///// <summary>
///// Gets the center of mass of an array of Rigidbodies.
///// </summary>
//public static Vector3 GetCenterOfMass(Rigidbody[] rigidbodies) {
// Vector3 CoM = Vector3.zero;
// float c = 0f;
// for (int i = 0; i < rigidbodies.Length; i++) {
// if (rigidbodies[i].gameObject.activeInHierarchy) {
// CoM += rigidbodies[i].worldCenterOfMass * rigidbodies[i].mass;
// c += rigidbodies[i].mass;
// }
// }
// return CoM / c;
//}
///// <summary>
///// Gets the velocity of the center of mass of an array of Rigidbodies.
///// </summary>
//public static Vector3 GetCenterOfMassVelocity(Rigidbody[] rigidbodies) {
// Vector3 CoM = Vector3.zero;
// float c = 0f;
// for (int i = 0; i < rigidbodies.Length; i++) {
// if (rigidbodies[i].gameObject.activeInHierarchy) {
// CoM += rigidbodies[i].velocity * rigidbodies[i].mass;
// c += rigidbodies[i].mass;
// }
// }
// return CoM / c;
//}
///// <summary>
///// Divides an angular acceleration by an inertia tensor.
///// </summary>
//public static void DivByInertia(ref Vector3 v, Quaternion rotation, Vector3 inertiaTensor) {
// v = rotation * Div(Quaternion.Inverse(rotation) * v, inertiaTensor);
//}
///// <summary>
///// Scales an angular acceleration by an inertia tensor
///// </summary>
//public static void ScaleByInertia(ref Vector3 v, Quaternion rotation, Vector3 inertiaTensor) {
// v = rotation * Vector3.Scale(Quaternion.Inverse(rotation) * v, inertiaTensor);
//}
///// <summary>
///// Returns the angular acceleration from one vector to another.
///// </summary>
//public static Vector3 GetFromToAcceleration(Vector3 fromV, Vector3 toV) {
// Quaternion fromTo = Quaternion.FromToRotation(fromV, toV);
// float requiredAccelerationDeg = 0f;
// Vector3 axis = Vector3.zero;
// fromTo.ToAngleAxis(out requiredAccelerationDeg, out axis);
// Vector3 requiredAcceleration = requiredAccelerationDeg * axis * Mathf.Deg2Rad;
// return requiredAcceleration / Time.fixedDeltaTime;
//}
///// <summary>
///// Returns the angular acceleration from the current rigidbody rotation to Quaternion.identity.
///// Does not guarantee full accuracy with rotations around multiple axes).
///// </summary>
//public static Vector3 GetAngularAcceleration(Quaternion fromR, Quaternion toR) {
// Vector3 axis = Vector3.Cross(fromR * Vector3.forward, toR * Vector3.forward);
// Vector3 axis2 = Vector3.Cross(fromR * Vector3.up, toR * Vector3.up);
// float angle = Quaternion.Angle(fromR, toR);
// Vector3 acc = Vector3.Normalize(axis + axis2) * angle * Mathf.Deg2Rad;
// return acc / Time.fixedDeltaTime;
//}
///// <summary>
///// Returns the linear acceleration from one point to another.
///// </summary>
//public static Vector3 GetLinearAcceleration(Vector3 fromPoint, Vector3 toPoint) {
// return (toPoint - fromPoint) / Time.fixedDeltaTime;
//}
// /// <summary>
// /// The rotation expressed by the joint's axis and secondary axis
// /// </summary>
// public static Quaternion ToJointSpace(ConfigurableJoint joint) {
// Vector3 forward = Vector3.Cross (joint.axis, joint.secondaryAxis);
// Vector3 up = Vector3.Cross (forward, joint.axis);
// return Quaternion.LookRotation (forward, up);
//}
///// <summary>
///// Calculates the inertia tensor for a cuboid.
///// </summary>
//public static Vector3 CalculateInertiaTensorCuboid(Vector3 size, float mass) {
// float x2 = Mathf.Pow(size.x, 2);
// float y2 = Mathf.Pow(size.y, 2);
// float z2 = Mathf.Pow(size.z, 2);
// float mlp = 1f/12f * mass;
// return new Vector3(
// mlp * (y2 + z2),
// mlp * (x2 + z2),
// mlp * (x2 + y2));
//}
///// <summary>
///// Divide all the values in v by the respective values in v2.
///// </summary>
//public static Vector3 Div(Vector3 v, Vector3 v2) {
// return new Vector3(v.x / v2.x, v.y / v2.y, v.z / v2.z);
//}
/// <summary>
/// align to vector
/// </summary>
/// <param name="r"></param>
/// <param name="alignmentVector"></param>
/// <param name="targetVector"></param>
/// <param name="stability"></param>
/// <param name="speed"></param>
public static void AlignToVector(TSRigidBody r, TSVector alignmentVector, TSVector targetVector, FP stability, FP speed, bool debug = false)
{
if (r == null)
{
return;
}
// 围绕着某个轴进行了一个角度的旋转 angleAxis(x,y). x = 角度 y = 轴
// x 角度值为 当前转向速度 * Stability 是一个 radian 值， * 57.29 转为角度值， 除以 speed 后 才是真正的角度值
// part.angularVelocity 是当前旋转速度， 把旋转速度变为轴？
Quaternion angleAxis = Quaternion.AngleAxis(r.angularVelocity.magnitude.AsFloat() * 57.29578f * stability.AsFloat() / speed.AsFloat(), r.angularVelocity.ToVector());
// Vector3.Cross 是叉乘， alignmentVector 是当前我们把part 某个轴要对准target Vector 的向量， angleAxis 四元素乘以AlignmentVector 是把alignmentVector 方向调整为四元素方向
// targetVector 是我们想要对准的角度
// 叉乘出来的 a 就是 两个向量的九十度角的向量用来作为我们的旋转轴
Vector3 a = Vector3.Cross(angleAxis * alignmentVector.ToVector(), targetVector.ToVector() * 10f);
if (!float.IsNaN(a.x) && !float.IsNaN(a.y) && !float.IsNaN(a.z))
{
//Debug.Log(a.ToTSVector());
r.AddTorque(a.ToTSVector() * speed * speed);
Debug.DrawRay(r.position.ToVector(), alignmentVector.ToVector() * 0.3f, Color.red, 0f, false);
Debug.DrawRay(r.position.ToVector(), targetVector.ToVector() * 0.3f, Color.green, 0f, false);
}
}
// Update is called once per frame
void FixedUpdate()
{
if (Input.GetKeyDown(KeyCode.T))
{
rigidBody.AddTorque(torque.ToTSVector());
}
if (Input.GetKeyDown(KeyCode.F))
{
rigidBody.AddForce(force.ToTSVector());
}
}
public override void OnSyncedUpdate()
{
if (useSpring)
{
//Adding a spring and damper Term to the Equation of Motion
thisBody.AddTorque((-1) * TSWorldAxis * ((thisJoint.getHingeAngle() - Spring.tagetPosition) * Spring.spring + thisJoint.getAngularVel() * Spring.damper));
}
if (TSMath.Abs(thisJoint.AppliedImpulse) >= breakForce)//@TODO: Add break torque
{
thisJoint.Deactivate();
Destroy(this);
}
}
public static void ApplyExplosiveForceOnLine(TSRigidBody lineRB, FP force)
{
lineRB.AddTorque(TSVector.up * force);
}