double BounceEaseInOut(double t, double b, double c, double d)
{
if( t < d/2 )
return BounceEaseIn( t*2, 0, c, d ) * .5f + b;
else
return BounceEaseOut( t*2-d, 0, c, d ) * .5f + c*.5f + b;
}
AHFloat BounceEaseInOut(AHFloat p) {
if (p < 0.5) {
return 0.5 * BounceEaseIn(p * 2);
} else {
return 0.5 * BounceEaseOut(p * 2 - 1) + 0.5;
}
}
float TweenInterpolation::BounceEaseInOut(float from, float change, float factor)
{
if (factor < 0.5f)
{
return BounceEaseIn(0, change, factor * 2) * 0.5f + from;
}
return BounceEaseOut(0, change, factor * 2 - 1.0f) * .5f + change * 0.5f + from;
}
double MathUtil::BounceEaseInOut(double p)
{
if(p < 0.5)
{
return 0.5 * BounceEaseIn(p*2);
}
else
{
return 0.5 * BounceEaseOut(p * 2 - 1) + 0.5;
}
}
//http://www.kirupa.com/forum/archive/index.php/t-76799.html
double BounceEaseIn(double t, double b, double c, double d)
{
return c - BounceEaseOut( d-t, 0, c, d ) + b;
}
void MyTweener::Tick(double timepassed)
{
if( m_Done && m_HoldPositionWhenDone == false )
return;
m_TimePassed += timepassed;
m_Done = true;
for( unsigned int i=0; i<m_ListOfVars.Count(); i++ )
{
TweenVar* pVar = m_ListOfVars[i];
if( pVar->m_Done && m_HoldVarPositionsWhenIndividualVarsAreDone == false )
continue;
double passed = m_TimePassed - pVar->m_Delay;
if( passed < 0 )
{
m_Done = false;
if( pVar->m_UseStartValueWhileWaitingForDelay == false )
return; // don't affect value until delay is over...
passed = 0;
}
double totaltime = pVar->m_TweenTime;
double timeperc = passed/totaltime;
if( timeperc > 1 )
{
timeperc = 1;
pVar->m_Done = true;
}
else
{
m_Done = false;
}
double startvalue = 0;
double valuerange = 0;
if( pVar->m_VarType == MTVT_UnsignedChar )
{
startvalue = ((TweenUnsignedChar*)pVar)->m_StartValue;
valuerange = ((TweenUnsignedChar*)pVar)->m_EndValue - ((TweenUnsignedChar*)pVar)->m_StartValue;
}
else if( pVar->m_VarType == MTVT_Char )
{
startvalue = ((TweenChar*)pVar)->m_StartValue;
valuerange = ((TweenChar*)pVar)->m_EndValue - ((TweenChar*)pVar)->m_StartValue;
}
else if( pVar->m_VarType == MTVT_Int )
{
startvalue = ((TweenInt*)pVar)->m_StartValue;
valuerange = ((TweenInt*)pVar)->m_EndValue - ((TweenInt*)pVar)->m_StartValue;
}
else if( pVar->m_VarType == MTVT_Float )
{
startvalue = ((TweenFloat*)pVar)->m_StartValue;
valuerange = ((TweenFloat*)pVar)->m_EndValue - ((TweenFloat*)pVar)->m_StartValue;
}
double newvalue = 0;
if( pVar->m_Done )
{
newvalue = startvalue + valuerange;
}
else
{
switch( pVar->m_TweenType )
{
case MTT_Linear:
newvalue = startvalue + valuerange*timeperc;
break;
case MTT_SineEaseIn: // -5 * cos(x * 3.1415927/2) + 5
newvalue = startvalue + -valuerange * cos(timeperc * PI/2) + valuerange;
break;
case MTT_SineEaseOut: // 5 * sin(x * 3.1415927/2)
newvalue = startvalue + valuerange * sin(timeperc * PI/2);
break;
case MTT_SineEaseInOut: // -5/2 * (cos(x * 3.1415927)-1)
newvalue = startvalue + -valuerange/2 * (cos(timeperc * PI)-1);
break;
case MTT_BounceEaseIn:
newvalue = BounceEaseIn( passed, startvalue, valuerange, totaltime );
break;
case MTT_BounceEaseOut:
newvalue = BounceEaseOut( passed, startvalue, valuerange, totaltime );
break;
case MTT_BounceEaseInOut:
newvalue = BounceEaseInOut( passed, startvalue, valuerange, totaltime );
break;
case MTT_ElasticEaseIn:
newvalue = ElasticEaseIn( passed, startvalue, valuerange, totaltime, pVar->m_Elasticity );
break;
