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- #include "CCPULineEmitter.h"
- #include "extensions/Particle3D/PU/CCPUParticleSystem3D.h"
- #include "extensions/Particle3D/PU/CCPUUtil.h"
- NS_CC_BEGIN
- const Vec3 PULineEmitter::DEFAULT_END(0, 0, 0);
- const float PULineEmitter::DEFAULT_MIN_INCREMENT = 0.0f;
- const float PULineEmitter::DEFAULT_MAX_INCREMENT = 0.0f;
- const float PULineEmitter::DEFAULT_MAX_DEVIATION = 0.0f;
- PULineEmitter::PULineEmitter(void) :
- PUEmitter(),
- _end(DEFAULT_END),
- _maxDeviation(DEFAULT_MAX_DEVIATION),
- _minIncrement(DEFAULT_MIN_INCREMENT),
- _maxIncrement(DEFAULT_MAX_INCREMENT),
- _increment(0.0f),
- _length(0.0f),
- _incrementsLeft(true),
- _first(true),
- _scaledMaxDeviation(0.0f),
- _scaledMinIncrement(0.0f),
- _scaledMaxIncrement(0.0f),
- _scaledLength(0.0f)
- {
- }
- void PULineEmitter::notifyStart (void)
- {
-
- PUEmitter::notifyStart();
- _increment = 0.0f;
- _incrementsLeft = true;
- _first = true;
- }
- void PULineEmitter::notifyRescaled(const Vec3& scale)
- {
-
- PUEmitter::notifyRescaled(scale);
- float scaleLength = scale.length();
- _scaledEnd.set(_end.x * scale.x, _end.y * scale.y, _end.z * scale.z);
- _scaledMaxDeviation = _maxDeviation * scaleLength;
- _scaledMinIncrement = _minIncrement * scaleLength;
- _scaledMaxIncrement = (_maxIncrement - _minIncrement) * scaleLength;
- _scaledLength = _scaledEnd.length();
- }
- unsigned short PULineEmitter::calculateRequestedParticles(float timeElapsed)
- {
- unsigned short requested = PUEmitter::calculateRequestedParticles(timeElapsed);
- if (_scaledMaxIncrement > 0)
- {
-
- if (!_incrementsLeft)
- {
-
- requested = 0;
- }
-
-
-
-
-
-
-
- }
- return requested;
- }
- const Vec3& PULineEmitter::getEnd(void) const
- {
- return _end;
- }
- void PULineEmitter::setEnd(const Vec3& end)
- {
- _end = end;
- _scaledEnd.set(_end.x * _emitterScale.x, _end.y * _emitterScale.y, _end.z * _emitterScale.z);
- _length = _end.length();
- }
- float PULineEmitter::getMaxIncrement(void) const
- {
- return _maxIncrement;
- }
- void PULineEmitter::setMaxIncrement(float maxIncrement)
- {
- _maxIncrement = maxIncrement;
- _scaledMaxIncrement = _maxIncrement * _emitterScale.length();
- }
- float PULineEmitter::getMinIncrement(void) const
- {
- return _minIncrement;
- }
- void PULineEmitter::setMinIncrement(float minIncrement)
- {
- _minIncrement = minIncrement;
- _scaledMinIncrement = _minIncrement * _emitterScale.length();
- }
- float PULineEmitter::getMaxDeviation(void) const
- {
- return _maxDeviation;
- }
- void PULineEmitter::setMaxDeviation(float maxDeviation)
- {
- _maxDeviation = maxDeviation;
- _scaledMaxDeviation = _maxDeviation * _emitterScale.length();
- }
- void PULineEmitter::initParticlePosition(PUParticle3D* particle)
- {
-
- if (_autoDirection || (_scaledMaxDeviation > 0.0f && !_first))
- {
-
- Vec3::cross(_end, Vec3(CCRANDOM_MINUS1_1(),
- CCRANDOM_MINUS1_1(),
- CCRANDOM_MINUS1_1()), &_perpendicular);
- _perpendicular.normalize();
- }
-
- float fraction = 0.0f;
- if (_scaledMaxIncrement > 0.0f)
- {
- if (!_first)
- {
- _increment += (_scaledMinIncrement + CCRANDOM_0_1() * _scaledMaxIncrement);
- if (_increment >= _scaledLength)
- {
- _incrementsLeft = false;
- }
- fraction = _increment / _scaledLength;
- }
- }
- else
- {
- fraction = CCRANDOM_0_1();
- }
-
- getDerivedPosition();
- if (_scaledMaxDeviation > 0.0f && _incrementsLeft)
- {
- if (!_first)
- {
- Vec3 basePosition = _derivedPosition + fraction * _scaledEnd;
- particle->position = basePosition + _scaledMaxDeviation * CCRANDOM_0_1() * _perpendicular;
- particle->originalPosition = basePosition;
-
- }
- else
- {
- particle->position = _derivedPosition;
- particle->originalPosition = particle->position;
- }
- }
- else
- {
- particle->position = _derivedPosition + fraction * _scaledEnd;
- particle->originalPosition = particle->position;
- }
- _first = false;
- }
- void PULineEmitter::initParticleDirection(PUParticle3D* particle)
- {
- if (_autoDirection)
- {
- float angle = 0.0f;
- generateAngle(angle);
- if (angle != 0.0f)
- {
-
- particle->direction = PUUtil::randomDeviant(_perpendicular, angle, _upVector);
- particle->originalDirection = particle->direction;
- }
- else
- {
- particle->direction = _perpendicular;
- particle->originalDirection = particle->direction;
- }
- }
- else
- {
-
- PUEmitter::initParticleDirection(particle);
- }
- }
- PULineEmitter* PULineEmitter::create()
- {
- auto pe = new (std::nothrow) PULineEmitter();
- pe->autorelease();
- return pe;
- }
- void PULineEmitter::copyAttributesTo( PUEmitter* emitter )
- {
- PUEmitter::copyAttributesTo(emitter);
- PULineEmitter* lineEmitter = static_cast<PULineEmitter*>(emitter);
- lineEmitter->setEnd(_end);
- lineEmitter->_length = _length;
- lineEmitter->setMinIncrement(_minIncrement);
- lineEmitter->setMaxIncrement(_maxIncrement);
- lineEmitter->setMaxDeviation(_maxDeviation);
- }
- PULineEmitter* PULineEmitter::clone()
- {
- auto be = PULineEmitter::create();
- copyAttributesTo(be);
- return be;
- }
- NS_CC_END
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