RFR: 8372203: Piecewise linear easing function [v4]

[Michael Strauß]

On Wed, 26 Nov 2025 21:57:22 GMT, Kevin Rushforth <kcr at openjdk.org> wrote:

>> Michael Strauß has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   rename LINEAR() to ofLinear()
>
> modules/javafx.graphics/src/main/java/javafx/animation/Interpolator.java line 107:
> 
>> 105:      * @param controlPoints the control points
>> 106:      * @throws NullPointerException if {@code controlPoints} is {@code null}
>> 107:      * @throws IllegalArgumentException if {@code controlPoints} is empty
> 
> Should it throw IAE if length < 2?

The CSS syntax is specified as `linear( [ <number> && <percentage>{0,2} ]# )`, where `#` means "one or more". So a single point is allowed.

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PR Review Comment: https://git.openjdk.org/jfx/pull/1977#discussion_r2566634521