static void initParticle(graphics_ParticleSystem const *ps, graphics_Particle *p, float t) {
p->origin[0] = p->position[0] = lerp(ps->prevPosition[0], ps->position[0], t);
p->origin[1] = p->position[1] = lerp(ps->prevPosition[1], ps->position[1], t);
if(ps->particleLifeMin == ps->particleLifeMax) {
p->life = ps->particleLifeMin;
} else {
p->life = (float) math_RandomGenerator_random2(&moduleData.rng, ps->particleLifeMin, ps->particleLifeMax);
}
p->lifetime = p->life;
switch(ps->areaSpreadDistribution) {
case graphics_AreaSpreadDistribution_uniform:
p->position[0] += math_RandomGenerator_random2(&moduleData.rng, -1.0, 1.0) * ps->areaSpread[0];
p->position[1] += math_RandomGenerator_random2(&moduleData.rng, -1.0, 1.0) * ps->areaSpread[1];
break;
case graphics_AreaSpreadDistribution_normal:
p->position[0] += math_RandomGenerator_randomNormal(&moduleData.rng, ps->areaSpread[0]);
p->position[1] += math_RandomGenerator_randomNormal(&moduleData.rng, ps->areaSpread[1]);
break;
default:
break;
}
float direction = ps->direction + math_RandomGenerator_random2(&moduleData.rng, -1.0, 1.0) * ps->spread;
float speed = math_RandomGenerator_random2(&moduleData.rng, ps->speedMin, ps->speedMax);
p->velocity[0] = cos(direction) * speed;
p->velocity[1] = sin(direction) * speed;
p->linearAcceleration[0] = math_RandomGenerator_random2(&moduleData.rng, ps->linearAccelerationMin[0], ps->linearAccelerationMax[0]);
p->linearAcceleration[1] = math_RandomGenerator_random2(&moduleData.rng, ps->linearAccelerationMin[1], ps->linearAccelerationMax[1]);
p->radialAcceleration = math_RandomGenerator_random2(&moduleData.rng, ps->radialAccelerationMin, ps->radialAccelerationMax);
p->tangentialAcceleration = math_RandomGenerator_random2(&moduleData.rng, ps->tangentialAccelerationMin, ps->tangentialAccelerationMax);
p->linearDamping = math_RandomGenerator_random2(&moduleData.rng, ps->linearDampingMin, ps->linearDampingMax);
p->sizeOffset = math_RandomGenerator_random(&moduleData.rng);
p->sizeIntervalSize = (1.0 - math_RandomGenerator_random2(&moduleData.rng, 0.0, ps->sizeVariation)) - p->sizeOffset;
p->size = ps->sizes[(size_t)(p->sizeOffset - 0.5f) * (ps->sizeCount -1 )];
p->spinStart = calculateVariation(ps->spinStart, ps->spinEnd, ps->spinVariation);
p->spinEnd = calculateVariation(ps->spinEnd, ps->spinStart, ps->spinVariation);
p->rotation = math_RandomGenerator_random2(&moduleData.rng, ps->rotationMin, ps->rotationMax);
p->angle = p->rotation;
if(ps->relativeRotation) {
p->angle += atan2(p->velocity[1], p->velocity[0]);
}
p->color = ps->colors[0];
p->quadIndex = 0;
}
void ThermalEngine::updateThermal(ofImage heatImg){
images.push_back(heatImg);
if(images.size() > 2)
calculateVariation();
if(images.size() > BUFFER_SIZE)
images.erase(images.begin());
}
