element-web/src/utils/AnimationUtils.ts
David Langley 69ee8fd96a
Change License: AGPL + Element Commercial (#28856)
* Add commercial licence and update config files

* Update license in headers

* Revert "Update license in headers"

This reverts commit 7ed7949485e88889a9ffc8075a9df1f8e936777e.

* Update only spdx id

* Remove LicenseRef- from package.json

LicenseRef- no longer allowed in npm v3 package.json
This fixes the warning in the logs and failing build check.
2025-01-06 11:18:54 +00:00

25 lines
808 B
TypeScript

/*
Copyright 2024 New Vector Ltd.
Copyright 2021 Šimon Brandner <simon.bra.ag@gmail.com>
SPDX-License-Identifier: AGPL-3.0-only OR GPL-3.0-only OR LicenseRef-Element-Commercial
Please see LICENSE files in the repository root for full details.
*/
import { clamp } from "lodash";
/**
* This method linearly interpolates between two points (start, end). This is
* most commonly used to find a point some fraction of the way along a line
* between two endpoints (e.g. to move an object gradually between those
* points).
* @param {number} start the starting point
* @param {number} end the ending point
* @param {number} amt the interpolant
* @returns
*/
export function lerp(start: number, end: number, amt: number): number {
amt = clamp(amt, 0, 1);
return (1 - amt) * start + amt * end;
}