mirror of
https://github.com/vector-im/element-web.git
synced 2024-11-18 22:58:18 +08:00
33 lines
1.1 KiB
TypeScript
33 lines
1.1 KiB
TypeScript
/*
|
|
Copyright 2021 Šimon Brandner <simon.bra.ag@gmail.com>
|
|
|
|
Licensed under the Apache License, Version 2.0 (the "License");
|
|
you may not use this file except in compliance with the License.
|
|
You may obtain a copy of the License at
|
|
|
|
http://www.apache.org/licenses/LICENSE-2.0
|
|
|
|
Unless required by applicable law or agreed to in writing, software
|
|
distributed under the License is distributed on an "AS IS" BASIS,
|
|
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
See the License for the specific language governing permissions and
|
|
limitations under the License.
|
|
*/
|
|
|
|
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) {
|
|
amt = clamp(amt, 0, 1);
|
|
return (1 - amt) * start + amt * end;
|
|
}
|