Quat¶
Category: Built-In Types
Brief Description¶
Quaternion.
Member Functions¶
| Quat | Quat ( float x, float y, float z, float w ) |
| Quat | Quat ( Vector3 axis, float angle ) |
| Quat | Quat ( Matrix3 from ) |
| Quat | cubic_slerp ( Quat b, Quat pre_a, Quat post_b, float t ) |
| float | dot ( Quat b ) |
| Quat | inverse ( ) |
| float | length ( ) |
| float | length_squared ( ) |
| Quat | normalized ( ) |
| Quat | slerp ( Quat b, float t ) |
| Quat | slerpni ( Quat b, float t ) |
| Vector3 | xform ( Vector3 v ) |
Description¶
Quaternion is a 4 dimensional vector that is used to represent a rotation. It mainly exists to perform SLERP (spherical-linear interpolation) between to rotations obtained by a Matrix3 cheaply. Adding quaternions also cheaply adds the rotations, however quaternions need to be often normalized, or else they suffer from precision issues.
Member Function Description¶
Returns the dot product between two quaternions.
- Quat inverse ( )
Returns the inverse of the quaternion (applies to the inverse rotation too).
- float length ( )
Returns the length of the quaternion.
- float length_squared ( )
Returns the length of the quaternion, squared.
- Quat normalized ( )
Returns a copy of the quaternion, normalized to unit length.
Perform a spherical-linear interpolation with another quaternion.