| 1 | // https://d3js.org/d3-zoom/ v3.0.0 Copyright 2010-2021 Mike Bostock
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| 2 | (function (global, factory) {
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| 3 | typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports, require('d3-dispatch'), require('d3-drag'), require('d3-interpolate'), require('d3-selection'), require('d3-transition')) :
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| 4 | typeof define === 'function' && define.amd ? define(['exports', 'd3-dispatch', 'd3-drag', 'd3-interpolate', 'd3-selection', 'd3-transition'], factory) :
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| 5 | (global = typeof globalThis !== 'undefined' ? globalThis : global || self, factory(global.d3 = global.d3 || {}, global.d3, global.d3, global.d3, global.d3, global.d3));
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| 6 | }(this, (function (exports, d3Dispatch, d3Drag, d3Interpolate, d3Selection, d3Transition) { 'use strict';
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| 7 |
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| 8 | var constant = x => () => x;
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| 9 |
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| 10 | function ZoomEvent(type, {
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| 11 | sourceEvent,
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| 12 | target,
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| 13 | transform,
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| 14 | dispatch
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| 15 | }) {
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| 16 | Object.defineProperties(this, {
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| 17 | type: {value: type, enumerable: true, configurable: true},
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| 18 | sourceEvent: {value: sourceEvent, enumerable: true, configurable: true},
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| 19 | target: {value: target, enumerable: true, configurable: true},
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| 20 | transform: {value: transform, enumerable: true, configurable: true},
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| 21 | _: {value: dispatch}
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| 22 | });
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| 23 | }
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| 24 |
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| 25 | function Transform(k, x, y) {
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| 26 | this.k = k;
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| 27 | this.x = x;
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| 28 | this.y = y;
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| 29 | }
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| 30 |
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| 31 | Transform.prototype = {
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| 32 | constructor: Transform,
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| 33 | scale: function(k) {
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| 34 | return k === 1 ? this : new Transform(this.k * k, this.x, this.y);
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| 35 | },
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| 36 | translate: function(x, y) {
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| 37 | return x === 0 & y === 0 ? this : new Transform(this.k, this.x + this.k * x, this.y + this.k * y);
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| 38 | },
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| 39 | apply: function(point) {
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| 40 | return [point[0] * this.k + this.x, point[1] * this.k + this.y];
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| 41 | },
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| 42 | applyX: function(x) {
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| 43 | return x * this.k + this.x;
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| 44 | },
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| 45 | applyY: function(y) {
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| 46 | return y * this.k + this.y;
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| 47 | },
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| 48 | invert: function(location) {
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| 49 | return [(location[0] - this.x) / this.k, (location[1] - this.y) / this.k];
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| 50 | },
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| 51 | invertX: function(x) {
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| 52 | return (x - this.x) / this.k;
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| 53 | },
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| 54 | invertY: function(y) {
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| 55 | return (y - this.y) / this.k;
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| 56 | },
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| 57 | rescaleX: function(x) {
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| 58 | return x.copy().domain(x.range().map(this.invertX, this).map(x.invert, x));
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| 59 | },
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| 60 | rescaleY: function(y) {
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| 61 | return y.copy().domain(y.range().map(this.invertY, this).map(y.invert, y));
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| 62 | },
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| 63 | toString: function() {
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| 64 | return "translate(" + this.x + "," + this.y + ") scale(" + this.k + ")";
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| 65 | }
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| 66 | };
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| 67 |
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| 68 | var identity = new Transform(1, 0, 0);
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| 69 |
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| 70 | transform.prototype = Transform.prototype;
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| 71 |
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| 72 | function transform(node) {
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| 73 | while (!node.__zoom) if (!(node = node.parentNode)) return identity;
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| 74 | return node.__zoom;
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| 75 | }
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| 76 |
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| 77 | function nopropagation(event) {
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| 78 | event.stopImmediatePropagation();
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| 79 | }
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| 80 |
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| 81 | function noevent(event) {
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| 82 | event.preventDefault();
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| 83 | event.stopImmediatePropagation();
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| 84 | }
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| 85 |
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| 86 | // Ignore right-click, since that should open the context menu.
