react-filerobot-video-editor/lib/utils/calculateZoomData.js

React component version of filerobot video editor (FVE).

import _defineProperty from"@babel/runtime/helpers/defineProperty";function ownKeys(a,b){var c=Object.keys(a);if(Object.getOwnPropertySymbols){var d=Object.getOwnPropertySymbols(a);b&&(d=d.filter(function(b){return Object.getOwnPropertyDescriptor(a,b).enumerable})),c.push.apply(c,d)}return c}function _objectSpread(a){for(var b,c=1;c<arguments.length;c++)b=null==arguments[c]?{}:arguments[c],c%2?ownKeys(Object(b),!0).forEach(function(c){_defineProperty(a,c,b[c])}):Object.getOwnPropertyDescriptors?Object.defineProperties(a,Object.getOwnPropertyDescriptors(b)):ownKeys(Object(b)).forEach(function(c){Object.defineProperty(a,c,Object.getOwnPropertyDescriptor(b,c))});return a}import{DEFAULT_ZOOM_FACTOR}from"./constants";var calculateZoomData=function(a,b,c,d){if(a.factor===DEFAULT_ZOOM_FACTOR)return{x:0,y:0,factor:DEFAULT_ZOOM_FACTOR};var e=a.factor>b.factor,f={x:(a.x-b.x||0)/b.factor,y:(a.y-b.y||0)/b.factor},g={x:a.x-f.x*a.factor,y:a.y-f.y*a.factor};if(e&&1===b.factor||(g.x=Math.min(0,Math.max(g.x,c*(1-b.factor))),g.y=Math.min(0,Math.max(g.y,d*(1-b.factor)))),1>a.factor){var h=c-c*a.factor,i=d-d*a.factor;g.x+=h/2,g.y+=i/2}return _objectSpread(_objectSpread({},g),{},{factor:a.factor})};export default calculateZoomData;