Created
April 9, 2015 15:11
-
-
Save pdxjohnny/ad4c55a39bb2056b28eb to your computer and use it in GitHub Desktop.
Grabs an image over and over to create a video, pass it the id of the Image element you want made into a video
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
var image_video = function image_video ( id ) | |
{ | |
this.image_element = document.getElementById( id ); | |
this.page = this.image_element.src; | |
this.running = false; | |
return this; | |
} | |
image_video.prototype.get_image = function get_image ( page, callback ) | |
{ | |
var xmlHTTP = new XMLHttpRequest(); | |
xmlHTTP.open('GET',page,true); | |
xmlHTTP.responseType = 'arraybuffer'; | |
xmlHTTP.onload = function(e) | |
{ | |
var binary = ''; | |
var bytes = new Uint8Array( this.response ); | |
var len = bytes.byteLength; | |
for (var i = 0; i < len; i++) { | |
binary += String.fromCharCode( bytes[ i ] ); | |
} | |
var b64 = window.btoa( binary ); | |
var dataURL = "data:image/jpeg;base64," + b64; | |
callback( page, dataURL ); | |
}; | |
xmlHTTP.send(); | |
} | |
image_video.prototype.reload_image = function reload_image ( image_element, page, callback ) | |
{ | |
this.get_image( page, function( page, data ) { | |
image_element.src = data; | |
if ( typeof callback === "function" ) | |
{ | |
callback(); | |
} | |
}); | |
} | |
image_video.prototype.start = function () | |
{ | |
this.running = true; | |
window.requestAnimationFrame( this.main.bind( this ) ); | |
} | |
image_video.prototype.stop = function () | |
{ | |
this.running = false; | |
} | |
image_video.prototype.main = function () | |
{ | |
var callback = function () | |
{ | |
window.requestAnimationFrame( this.main.bind( this ) ); | |
} | |
if ( this.running ) | |
{ | |
this.reload_image( this.image_element, this.page, callback.bind( this ) ); | |
} | |
} |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment