v1.0.0-rc1

This is the first release candidate for v1.0.0, which indicates that CatRom is nearing a complete set of foundational features.

Breaking changes

• GetSplineAtTime() -> GetSegmentAtTime()
• PrecomputeArcLengthParams() -> PrecomputeUnitSpeedData()
• SolveCFrame() -> SolveCFrameLookAlong()
• SolveRotCFrame() -> SolveCFrameSquad()
• splines -> segments
• domains -> knots
• alpha and tension have been removed

Improvements

• PrecomputeUnitSpeedData() now uses Chebyshev interpolation to improve the speed and accuracy of the precompute
• Spline instantiation is roughly 15% faster
• Every method now has types

Additions

• SolveJerk(): Solves for jerk
• SolveTorsion(): Solves for torsion
• SolveCFrameFrenet(): Computes the Frenet frame as a CFrame
• SolveCFrameRMF(): Computes a rotation-minimizing frame as a CFrame via the double reflection method
• Transport(): Sweeps a Vector3 or CFrame along the spline such that the result has been twisted minimally around the spline
• GetTransportInterpolant(): A bulk version of Transport()
• SlerpNormals(): Slerps between two vectors that are normal to the spline
• GetSlerpNormalsInterpolant(): A bulk version of SlerpNormals()
• PrecomputeRMFs(): Precomputes a discrete approximation of a moving rotation-minimizing frame along the spline
• SolveBulk(): A helper method for doing the same computation at many uniformly-spaced times. Has better performance than writing a for loop manually
• SolveBoundingBox(): Returns an axis-aligned box that bounds the spline
• CreateTween(): A wrapper around TweenService for moving objects along the spline

v0.6.0

Breaking changes

• Removed SolveUniform() methods in favor of a unitSpeed boolean in the Solve() methods.
• Renamed GetSplineFromT() to GetSplineAtTime().

Fixes

• Fixed a typo that was causing the arc length parametrization LUT to never be used, making PrecomputeArcLengthParams() useless.
• Fixed an issue with SolveLength(a, b) when a and b were contained in the same interpolant. (h/t morosanu).
• Updated code with new luau syntax and Roblox methods.

v0.5.0

Additions:

• Uniform methods for arc length parameterization have returned with faster math (see #3)
• Calling PrecomputeArcLengthParams() can drastically speed up Uniform calls at a cost to accuracy
• Added a few missing static types in init.lua

Improvements:

• SolveLength() is faster and more accurate (see #2)

v0.4.2

This version fixes CatRom:SolveLength() returning incorrect results.

v0.4.1

This release brings the version number up to date with the version on Wally. Nothing else has changed.

v0.4.0

Improvements:

• Supports CatRoms with only 1 and 2 points
• Handles equal consecutive points more gracefully
• Simplified API
• SolveRotCFrame() acts more like a slerp
• Significantly faster instantiation
• Faster calculations across the board

BREAKING CHANGES:

• Chain and Spline have been combined into a single CatRom class
• Uniform methods have been removed. These will return when I have faster math for them.

v0.3.1

Fix overlapping points throwing errors.

v0.3.0

• Fixed flickering caused by failing to find a spline along a chain
• Renamed "Arc" methods to "Uniform"
• Removed "Unit" from SolveUnitTangent, SolveUnitNormal, SolveUnitBinormal, and their Uniform counterparts
• Added scripts to generate Uniform methods and Chain methods

v0.2.0

• Refactored the module into multiple files
• Removed submodules
• Renamed module and repo from "CatmullRomSpline" to "CatRom"

v0.1.0

It technically works. Don't forget to download t as well.