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added link to blogpost to blog headline, also some cleaning, we cant have more than 4 navigation points

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This commit is contained in:
Timm Szigat
2015-10-17 21:24:11 +02:00
parent 090df14b9a
commit cef7b0df10
4 changed files with 110 additions and 58 deletions
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131
js/elevator.js
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@@ -9,7 +9,7 @@
* Elevator.js
*********************************************/
var Elevator = (function() {
var Elevator = function(options) {
'use strict';
@@ -22,33 +22,44 @@ var Elevator = (function() {
var customDuration = false;
var startTime = null;
var startPosition = null;
var endPosition = 0;
var elevating = false;
var mainAudio;
var endAudio;
var elevating = false;
var that = this;
/**
* Utils
*/
// Soft object augmentation
function extend( target, source ) {
for ( var key in source ) {
if ( !( key in target ) ) {
target[ key ] = source[ key ];
}
}
return target;
};
// Thanks Mr Penner - http://robertpenner.com/easing/
function easeInOutQuad( t, b, c, d ) {
t /= d/2;
if (t < 1) return c/2*t*t + b;
t /= d / 2;
if ( t < 1 ) return c / 2 * t * t + b;
t--;
return -c/2 * (t*(t-2) - 1) + b;
};
return -c / 2 * ( t * ( t -2 ) - 1 ) + b;
}
function extendParameters(options, defaults){
for( var option in defaults ){
var t = options[option] === undefined && typeof option !== "function";
if(t){
options[option] = defaults[option];
}
}
return options;
}
function getVerticalOffset(element) {
var verticalOffset = 0;
while( element ){
verticalOffset += element.offsetTop || 0;
element = element.offsetParent;
}
return verticalOffset;
}
/**
* Main
@@ -56,13 +67,13 @@ var Elevator = (function() {
// Time is passed through requestAnimationFrame, what a world!
function animateLoop( time ) {
if (!startTime) {
if ( !startTime ) {
startTime = time;
}
var timeSoFar = time - startTime;
var easedPosition = easeInOutQuad(timeSoFar, startPosition, -startPosition, duration);
var easedPosition = easeInOutQuad(timeSoFar, startPosition, endPosition - startPosition, duration);
window.scrollTo(0, easedPosition);
if( timeSoFar < duration ) {
@@ -70,7 +81,7 @@ var Elevator = (function() {
} else {
animationFinished();
}
};
}
// ELEVATE!
// /
@@ -85,7 +96,7 @@ var Elevator = (function() {
// C O O O D
// C__O__O__O__D
// [_____________]
function elevate() {
this.elevate = function() {
if( elevating ) {
return;
@@ -93,7 +104,7 @@ var Elevator = (function() {
elevating = true;
startPosition = (document.documentElement.scrollTop || body.scrollTop);
// No custom duration set, so we travel at pixels per millisecond. (0.75px per ms)
if( !customDuration ) {
duration = (startPosition * 1.5);
@@ -105,6 +116,10 @@ var Elevator = (function() {
if( mainAudio ) {
mainAudio.play();
}
};
function browserMeetsRequirements() {
return window.requestAnimationFrame && window.Audio && window.addEventListener;
}
function resetPositions() {
@@ -114,7 +129,7 @@ var Elevator = (function() {
}
function animationFinished() {
resetPositions();
// Stop music!
@@ -141,44 +156,68 @@ var Elevator = (function() {
mainAudio.currentTime = 0;
}
window.scrollTo(0, 0);
window.scrollTo(0, endPosition);
}
}
//@TODO: Does this need tap bindings too?
function bindElevateToElement( element ) {
element.addEventListener('click', elevate, false);
if( element.addEventListener ) {
element.addEventListener('click', that.elevate, false);
} else {
// Older browsers
element.attachEvent('onclick', function() {
document.documentElement.scrollTop = endPosition;
document.body.scrollTop = endPosition;
window.scroll(0, endPosition);
});
}
}
function main( options ) {
function init( _options ) {
// Bind to element click event, if need be.
body = document.body;
if( options.element ) {
bindElevateToElement( options.element );
var defaults = {
duration: undefined,
mainAudio: false,
endAudio: false,
preloadAudio: true,
loopAudio: true,
};
_options = extendParameters(_options, defaults);
if( _options.element ) {
bindElevateToElement( _options.element );
}
if( options.duration ) {
// Take the stairs instead
if( !browserMeetsRequirements() ) {
return;
}
if( _options.duration ) {
customDuration = true;
duration = options.duration;
duration = _options.duration;
}
if( options.mainAudio ) {
mainAudio = new Audio( options.mainAudio );
mainAudio.setAttribute( 'preload', 'true' ); //@TODO: Option to not preload audio.
mainAudio.setAttribute( 'loop', 'true' );
}
if( options.endAudio ) {
endAudio = new Audio( options.endAudio );
endAudio.setAttribute( 'preload', 'true' );
if( _options.targetElement ) {
endPosition = getVerticalOffset(_options.targetElement);
}
window.addEventListener('blur', onWindowBlur, false);
if( _options.mainAudio ) {
mainAudio = new Audio( _options.mainAudio );
mainAudio.setAttribute( 'preload', _options.preloadAudio );
mainAudio.setAttribute( 'loop', _options.loopAudio );
}
if( _options.endAudio ) {
endAudio = new Audio( _options.endAudio );
endAudio.setAttribute( 'preload', 'true' );
}
}
return extend(main, {
elevate: elevate
});
})();
init(options);
};