omikun

//taken from http://answers.unity3d.com/questions/1097270/project-a-vector3-onto-a-plane-orthographically.html
//You simply project your vector onto the normal and subtract the result from your original vector. That will give you the projected vector on the plane. If you want to project a point to a plane you first need to calculate the relative vector from a point on that plane.

 Vector3 planeOrigin;
 Vector3 planeNormal;
 Vector3 point;
 
 Vector3 v = point - planeOrigin;
 Vector3 d = Vector3.Project(v, planeNormal.normalized);
 Vector3 projectedPoint = point - d;

omikun

# Create a memory cgroup named 'mygroup', allowing $USER to change the parameters and run tasks in the cgroup.
sudo cgcreate -a $USER -t $USER -g memory:mygroup
# Set the memory limit to 10MB
echo 10000000 > /sys/fs/cgroup/memory/mygroup/memory.limit_in_bytes
# Run a program in the cgroup
cgexec -g memory:mygroup ls

omikun

float AngleBetweenVector2(Vector2 vec1, Vector2 vec2)
{
 	Vector2 diference = vec2 - vec1;
	float sign = (vec2.y < vec1.y)? -1.0f : 1.0f;
	return Vector2.Angle(Vector2.right, diference) * sign;
}

float cosAngleBetweenVector3(Vector3 vec1, Vector3, vec2)
{
 float dot = Vector3.Dot(vec1,vec2);