public void initialize()
{
timeStep = 0;
offset = numberOfParticles;
random = new Random();
particles = new Particle[2*numberOfParticles];
for (int i = 0; i < particles.Length; i+=2)
{
particles[i] = new Particle();
particles[i].position = position;
particles[i].velocity = initialVelocity;
if (initialVelocity != Vector3.Zero)
{
particles[i].velocity.X += (float)random.NextDouble() * (float)random.NextDouble() * chaosity;
particles[i].velocity.Y += (float)random.NextDouble() * (float)random.NextDouble() * chaosity;
particles[i].velocity.Z += (float)random.NextDouble() * (float)random.NextDouble() * chaosity;
}
if (random.NextDouble() < 0.5)
particles[i].velocity.X = -particles[i].velocity.X;
if (random.NextDouble() < 0.5)
particles[i].velocity.Y = -particles[i].velocity.Y;
particles[i].gravity = gravity;
particles[i].lifeTime = lifeTime;
particles[i].colour = colour;
particles[i].size = 1000;
particles[i].startTime = -1;
particles[i].id = i;
particles[i + 1] = particles[i];
particles[i + 1].id = i + 1;
}
}
public void initialize()
{
timeStep = 0;
offset = numberOfParticles;
random = new Random();
particles = new Particle[2*numberOfParticles];
for (int i = 0; i < particles.Length; i+=2)
{
particles[i] = new Particle();
particles[i].position.X = (position.X - width / 2) + width * (float)random.NextDouble();
particles[i].position.Y = (position.Y - height / 2) + height * (float)random.NextDouble();
particles[i].position.Z = position.Z;
particles[i].velocity = initialVelocity;
particles[i].gravity = gravity;
particles[i].lifeTime = lifeTime;
particles[i].colour = colour;
particles[i].colour.W = 0.5f * (1.0f + (float)random.NextDouble());
particles[i].size = 10;
particles[i].startTime = -1;
particles[i].id = i;
particles[i + 1] = particles[i];
particles[i + 1].id = i + 1;
}
}