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| 87 | // except for pinch-to-zoom, which is sent as a wheel+ctrlKey event
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| 88 | function defaultFilter(event) {
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| 89 | return (!event.ctrlKey || event.type === 'wheel') && !event.button;
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| 90 | }
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| 91 |
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| 92 | function defaultExtent() {
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| 93 | var e = this;
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| 94 | if (e instanceof SVGElement) {
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| 95 | e = e.ownerSVGElement || e;
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| 96 | if (e.hasAttribute("viewBox")) {
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| 97 | e = e.viewBox.baseVal;
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| 98 | return [[e.x, e.y], [e.x + e.width, e.y + e.height]];
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| 99 | }
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| 100 | return [[0, 0], [e.width.baseVal.value, e.height.baseVal.value]];
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| 101 | }
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| 102 | return [[0, 0], [e.clientWidth, e.clientHeight]];
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| 103 | }
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| 104 |
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| 105 | function defaultTransform() {
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| 106 | return this.__zoom || identity;
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| 107 | }
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| 108 |
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| 109 | function defaultWheelDelta(event) {
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| 110 | return -event.deltaY * (event.deltaMode === 1 ? 0.05 : event.deltaMode ? 1 : 0.002) * (event.ctrlKey ? 10 : 1);
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| 111 | }
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| 112 |
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| 113 | function defaultTouchable() {
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| 114 | return navigator.maxTouchPoints || ("ontouchstart" in this);
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| 115 | }
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| 116 |
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| 117 | function defaultConstrain(transform, extent, translateExtent) {
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| 118 | var dx0 = transform.invertX(extent[0][0]) - translateExtent[0][0],
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| 119 | dx1 = transform.invertX(extent[1][0]) - translateExtent[1][0],
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| 120 | dy0 = transform.invertY(extent[0][1]) - translateExtent[0][1],
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| 121 | dy1 = transform.invertY(extent[1][1]) - translateExtent[1][1];
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| 122 | return transform.translate(
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| 123 | dx1 > dx0 ? (dx0 + dx1) / 2 : Math.min(0, dx0) || Math.max(0, dx1),
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| 124 | dy1 > dy0 ? (dy0 + dy1) / 2 : Math.min(0, dy0) || Math.max(0, dy1)
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| 125 | );
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| 126 | }
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| 127 |
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| 128 | function zoom() {
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| 129 | var filter = defaultFilter,
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| 130 | extent = defaultExtent,
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| 131 | constrain = defaultConstrain,
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| 132 | wheelDelta = defaultWheelDelta,
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| 133 | touchable = defaultTouchable,
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| 134 | scaleExtent = [0, Infinity],
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| 135 | translateExtent = [[-Infinity, -Infinity], [Infinity, Infinity]],
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| 136 | duration = 250,
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| 137 | interpolate = d3Interpolate.interpolateZoom,
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| 138 | listeners = d3Dispatch.dispatch("start", "zoom", "end"),
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| 139 | touchstarting,
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| 140 | touchfirst,
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| 141 | touchending,
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| 142 | touchDelay = 500,
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| 143 | wheelDelay = 150,
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| 144 | clickDistance2 = 0,
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| 145 | tapDistance = 10;
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| 146 |
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| 147 | function zoom(selection) {
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| 148 | selection
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| 149 | .property("__zoom", defaultTransform)
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| 150 | .on("wheel.zoom", wheeled, {passive: false})
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| 151 | .on("mousedown.zoom", mousedowned)
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| 152 | .on("dblclick.zoom", dblclicked)
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| 153 | .filter(touchable)
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| 154 | .on("touchstart.zoom", touchstarted)
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| 155 | .on("touchmove.zoom", touchmoved)
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| 156 | .on("touchend.zoom touchcancel.zoom", touchended)
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| 157 | .style("-webkit-tap-highlight-color", "rgba(0,0,0,0)");
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| 158 | }
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| 159 |
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| 160 | zoom.transform = function(collection, transform, point, event) {
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| 161 | var selection = collection.selection ? collection.selection() : collection;
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| 162 | selection.property("__zoom", defaultTransform);
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| 163 | if (collection !== selection) {
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| 164 | schedule(collection, transform, point, event);
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| 165 | } else {
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| 166 | selection.interrupt().each(function() {
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| 167 | gesture(this, arguments)
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| 168 | .event(event)
