//--------------------------------------------------------------
void testApp::update(){
// This is how you loop through and delete a particle using iterators and vectors
// Note how we don't put it++ up in the top of the loop.
for( vector<Particle>::iterator it=pList.begin(); it!=pList.end(); ){
it->update();
if( it->bIsDead ){
it = pList.erase(it); // When we erase one, it returns the next particle automatically. It's done the "it++" for us!
ofLog( OF_LOG_NOTICE, "size is " + ofToString(pList.size()) );
}else {
it++;
}
// When the current batch of fireworks runs out, spawn a new batch at the location of the last firework.
if (pList.size() <= 1) {
for( int i=0; i<50; i++ ){
if (it->pos.x > 0 && it->pos.x < ofGetWindowWidth() && it->pos.y > 0 && it->pos.y < ofGetWindowHeight()) {
addParticle(it->pos);
}else {
addParticle(ofGetWindowSize()/2); // If the pos is offscreen, relocate to the center of the screen.
}
}
}
}
}
//------------------------------------------------------------------------------
void HamiltonMatrix::computeTimDepMatrixElements(int basisSize)
{
cout << "Setting up the time dependent part of the Hamilton matrix." << endl;
int phase;
int nStates = slaterDeterminants.size();
bitset<BITS> newState;
double interactionElement = 1.0 / sqrt(2 * w);
for (int st = 0; st < nStates; st++) {
for (int p = 0; p < basisSize-1; p++) {
// <Psi'|Psi^p_{p+1}>
newState = slaterDeterminants[st];
phase = 1;
newState = removeParticle(p + 1, newState);
phase *= sign(p + 1, newState);
newState = addParticle(p, newState);
phase *= sign(p, newState);
if (newState[BITS - 1] != 1) {
for (int st2 = 0; st2 < (int)slaterDeterminants.size(); st2++) {
if (newState == slaterDeterminants[st2]) {
Ht(st, st2) += sqrt(p+1)*interactionElement * phase;
break;
}
}
}
// <Psi'|Psi^{p+1}_p>
newState = slaterDeterminants[st];
phase = 1;
newState = removeParticle(p, newState);
phase *= sign(p, newState);
newState = addParticle(p + 1, newState);
phase *= sign(p + 1, newState);
if (newState[BITS - 1] != 1) {
for (int st2 = 0; st2 < (int)slaterDeterminants.size(); st2++) {
if (newState == slaterDeterminants[st2]) {
Ht(st, st2) += sqrt(p+1)*interactionElement * phase;
break;
}
}
}
}
}
#if DEBUG
cout << "computeTimDepMatrixElements(int basisSize)" << endl;
cout << Ht << endl;
#endif
}
void HamiltonMatrix::computeMatrixElements() {
cout << "Computing the Hamilton matrix " << endl;
int s;
int nStates = SLBit.size();
// int newState;
bitset<BITS> newState;
int i, j, k, l;
double interactionElement;
H = zeros(nStates, nStates);
for (int st = 0; st < SLBit.size(); st++) {
for (int b = 0; b < interactions.n_rows; b++) {
newState = SLBit[st];
i = interactions(b, 0);
j = interactions(b, 1);
k = interactions(b, 2);
l = interactions(b, 3);
interactionElement = interactions(b, 4);
// Using the two body operator. Mathematics: a+(i)a+(j)a-(l)a-(k)|psi>
s = 1;
newState = removeParticle(k, newState);
s *= sign(k, newState);
newState = removeParticle(l, newState);
s *= sign(l, newState);
newState = addParticle(j, newState);
s *= sign(j, newState);
newState = addParticle(i, newState);
s *= sign(i, newState);
if (newState != 0) {
// Searching for the new state to compute the matrix elements.
