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//
// libavg - Media Playback Engine.
// Copyright (C) 2003-2014 Ulrich von Zadow
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
// version 2 of the License, or (at your option) any later version.
//
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
//
// Current versions can be found at www.libavg.de
//
#include "TrackerTouchStatus.h"
#include "TouchEvent.h"
#include "../base/Logger.h"
#include "../base/ObjectCounter.h"
#include "../base/Exception.h"
#include <math.h>
using namespace std;
namespace avg {
int TrackerTouchStatus::s_LastID = 0;
TrackerTouchStatus::TrackerTouchStatus(BlobPtr pFirstBlob, long long time,
DeDistortPtr pDeDistort, const FRect& displayROI, Event::Source source)
: TouchStatus(createEvent(source, Event::CURSOR_DOWN, ++s_LastID, pFirstBlob, time,
pDeDistort, displayROI)),
m_Source(source),
m_pDeDistort(pDeDistort),
m_DisplayROI(displayROI),
m_Stale(false),
m_bGone(false),
m_ID(s_LastID),
m_pBlob(pFirstBlob),
m_LastTime(time),
m_LastCenter(pFirstBlob->getCenter())
{
AVG_ASSERT(m_Source == Event::TOUCH || m_Source == Event::TRACK);
ObjectCounter::get()->incRef(&typeid(*this));
}
TrackerTouchStatus::~TrackerTouchStatus()
{
ObjectCounter::get()->decRef(&typeid(*this));
}
void TrackerTouchStatus::blobChanged(BlobPtr pNewBlob, long long time, bool bKeepEvent)
{
AVG_ASSERT(m_pBlob);
AVG_ASSERT(pNewBlob);
if (!m_bGone) {
glm::vec2 c = pNewBlob->getCenter();
bool bPosChanged;
if (bKeepEvent) {
bPosChanged = true;
} else {
bPosChanged = (glm::length(c-m_LastCenter) > 1);
}
if (bPosChanged) {
m_LastCenter = pNewBlob->getCenter();
TouchEventPtr pEvent = createEvent(Event::CURSOR_MOTION, pNewBlob, time);
pushEvent(pEvent, false);
}
m_pBlob = pNewBlob;
m_Stale = false;
m_LastTime = time;
}
};
void TrackerTouchStatus::blobGone()
{
if (!m_bGone) {
TouchEventPtr pEvent = createEvent(Event::CURSOR_UP, m_pBlob, m_LastTime+1);
pushEvent(pEvent, false);
m_bGone = true;
}
}
void TrackerTouchStatus::setStale()
{
m_Stale = true;
}
bool TrackerTouchStatus::isStale()
{
return m_Stale;
}
TouchEventPtr TrackerTouchStatus::createEvent(Event::Source source, Event::Type type,
int id, BlobPtr pBlob, long long time, DeDistortPtr pDeDistort,
const FRect& displayROI)
{
glm::vec2 blobOffset = pDeDistort->getActiveBlobArea(displayROI).tl;
glm::vec2 pt = pBlob->getCenter() + blobOffset;
glm::dvec2 screenpos(pDeDistort->transformBlobToScreen(glm::dvec2(pt)));
IntPoint pos(int(screenpos.x+0.5), int(screenpos.y+0.5));
return TouchEventPtr(new TouchEvent(id, type, pBlob, pos, source));
}
TouchEventPtr TrackerTouchStatus::createEvent(Event::Type type, BlobPtr pBlob,
long long time)
{
return createEvent(m_Source, type, m_ID, pBlob, time, m_pDeDistort, m_DisplayROI);
}
}
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