Rotating an image when user scrolls up and down the screen - javascript

I am fairly new to writing in html, css, and coding in javascript.
I digress; i am trying to have an image of a gear rotate when the a user scrolls up and down the screen (i am hoping to give it an elevator effect when i add a belt).
I am using the jquery $(window).scroll(function(). I know it is working because when i use console.log("hi") it writes every time i scroll. My problem is the .animate() function that doesn't seem to work. I even tried downloading "http://jqueryrotate.com/" and using that to rotate.
Any help would be much appreciated!
## HTML ##
<div class="left_pulley">
<img src="gear2.png" />
</div>
<div class="right_pulley">
<img src="gear2.png" />
</div>
## CSS ##
.left_pulley
{
position: absolute;
margin: 0;
padding: 0;
top: 263px;
left: 87%;
height: 35px;
width: 35px;
}
.left_pulley img
{
width: 100%;
}
.right_pulley
{
position: absolute;
margin: 0;
padding: 0;
top: 263px;
left: 94.2%;
height: 35px;
width: 35px;
}
.right_pulley img
{
width: 100%;
}
## JS ##
First using .rotate({})
$(".left_pulley").rotate({bind:
$(window).scroll(function() {
if ($(this).scrollTop() > 0) {
$(.left_pulley).rotate({
angle: 0,
animateTo: 180,
})
})
})
})
Now using .animate({}) to try and just move it at all.
$(window).scroll(function() {
if ($(this).scrollTop() > 0) {
var scott = $('img');
scott.animate({
left: 180
}
}
});
$(window).scroll(function() {
if ($(this).scrollTop() > 0) {
var scott = $('img');
scott.animate({
left: 180
}
function() {
console.log("hi");
}
});
console.log("hi2");
}
});
.left_pulley {
position: absolute;
margin: 0;
padding: 0;
top: 263px;
left: 87%;
height: 35px;
width: 35px;
}
.left_pulley img {
width: 100%;
}
.right_pulley {
position: absolute;
margin: 0;
padding: 0;
top: 263px;
left: 94.2%;
height: 35px;
width: 35px;
}
.right_pulley img {
width: 100%;
}
<div class="left_pulley">
<img src="gear2.png" />
</div>
<div class="right_pulley">
<img src="gear2.png" />
</div>
[
picture of gears i want to rotate.
]1

You should look into the CSS3 transform property, more specifically the rotate() function. Here
It would also be beneficial to add a transistion property to create an animated 'tween' between rotation values. Here. Make sure to add this transition to the transition property (as this is where rotation is set).\
You can then change the rotation of the gear (with automatic animation!) using jquery by setting the css value of the transition property, for example:
#gear{
transition: transform 300ms;
transform: rotate(7deg);
transform-origin:90% 90%;
position:absolute;
left:100px;
top:100px;
font-size:10rem;
width:100px;
height:100px;
}
You can test it out here by hitting run.
https://jsfiddle.net/oc4hhons/

Borrowing heavily from https://stackoverflow.com/a/17348698/2026508
You could do something like this:
var degrees = 0;
var prevScroll = 0;
$(window).scroll(function() {
if ($(window).scrollTop() > 0) {
if (prevScroll > $(window).scrollTop()) {
$('.woo').css({
'-webkit-transform': 'rotate(' + degrees+++'deg)',
'-moz-transform': 'rotate(' + degrees+++'deg)',
'-ms-transform': 'rotate(' + degrees+++'deg)',
'transform': 'rotate(' + degrees+++'deg)'
});
console.log('prevScroll greater:', prevScroll)
} else if (prevScroll < $(window).scrollTop()) {
$('.woo').css({
'-webkit-transform': 'rotate(' + degrees--+'deg)',
'-moz-transform': 'rotate(' + degrees--+'deg)',
'-ms-transform': 'rotate(' + degrees--+'deg)',
'transform': 'rotate(' + degrees--+'deg)'
});
console.log('prevScroll less:', prevScroll)
}
prevScroll = $(window).scrollTop()
}
})
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div style="height: 40px; width: 100px;background-image: url(' gear2.png ');background-color:blue;" class="woo">turn</div>

