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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
//
// Original author of this file is igor@c-base.org
//
#include "TouchEvent.h"
#include "Player.h"
#include "AVGNode.h"
#include "../graphics/Bitmap.h"
#include "../graphics/Filterfill.h"
#include "../graphics/Pixel8.h"
#include "../base/Exception.h"
#include "../base/Logger.h"
using namespace std;
namespace avg {
TouchEvent::TouchEvent(int id, Type eventType, BlobPtr pBlob, const IntPoint& pos,
Source source, const glm::vec2& speed)
: CursorEvent(id, eventType, pos, source),
m_pBlob(pBlob),
m_bHasHandOrientation(false)
{
setSpeed(speed);
if (pBlob) {
m_Orientation = pBlob->getOrientation();
m_Area = pBlob->getArea();
m_Center = pBlob->getCenter();
m_Eccentricity = pBlob->getEccentricity();
const glm::vec2& axis0 = m_pBlob->getScaledBasis(0);
const glm::vec2& axis1 = m_pBlob->getScaledBasis(1);
if (glm::length(axis0) > glm::length(axis1)) {
m_MajorAxis = axis0;
m_MinorAxis = axis1;
} else {
m_MajorAxis = axis1;
m_MinorAxis = axis0;
}
} else {
m_Orientation = 0;
m_Area = 20;
m_Center = glm::vec2(0, 0);
m_Eccentricity = 0;
m_MajorAxis = glm::vec2(5, 0);
m_MinorAxis = glm::vec2(0, 5);
}
}
TouchEvent::TouchEvent(int id, Type eventType, const IntPoint& pos, Source source,
const glm::vec2& speed, float orientation, float area, float eccentricity,
glm::vec2 majorAxis, glm::vec2 minorAxis)
: CursorEvent(id, eventType, pos, source),
m_Orientation(orientation),
m_Area(area),
m_Eccentricity(eccentricity),
m_MajorAxis(majorAxis),
m_MinorAxis(minorAxis)
{
setSpeed(speed);
}
TouchEvent::TouchEvent(int id, Type eventType, const IntPoint& pos, Source source,
const glm::vec2& speed)
: CursorEvent(id, eventType, pos, source),
m_Orientation(0),
m_Area(20),
m_Eccentricity(0),
m_MajorAxis(5, 0),
m_MinorAxis(0, 5)
{
setSpeed(speed);
}
TouchEvent::~TouchEvent()
{
}
CursorEventPtr TouchEvent::cloneAs(Type eventType) const
{
TouchEventPtr pClone(new TouchEvent(*this));
pClone->m_Type = eventType;
return pClone;
}
float TouchEvent::getOrientation() const
{
return m_Orientation;
}
float TouchEvent::getArea() const
{
return m_Area;
}
const glm::vec2 & TouchEvent::getCenter() const
{
return m_Center;
}
float TouchEvent::getEccentricity() const
{
return m_Eccentricity;
}
const glm::vec2 & TouchEvent::getMajorAxis() const
{
return m_MajorAxis;
}
const glm::vec2 & TouchEvent::getMinorAxis() const
{
return m_MinorAxis;
}
const BlobPtr TouchEvent::getBlob() const
{
return m_pBlob;
}
ContourSeq TouchEvent::getContour()
{
if (m_pBlob) {
return m_pBlob->getContour();
} else {
throw Exception(AVG_ERR_UNSUPPORTED,
"TouchEvent::getContour: No contour available.");
}
}
float TouchEvent::getHandOrientation() const
{
if (getSource() == Event::TOUCH) {
if (m_bHasHandOrientation) {
return m_HandOrientation;
} else {
glm::vec2 screenCenter = Player::get()->getRootNode()->getSize()/2.f;
return getAngle(getPos()-screenCenter);
}
} else {
throw Exception(AVG_ERR_UNSUPPORTED,
"TouchEvent::getHandOrientation: Only supported for touch events.");
}
}
void TouchEvent::addRelatedEvent(TouchEventPtr pEvent)
{
m_RelatedEvents.push_back(pEvent);
if (getSource() == Event::TOUCH && m_RelatedEvents.size() == 1) {
TouchEventPtr pHandEvent = m_RelatedEvents.begin()->lock();
m_HandOrientation = getAngle(pHandEvent->getPos()-getPos());
m_bHasHandOrientation = true;
}
}
vector<TouchEventPtr> TouchEvent::getRelatedEvents() const
{
vector<TouchEventPtr> pRelatedEvents;
vector<TouchEventWeakPtr>::const_iterator it;
for (it = m_RelatedEvents.begin(); it != m_RelatedEvents.end(); ++it) {
pRelatedEvents.push_back((*it).lock());
}
return pRelatedEvents;
}
void TouchEvent::removeBlob()
{
m_pBlob = BlobPtr();
}
void TouchEvent::trace()
{
CursorEvent::trace();
AVG_TRACE(Logger::category::EVENTS,Logger::severity::DEBUG, "pos: " << getPos()
<< ", ID: " << getCursorID()
<< ", Area: " << m_Area
<< ", Eccentricity: " << m_Eccentricity);
}
}
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