javascript - Animate the drawing of a dashed svg line -


i'm trying animate arrow dashed line, ------->, horizontal , vertical path, using svg , css animations.

i've tried couple of different things, animating height , width, using bottom , top, each way has had doesn't quite or work well.

i managed path drawn svg, animation remove dashes , draw solid line.

no animation: http://jsfiddle.net/ehan4/2/

<svg version="1.1" id="layer_1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" x="0px" y="0px" width="252px" height="396px" viewbox="0 0 252 396" enable-background="new 0 0 252 396" xml:space="preserve"> <path stroke="#000" stroke-width="1.5" fill="none" d="m50.887,170.063v-53.488h55.814" stroke-dasharray="5,5" stroke-dashoffset="0.00" />

with animation: http://jsfiddle.net/ehan4/1/

<svg version="1.1" id="layer_1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" x="0px" y="0px" width="252px" height="396px" viewbox="0 0 252 396" enable-background="new 0 0 252 396" xml:space="preserve"> <path stroke="#000" stroke-width="1.5" fill="none" d="m50.887,170.063v-53.488h55.814" stroke-dasharray="5,5" stroke-dashoffset="0.00" /> 

var path = document.queryselector('path'); var length = path.gettotallength();  path.style.transition = path.style.webkittransition = 'none'; path.style.strokedasharray = length + ' ' + length; path.style.strokedashoffset = length; path.getboundingclientrect();  path.style.transition = path.style.webkittransition = 'stroke-dashoffset 2s ease-in-out'; path.style.strokedashoffset = '0';

any thoughts or ideas appreciated!

z

this function can animate drawing of dashed path:

function drawpath(path, options) {     options = options || {}     var duration = options.duration || 5000     var easing = options.easing || 'ease-in-out'     var reverse = options.reverse || false     var undraw = options.undraw || false     var callback = options.callback || function () {}      var length = path.gettotallength()     var dashoffsetstates = [length, 0]     if (reverse) {         dashoffsetstates = [length, 2 * length]     }     if (undraw) {         dashoffsetstates.reverse()     }      // clear previous transition     path.style.transition = path.style.webkittransition = 'none';      var dasharray = path.style.strokedasharray || path.getattribute("stroke-dasharray");      if (dasharray != '') {         // dashed path case         // repeats dash pattern many times needed cover path length         var dashlength = dasharray.split(/[\s,]/).map(function (a) {             return parsefloat(a) || 0         }).reduce(function (a, b) {             return + b         })         var dashcount = length / dashlength + 1         var = new array(math.ceil(dashcount)).join(dasharray + " ")         path.style.strokedasharray = + '0' + ' ' + length     } else {         // non dashed path case         path.style.strokedasharray = length + ' ' + length;     }     path.style.strokedashoffset = dashoffsetstates[0];     path.getboundingclientrect();     path.style.transition = path.style.webkittransition =         'stroke-dashoffset ' + duration + 'ms ' + easing;     path.style.strokedashoffset = dashoffsetstates[1]     settimeout(function() {         path.style.strokedasharray = dasharray //set original dash array         callback()     }, duration) }

it repeats dash pattern many times needed cover path length , adds empty dash length of path. animates dash offset, in example.

working demo: http://jsfiddle.net/u88bm18b/


Comments

Post a Comment

Popular posts from this blog

commonjs - How to write a typescript definition file for a node module that exports a function? -

consider, toml node module can use: // toml.d.ts declare module toml { export function parse(value:string):any; } declare module "toml" { export = toml; } then: /// <reference path="../../../../../defs/toml/toml.d.ts"/> import toml = require('toml'); toml.parse(...); however, node module export single function, such 'glob' ( https://github.com/isaacs/node-glob ). the node usage of module be: var glob = require("glob") glob("*.js", {}, callback(err, files) { ... }); you'd naively expect this: // glob.d.ts declare function globs(paths:string, options:any, callback:{(err:any, files:string[]):void; ...but because typescripts 'import' semantics bit strange, seems can use 'import .. = require()' statement alias modules . trying call: /// <reference path="../../../../../defs/glob/glob.d.ts"/> import blog = require('glob'); results in: error ts2072: mod...
Read more

openid - Okta: Failed to get authorization code through API call -

i'm integrating okta own idp server using okta's api. i'm implementing authorization code flow following steps below: in own server, use /api/v1/authn endpoint sessiontoken. use sessiontoken obtain authorization calling endpoint: /oauth2/v1/authorize?client_id=" + clientid + "&sessiontoken=" + sessiontoken + "&response_type=code&response_mode=query&scope=openid&redirect_uri=" + redirecturl + "&state=evanyang&nonce=" it's supposed return response status code 302 , location header containing redirect url code value. however, keep getting response status code 200 , without location header, html body saying "you using unsupported browser." , "javascript disabled on browser." according api documentation: http://developer.okta.com/docs/api/resources/oidc.html#authentication-request , sessiontoken parameter sufficient this: an okta one-time sessiontoken. allows api-based ...
Read more

ios - Change Storyboard View using Seague -

i have following code checks connection server, , depending on want change views if no connection found. nsstring *connect = [nsstring stringwithcontentsofurl:[nsurl urlwithstring:@"http://myserver.com"] encoding:nsutf8stringencoding error:nil]; if (connect == null) { [self performseguewithidentifier:@"network_failure" sender:self]; } else { // other code here } my problem not change views. have added storyboard segue between 2 views identifier of network_failure . not have navigation controller or that, problem? thanks help! no not problem. first of all, in objectivec exists nil object oriented null . must use that. so: if(connect == nil) or better: if(!connect) so due fact nil not same of null , probably code does't enter in if scope . you have been able discover breakpoint. anyway: be sure set trigger segue (line) 2 view controller , , name network_failure (that not best name. should instead view1toview2 ) as, m...
Read more