JS Fiddle-Updated, now they rotate together same direction but the rotation is depending on whether the scroll is up or down:
JS:
var $gears = $('.gear'),
$i = 0,
$scrollBefore = 0;
$(window).scroll(function () {
if($(this).scrollTop() > $scrollBefore){
$scrollBefore = $(this).scrollTop();
$gears.css("transform", "rotate(" + ($i+=4) + "deg)");
}else if($(this).scrollTop() < $scrollBefore){
$scrollBefore = $(this).scrollTop();
$gears.css("transform", "rotate(" + ($i-=4) + "deg)");
}
});
this JS Fiddle 2, makes them rotate in opposite directions, and each gear direction switches depending if the scrolling is up or down:
JS:
var $gearLeft = $('.left_pulley'),
$gearRight = $('.right_pulley'),
$i = 0,
$j = 0,
$scrollBefore = 0;
$(window).scroll(function() {
if ($(this).scrollTop() > $scrollBefore) {
$scrollBefore = $(this).scrollTop();
$gearLeft.css("transform", "rotate(" + ($i += 4) + "deg)");
$gearRight.css("transform", "rotate(" + ($j -= 4) + "deg)");
} else if ($(this).scrollTop() < $scrollBefore) {
$scrollBefore = $(this).scrollTop();
$gearLeft.css("transform", "rotate(" + ($i -= 4) + "deg)");
$gearRight.css("transform", "rotate(" + ($j += 4) + "deg)");
}
});

Thanks for all the help everyone!
Just want to post my finial code in case anyone else needs help in the future.
/* Scott Louzon 11/24/15
This code is used to rotate two images of a gears when user scrolls */
/*This function see's when user scrolls then calls rotate_right & rotate_left
accordingly */
var scroll_at = 0; //variable to keep track of
//scroll postion
$(window).scroll(function() {
if ($(this).scrollTop() > 0) //if scroll postion is not at
{ //top do this
if ($(this).scrollTop() > scroll_at) //if scroll postion is > than b4
{
rotate_down();
}
else if ($(this).scrollTop() < scroll_at) //if scroll postion is < than b4
{
rotate_up();
}
scroll_at = $(this).scrollTop(); //set varible to were scroll
//postion is at now
}
})
//Both these functions call css to rotate the image of a gear
var rotation = 0;
function rotate_down()
{
rotation+= 8;
$(".left_pulley").css("transform","rotate("+ rotation +"deg)");
$(".right_pulley").css("transform","rotate("+ (-1 * rotation) +"deg)");
}
function rotate_up()
{
rotation += 8;
$(".left_pulley").css("transform","rotate("+ (-1 * rotation)+"deg)");
$(".right_pulley").css("transform","rotate("+ rotation +"deg)");
}
.left_pulley
{
position: absolute;
margin: 0;
padding: 0;
/*Used for gear rotation */
transition: transform 1ms;
transform-origin:50% 50%;
top: 263px;
left: 87%;
height: 35px;
width: 35px;
}
.left_pulley img
{
width: 100%;
}
.right_pulley
{
position: absolute;
margin: 0;
padding: 0;
/* Used for gear rotation */
transition: transform 1ms;
transform-origin:50% 50%;
top: 263px;
left: 94.2%;
height: 35px;
width: 35px;
}
.right_pulley img
{
width: 100%;
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div class="left_pulley">
<img src="gear2.png" />
</div>
<div class="right_pulley">
<img src="gear2.png" />
</div>

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Slider handle needs to restricted inside the container, should not go beyond the container

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Demo Link: https://jsfiddle.net/mohanravi/1pbzdyyd/30/
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You need to change
this
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to this
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since width of your bar is 90px I am subtracting 90.
See this updated fiddle

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var interval = setInterval(function () {
$('.mask').width(i + "%");
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}, 20);
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}
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}
});
The counter is basically to animate it once, because you will trigger this animation on every scroll.