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| 169 | .start()
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| 170 | .zoom(null, typeof transform === "function" ? transform.apply(this, arguments) : transform)
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| 171 | .end();
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| 172 | });
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| 173 | }
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| 174 | };
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| 175 |
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| 176 | zoom.scaleBy = function(selection, k, p, event) {
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| 177 | zoom.scaleTo(selection, function() {
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| 178 | var k0 = this.__zoom.k,
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| 179 | k1 = typeof k === "function" ? k.apply(this, arguments) : k;
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| 180 | return k0 * k1;
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| 181 | }, p, event);
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| 182 | };
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| 183 |
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| 184 | zoom.scaleTo = function(selection, k, p, event) {
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| 185 | zoom.transform(selection, function() {
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| 186 | var e = extent.apply(this, arguments),
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| 187 | t0 = this.__zoom,
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| 188 | p0 = p == null ? centroid(e) : typeof p === "function" ? p.apply(this, arguments) : p,
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| 189 | p1 = t0.invert(p0),
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| 190 | k1 = typeof k === "function" ? k.apply(this, arguments) : k;
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| 191 | return constrain(translate(scale(t0, k1), p0, p1), e, translateExtent);
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| 192 | }, p, event);
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| 193 | };
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| 194 |
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| 195 | zoom.translateBy = function(selection, x, y, event) {
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| 196 | zoom.transform(selection, function() {
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| 197 | return constrain(this.__zoom.translate(
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| 198 | typeof x === "function" ? x.apply(this, arguments) : x,
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| 199 | typeof y === "function" ? y.apply(this, arguments) : y
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| 200 | ), extent.apply(this, arguments), translateExtent);
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| 201 | }, null, event);
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| 202 | };
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| 203 |
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| 204 | zoom.translateTo = function(selection, x, y, p, event) {
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| 205 | zoom.transform(selection, function() {
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| 206 | var e = extent.apply(this, arguments),
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| 207 | t = this.__zoom,
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| 208 | p0 = p == null ? centroid(e) : typeof p === "function" ? p.apply(this, arguments) : p;
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| 209 | return constrain(identity.translate(p0[0], p0[1]).scale(t.k).translate(
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| 210 | typeof x === "function" ? -x.apply(this, arguments) : -x,
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| 211 | typeof y === "function" ? -y.apply(this, arguments) : -y
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| 212 | ), e, translateExtent);
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| 213 | }, p, event);
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| 214 | };
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| 215 |
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| 216 | function scale(transform, k) {
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| 217 | k = Math.max(scaleExtent[0], Math.min(scaleExtent[1], k));
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| 218 | return k === transform.k ? transform : new Transform(k, transform.x, transform.y);
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| 219 | }
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| 220 |
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| 221 | function translate(transform, p0, p1) {
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| 222 | var x = p0[0] - p1[0] * transform.k, y = p0[1] - p1[1] * transform.k;
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| 223 | return x === transform.x && y === transform.y ? transform : new Transform(transform.k, x, y);
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| 224 | }
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| 225 |
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| 226 | function centroid(extent) {
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| 227 | return [(+extent[0][0] + +extent[1][0]) / 2, (+extent[0][1] + +extent[1][1]) / 2];
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| 228 | }
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| 229 |
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| 230 | function schedule(transition, transform, point, event) {
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| 231 | transition
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| 232 | .on("start.zoom", function() { gesture(this, arguments).event(event).start(); })
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| 233 | .on("interrupt.zoom end.zoom", function() { gesture(this, arguments).event(event).end(); })
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| 234 | .tween("zoom", function() {
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| 235 | var that = this,
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| 236 | args = arguments,
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| 237 | g = gesture(that, args).event(event),
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| 238 | e = extent.apply(that, args),
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| 239 | p = point == null ? centroid(e) : typeof point === "function" ? point.apply(that, args) : point,
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| 240 | w = Math.max(e[1][0] - e[0][0], e[1][1] - e[0][1]),
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| 241 | a = that.__zoom,
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| 242 | b = typeof transform === "function" ? transform.apply(that, args) : transform,
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| 243 | i = interpolate(a.invert(p).concat(w / a.k), b.invert(p).concat(w / b.k));
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| 244 | return function(t) {
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| 245 | if (t === 1) t = b; // Avoid rounding error on end.
