void ParticleField::updateParticles() {
for (std::list<Particle>::iterator it = m_Particles.begin(); it != m_Particles.end(); it++) {
ci::Vec4f curParticle = it->history.back();
if (curParticle[3] < HEAT_KILL_THRESHOLD) {
it->history.pop_front();
continue;
}
if (inView(curParticle)) {
curParticle[3] = std::min(static_cast<float>(curParticle[3] + HEAT_CHANGE_RATE), 1.0f);
} else {
curParticle[3] = std::max(static_cast<float>(curParticle[3] - HEAT_CHANGE_RATE), 0.0f);
}
ci::Vec3f vel;
ci::Vec3f updatedLoc(curParticle[0], curParticle[1], curParticle[2]);
getPerlin(updatedLoc, vel);
updatedLoc += it->mult * vel * (m_CurTimeSeconds - m_LastTimeSeconds);
applyForces(updatedLoc);
curParticle[0] = updatedLoc[0];
curParticle[1] = updatedLoc[1];
curParticle[2] = updatedLoc[2];
it->history.push_back(curParticle);
if (it->history.size() > MAX_HISTORY_LENGTH) {
it->history.pop_front();
}
}
}
void Perlin2D::init_perlin(){
for (int i = 0; i < m_sizeX; ++i)
for (int j = 0; j < m_sizeY; ++j)
m_perlin.push_back(getPerlin(i, j));
}