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So I'm trying to make simple animation. When you press somewhere inside blue container, a circle should be created in this place and then go up. After some research I found how to put JS values into keyframes, but it's changing values for every object not just for freshly created. If you run snipped and press somewhere high and then somewhere low you will see what I'm talking about.
I found some AWESOME solution with Raphael library, but I'm a beginner and I'm trying to make something like this in JS. Is it even possible? How?
var bubble = {
posX: 0,
posY: 0,
size: 0
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var aquarium = document.getElementById("container");
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0% {
top: 400px;
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100% {
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#-webkit-keyframes moveUp{
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100% {
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Here is a possible solution. What I did:
Remove your functions changeAnimation () and findAnimation() - we don't need them
Update the keyframe to look like - only take care for the 100%
#keyframes moveUp { 100% {top: 80px;} }
Assign top of the new bubble with the clientY value
After 5 seconds set top of the bubble to the offset of the #container(80px) - exactly when animation is over to keep the position of the bubble, otherwise it will return to initial position
var bubble = {
posX: 0,
posY: 0,
size: 0
};
var aquarium = document.getElementById("container");
function createBubble(e) {
"use strict";
bubble.posX = e.clientX;
bubble.posY = e.clientY;
bubble.size = Math.round(Math.random() * 100);
var bubbleCircle = document.createElement("div");
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bubbleStyle.width = bubble.size + "px";
bubbleStyle.height = bubble.size + "px";
bubbleStyle.borderRadius = (bubble.size / 2) + "px";
bubbleStyle.top = bubble.posY - (bubble.size / 2) + "px";
bubbleStyle.left = bubble.posX - (bubble.size / 2) + "px";
bubbleCircle.className += " animate";
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// offset of #container which is 80px, otherwise circle will return to
// the position of which it was created
(function(style) {
setTimeout(function() {
style.top = '80px';
}, 5000);
})(bubbleStyle);
}
aquarium.addEventListener("click", createBubble);
body {
background-color: red;
margin: 0;
padding: 0;
}
#container {
width: 100%;
height: 100%;
position: fixed;
top: 80px;
left: 0;
background-color: rgb(20, 255, 200);
}
#surface {
width: 100%;
height: 40px;
position: fixed;
top: 40px;
opacity: 0.5;
background-color: rgb(250, 250, 250);
}
.bubble {
position: fixed;
border: 1px solid blue;
}
.animate {
animation: moveUp 5s linear;
/*cubic-bezier(1, 0, 1, 1);*/
-webkit-animation: moveUp 5s linear;
/*cubic-bezier(1, 0, 1, 1);*/
}
#keyframes moveUp {
100% {
top: 80px;
}
}
#-webkit-keyframes moveUp {
100% {
top: 80px;
}
}
<body>
<div id="container"></div>
<div id="surface"></div>
</body>
The problem about your code was that it is globally changing the #keyframes moveUp which is causing all the bubbles to move.
The problem with your code is that you're updating keyframes which are applied to all bubbles. I tried another way of doing it by using transition and changing the top position after the element was added to the DOM (otherwise it wouldn't be animated).
The main problem here is to wait the element to be added to the DOM. I tried using MutationObserver but it seems to be called before the element is actually added to the DOM (or at least rendered). So the only way I found is using a timeout which will simulate this waiting, although there must be a better one (because it may be called too early, causing the bubble to directly stick to the top), which I would be happy to hear about.
var bubble = {
posX: 0,
posY: 0,
size: 0
};
var aquarium = document.getElementById("container");
function createBubble(e) {
"use strict";
bubble.posX = e.clientX;
bubble.posY = e.clientY;
bubble.size = Math.round(Math.random() * 100);
var bubbleCircle = document.createElement("div");
aquarium.appendChild(bubbleCircle);
bubbleCircle.classList.add("bubble");
var bubbleStyle = bubbleCircle.style;
bubbleStyle.width = bubble.size + "px";
bubbleStyle.height = bubble.size + "px";
bubbleStyle.borderRadius = (bubble.size / 2) + "px";
bubbleStyle.top = bubble.posY - (bubble.size / 2) + "px";
bubbleStyle.left = bubble.posX - (bubble.size / 2) + "px";
setTimeout(function() {
bubbleCircle.classList.add("moveUp");
}, 50);
}
aquarium.addEventListener("click", createBubble);
body {
background-color: red;
margin: 0;
padding: 0;
}
#container {
width: 100%;
height: 100%;
position: fixed;
top: 80px;
left: 0;
background-color: rgb(20, 255, 200);
}
#surface {
width: 100%;
height: 40px;
position: fixed;
top: 40px;
opacity: 0.5;
background-color: rgb(250, 250, 250);
}
.bubble {
position: fixed;
border: 1px solid blue;
transition: 5s;
}
.moveUp {
top: 80px !important;
}
<body>
<div id="container">
</div>
<div id="surface">
</div>
</body>
Also, I used the classList object instead of className += ... because it is more reliable.