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| 246 | else { var l = i(t), k = w / l[2]; t = new Transform(k, p[0] - l[0] * k, p[1] - l[1] * k); }
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| 247 | g.zoom(null, t);
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| 248 | };
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| 249 | });
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| 250 | }
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| 251 |
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| 252 | function gesture(that, args, clean) {
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| 253 | return (!clean && that.__zooming) || new Gesture(that, args);
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| 254 | }
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| 255 |
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| 256 | function Gesture(that, args) {
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| 257 | this.that = that;
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| 258 | this.args = args;
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| 259 | this.active = 0;
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| 260 | this.sourceEvent = null;
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| 261 | this.extent = extent.apply(that, args);
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| 262 | this.taps = 0;
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| 263 | }
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| 264 |
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| 265 | Gesture.prototype = {
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| 266 | event: function(event) {
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| 267 | if (event) this.sourceEvent = event;
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| 268 | return this;
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| 269 | },
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| 270 | start: function() {
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| 271 | if (++this.active === 1) {
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| 272 | this.that.__zooming = this;
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| 273 | this.emit("start");
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| 274 | }
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| 275 | return this;
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| 276 | },
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| 277 | zoom: function(key, transform) {
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| 278 | if (this.mouse && key !== "mouse") this.mouse[1] = transform.invert(this.mouse[0]);
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| 279 | if (this.touch0 && key !== "touch") this.touch0[1] = transform.invert(this.touch0[0]);
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| 280 | if (this.touch1 && key !== "touch") this.touch1[1] = transform.invert(this.touch1[0]);
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| 281 | this.that.__zoom = transform;
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| 282 | this.emit("zoom");
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| 283 | return this;
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| 284 | },
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| 285 | end: function() {
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| 286 | if (--this.active === 0) {
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| 287 | delete this.that.__zooming;
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| 288 | this.emit("end");
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| 289 | }
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| 290 | return this;
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| 291 | },
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| 292 | emit: function(type) {
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| 293 | var d = d3Selection.select(this.that).datum();
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| 294 | listeners.call(
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| 295 | type,
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| 296 | this.that,
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| 297 | new ZoomEvent(type, {
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| 298 | sourceEvent: this.sourceEvent,
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| 299 | target: zoom,
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| 300 | type,
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| 301 | transform: this.that.__zoom,
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| 302 | dispatch: listeners
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| 303 | }),
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| 304 | d
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| 305 | );
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| 306 | }
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| 307 | };
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| 308 |
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| 309 | function wheeled(event, ...args) {
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| 310 | if (!filter.apply(this, arguments)) return;
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| 311 | var g = gesture(this, args).event(event),
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| 312 | t = this.__zoom,
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| 313 | k = Math.max(scaleExtent[0], Math.min(scaleExtent[1], t.k * Math.pow(2, wheelDelta.apply(this, arguments)))),
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| 314 | p = d3Selection.pointer(event);
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| 315 |
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| 316 | // If the mouse is in the same location as before, reuse it.
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| 317 | // If there were recent wheel events, reset the wheel idle timeout.
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| 318 | if (g.wheel) {
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| 319 | if (g.mouse[0][0] !== p[0] || g.mouse[0][1] !== p[1]) {
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| 320 | g.mouse[1] = t.invert(g.mouse[0] = p);
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| 321 | }
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| 322 | clearTimeout(g.wheel);
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| 323 | }
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| 324 |
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| 325 | // If this wheel event won’t trigger a transform change, ignore it.
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| 326 | else if (t.k === k) return;
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| 327 |
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| 328 | // Otherwise, capture the mouse point and location at the start.
