Example on how d3 transitions can be used in AngularJS
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May 31, 2019 05:17
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d3 data transitions in AngularJS
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| angular.module('exampleApp', []) | |
| .controller('MainCtrl', function($scope, $interval) { | |
| $scope.circles = [ | |
| {x: 1, y:2, r: 4} | |
| ]; | |
| var width = 500, height = 200; | |
| function randCircle() { | |
| return { | |
| x: Math.random()*width, | |
| y: Math.random()*height, | |
| r: Math.random()*width/4, | |
| color: d3.hsl(Math.random()* 360, 0.5, 0.5).toString() | |
| }; | |
| } | |
| function getData() { | |
| console.log('fill data'); | |
| $scope.circles.length = 0; | |
| for (var i = 0; i < 10; i++) { | |
| $scope.circles.push(randCircle()); | |
| } | |
| } | |
| var timer; | |
| $scope.autoPlay = function () { | |
| if (timer) { | |
| $interval.cancel(timer); | |
| timer = null; | |
| } else { | |
| timer = $interval(getData, 3000); | |
| } | |
| }; | |
| $scope.transition = getData; | |
| $scope.autoPlay(); | |
| }) | |
| .directive('transAttr', function () { | |
| return { | |
| link: function (scope, element, attr) { | |
| var d3sel = d3.select(element[0]); | |
| scope.$watchCollection(attr.transAttr, function (newAttrs) { | |
| newAttrs = d3.entries(newAttrs); | |
| var trans = d3sel.transition().duration(1000); | |
| newAttrs.forEach(function (attr) { | |
| trans.attr(attr.key, attr.value); | |
| }); | |
| }); | |
| } | |
| }; | |
| }) | |
| ; |
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| <!DOCTYPE html> | |
| <html ng-app="exampleApp"> | |
| <head> | |
| <title>AngularJS Plunker</title> | |
| <script data-require="[email protected]" src="https://code.angularjs.org/1.2.13/angular.js" data-semver="1.2.13"></script> | |
| <script src="https://d3js.org/d3.v3.min.js" charset="utf-8"></script> | |
| <script src="app.js"></script> | |
| </head> | |
| <body ng-controller="MainCtrl"> | |
| <svg width="500" height="200"> | |
| <circle ng-repeat="circle in circles track by $index" | |
| trans-attr="{ | |
| cx: circle.x, | |
| cy: circle.y, | |
| r: circle.r, | |
| fill: circle.color | |
| }" /> | |
| </svg> | |
| <button type="button" ng-click="transition()">Transition Now!</button> | |
| </body> | |
| </html> |
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