Swiping image slider swiping over too far

I attempted to add a swiping function to my slider to allow users to swipe through the images on their touchable devices. It hasn't turned out the best. When swiping at the images they do not slide over all of the way and then when I get to the end of the gallery (end of fourth image), the slider goes blank (goes white) and then it goes back to normal after a while.
I have added the important code to this question, as well as added a Fiddle to try it out.
The fiddle doesn't replicate the issue, so if you would like to see what this is doing, please go here to see it live. Scroll about halfway down and then you will see the slider.
The example I used had three images instead of four and I am thinking this may be my issue, but when I remove my 4th image (a repeat of the first image for a smoother transition back to the first), the issue is still present. I'm 99% sure the issue resides within the javascript, but I can't locate it.
Does anyone see what I am doing wrong or how to improve this?
Please note. I am putting the full code for this function, but I believe the issue resides within the move or end function here:
move: function(event) {
// Continuously return touch position.
this.touchmovex = event.originalEvent.touches[0].pageX;
// Calculate distance to translate figure.
this.movex = this.index*this.slideWidth + (this.touchstartx - this.touchmovex);
// Defines the speed the images should move at.
var panx = 100-this.movex/6; // was /6
if (this.movex < 600) { // Makes the figure stop moving when there is no more content.
this.el.figure.css('transform','translate3d(-' + this.movex + 'px,0,0)');
}
if (panx < 100) { // Corrects an edge-case problem where the background image moves without the container moving.
this.el.imgSlide.css('transform','translate3d(-' + panx + 'px,0,0)');
}
},
end: function(event) {
// Calculate the distance swiped.
var absMove = Math.abs(this.index*this.slideWidth - this.movex);
// Calculate the index. All other calculations are based on the index.
if (absMove > this.slideWidth/2 || this.longTouch === false) {
if (this.movex > this.index*this.slideWidth && this.index < 2) {
this.index++;
} else if (this.movex < this.index*this.slideWidth && this.index > 0) {
this.index--;
}
}
// Move and animate the elements.
this.el.figure.addClass('animate').css('transform', 'translate3d(-' + this.index*this.slideWidth + 'px,0,0)');
this.el.imgSlide.addClass('animate').css('transform', 'translate3d(-' + 100-this.index*50 + 'px,0,0)');
Full code:
if (navigator.msMaxTouchPoints) {
$('#slider').addClass('ms-touch');
$('#slider').on('scroll', function() {
$('.slide-image').css('transform','translate3d(-' + (100-$(this).scrollLeft()/6) + 'px,0,0)');
});
} else {
var slider = {
el: {
slider: $("#slider"),
figure: $(".figure"),
imgSlide: $(".slide-image")
},
slideWidth: $('#slider').width(),
touchstartx: undefined,
touchmovex: undefined,
movex: undefined,
index: 0,
longTouch: undefined,
init: function() {
this.bindUIEvents();
},
bindUIEvents: function() {
this.el.figure.on("touchstart", function(event) {
slider.start(event);
});
this.el.figure.on("touchmove", function(event) {
slider.move(event);
});
this.el.figure.on("touchend", function(event) {
slider.end(event);
});
},
start: function(event) {
// Test for flick.
this.longTouch = false;
setTimeout(function() {
window.slider.longTouch = true;
}, 250);
// Get the original touch position.
this.touchstartx = event.originalEvent.touches[0].pageX;