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| 329 | else {
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| 330 | g.mouse = [p, t.invert(p)];
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| 331 | d3Transition.interrupt(this);
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| 332 | g.start();
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| 333 | }
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| 334 |
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| 335 | noevent(event);
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| 336 | g.wheel = setTimeout(wheelidled, wheelDelay);
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| 337 | g.zoom("mouse", constrain(translate(scale(t, k), g.mouse[0], g.mouse[1]), g.extent, translateExtent));
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| 338 |
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| 339 | function wheelidled() {
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| 340 | g.wheel = null;
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| 341 | g.end();
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| 342 | }
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| 343 | }
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| 344 |
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| 345 | function mousedowned(event, ...args) {
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| 346 | if (touchending || !filter.apply(this, arguments)) return;
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| 347 | var currentTarget = event.currentTarget,
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| 348 | g = gesture(this, args, true).event(event),
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| 349 | v = d3Selection.select(event.view).on("mousemove.zoom", mousemoved, true).on("mouseup.zoom", mouseupped, true),
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| 350 | p = d3Selection.pointer(event, currentTarget),
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| 351 | x0 = event.clientX,
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| 352 | y0 = event.clientY;
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| 353 |
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| 354 | d3Drag.dragDisable(event.view);
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| 355 | nopropagation(event);
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| 356 | g.mouse = [p, this.__zoom.invert(p)];
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| 357 | d3Transition.interrupt(this);
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| 358 | g.start();
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| 359 |
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| 360 | function mousemoved(event) {
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| 361 | noevent(event);
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| 362 | if (!g.moved) {
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| 363 | var dx = event.clientX - x0, dy = event.clientY - y0;
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| 364 | g.moved = dx * dx + dy * dy > clickDistance2;
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| 365 | }
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| 366 | g.event(event)
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| 367 | .zoom("mouse", constrain(translate(g.that.__zoom, g.mouse[0] = d3Selection.pointer(event, currentTarget), g.mouse[1]), g.extent, translateExtent));
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| 368 | }
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| 369 |
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| 370 | function mouseupped(event) {
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| 371 | v.on("mousemove.zoom mouseup.zoom", null);
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| 372 | d3Drag.dragEnable(event.view, g.moved);
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| 373 | noevent(event);
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| 374 | g.event(event).end();
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| 375 | }
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| 376 | }
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| 377 |
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| 378 | function dblclicked(event, ...args) {
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| 379 | if (!filter.apply(this, arguments)) return;
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| 380 | var t0 = this.__zoom,
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| 381 | p0 = d3Selection.pointer(event.changedTouches ? event.changedTouches[0] : event, this),
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| 382 | p1 = t0.invert(p0),
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| 383 | k1 = t0.k * (event.shiftKey ? 0.5 : 2),
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| 384 | t1 = constrain(translate(scale(t0, k1), p0, p1), extent.apply(this, args), translateExtent);
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| 385 |
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| 386 | noevent(event);
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| 387 | if (duration > 0) d3Selection.select(this).transition().duration(duration).call(schedule, t1, p0, event);
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| 388 | else d3Selection.select(this).call(zoom.transform, t1, p0, event);
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| 389 | }
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| 390 |
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| 391 | function touchstarted(event, ...args) {
