weft_graphics::enumInterpolationpub enum Interpolation { Step, Linear, Cubic, }How an animation channel moves between keyframes.VariantsStepStepJumps to each keyframe's value.LinearLinearMoves in a straight line between keyframes (rotations by slerp).CubicCubicCubic spline: each keyframe has (in-tangent, value, out-tangent).Trait implementationsimpl Clone for Interpolationimpl Copy for Interpolationimpl Debug for Interpolationimpl Eq for Interpolationimpl PartialEq for Interpolationimpl StructuralPartialEq for Interpolation