Method initCubeRandom

cpp/5_Domain_Specific/smokeParticles/ParticleSystem.cpp:223–233

initialize in random positions within cube

// initialize in random positions within cube
void ParticleSystem::initCubeRandom(vec3f origin, vec3f size, vec3f vel, float lifetime)
{
    float4 *posPtr = m_pos.getHostPtr();
    float4 *velPtr = m_vel.getHostPtr();

    for (uint i = 0; i < m_numParticles; i++) {
        vec3f pos = origin + svrand() * size;
        posPtr[i] = make_float4(pos.x, pos.y, pos.z, 0.0f);
        velPtr[i] = make_float4(vel.x, vel.y, vel.z, lifetime);
    }
}

// add sphere on regular grid
void ParticleSystem::addSphere(uint &index, vec3f pos, vec3f vel, int r, float spacing, float jitter, float lifetime)