for (int st2 = 0; st2 < SLBit.size(); st2++) {
if (newState == SLBit[st2]) {
H(st, st2) += interactionElement * s;
}
}
}
}
// One body energies
H(st, st) += oneBodyEnergy(st);
}
// Symmetrizing the Hamilton matrix
for (int i = 0; i < H.n_rows; i++) {
for (int j = 0; j < i; j++) {
H(j, i) = H(i, j);
}
}
cout << "Completed generating the Hamilton matrix" << endl;
}
//--------------------------------------------------------------
void testApp::draw(){
for( vector<Particle>::iterator it = pList.begin(); it!=pList.end(); it++){
it->draw();
}
if(click){
addParticle();
addParticle();
}
}
void timer(int)
{
display();
if(PRESSED_LEFT && !SPEED_PARTICLES)
{
addParticle(10, 3); //add tiny particle
PRESSED_LEFT = false;
}
if(PRESSED_RIGHT)
{
addParticle(10000, 10, 0); //add huge particle
PRESSED_RIGHT = false;
}
if(PRESSED_MIDDLE)
removeParticles(); //remove all particles
for(int i = 0; i < particles.size(); i++)
{
Particle &p = particles[i];
bool not_fall = true;
for(int j = 0; j < particles.size(); j++)
{
if(j == i || p.m >= 10000) // we consider the 10000 as infinit (big mass) so this particles won't move
continue;
const Particle &p1 = particles[j];
float d = sqrt((p1.x - p.x)*(p1.x - p.x) + (p1.y - p.y)*(p1.y - p.y));
if(d > p1.r)
{
p.vx += 0.03 * p1.m / (d*d) * (p1.x - p.x)/d; //f = ma => a = f/m
p.vy += 0.03 * p1.m / (d*d) * (p1.y - p.y)/d;
}
else
not_fall = false;
}
if(not_fall)
{
p.x += p.vx;
p.y += p.vy;
}
else
particles.erase(particles.begin()+i);
}
glutTimerFunc(1, timer, 0);
}
void ParticleEmitter::addEffect(EffectType effect, const point &pos)
{
int i, len;
switch (effect) {
case EFFECT_BLOODSQUIRT:
{
len = randint(14,28);
for (i=0; i<len; i++) {
Particle* p;
if (i < 20) {
p = addParticle(Particle::BLOOD_SMALL);
} else {
p = addParticle(Particle::BLOOD_BIG);
}
if (p != NULL) {
p->setCenter(pos);
point dir = {randint(-PX/2, PX/2), randint(-PX, 0)};
p->setVelocity(dir.x, dir.y);
p->setAcceleration(0, PX/16); // gravity
}
}
break;
}
case EFFECT_NOTE1:
case EFFECT_NOTE2:
case EFFECT_NOTE3:
case EFFECT_NOTE4:
case EFFECT_NOTE5:
case EFFECT_OBSTACLE:
{
Particle::ParticleType particleType;
if (effect == EFFECT_NOTE1) particleType = Particle::NOTE1;
else if (effect == EFFECT_NOTE2) particleType = Particle::NOTE2;
else if (effect == EFFECT_NOTE3) particleType = Particle::NOTE3;
else if (effect == EFFECT_NOTE4) particleType = Particle::NOTE4;
else if (effect == EFFECT_NOTE5) particleType = Particle::NOTE5;
else if (effect == EFFECT_OBSTACLE) particleType = Particle::OBSTACLE;
len = randint(20,30);
for (i=0; i<len; i++) {
Particle* p = addParticle(particleType);
if (p != NULL) {
p->setCenter(pos);
point dir = {randint(-PX, PX), randint(-PX*2, 0)};
p->setVelocity(dir.x, dir.y);
p->setAcceleration(0, PX/16); // gravity
}
}
break;
}
}
}
void ofxParticleControlledEmitter::fireOnce(int x, int y, int vx, int vy)
{
// If the emitter is active and the emission rate is greater than zero then emit
// particles
// Set variables
sourcePosition.x = x;
sourcePosition.y = y;
sourcePositionVariance.x = vx;
sourcePositionVariance.y = vy;
startParticleEmitter();
emissionRate = maxParticles / particleLifespan;
GLfloat aDelta = (ofGetElapsedTimeMillis()-lastUpdateMillis)/1000.0f;
if(active && emissionRate) {
float rate = 1.0f/emissionRate;
