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config.cpp
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config.cpp
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/*
* Copyright (c)
* 2008-2009, Thomas McGuire <thomas.mcguire@student.uni-siegen.de>
* 2010, Stefan Eilemann <eile@equalizergraphics.com>
* 2010, Sarah Amsellem <sarah.amsellem@gmail.com>
* 2012, Daniel Nachbaur <danielnachbaur@gmail.com>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* - Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
* - Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* - Neither the name of Eyescale Software GmbH nor the names of its
* contributors may be used to endorse or promote products derived from this
* software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#include "util.h"
#include "sceneReader.h"
#include <osg/Math>
namespace osgScaleViewer
{
static const float maxVerticalAngle = osg::PI;
static const float minVerticalAngle = 0.2f;
static const float mouseViewSpeed = 0.005f;
static const float defaultCameraHorizontalAngle( 0.0f );
static const float defaultCameraVerticalAngle( osg::PI / 2.0f );
static const eq::Vector3f defaultCameraViewingDirection( 0., 0., -1. );
Config::Config( eq::ServerPtr parent )
: eq::Config( parent )
, _moveDirection( 0.0f, 0.0f, 0.0f )
, _cameraWalkingVector( 0., 0., -1. )
, _pointerXDiff( 0.0f )
, _pointerYDiff( 0.0f )
, _cameraAngleHor( defaultCameraHorizontalAngle )
, _cameraAngleVer( defaultCameraVerticalAngle )
{
}
bool Config::init()
{
// init tracker
std::string trackerPort = _initData.getTrackerPort();
if( !trackerPort.empty( ))
{
if( !_tracker.init( trackerPort ))
LBWARN << "Failed to initialize tracker" << std::endl;
else
{
// Set up position of tracking system wrt world space
// Note: this depends on the physical installation.
eq::Matrix4f matrix( eq::Matrix4f::IDENTITY );
matrix.scale( 1.f, 1.f, -1.f );
_tracker.setWorldToEmitter( matrix );
matrix = eq::Matrix4f::IDENTITY;
matrix.rotate_z( -M_PI_2 );
_tracker.setSensorToObject( matrix );
LBINFO << "Tracker initialized" << std::endl;
}
}
registerObject( &_frameData );
_initData.setFrameDataID( _frameData.getID( ));
registerObject( &_initData );
return eq::Config::init( _initData.getID( ));
}
bool Config::exit()
{
bool ret = eq::Config::exit();
_initData.setFrameDataID( eq::UUID::ZERO );
deregisterObject( &_initData );
deregisterObject( &_frameData );
return ret;
}
void Config::updateFrameData( float elapsed )
{
// Update the viewing direction based on the mouse movement
_cameraAngleHor += mouseViewSpeed * _pointerXDiff;
if( _cameraAngleHor > 2 * osg::PI || _cameraAngleHor < -2 * osg::PI )
_cameraAngleHor = 0.0f;
_cameraAngleVer += mouseViewSpeed * _pointerYDiff;
if( _cameraAngleVer > maxVerticalAngle )
_cameraAngleVer = maxVerticalAngle;
if( _cameraAngleVer < minVerticalAngle )
_cameraAngleVer = minVerticalAngle;
_pointerXDiff = _pointerYDiff = 0.0f;
eq::Vector3f cameraViewingDirection;
cameraViewingDirection.x() = sin( _cameraAngleHor ) * sin( _cameraAngleVer );
cameraViewingDirection.z() = -cos( _cameraAngleHor ) * sin( _cameraAngleVer );
cameraViewingDirection.y() = cos( _cameraAngleVer );
_cameraWalkingVector = cameraViewingDirection;
_cameraWalkingVector.y() = 0.0f;
// save camera data to frame data and update the camera position
_frameData.setCameraPosition( _frameData.getCameraPosition() +
_moveDirection * elapsed );
_frameData.setCameraLookAtPoint( _frameData.getCameraPosition() +
cameraViewingDirection );
_frameData.setCameraUpVector( eq::Vector3f( 0., 1., 0. ));
}
uint32_t Config::startFrame()
{
// update head position
if( _tracker.isRunning( ))
{
_tracker.update();
const eq::Matrix4f& headMatrix = _tracker.getMatrix();
_setHeadMatrix( headMatrix );
}
float elapsed = _clock.getTimef();
_clock.reset();
updateFrameData( elapsed );
const eq::uint128_t version = _frameData.commit();
return eq::Config::startFrame( version );
}
void Config::setInitData( const InitData& data )
{
_initData = data;
}
const InitData& Config::getInitData() const
{
return _initData;
}
bool Config::mapData( const eq::uint128_t& initDataID )
{
if( !_initData.isAttached( ))
{
LBCHECK( mapObject( &_initData, initDataID ) );
unmapObject( &_initData );
}
else
{
LBASSERT( _initData.getID() == initDataID );
}
return true;
}
bool Config::handleEvent( eq::EventCommand command )
{
const float moveSpeed = .1f;
const eq::Event& event = command.get< eq::Event >();
switch( command.getEventType( ))
{
// set mMoveDirection to a null vector after a key is released
// so that the updating of the camera position stops
case eq::Event::KEY_RELEASE:
if ( event.keyPress.key >= 261 &&
event.keyPress.key <= 266 )
_moveDirection = eq::Vector3f( 0, 0, 0 );
break;
// change mMoveDirection when the appropriate key is pressed
case eq::Event::KEY_PRESS:
switch ( event.keyPress.key )
{
case eq::KC_LEFT:
_moveDirection = vmml::normalize( orthographicVector(
_cameraWalkingVector )) * moveSpeed;
return true;
case eq::KC_UP:
_moveDirection.y() = moveSpeed;
return true;
case eq::KC_RIGHT:
_moveDirection = -vmml::normalize( orthographicVector(
_cameraWalkingVector )) * moveSpeed;
return true;
case eq::KC_DOWN:
_moveDirection.y() = -moveSpeed;
return true;
case eq::KC_PAGE_UP:
_moveDirection = vmml::normalize( _cameraWalkingVector )
* moveSpeed;
return true;
case eq::KC_PAGE_DOWN:
_moveDirection = -vmml::normalize( _cameraWalkingVector ) *
moveSpeed;
return true;
case 's':
_frameData.toggleStatistics();
}
break;
// turn left and right, up and down with mouse pointer
case eq::Event::CHANNEL_POINTER_MOTION:
if ( event.pointerMotion.buttons == eq::PTR_BUTTON1 &&
event.pointerMotion.x <= event.context.pvp.w &&
event.pointerMotion.x >= 0 &&
event.pointerMotion.y <= event.context.pvp.h &&
event.pointerMotion.y >= 0 )
{
_pointerXDiff += event.pointerMotion.dx;
_pointerYDiff += event.pointerMotion.dy;
return true;
}
break;
}
// let Equalizer handle any events we don't handle ourselves here, like the
// escape key for closing the application.
return eq::Config::handleEvent( command );
}
// Note: real applications would use one tracking device per observer
void Config::_setHeadMatrix( const eq::Matrix4f& matrix )
{
const eq::Observers& observers = getObservers();
for( eq::Observers::const_iterator i = observers.begin();
i != observers.end(); ++i )
{
(*i)->setHeadMatrix( matrix );
}
}
const eq::Matrix4f& Config::_getHeadMatrix() const
{
const eq::Observers& observers = getObservers();
if( observers.empty( ))
return eq::Matrix4f::IDENTITY;
return observers[0]->getHeadMatrix();
}
}