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Version 4.4.0

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This commit is contained in:
Gary Scavone
2013-09-29 23:11:39 +02:00
committed by Stephen Sinclair
parent d199342e86
commit eccd8c9981
287 changed files with 11712 additions and 7676 deletions
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104
src/Envelope.cpp
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@@ -1,21 +1,21 @@
/***************************************************/
/*! \class Envelope
\brief STK envelope base class.
\brief STK linear line envelope class.
This class implements a simple envelope
generator which is capable of ramping to
a target value by a specified \e rate.
It also responds to simple \e keyOn and
\e keyOff messages, ramping to 1.0 on
keyOn and to 0.0 on keyOff.
This class implements a simple linear line envelope generator
which is capable of ramping to an arbitrary target value by a
specified \e rate. It also responds to simple \e keyOn and \e
keyOff messages, ramping to 1.0 on keyOn and to 0.0 on keyOff.
by Perry R. Cook and Gary P. Scavone, 1995 - 2007.
by Perry R. Cook and Gary P. Scavone, 1995 - 2009.
*/
/***************************************************/
#include "Envelope.h"
Envelope :: Envelope(void) : Generator()
namespace stk {
Envelope :: Envelope( void ) : Generator()
{
target_ = 0.0;
value_ = 0.0;
@@ -24,16 +24,7 @@ Envelope :: Envelope(void) : Generator()
Stk::addSampleRateAlert( this );
}
Envelope :: Envelope ( const Envelope& e )
{
target_ = 0.0;
value_ = 0.0;
rate_ = 0.001;
state_ = 0;
Stk::addSampleRateAlert( this );
}
Envelope :: ~Envelope(void)
Envelope :: ~Envelope( void )
{
Stk::removeSampleRateAlert( this );
}
@@ -56,77 +47,4 @@ void Envelope :: sampleRateChanged( StkFloat newRate, StkFloat oldRate )
rate_ = oldRate * rate_ / newRate;
}
void Envelope :: keyOn(void)
{
target_ = 1.0;
if (value_ != target_) state_ = 1;
}
void Envelope :: keyOff(void)
{
target_ = 0.0;
if (value_ != target_) state_ = 1;
}
void Envelope :: setRate(StkFloat rate)
{
if (rate < 0.0) {
errorString_ << "Envelope::setRate: negative rates not allowed ... correcting!";
handleError( StkError::WARNING );
rate_ = -rate;
}
else
rate_ = rate;
}
void Envelope :: setTime(StkFloat time)
{
if (time < 0.0) {
errorString_ << "Envelope::setTime: negative times not allowed ... correcting!";
handleError( StkError::WARNING );
rate_ = 1.0 / (-time * Stk::sampleRate());
}
else
rate_ = 1.0 / (time * Stk::sampleRate());
}
void Envelope :: setTarget(StkFloat target)
{
target_ = target;
if (value_ != target_) state_ = 1;
}
void Envelope :: setValue(StkFloat value)
{
state_ = 0;
target_ = value;
value_ = value;
}
int Envelope :: getState(void) const
{
return state_;
}
StkFloat Envelope :: computeSample(void )
{
if (state_) {
if (target_ > value_) {
value_ += rate_;
if (value_ >= target_) {
value_ = target_;
state_ = 0;
}
}
else {
value_ -= rate_;
if (value_ <= target_) {
value_ = target_;
state_ = 0;
}
}
}
lastOutput_ = value_;
return value_;
}
} // stk namespace