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*(_:_:)

Calculates the spherical linear interpolation between the identity rotation and the LHS rotation at the RHS interpolation parameter.

Declaration

static func * (lhs: Rotation3DFloat, rhs: Float) -> Rotation3DFloat

Parameters

  • lhs:

    The rotation

  • rhs:

    The interpolation parameter.

Discussion

For example, multiplying an angle of 90° by 0.5, returns an angle of 45°:

 let rotation = Rotation3DFloat(angle: Angle2DFloat(degrees: 90),
                           axis: .init(x: 0, y: 1, z: 0))
 let rotated = (rotation * 0.5).angle.degrees
 print(rotated) // prints "45.0"

  • Note This function returns the longest path where the angle is greater than 180°,