emitCounter += aDelta;
while(particleCount < maxParticles && emitCounter > rate) {
addParticle();
emitCounter -= rate;
particlesFired++;
particlesLeft--;
}
}
}
void ShaderParticleRenderer::_updateRenderQueue(RenderQueue* queue, Ogre::list<Particle*>::type& currentParticles, bool cullIndividually)
{
// be sure that we have enough space in buffers
if (!allocateBuffers(currentParticles.size())) {
assert(0 && "Cannot allocate buffers");
return;
}
// update vertex data
mRadius = 0.0f;
if (!currentParticles.empty()) {
HardwareVertexBufferSharedPtr pVB = mVertexData->vertexBufferBinding->getBuffer(0);
uchar* pDataVB = reinterpret_cast<uchar*>(pVB->lock(HardwareBuffer::HBL_DISCARD));
for (Ogre::list<Particle*>::type::iterator it=currentParticles.begin(); it!=currentParticles.end(); ++it) {
Particle* pParticle = *it;
addParticle(pDataVB, *pParticle);
pDataVB += 4 * mVertexSize;
float fDist = (mParentNode != NULL) ? mParentNode->getPosition().distance(pParticle->mPosition) : pParticle->mPosition.length();
if (fDist > mRadius)
mRadius = fDist;
}
pVB->unlock();
}
// setup counts
mVertexData->vertexCount = currentParticles.size() * 4;
mIndexData->indexCount = currentParticles.size() * 6;
// update render queue
queue->addRenderable(this, mRenderQueueID);
}
RobotRocketEffect::RobotRocketEffect(GLfloat x, GLfloat y, GLfloat width, GLfloat height, int strength, int count) : GLParticleEffect(strength, strength)
{
mCount = count;
mPos.x = x;
mPos.y = y;
mRotation.x = 0.0f;
mRotation.y = 0.0f;
mAngle = 0.0f;
mAlpha = 1.0f;
mWidth = width;
mHeight = height;
mVelocity.x = 0.0f;
mVelocity.y = 0.0f;
recalculateVectors();
mMaxDistance = (msrcMid - mdestMid).len();
for(int i = 0; i < mCount; i++) {
GLParticleDummy * p = addParticle();
p->moveTo(0.0f, 0.0f);
mLifeTime[i] = 0;
}
mColor[0] = yellow - red;
mColor[1] = blue - yellow;
mColor[2] = GLvector3f(0.0f, 0.0f, 0.0f);
}
void IncompressibleCloud::inject() {
if(runTime_.time().value()<tStart || runTime_.time().value()>tEnd) {
return;
}
scalar prop=random.scalar01();
if(prop<thres) {
vector tmp=(random.vector01()-vector(0.5,0.5,0.5))*2;
vector pos=center+tmp*r0;
tmp=vector(random.GaussNormal(),random.GaussNormal(),random.GaussNormal())/sqrt(3.);
vector vel=tmp*vel0+vel1;
scalar d=fabs(random.GaussNormal())*d1+d0;
label cellI=mesh_.findCell(pos);
if(cellI>=0) {
HardBallParticle* ptr=new HardBallParticle(*this,pos,cellI,d,vel);
ptr->stepFraction() = 1;
addParticle(ptr);
injectedInModel_++;
}
}
}
void ParticleSystem::initSmokeParticle(Vector2 const& initialPosition, float initialRotation, Vector2 const& initialVelocity, float positionSpread)
{
// Grab a particle.
Particle* p = addParticle(2, true);
if(!p) return;
// Properties about smoke particles.
// Set basic particle properties.
p->mCallback = smokeParticleCb;
p->mAlpha = 1.0f;
// Setup image.
p->mImage.setImage(gImageLibrary->getImage(PARTICLE_SMOKE_00));
p->mImage.mCenter = initialPosition;
p->mImage.mRotation = initialRotation;
p->mImage.makeDirty();
// Offset center.
if(positionSpread != 0)
{
p->mImage.mCenter += Vector2(((float)rand() / RAND_MAX - 0.5) * positionSpread, ((float)rand() / RAND_MAX - 0.5) * positionSpread);
}
// Setup velocity. InitialVelocity from vehicle plus particle speed rotated for direction.