// The movement gets all janky if there's a transition on the elements.
$('.animate').removeClass('animate');
},
move: function(event) {
// Continuously return touch position.
this.touchmovex = event.originalEvent.touches[0].pageX;
// Calculate distance to translate figure.
this.movex = this.index*this.slideWidth + (this.touchstartx - this.touchmovex);
// Defines the speed the images should move at.
var panx = 100-this.movex/6; // was /6
if (this.movex < 600) { // Makes the figure stop moving when there is no more content.
this.el.figure.css('transform','translate3d(-' + this.movex + 'px,0,0)');
}
if (panx < 100) { // Corrects an edge-case problem where the background image moves without the container moving.
this.el.imgSlide.css('transform','translate3d(-' + panx + 'px,0,0)');
}
},
end: function(event) {
// Calculate the distance swiped.
var absMove = Math.abs(this.index*this.slideWidth - this.movex);
// Calculate the index. All other calculations are based on the index.
if (absMove > this.slideWidth/2 || this.longTouch === false) {
if (this.movex > this.index*this.slideWidth && this.index < 2) {
this.index++;
} else if (this.movex < this.index*this.slideWidth && this.index > 0) {
this.index--;
}
}
// Move and animate the elements.
this.el.figure.addClass('animate').css('transform', 'translate3d(-' + this.index*this.slideWidth + 'px,0,0)');
this.el.imgSlide.addClass('animate').css('transform', 'translate3d(-' + 100-this.index*50 + 'px,0,0)');
}
};
slider.init();
}
.animate {
transition: transform 0.3s ease-out;
}
#company-slider-section {
width: 100%;
height: auto;
position: relative;
}
div#slider {
width: 100%;
overflow: hidden;
position: relative;
}
div#slider .figure {
position: relative;
width: 400%;
margin: 0;
padding: 0;
font-size: 0;
text-align: left;
}
.ms-touch.slider {
overflow-x: scroll;
overflow-y: hidden;
-ms-overflow-style: none;
/* Hides the scrollbar. */
-ms-scroll-chaining: none;
/* Prevents Metro from swiping to the next tab or app. */
-ms-scroll-snap-type: mandatory;
/* Forces a snap scroll behavior on your images. */
-ms-scroll-snap-points-x: snapInterval(0%, 100%);
/* Defines the y and x intervals to snap to when scrolling. */
}
.figure2 {
animation: 20s company-slider infinite;
margin: 0;
}
#keyframes company-slider {
0% {
left: 0%;
}
30% {
left: 0%;
}
35% {
left: -100%;
}
55% {
left: -100%;
}
60% {
left: -200%;
}
90% {
left: -200%;
}
95% {
left: -300%;
}
100% {
left: -300%;
}
}
.slide-wrapper img {
width: 25%;
min-height: 100%;
float: left;
position: relative;
overflow: hidden;
}
.slide {
height: 100%;
position: relative;
}
.slide:before {
content: "";
position: absolute;
z-index: 1;
bottom: 0;
left: 0;
width: 100%;
height: 40%;
background: linear-gradient(transparent, black);
}
<div id="company-slider-section">
<div class="section-blocks left">
<div id="slider" class="slider">
<figure class="figure figure2">
<div class="slide-wrapper">
<div class="slide"><img src="/images/work/projects/eslich/es-test1.jpg" alt class="slide-image"></div>
</div>
<div class="slide-wrapper">
<div class="slide"><img src="/images/work/projects//desktop-service.jpg" alt class="slide-image"></div>
</div>
<div class="slide-wrapper">
<div class="slide"><img src="/images/work/projects//es-test2.jpg" alt class="slide-image"></div>
</div>
<div class="slide-wrapper">
<div class="slide"><img src="/images/work/projects//es-test1.jpg" alt class="slide-image"></div>
</div>
</figure>
</div>
</div>
</div>

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