-
Notifications
You must be signed in to change notification settings - Fork 4.3k
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
- Loading branch information
Showing
4 changed files
with
138 additions
and
71 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file was deleted.
Oops, something went wrong.
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,93 @@ | ||
| /** | ||
| * @typedef {Object} WPPoint | ||
| * @property {number} x The horizontal coordinate. | ||
| * @property {number} y The vertical coordinate. | ||
| */ | ||
|
|
||
| /** | ||
| * Clamps a value to a range. Uses the CSS `clamp()` ordering for arguments. | ||
| * | ||
| * @param {number} min Minimum range. | ||
| * @param {number} value Value to clamp. | ||
| * @param {number} max Maximum range. | ||
| * | ||
| * @return {number} Clamped value. | ||
| */ | ||
| function clamp( min, value, max ) { | ||
| return Math.max( min, Math.min( value, max ) ); | ||
| } | ||
|
|
||
| /** | ||
| * Evaluates a linear function passing through two points at the given x value. | ||
| * | ||
| * Example: | ||
| * f(x) | ||
| * │ ╲ | ||
| * │ * (p0) | ||
| * │ ╲ | ||
| * │ ╲ | ||
| * │ (p1) * | ||
| * │ ╲ | ||
| * └──────────── x | ||
| * | ||
| * @param {WPPoint} p0 First point. | ||
| * @param {WPPoint} p1 Second point. | ||
| * @param {number} x Value to evaluate at. | ||
| * | ||
| * @return {number} Result of the two-point linear function at x. | ||
| */ | ||
| function twoPointLinearFn( p0, p1, x ) { | ||
| return ( ( p1.y - p0.y ) / ( p1.x - p0.x ) ) * ( x - p0.x ) + p0.y; | ||
| } | ||
|
|
||
| /** | ||
| * Evaluates a two-point linear function at a given x value, clamped to the range of the points. | ||
| * | ||
| * Example: | ||
| * f(x) | ||
| * │ ───* (p0) | ||
| * │ ╲ | ||
| * │ ╲ | ||
| * │ (p1) *─── | ||
| * └──────────── x | ||
| * | ||
| * @param {WPPoint} p0 First point. | ||
| * @param {WPPoint} p1 Second point. | ||
| * @param {number} x Value to evaluate at. | ||
| * | ||
| * @return {number} Result of the two-point linear function clamped to the range of the points. | ||
| */ | ||
| function clampedTwoPointLinearFn( p0, p1, x ) { | ||
| return clamp( | ||
| Math.min( p0.y, p1.y ), | ||
| twoPointLinearFn( p0, p1, x ), | ||
| Math.max( p0.y, p1.y ) | ||
| ); | ||
| } | ||
|
|
||
| /** | ||
| * Computes the iframe scale using a start and end width/scale pair and the current width. | ||
| * | ||
| * The scale is clamped outside the points and is linearly interpolated between. | ||
| * | ||
| * Example: | ||
| * scale | ||
| * │ ───* (start) | ||
| * │ ╲ | ||
| * │ ╲ | ||
| * │ (end) *─── | ||
| * └──────────── width | ||
| * | ||
| * @param {Object} start First width and scale pair. | ||
| * @param {Object} end Second width and scale pair. | ||
| * @param {number} currentWidth Current width. | ||
| * | ||
| * @return {number} The scale of the current width between the two points. | ||
| */ | ||
| export function computeIFrameScale( start, end, currentWidth ) { | ||
| return clampedTwoPointLinearFn( | ||
| { x: start.width, y: start.scale }, | ||
| { x: end.width, y: end.scale }, | ||
| currentWidth | ||
| ); | ||
| } |