public static Vector2 RandomRadial2DUnitVector(RandomFloatProvider random, float distance)
{
float angle = random.getFloat(0, 2 * Mathf.PI);
float radius = Mathf.Sqrt(distance);
return(new Vector2(
radius * Mathf.Cos(angle),
radius * Mathf.Sin(angle)
));
}
public static Vector3 RandomNavSphere(RandomFloatProvider random, Vector3 origin, float distance, int layermask)
{
Vector3 randomDirection = RandomPointInSphere(random) * distance;
randomDirection += origin;
NavMeshHit navHit;
NavMesh.SamplePosition(randomDirection, out navHit, distance, layermask);
return(navHit.position);
}
//https://karthikkaranth.me/blog/generating-random-points-in-a-sphere/
public static Vector3 RandomPointInSphere(RandomFloatProvider randomProvider)
{
var u = randomProvider.getFloat(1f);
var v = randomProvider.getFloat(1f);
var theta = u * 2.0 * Math.PI;
var phi = Mathf.Acos(2f * v - 1f);
// cube root to give even distribution, rather than clumping to origin
var r = Mathf.Pow(randomProvider.getFloat(1f), 1f / 3f);
var sinTheta = Math.Sin(theta);
var cosTheta = Math.Cos(theta);
var sinPhi = Math.Sin(phi);
var cosPhi = Math.Cos(phi);
var x = r * sinPhi * cosTheta;
var y = r * sinPhi * sinTheta;
var z = r * cosPhi;
return(new Vector3((float)x, (float)y, (float)z));
}
public static Quaternion RandomRotation(RandomFloatProvider randomProvider)
{
return(Quaternion.Euler(randomProvider.getFloat(0, 360), randomProvider.getFloat(0, 360), randomProvider.getFloat(0, 360)));
}