cione-comp-lib/lib/node_modules/claygl/src/camera/Perspective.js

`$ yarn add cione-comp-lib` 或者 `$ npm i cione-comp-lib -S`

"use strict";Object.defineProperties(exports,{__esModule:{value:!0},[Symbol.toStringTag]:{value:"Module"}});var t=require("../Camera.js"),e=t.default.extend({fov:50,aspect:1,near:.1,far:2e3},{updateProjectionMatrix:function(){var t=this.fov/180*Math.PI;this.projectionMatrix.perspective(t,this.aspect,this.near,this.far)},decomposeProjectionMatrix:function(){var t=this.projectionMatrix.array,e=2*Math.atan(1/t[5]);this.fov=e/Math.PI*180,this.aspect=t[5]/t[0],this.near=t[14]/(t[10]-1),this.far=t[14]/(t[10]+1)},clone:function(){var e=t.default.prototype.clone.call(this);return e.fov=this.fov,e.aspect=this.aspect,e.near=this.near,e.far=this.far,e}});exports.default=e;