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Close Your name Your email Suggestion* Switch to Manual DescriptionQuaternions are used to represent rotations.
A quaternion is a four-tuple of real numbers {x,y,z,w}. A quaternion is a mathematically convenient alternative to the euler angle representation. You can interpolate a quaternion without experiencing gimbal lock. You can also use a quaternion to concatenate a series of rotations into a single representation.
Unity internally uses Quaternions to represent all rotations.
In most cases, you can use existing rotations from methods such as Transform.localRotation or Transform.rotation to construct new rotations. For example, use existing rotations to smoothly interpolate between two rotations. The most used Quaternion functions are as follows: Quaternion.LookRotation, Quaternion.Angle, Quaternion.Euler, Quaternion.Slerp, Quaternion.FromToRotation, and Quaternion.identity.
You can use the Quaternion.operator * to rotate one rotation by another, or to rotate a vector by a rotation.
Note that Unity expects Quaternions to be normalized.
Static Properties Property Description identity The identity rotation (Read Only). Properties Property Description eulerAngles Returns or sets the euler angle representation of the rotation in degrees. normalized Returns this quaternion with a magnitude of 1 (Read Only). this[int] Access the x, y, z, w components using [0], [1], [2], [3] respectively. w W component of the Quaternion. Do not directly modify quaternions. x X component of the Quaternion. Don't modify this directly unless you know quaternions inside out. y Y component of the Quaternion. Don't modify this directly unless you know quaternions inside out. z Z component of the Quaternion. Don't modify this directly unless you know quaternions inside out. Constructors Constructor Description Quaternion Constructs new Quaternion with given x,y,z,w components. Public Methods Method Description Set Set x, y, z and w components of an existing Quaternion. SetFromToRotation Creates a rotation which rotates from fromDirection to toDirection. SetLookRotation Creates a rotation with the specified forward and upwards directions. ToAngleAxis Converts a rotation to angle-axis representation. ToString Returns a formatted string for this quaternion. Static Methods Method Description Angle Returns the angle in degrees between two rotations a and b. The resulting angle ranges from 0 to 180. AngleAxis Creates a rotation which rotates angle degrees around axis. Dot The dot product between two rotations. Euler Converts an input Euler angle rotation specified as three floats to a Quaternion. FromToRotation Creates a rotation from fromDirection to toDirection. Inverse Returns the Inverse of rotation. Lerp Interpolates between a and b by t and normalizes the result afterwards. LerpUnclamped Interpolates between a and b by t and normalizes the result afterwards. The parameter t is not clamped. LookRotation Creates a rotation with the specified forward and upwards directions. Normalize Converts this quaternion to a quaternion with the same orientation but with a magnitude of 1.0. RotateTowards Rotates a rotation from towards to. Slerp Spherically linear interpolates between unit quaternions a and b by a ratio of t. SlerpUnclamped Spherically linear interpolates between unit quaternions a and b by t. Operators Operator Description operator * Combines rotations lhs and rhs. operator == Are two quaternions equal to each other?RetroSearch is an open source project built by @garambo | Open a GitHub Issue
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