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| 392 | if (!filter.apply(this, arguments)) return;
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| 393 | var touches = event.touches,
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| 394 | n = touches.length,
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| 395 | g = gesture(this, args, event.changedTouches.length === n).event(event),
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| 396 | started, i, t, p;
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| 397 |
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| 398 | nopropagation(event);
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| 399 | for (i = 0; i < n; ++i) {
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| 400 | t = touches[i], p = d3Selection.pointer(t, this);
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| 401 | p = [p, this.__zoom.invert(p), t.identifier];
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| 402 | if (!g.touch0) g.touch0 = p, started = true, g.taps = 1 + !!touchstarting;
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| 403 | else if (!g.touch1 && g.touch0[2] !== p[2]) g.touch1 = p, g.taps = 0;
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| 404 | }
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| 405 |
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| 406 | if (touchstarting) touchstarting = clearTimeout(touchstarting);
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| 407 |
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| 408 | if (started) {
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| 409 | if (g.taps < 2) touchfirst = p[0], touchstarting = setTimeout(function() { touchstarting = null; }, touchDelay);
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| 410 | d3Transition.interrupt(this);
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| 411 | g.start();
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| 412 | }
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| 413 | }
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| 414 |
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| 415 | function touchmoved(event, ...args) {
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| 416 | if (!this.__zooming) return;
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| 417 | var g = gesture(this, args).event(event),
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| 418 | touches = event.changedTouches,
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| 419 | n = touches.length, i, t, p, l;
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| 420 |
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| 421 | noevent(event);
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| 422 | for (i = 0; i < n; ++i) {
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| 423 | t = touches[i], p = d3Selection.pointer(t, this);
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| 424 | if (g.touch0 && g.touch0[2] === t.identifier) g.touch0[0] = p;
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| 425 | else if (g.touch1 && g.touch1[2] === t.identifier) g.touch1[0] = p;
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| 426 | }
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| 427 | t = g.that.__zoom;
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| 428 | if (g.touch1) {
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| 429 | var p0 = g.touch0[0], l0 = g.touch0[1],
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| 430 | p1 = g.touch1[0], l1 = g.touch1[1],
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| 431 | dp = (dp = p1[0] - p0[0]) * dp + (dp = p1[1] - p0[1]) * dp,
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| 432 | dl = (dl = l1[0] - l0[0]) * dl + (dl = l1[1] - l0[1]) * dl;
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|---|
| 433 | t = scale(t, Math.sqrt(dp / dl));
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| 434 | p = [(p0[0] + p1[0]) / 2, (p0[1] + p1[1]) / 2];
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| 435 | l = [(l0[0] + l1[0]) / 2, (l0[1] + l1[1]) / 2];
|
|---|
| 436 | }
|
|---|
| 437 | else if (g.touch0) p = g.touch0[0], l = g.touch0[1];
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|---|
| 438 | else return;
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| 439 |
|
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| 440 | g.zoom("touch", constrain(translate(t, p, l), g.extent, translateExtent));
|
|---|
| 441 | }
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|---|
| 442 |
|
|---|
| 443 | function touchended(event, ...args) {
|
|---|
| 444 | if (!this.__zooming) return;
|
|---|
| 445 | var g = gesture(this, args).event(event),
|
|---|
| 446 | touches = event.changedTouches,
|
|---|
| 447 | n = touches.length, i, t;
|
|---|
| 448 |
|
|---|
| 449 | nopropagation(event);
|
|---|
| 450 | if (touchending) clearTimeout(touchending);
|
|---|
| 451 | touchending = setTimeout(function() { touchending = null; }, touchDelay);
|
|---|
| 452 | for (i = 0; i < n; ++i) {
|
|---|
| 453 | t = touches[i];
|
|---|
| 454 | if (g.touch0 && g.touch0[2] === t.identifier) delete g.touch0;
|
|---|
| 455 | else if (g.touch1 && g.touch1[2] === t.identifier) delete g.touch1;
|
|---|
| 456 | }
|
|---|
| 457 | if (g.touch1 && !g.touch0) g.touch0 = g.touch1, delete g.touch1;
|
|---|
| 458 | if (g.touch0) g.touch0[1] = this.__zoom.invert(g.touch0[0]);
|
|---|
| 459 | else {
|
|---|
| 460 | g.end();
|
|---|
| 461 | // If this was a dbltap, reroute to the (optional) dblclick.zoom handler.
