hugo-theme-relearn/js/d3/d3-drag.min.js

// https://d3js.org/d3-drag/ v3.0.0 Copyright 2010-2021 Mike Bostock
!function(e,t){"object"==typeof exports&&"undefined"!=typeof module?t(exports,require("d3-dispatch"),require("d3-selection")):"function"==typeof define&&define.amd?define(["exports","d3-dispatch","d3-selection"],t):t((e="undefined"!=typeof globalThis?globalThis:e||self).d3=e.d3||{},e.d3,e.d3)}(this,(function(e,t,n){"use strict";const o={passive:!1},r={capture:!0,passive:!1};function i(e){e.stopImmediatePropagation()}function a(e){e.preventDefault(),e.stopImmediatePropagation()}function u(e){var t=e.document.documentElement,o=n.select(e).on("dragstart.drag",a,r);"onselectstart"in t?o.on("selectstart.drag",a,r):(t.__noselect=t.style.MozUserSelect,t.style.MozUserSelect="none")}function c(e,t){var o=e.document.documentElement,i=n.select(e).on("dragstart.drag",null);t&&(i.on("click.drag",a,r),setTimeout((function(){i.on("click.drag",null)}),0)),"onselectstart"in o?i.on("selectstart.drag",null):(o.style.MozUserSelect=o.__noselect,delete o.__noselect)}var l=e=>()=>e;function s(e,{sourceEvent:t,subject:n,target:o,identifier:r,active:i,x:a,y:u,dx:c,dy:l,dispatch:s}){Object.defineProperties(this,{type:{value:e,enumerable:!0,configurable:!0},sourceEvent:{value:t,enumerable:!0,configurable:!0},subject:{value:n,enumerable:!0,configurable:!0},target:{value:o,enumerable:!0,configurable:!0},identifier:{value:r,enumerable:!0,configurable:!0},active:{value:i,enumerable:!0,configurable:!0},x:{value:a,enumerable:!0,configurable:!0},y:{value:u,enumerable:!0,configurable:!0},dx:{value:c,enumerable:!0,configurable:!0},dy:{value:l,enumerable:!0,configurable:!0},_:{value:s}})}function d(e){return!e.ctrlKey&&!e.button}function f(){return this.parentNode}function g(e,t){return null==t?{x:e.x,y:e.y}:t}function h(){return navigator.maxTouchPoints||"ontouchstart"in this}s.prototype.on=function(){var e=this._.on.apply(this._,arguments);return e===this._?this:e},e.drag=function(){var e,v,p,b,m=d,y=f,x=g,_=h,w={},T=t.dispatch("start","drag","end"),j=0,E=0;function k(e){e.on("mousedown.drag",M).filter(_).on("touchstart.drag",z).on("touchmove.drag",D,o).on("touchend.drag touchcancel.drag",S).style("touch-action","none").style("-webkit-tap-highlight-color","rgba(0,0,0,0)")}function M(t,o){if(!b&&m.call(this,t,o)){var a=U(this,y.call(this,t,o),t,o,"mouse");a&&(n.select(t.view).on("mousemove.drag",P,r).on("mouseup.drag",q,r),u(t.view),i(t),p=!1,e=t.clientX,v=t.clientY,a("start",t))}}function P(t){if(a(t),!p){var n=t.clientX-e,o=t.clientY-v;p=n*n+o*o>E}w.mouse("drag",t)}function q(e){n.select(e.view).on("mousemove.drag mouseup.drag",null),c(e.view,p),a(e),w.mouse("end",e)}function z(e,t){if(m.call(this,e,t)){var n,o,r=e.changedTouches,a=y.call(this,e,t),u=r.length;for(n=0;n<u;++n)(o=U(this,a,e,t,r[n].identifier,r[n]))&&(i(e),o("start",e,r[n]))}}function D(e){var t,n,o=e.changedTouches,r=o.length;for(t=0;t<r;++t)(n=w[o[t].identifier])&&(a(e),n("drag",e,o[t]))}function S(e){var t,n,o=e.changedTouches,r=o.length;for(b&&clearTimeout(b),b=setTimeout((function(){b=null}),500),t=0;t<r;++t)(n=w[o[t].identifier])&&(i(e),n("end",e,o[t]))}function U(e,t,o,r,i,a){var u,c,l,d=T.copy(),f=n.pointer(a||o,t);if(null!=(l=x.call(e,new s("beforestart",{sourceEvent:o,target:k,identifier:i,active:j,x:f[0],y:f[1],dx:0,dy:0,dispatch:d}),r)))return u=l.x-f[0]||0,c=l.y-f[1]||0,function o(a,g,h){var v,p=f;switch(a){case"start":w[i]=o,v=j++;break;case"end":delete w[i],--j;case"drag":f=n.pointer(h||g,t),v=j}d.call(a,e,new s(a,{sourceEvent:g,subject:l,target:k,identifier:i,active:v,x:f[0]+u,y:f[1]+c,dx:f[0]-p[0],dy:f[1]-p[1],dispatch:d}),r)}}return k.filter=function(e){return arguments.length?(m="function"==typeof e?e:l(!!e),k):m},k.container=function(e){return arguments.length?(y="function"==typeof e?e:l(e),k):y},k.subject=function(e){return arguments.length?(x="function"==typeof e?e:l(e),k):x},k.touchable=function(e){return arguments.length?(_="function"==typeof e?e:l(!!e),k):_},k.on=function(){var e=T.on.apply(T,arguments);return e===T?k:e},k.clickDistance=function(e){return arguments.length?(E=(e=+e)*e,k):Math.sqrt(E)},k},e.dragDisable=u,e.dragEnable=c,Object.defineProperty(e,"__esMo