p->mVelocity = initialVelocity * Transform2::createRotation(initialRotation);
}
ParticleSystem::ParticleSystem()
: m_rate(5000),
m_nbMax(50000.0),
m_maxTimeAlive(5000.0),
m_started(false),
m_spread(40),
m_speed(8),
m_gravity(2),
m_down(vec3{0.0f, -1.0f, 0.0f}),
gl_positions(NULL),
gl_velocities(NULL),
gl_ages(NULL),
m_pointSize(1)
{
addParticle();
m_orientation.x = 0;
m_orientation.y = 1;
m_orientation.z = 0;
m_position.x = 0;
m_position.y = 0;
m_position.z = 0;
m_randomG.initSeed(clock());
gl_shader = "Basic";
gl_texId = -1;
m_transparent = true;
}
void mouse(int button, int state, int x, int y)
{
//set the coordinates
Mx = x - 250;
My = y - 250;
//add speed particles by line draging
if(SPEED_PARTICLES)
{
if(line.x2 != 0 && line.y2 != 0 && state == GLUT_UP && PRESSED_LEFT)
addParticle(100, 5, 1, line.x1 - line.x2, line.y1 - line.y2); //add a speed particle
else
{
line.x1 = line.x2 = Mx;
line.y1 = line.y2 = My;
}
}
//check which button is pressed
if(button == GLUT_LEFT_BUTTON)
PRESSED_LEFT = state == GLUT_DOWN;
else if(button == GLUT_RIGHT_BUTTON)
PRESSED_RIGHT = state == GLUT_DOWN;
else if(button == GLUT_MIDDLE_BUTTON)
PRESSED_MIDDLE = state == GLUT_DOWN;
}
void ParticleSystem::update(sf::Time dt)
{
if (mEmitterActive && mInitializer && mAffector)
{
for (unsigned i = mParticles.size(); i < mMaxParticles; i++)
addParticle();
//if (mParticles.size() < mMaxParticles || mMaxParticles == 0)
// addParticle();
for (auto& particle : mParticles) {
(*mAffector)(particle, dt);
particle.lifetime -= dt;
}
if (!mParticles.empty() && mParticles.front().lifetime <= sf::Time::Zero)
mParticles.erase(mParticles.begin());
computeVertices();
}
else
std::cout << "\n\nUnable to update ParticleSystem\n"
<< "3 possible causes:\n"
<< " - The Emitter hasn't been activated\n"
<< " - The Initializer hasn't been set\n"
<< " - The Affector hasn't been set\n\n";
}
void LenJonSim::addline(QLineF l,double dx)
{
double startx, starty, endx, endy, distance, step,x,y;
QPointF *p1 = new QPointF(l.p1().x(),l.p1().y());
qDebug()<<p1->x()<<p1->y();
QPointF *p2 = new QPointF(l.p2().x(),l.p2().y());
startx = p1->x();
starty = p1->y();
endx = p2->x();
endy = p2->y();
distance = sqrt(pow(endx - startx,2)+pow(endy-starty,2));
step = (dx / distance);
for(double i = 0; i <= 1; i+=step){
x = startx + (endx - startx) * i;
y = starty + (endy - starty) * i;
addParticle(x,y);
nonMovableParticles++;
}
}
//--------------------------------------------------------------
void testApp::setupOrbits() {
// Matt adds: clear the vectors on setup (allows restarting).
