RFR: 8372203: Piecewise linear easing function [v4]

[Michael Strauß]

On Wed, 26 Nov 2025 22:26:40 GMT, Michael Strauß <mstrauss at openjdk.org> wrote:

>> 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.

I've noticed that the text in cssref.html says "two or more", not "one or more". I'm going to change that.

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PR Review Comment: https://git.openjdk.org/jfx/pull/1977#discussion_r2566645780