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animpoint.cpp
author insilmaril
Mon, 29 Jun 2009 10:27:42 +0000
changeset 777 8acac4fade1b
parent 767 6d2b32f305f9
child 826 e715694b0f47
permissions -rw-r--r--
more fixes 
     1 #include "animpoint.h"

     2 

     3 #include <math.h>

     4 

     5 AnimPoint::AnimPoint()

     6 {

     7 	init();

     8 }

     9 

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

    11 {

    12 	copy (other);

    13 }

    14 

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

    16 {

    17 	init();

    18 	setX (other.x() );

    19 	setY (other.x() );

    20 }

    21 

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

    23 {

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

    25 	return p == other;

    26 }

    27 

    28 bool AnimPoint::operator== ( AnimPoint  other )

    29 {

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

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

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

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

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

    35 

    36 	return true;

    37 }

    38 

    39 void AnimPoint::init ()

    40 {

    41 	animated=false;

    42 	n=0;

    43 	startPos=QPointF(0,0);

    44 	destPos=QPointF(0,0);

    45 	vector=QPointF(0,0);

    46 	animTicks=10;

    47 }

    48 

    49 void AnimPoint::copy (AnimPoint other)

    50 {

    51 	setX (other.x() );

    52 	setY (other.x() );

    53 	startPos=other.startPos;

    54 	destPos=other.destPos;

    55 	vector=other.vector;

    56 	animated=other.animated;

    57 	n=other.n;

    58 	animTicks=other.animTicks;

    59 }

    60 

    61 void AnimPoint::setStart(const QPointF &p)

    62 {

    63 	startPos=p;

    64 	initVector();

    65 }

    66 

    67 QPointF AnimPoint::getStart()

    68 {

    69 	return startPos;

    70 }

    71 

    72 

    73 void AnimPoint::setDest(const QPointF &p)

    74 {

    75 	destPos=p;

    76 	initVector();

    77 }

    78 

    79 QPointF AnimPoint::getDest()

    80 {

    81 	return destPos;

    82 }

    83 

    84 void AnimPoint::setTicks (const uint &t)

    85 {

    86 	animTicks=t;

    87 }

    88 

    89 uint AnimPoint::getTicks()

    90 {

    91 	return (uint) animTicks;

    92 }

    93 

    94 void AnimPoint::setAnimated(bool b)

    95 {

    96 	animated=b;

    97 	if (b) n=0;

    98 }

    99 

   100 bool AnimPoint::isAnimated()

   101 {

   102 	return animated;

   103 }

   104 

   105 bool AnimPoint::animate()

   106 {

   107 	if (!animated) return animated;

   108 	n++;

   109 	if (n>animTicks)

   110 	{

   111 		vector=QPointF(0,0);

   112 		animated=false;

   113 		setX (destPos.x() );

   114 		setY (destPos.y() );

   115 		return animated;

   116 	}

   117 

   118 	// Some math to slow down the movement in the end

   119 	qreal f=1-n/animTicks;

   120 	qreal ff=1-f*f*f;

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

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

   123 

   124 	return animated;

   125 }

   126 

   127 void AnimPoint::initVector()

   128 {

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

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

   131 }

   132 

   133
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