private float pingPong = 0.01F; // 粒子在来回运动的时候的游离范围
void Start()
{
ps = this.GetComponent <ParticleSystem>();
particle_arr = new ParticleSystem.Particle[resolution];
hp = new HaloParticle[resolution];
ps.Emit(resolution);
ps.GetParticles(particle_arr);
// 初始化各个粒子的位置
for (int i = 0; i < resolution; i++)
{
// 使得粒子集中在平均半径处
float shiftMinRadius = Random.Range(1, (min_radius + max_radius) / (2 * min_radius));
float shiftMaxRadius = Random.Range((min_radius + max_radius) / (2 * max_radius), 1);
//粒子角度,添加一个偏移量，使粒子集中于π/4和5π/4处
float shiftMinAngle = Random.Range(1, 1.5f);
float shiftMaxAngle = Random.Range(0.75f, 1);
// 粒子的角度为[0, 2π], 按照平面直角坐标系的参数方程进行设定
float angle = Random.Range(Mathf.PI * shiftMinAngle, Mathf.PI * 2 * shiftMaxAngle) - Mathf.PI / 4;
if (Random.Range(0, 100) > 50)
{
angle -= Mathf.PI;
}
float radius = Random.Range(min_radius * shiftMinRadius, max_radius * shiftMaxRadius);
float time = Random.Range(0.0f, 360.0f);
hp[i] = new HaloParticle(radius, angle, time);
particle_arr[i].position = new Vector3(radius * Mathf.Cos(angle), radius * Mathf.Sin(angle), 0);
}
ps.SetParticles(particle_arr, particle_arr.Length);
}
// Start is called before the first frame update
void Start()
{
particleSystem = this.GetComponent <ParticleSystem> ();
particleArray = new ParticleSystem.Particle[haloResolution];
haloParticle = new HaloParticle[haloResolution];
particleSystem.Emit(haloResolution);
particleSystem.GetParticles(particleArray);
for (int i = 0; i < haloResolution; ++i)
{
float shiftMinRadius = Random.Range(1, (maxRadius + minRadius) / 2 / minRadius);
float shiftMaxRadius = Random.Range((maxRadius + minRadius) / 2 / maxRadius, 1);
float radius = Random.Range(minRadius * shiftMinRadius, maxRadius * shiftMaxRadius);
float angle = Random.Range(0, Mathf.PI * 2);
haloParticle[i] = new HaloParticle(radius, angle);
particleArray[i].position = new Vector3(radius * Mathf.Cos(angle), radius * Mathf.Sin(angle), 0);
}
particleSystem.SetParticles(particleArray, particleArray.Length);
}
