#include "animpoint.h"

#include <math.h>

AnimPoint::AnimPoint()

{

	init();

}

void AnimPoint::operator= ( const AnimPoint & other )

{

	copy (other);

}

void AnimPoint::operator= ( const QPointF & other )

{

	init();

	setX (other.x() );

	setY (other.x() );

}

bool AnimPoint::operator== ( const QPointF& other )

{

	QPointF p( x(),y());

	return p == other;

}

bool AnimPoint::operator== ( AnimPoint  other )

{

    if (rx() != other.rx() ) return false;

    if (ry() != other.ry() ) return false;

	if (startPos != other.startPos) return false;

	if (destPos  != other.destPos) return false;

    if (animated != other.animated ) return false;

	return true;

}

void AnimPoint::init ()

{

	animated=false;

	n=0;

	startPos=QPointF(0,0);

	destPos=QPointF(0,0);

	vector=QPointF(0,0);

	animTicks=10;

}

void AnimPoint::copy (AnimPoint other)

{

	setX (other.x() );

	setY (other.x() );

	startPos=other.startPos;

	destPos=other.destPos;

	vector=other.vector;

	animated=other.animated;

	n=other.n;

	animTicks=other.animTicks;

}

void AnimPoint::setStart(const QPointF &p)

{

	startPos=p;

	initVector();

}

QPointF AnimPoint::getStart()

{

	return startPos;

}

void AnimPoint::setDest(const QPointF &p)

{

	destPos=p;

	initVector();

}

QPointF AnimPoint::getDest()

{

	return destPos;

}

void AnimPoint::setTicks (const uint &t)

{

	animTicks=t;

}

uint AnimPoint::getTicks()

{

	return (uint) animTicks;

}

void AnimPoint::setAnimated(bool b)

{

	animated=b;

	if (b) n=0;

}

bool AnimPoint::isAnimated()

{

	return animated;

}

bool AnimPoint::animate()

{

	if (!animated) return animated;

	n++;

	if (n>animTicks)

	{

		vector=QPointF(0,0);

		animated=false;

		setX (destPos.x() );

		setY (destPos.y() );

		return animated;

	}

	// Some math slow down the movement

	qreal f=1-n/animTicks;

	qreal ff=1-f*f*f;

	setX (startPos.x() + vector.x()*ff );

	setY (startPos.y() + vector.y()*ff );

	return animated;

}

void AnimPoint::initVector()

{

	vector.setX (destPos.x()-startPos.x() );

	vector.setY (destPos.y()-startPos.y() );

}