particleList.clear();
setOfOrbits.clear();
ofSetVerticalSync(true);
ofSeedRandom();
ofBackground( 0);
// acc.set(0);
for( int i = 0; i < 18; i++){
_size = ofRandom(2, 5);
pos.set(ofRandom(ofGetWindowWidth()), ofRandom(ofGetWindowHeight()));
vel.set(ofRandom(0,.9));
rotDia = ofRandom(100,800);
addParticle();
addOrbit();
}
}
//--------------------------------------------------------------
void testApp::setup(){
ofSetVerticalSync(true);
ofSeedRandom();
for( int i = 0; i < 17; i++){
float coe = 1.02 * powf(1.19, i);
float _orbit;
_orbit = (40);
diameterList.push_back( _orbit * coe );
}
for( int i = 0; i < 17; i++){
_size = ofRandom(2, 5);
pos.set(ofRandom(ofGetWindowWidth()), ofRandom(ofGetWindowHeight()));
vel.set(ofRandom(0,.9));
addOrbit(diameterList[i] );
addParticle(diameterList[i] );
}
}
void ParticleEmitter::init()
{
for (int i = 0; i < count; i++)
{
addParticle();
}
}
TEST(TransferParticlesToPointCloudBehaviorTests, UpdateTest)
{
auto runtime = std::make_shared<Framework::Runtime>();
runtime->addManager(std::make_shared<Framework::BehaviorManager>());
runtime->addManager(std::make_shared<Physics::PhysicsManager>());
auto sceneElement = std::make_shared<Framework::BasicSceneElement>("Element");
auto particles = std::make_shared<Particles::SphRepresentation>("Particles");
particles->setMaxParticles(10);
particles->setMassPerParticle(1.0);
particles->setDensity(1.0);
particles->setGasStiffness(1.0);
particles->setKernelSupport(1.0);
for (size_t particleId = 0; particleId < 10; particleId++)
{
particles->addParticle(Vector3d(static_cast<double>(particleId), 0.0, 0.0), Vector3d::Zero(), 100000);
}
sceneElement->addComponent(particles);
auto pointCloud = std::make_shared<Graphics::OsgPointCloudRepresentation>("Graphics");
sceneElement->addComponent(pointCloud);
auto behavior = std::make_shared<TransferParticlesToPointCloudBehavior>("Behavior");
behavior->setSource(particles);
behavior->setTarget(pointCloud);
sceneElement->addComponent(behavior);
auto scene = runtime->getScene();
scene->addSceneElement(sceneElement);
particles->update(0.1);
behavior->update(0.1);
auto sourceVertices = particles->getParticles().safeGet()->getVertices();
auto targetVertices = pointCloud->getVertices()->getVertices();
ASSERT_EQ(sourceVertices.size(), targetVertices.size());
auto sourceVertex = sourceVertices.begin();
auto targetVertex = targetVertices.begin();
for (; sourceVertex != sourceVertices.end(); ++sourceVertex, ++targetVertex)
{
EXPECT_TRUE(sourceVertex->position.isApprox(targetVertex->position));
}
particles->removeParticle(0);
particles->removeParticle(1);
particles->update(0.1);
behavior->update(0.1);
sourceVertices = particles->getParticles().safeGet()->getVertices();
targetVertices = pointCloud->getVertices()->getVertices();
ASSERT_EQ(sourceVertices.size(), targetVertices.size());
sourceVertex = sourceVertices.begin();
targetVertex = targetVertices.begin();
for (; sourceVertex != sourceVertices.end(); ++sourceVertex, ++targetVertex)
{
EXPECT_TRUE(sourceVertex->position.isApprox(targetVertex->position));
}
}
void ParticleManager::addRandomParticles(unsigned int count){
for(size_t i = 0; i < count; ++i) {
glm::vec3 position = glm::vec3(1.2f, glm::linearRand(-1.f,5.f), 0.f);//glm::vec3(glm::linearRand(-5.f,5.f), glm::linearRand(0.f,5.f), glm::linearRand(-5.f,5.f));
glm::vec3 speed = glm::vec3(0.f, 0.f, 0.f);
glm::vec3 force = glm::vec3(0.f, 0.f, 0.f);
glm::vec3 color = glm::vec3(glm::linearRand(0.f,1.f),glm::linearRand(0.f,1.f),glm::linearRand(0.f,1.f));
addParticle(position, speed, glm::linearRand(0.01f,0.5f), force, color);