case MTT_ElasticEaseOut:
newvalue = ElasticEaseOut( passed, startvalue, valuerange, totaltime, pVar->m_Elasticity );
break;
case MTT_ElasticEaseInOut:
newvalue = ElasticEaseInOut( passed, startvalue, valuerange, totaltime, pVar->m_Elasticity );
break;
}
}
if( pVar->m_VarType == MTVT_UnsignedChar )
{
*((TweenUnsignedChar*)pVar)->m_pVariable = (unsigned char)newvalue;
}
else if( pVar->m_VarType == MTVT_Char )
{
*((TweenChar*)pVar)->m_pVariable = (char)newvalue;
}
else if( pVar->m_VarType == MTVT_Int )
{
*((TweenInt*)pVar)->m_pVariable = (int)newvalue;
}
else if( pVar->m_VarType == MTVT_Float )
{
*((TweenFloat*)pVar)->m_pVariable = (float)newvalue;
}
}
}
AHFloat BounceEaseIn(AHFloat p)
{
return 1 - BounceEaseOut(1 - p);
}
float TweenInterpolation::BounceEaseIn(float from, float change, float factor)
{
return change - BounceEaseOut(0, change, 1.0f - factor) + from;
}
double MathUtil::BounceEaseIn(double p)
{
return 1 - BounceEaseOut(1 - p);
}
MathUtil::MathUtil()
{
int SizeOfFloat = sizeof(float);
InitSin();
m_easeQuadIn = (float *)malloc(100 * SizeOfFloat);
m_easeQuadOut = (float *)malloc(100 * SizeOfFloat);
m_easeQuadInOut = (float *)malloc(100 * SizeOfFloat);
m_easeCubeIn = (float *)malloc(100 * SizeOfFloat);
m_easeCubeOut = (float *)malloc(100 * SizeOfFloat);
m_easeCubeInOut = (float *)malloc(100 * SizeOfFloat);
m_easeQuartIn = (float *)malloc(100 * SizeOfFloat);
m_easeQuartOut = (float *)malloc(100 * SizeOfFloat);
m_easeQuartInOut = (float *)malloc(100 * SizeOfFloat);
m_easeQuintIn = (float *)malloc(100 * SizeOfFloat);
m_easeQuintOut = (float *)malloc(100 * SizeOfFloat);
m_easeQuintInOut = (float *)malloc(100 * SizeOfFloat);
m_easeElasticIn = (float *)malloc(100 * SizeOfFloat);
m_easeElasticOut = (float *)malloc(100 * SizeOfFloat);
m_easeElasticInOut = (float *)malloc(100 * SizeOfFloat);
m_easeBackIn = (float *)malloc(100 * SizeOfFloat);
m_easeBackOut = (float *)malloc(100 * SizeOfFloat);
m_easeBackInOut = (float *)malloc(100 * SizeOfFloat);
m_easeBounceIn = (float *)malloc(100 * SizeOfFloat);
m_easeBounceOut = (float *)malloc(100 * SizeOfFloat);
m_easeBounceInOut = (float *)malloc(100 * SizeOfFloat);
for (int i = 0; i < 100; i++)
{
double t = i / 100.0;
m_easeQuadIn[i] = QuadraticEaseIn(t);
m_easeQuadOut[i] = QuadraticEaseOut(t);
m_easeQuadInOut[i] = QuadraticEaseInOut(t);
m_easeCubeIn[i] = CubicEaseIn(t);
m_easeCubeOut[i] = CubicEaseOut(t);
m_easeCubeInOut[i] = CubicEaseInOut(t);
m_easeQuartIn[i] = QuarticEaseIn(t);
m_easeQuartOut[i] = QuarticEaseOut(t);
m_easeQuartInOut[i] = QuarticEaseInOut(t);
m_easeQuintIn[i] = QuinticEaseIn(t);
m_easeQuintOut[i] = QuinticEaseOut(t);
m_easeQuintInOut[i] = QuinticEaseInOut(t);
m_easeElasticIn[i] = ElasticEaseIn(t);
m_easeElasticOut[i] = ElasticEaseOut(t);
m_easeElasticInOut[i] = ElasticEaseInOut(t);
m_easeBackIn[i] = BackEaseIn(t);
m_easeBackOut[i] = BackEaseOut(t);
m_easeBackInOut[i] = BackEaseInOut(t);
m_easeBounceIn[i] = BounceEaseIn(t);
m_easeBounceOut[i] = BounceEaseOut(t);
m_easeBounceInOut[i] = BounceEaseInOut(t);
}
}
float Easing::BounceEaseInOut(float t,float b , float c, float d)
{
if (t < d/2) return BounceEaseIn (t*2, 0, c, d) * .5f + b;
else return BounceEaseOut (t*2-d, 0, c, d) * .5f + c*.5f + b;
}
// bounce
float Easing::BounceEaseIn(float t,float b , float c, float d)
{
return c - BounceEaseOut (d-t, 0, c, d) + b;
}