19db0c1674
Vivek's email to osg-submissions: "I'm happy to release the osgdragger nodekit to the OSG community. I implemented the nodekit for my company, Fugro-Jason Inc., and they have kindly agreed to open source it. The nodekit contains a few draggers but it should be easy to build new draggers on top of it. The design of the nodekit is based on a SIGGRAPH 2002 course - "Design and Implementation of Direct Manipulation in 3D". You can find the course notes at http://www.pauliface.com/Sigg02/index.html. Reading pages 20 - 29 of the course notes should give you a fair understanding of how the nodekit works. The source code also contains an example of how to use the draggers."
125 lines
3.8 KiB
C++
125 lines
3.8 KiB
C++
/* -*-c++-*- OpenSceneGraph - Copyright (C) 1998-2006 Robert Osfield
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*
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* This library is open source and may be redistributed and/or modified under
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* the terms of the OpenSceneGraph Public License (OSGPL) version 0.0 or
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* (at your option) any later version. The full license is in LICENSE file
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* included with this distribution, and on the openscenegraph.org website.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* OpenSceneGraph Public License for more details.
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*/
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//osgManipulator - Copyright (C) 2007 Fugro-Jason B.V.
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#include <osgManipulator/CommandManager>
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#include <osgManipulator/Command>
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using namespace osgManipulator;
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CommandManager::CommandManager()
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{
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}
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CommandManager::~CommandManager()
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{
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}
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bool CommandManager::connect(Dragger& dragger, Selection& selection)
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{
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dragger.setCommandManager(this);
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// Check to see if the selection is already associated with the dragger.
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if (_draggerSelectionMap.count(&dragger) > 0)
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{
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std::pair<DraggerSelectionMap::iterator,DraggerSelectionMap::iterator> s;
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s = _draggerSelectionMap.equal_range(&dragger);
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for (DraggerSelectionMap::iterator iter = s.first; iter != s.second; ++iter)
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{
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if (iter->second == &selection)
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return false;
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}
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}
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// Associate selection with dragger
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_draggerSelectionMap.insert(DraggerSelectionMap::value_type(&dragger,&selection));
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return true;
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}
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bool CommandManager::connect(Dragger& dragger, Constraint& constraint)
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{
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dragger.setCommandManager(this);
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// Check to see if the selection is already associated with the dragger.
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if (_draggerConstraintMap.count(&dragger) > 0)
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{
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std::pair<DraggerConstraintMap::iterator,DraggerConstraintMap::iterator> s;
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s = _draggerConstraintMap.equal_range(&dragger);
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for (DraggerConstraintMap::iterator iter = s.first; iter != s.second; ++iter)
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{
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if (iter->second == &constraint)
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return false;
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}
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}
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// Associate selection with dragger
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_draggerConstraintMap.insert(DraggerConstraintMap::value_type(&dragger,&constraint));
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return true;
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}
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bool CommandManager::disconnect(Dragger& dragger)
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{
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_draggerSelectionMap.erase(&dragger);
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_draggerConstraintMap.erase(&dragger);
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return true;
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}
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void CommandManager::dispatch(MotionCommand& command)
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{
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command.execute();
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}
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void CommandManager::addSelectionsToCommand(MotionCommand& command, Dragger& dragger)
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{
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// Apply constraints to the command.
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if (_draggerConstraintMap.count(&dragger) > 0)
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{
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// Get all the selections assoicated with this dragger.
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std::pair<DraggerConstraintMap::iterator,DraggerConstraintMap::iterator> s;
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s = _draggerConstraintMap.equal_range(&dragger);
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for (DraggerConstraintMap::iterator iter = s.first; iter != s.second; ++iter)
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{
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// Add the selection to the command.
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if (iter->second.valid())
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{
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command.applyConstraint(iter->second.get());
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}
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}
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}
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// Add the dragger to the selection list first.
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command.addSelection(&dragger);
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// Add the remaining selections.
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if (_draggerSelectionMap.count(&dragger) > 0)
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{
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// Get all the selections assoicated with this dragger.
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std::pair<DraggerSelectionMap::iterator,DraggerSelectionMap::iterator> s;
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s = _draggerSelectionMap.equal_range(&dragger);
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for (DraggerSelectionMap::iterator iter = s.first; iter != s.second; ++iter)
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{
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// Add the selection to the command.
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if (iter->second.valid())
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{
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command.addSelection(iter->second.get());
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}
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}
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}
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}
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