until all features updated
111 /// \return \c true, if the last flushed event is Update
112 bool stopSendUpdate() const;
113 /// \brief Allow to send the Update event
114 void allowSendUpdate() const;
116 /// \brief Allow send events about changing features in groups
117 void releaseFeaturesIfEventsBlocked() const;
120 std::list<SketchGroupPtr> myGroups; ///< Groups of constraints
121 /// true if computation is performed and all "updates" are generated by this algo
122 /// and needs no recomputation