}
}
//--------------------------------------------------------------
void testApp::setup(){
ofSetVerticalSync(true);
ofSetFrameRate(60);
ofBackground(255);
for (int i = 0; i < 1000; i++){
addParticle();
}
}
void Simulation::generateRandomParticles(float range, bool canBeNegative) {
int index = 0;
while(index < particlesNumber) {
Particle p = generateRandomParticle(range, canBeNegative);
p.mass = 0.000001f;
addParticle(p);
index ++;
}
}
LeadSkeleton::LeadSkeleton (Field3D * const s, const CPoint& position, const CPoint& rootMoveFactor,
uint pls, float u, float noiseIncrement, float noiseMin, float noiseMax) :
Skeleton (s, position, rootMoveFactor,pls),
m_noiseGenerator(noiseIncrement, noiseMin, noiseMax)
{
m_u = u;
m_perturbateCount=0;
addParticle(&m_root);
}
void ParticleSystem::emit(uint32 num)
{
if (!active)
return;
num = std::min(num, maxParticles - activeParticles);
while (num--)
addParticle(1.0f);
}
void Emitter::update()
{
addParticle();
if(!particleList.empty()){
for(int i =0; i<particleList.size(); i++)
{
particleList.at(i)->update();
}
}
}
// ----------------------------------------------------- PARTICLE MANAGMENT
void MSAParticleSystem3D::addParticles( Vec3f _pos, int _count)
{
int max_x = width/2;
int max_y = height/2;
for(int i=0; i<_count; i++)
// addParticle( Vec3f( _pos.x + ofRandom(-max_x, max_x), _pos.y + ofRandom(-max_y,max_y), _pos.z + 0) ); //ofRandom(0,-max_y*2)) ); // + Rand::randVec3f() * 300 );
addParticle( Vec3f( _pos.x, _pos.y, _pos.z) ); //ofRandom(0,-max_y*2)
// addParticle( Vec3f( _pos.x , _pos.y, _pos.z ) ); // + Rand::randVec3f() * 300 );
}
//--------------------------------------------------------------
void testApp::setup(){
ofSetVerticalSync( true );
ofBackground( 0 );
dest.set( ofRandomWidth(), ofRandomHeight() );
for (int i = 0; i < 1; i++) {
addParticle();
}
}
//--------------------------------------------------------------
void testApp::setup(){
ofBackground(0);
ofSetVerticalSync(true);
ofSetFrameRate(60);
// make 50 particles up front!
for( int i=0; i<50; i++ ){
addParticle(ofGetWindowSize()/2);
}
}
void ParticleSystem::addExplosion(QPointF p, qreal r, qreal v,
uint particleCount) {
for (uint i = 0; i < particleCount; i++) {
qreal angle = i * 2 * M_PI / particleCount;
qreal dx = cos(angle);
qreal dy = sin(angle);
addParticle({p.x(), p.y(), r, dx * v, dy * v, 0.0, 0.0, 60, time()});
}
}
void ParticleManager::addNodeParticle(IGameDef* gamedef, scene::ISceneManager* smgr,
LocalPlayer *player, v3s16 pos, const TileSpec tiles[])
{
// Texture
u8 texid = myrand_range(0, 5);
video::ITexture *texture;
struct TileAnimationParams anim;
anim.type = TAT_NONE;
// Only use first frame of animated texture
if (tiles[texid].material_flags & MATERIAL_FLAG_ANIMATION)
texture = tiles[texid].frames[0].texture;
else
texture = tiles[texid].texture;
float size = rand() % 64 / 512.;
float visual_size = BS * size;
v2f texsize(size * 2, size * 2);
v2f texpos;
texpos.X = ((rand() % 64) / 64. - texsize.X);
texpos.Y = ((rand() % 64) / 64. - texsize.Y);
// Physics
v3f velocity((rand() % 100 / 50. - 1) / 1.5,
rand() % 100 / 35.,
(rand() % 100 / 50. - 1) / 1.5);
v3f acceleration(0,-9,0);
v3f particlepos = v3f(
(f32) pos.X + rand() %100 /200. - 0.25,
(f32) pos.Y + rand() %100 /200. - 0.25,
(f32) pos.Z + rand() %100 /200. - 0.25
);
Particle* toadd = new Particle(
gamedef,
smgr,
player,
m_env,
particlepos,
velocity,
acceleration,
rand() % 100 / 100., // expiration time
visual_size,
true,
false,
false,
texture,
texpos,
texsize,
anim,
0);
addParticle(toadd);
}