|
|---|
| 462 | if (g.taps === 2) {
|
|---|
| 463 | t = d3Selection.pointer(t, this);
|
|---|
| 464 | if (Math.hypot(touchfirst[0] - t[0], touchfirst[1] - t[1]) < tapDistance) {
|
|---|
| 465 | var p = d3Selection.select(this).on("dblclick.zoom");
|
|---|
| 466 | if (p) p.apply(this, arguments);
|
|---|
| 467 | }
|
|---|
| 468 | }
|
|---|
| 469 | }
|
|---|
| 470 | }
|
|---|
| 471 |
|
|---|
| 472 | zoom.wheelDelta = function(_) {
|
|---|
| 473 | return arguments.length ? (wheelDelta = typeof _ === "function" ? _ : constant(+_), zoom) : wheelDelta;
|
|---|
| 474 | };
|
|---|
| 475 |
|
|---|
| 476 | zoom.filter = function(_) {
|
|---|
| 477 | return arguments.length ? (filter = typeof _ === "function" ? _ : constant(!!_), zoom) : filter;
|
|---|
| 478 | };
|
|---|
| 479 |
|
|---|
| 480 | zoom.touchable = function(_) {
|
|---|
| 481 | return arguments.length ? (touchable = typeof _ === "function" ? _ : constant(!!_), zoom) : touchable;
|
|---|
| 482 | };
|
|---|
| 483 |
|
|---|
| 484 | zoom.extent = function(_) {
|
|---|
| 485 | return arguments.length ? (extent = typeof _ === "function" ? _ : constant([[+_[0][0], +_[0][1]], [+_[1][0], +_[1][1]]]), zoom) : extent;
|
|---|
| 486 | };
|
|---|
| 487 |
|
|---|
| 488 | zoom.scaleExtent = function(_) {
|
|---|
| 489 | return arguments.length ? (scaleExtent[0] = +_[0], scaleExtent[1] = +_[1], zoom) : [scaleExtent[0], scaleExtent[1]];
|
|---|
| 490 | };
|
|---|
| 491 |
|
|---|
| 492 | zoom.translateExtent = function(_) {
|
|---|
| 493 | return arguments.length ? (translateExtent[0][0] = +_[0][0], translateExtent[1][0] = +_[1][0], translateExtent[0][1] = +_[0][1], translateExtent[1][1] = +_[1][1], zoom) : [[translateExtent[0][0], translateExtent[0][1]], [translateExtent[1][0], translateExtent[1][1]]];
|
|---|
| 494 | };
|
|---|
| 495 |
|
|---|
| 496 | zoom.constrain = function(_) {
|
|---|
| 497 | return arguments.length ? (constrain = _, zoom) : constrain;
|
|---|
| 498 | };
|
|---|
| 499 |
|
|---|
| 500 | zoom.duration = function(_) {
|
|---|
| 501 | return arguments.length ? (duration = +_, zoom) : duration;
|
|---|
| 502 | };
|
|---|
| 503 |
|
|---|
| 504 | zoom.interpolate = function(_) {
|
|---|
| 505 | return arguments.length ? (interpolate = _, zoom) : interpolate;
|
|---|
| 506 | };
|
|---|
| 507 |
|
|---|
| 508 | zoom.on = function() {
|
|---|
| 509 | var value = listeners.on.apply(listeners, arguments);
|
|---|
| 510 | return value === listeners ? zoom : value;
|
|---|
| 511 | };
|
|---|
| 512 |
|
|---|
| 513 | zoom.clickDistance = function(_) {
|
|---|
| 514 | return arguments.length ? (clickDistance2 = (_ = +_) * _, zoom) : Math.sqrt(clickDistance2);
|
|---|
| 515 | };
|
|---|
| 516 |
|
|---|
| 517 | zoom.tapDistance = function(_) {
|
|---|
| 518 | return arguments.length ? (tapDistance = +_, zoom) : tapDistance;
|
|---|
| 519 | };
|
|---|
| 520 |
|
|---|
| 521 | return zoom;
|
|---|
| 522 | }
|
|---|
| 523 |
|
|---|
| 524 | exports.ZoomTransform = Transform;
|
|---|
| 525 | exports.zoom = zoom;
|
|---|
| 526 | exports.zoomIdentity = identity;
|
|---|
| 527 | exports.zoomTransform = transform;
|
|---|
| 528 |
|
|---|
| 529 | Object.defineProperty(exports, '__esModule', { value: true });
|
|---|
| 530 |
|
|---|
| 531 | })));
|
|---|
