@thednp/bezier-easing/dist/bezier-easing.js

🍬 A Typescript based cubic-bezier easing functions factory for KUTE.js based on UnitBezier

var CubicBezier=function(){"use strict";var C=Object.defineProperty;var x=(n,i,e)=>i in n?C(n,i,{enumerable:!0,configurable:!0,writable:!0,value:e}):n[i]=e;var h=(n,i,e)=>x(n,typeof i!="symbol"?i+"":i,e);class n{constructor(e,l,t,s,c){h(this,"cx");h(this,"bx");h(this,"ax");h(this,"cy");h(this,"by");h(this,"ay");const r=e||0,a=l||0,u=t||1,p=s||1,v=o=>typeof o=="number",y=[e,l,t,s].every(v),m=c||(y?`cubic-bezier(${[r,a,u,p].join(",")})`:"linear");this.cx=3*r,this.bx=3*(u-r)-this.cx,this.ax=1-this.cx-this.bx,this.cy=3*a,this.by=3*(p-a)-this.cy,this.ay=1-this.cy-this.by;const b=o=>this.sampleCurveY(this.solveCurveX(o));return Object.defineProperty(b,"name",{writable:!0}),b.name=m,b}sampleCurveX(e){return((this.ax*e+this.bx)*e+this.cx)*e}sampleCurveY(e){return((this.ay*e+this.by)*e+this.cy)*e}sampleCurveDerivativeX(e){return(3*this.ax*e+2*this.bx)*e+this.cx}solveCurveX(e){if(e<=0)return 0;if(e>=1)return 1;let t=e,s=0,c=0;for(let u=0;u<8;u+=1){if(s=this.sampleCurveX(t)-e,Math.abs(s)<1e-6)return t;if(c=this.sampleCurveDerivativeX(t),Math.abs(c)<1e-6)break;t-=s/c}let r=0,a=1;for(t=e;r<a;){if(s=this.sampleCurveX(t),Math.abs(s-e)<1e-6)return t;e>s?r=t:a=t,t=(a-r)*.5+r}return t}}return n}();
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