Quaternion and Euler convertion

[ysc3839]

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//http://www.euclideanspace.com/maths/geometry/rotations/conversions/eulerToQuaternion/index.htm
function Vector::toQuaternion()
{
 // Assuming the angles are in radians.
 local c1 = ::cos(this.x / 2),
 s1 = ::sin(this.x / 2),
 c2 = ::cos(this.z / 2),
 s2 = ::sin(this.z / 2),
 c3 = ::cos(this.y / 2),
 s3 = ::sin(this.y / 2),
 c1c2 = c1 * c2,
 s1s2 = s1 * s2,
 x = c1c2 * s3 + s1s2 * c3,
 y = s1 * c2 * c3 + c1 * s2 * s3,
 z = c1 * s2 * c3 - s1 * c2 * s3,
 w = c1c2 * c3 - s1s2 * s3;
 return ::Quaternion(x, y, z, w);
}
EntityVector.rawset("toQuaternion", Vector.toQuaternion);

// http://www.euclideanspace.com/maths/geometry/rotations/conversions/quaternionToEuler/index.htm
function Quaternion::toEuler()
{
 local heading, attitude, bank;
 local test = this.x * this.y + this.z * this.w;
 if (test > 0.499) { // singularity at north pole
  heading = 2 * ::atan2(this.x, this.w);
  attitude = PI / 2;
 } else if (test < -0.499) { // singularity at south pole
  heading = -2 * ::atan2(this.x, this.w);
  attitude = -PI / 2;
 } else {
  local sqx = this.x * this.x, sqy = this.y * this.y, sqz = this.z * this.z;
  heading = ::atan2(2 * this.y * this.w - 2 * this.x * this.z , 1 - 2 * sqy - 2 * sqz); // X
  attitude = ::asin(2 * test); // Z
  bank = ::atan2(2 * this.x * this.w - 2 * this.y * this.z , 1 - 2 * sqx - 2 * sqz); // Y
 }
 return ::Vector(heading, bank, attitude);
}
EntityQuaternon.rawset("toEuler", Quaternion.toEuler);

[KAKAN]

Well, I have one question. Try this code:

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print( EntityVector );
print( EntityQuaternion );You'll receive that the index x doesn't exist.( x is the value )
And also, if it works, try printing typeof EntityVector
It's a class. So are you sure that those 2 lines( Vex and Quaternion .rawset ) are going to work?
That's my question. Further more, you don't need to use rawset

[ysc3839]

Well, I have one question. Try this code:

Code Select Expand

print( EntityVector );
print( EntityQuaternion );You'll receive that the index x doesn't exist.( x is the value )
And also, if it works, try printing typeof EntityVector
It's a class. So are you sure that those 2 lines( Vex and Quaternion .rawset ) are going to work?
That's my question. Further more, you don't need to use rawset

First, there is a typo about "EntityQuaternion". In old version it's "EntityQuaternon". It has been fixed in new version. But the binaries in download page haven't update.
So your code won't work in old version, but works in new version.
And I tested this code, that's nothing wrong about rawset. Also I want to know why not use rawset?

[ysc3839]

That thing is what I want for http://forum.vc-mp.org/?topic=2207.0
Thanks.
btw great link http://www.euclideanspace.com/maths/geometry/rotations/conversions/

I wrote this code bacause I need to test object rotation. I'm happy to hear that it can help you!