Creating a dynamic Tank level/meter using html and css

Question

I am currently having problems creating a 'tank gauging system' within my project. I am using MVC and the by using the following markup, I have achieved this:

by using:

#container {
    position:absolute;
    margin:0;
    margin-top:-50px;    
    width:100%;
    padding:0;    
    -moz-perspective: 1000px; /*required to make cylinder shape*/
    -webkit-perspective: 1000px;
}
#frame {
    -moz-transform-style: preserve-3d;
    -webkit-transform-style: preserve-3d;
    margin-left:5%;
    -moz-transform: rotateX(0deg) rotateY(0deg) rotateZ(0deg) translate3d(40%, 60px, 175px);
    -webkit-transform: rotateX(0deg) rotateY(0deg) rotateZ(0deg) translate3d(40%, 60px, 175px); 

}
.strip {
    -moz-transform-style: preserve-3d;
    -webkit-transform-style: preserve-3d
}
.strip div {
    position: fixed;
    background-repeat:repeat;
    border-width: thin 10px;
    color:#ececec;
    vertical-align:central;
    height:130px; /*height and width of tank display*/
    width:12%;
    background-color:rgba(128,128,128,0.99);
    -webkit-border-bottom-right-radius: 2px;
-webkit-border-bottom-left-radius: 2px;
-moz-border-radius-bottomright: 2px;
-moz-border-radius-bottomleft: 2px;
border-bottom-right-radius: 2px;
border-bottom-left-radius: 2px;

-webkit-box-shadow: inset 0px -35px 20px -37px rgba(0,0,0,0.96);
-moz-box-shadow: inset 0px -35px 20px -37px rgba(0,0,0,0.96);
box-shadow: inset 0px -35px 20px -37px rgba(0,0,0,0.96);
}
.strip div:before {
    content:"";
    position: absolute;
    z-index: -1;
    /*Make this lower so any text appears in front*/

    top: 0;
    right: 0;
    bottom: 50%; /*used for tank level setting*/
    left: 0;
    background: rgba(56,56,56,0.8);



}
.strip .a {

  
     border-top:1px solid black;
    -moz-transform: rotateY(0deg) translateZ(124px);
    -webkit-transform: rotateY(0deg) translateZ(124px)
}
.strip .b {
     border-top:1px solid black;
    -moz-transform: rotateY(15deg) translateZ(124px);
    -webkit-transform: rotateY(15deg) translateZ(124px)
}
.strip .c {
     border-top:1px solid black;
    -moz-transform: rotateY(30deg) translateZ(124px);
    -webkit-transform: rotateY(30deg) translateZ(124px);
}

 .strip .c {
    background: rgb(0,0,0) !important; /* Old browsers */
background: -moz-linear-gradient(top,  rgba(0,0,0,1) 0%, rgba(128,128,128,1) 1%, rgba(128,128,128,1) 9%, rgba(0,0,0,1) 10%, rgba(128,128,128,1) 11%, rgba(128,128,128,1) 19%, rgba(0,0,0,1) 20%, rgba(128,128,128,1) 21%, rgba(128,128,128,1) 29%, rgba(0,0,0,1) 30%, rgba(128,128,128,1) 31%, rgba(128,128,128,1) 39%, rgba(0,0,0,1) 40%, rgba(128,128,128,1) 41%, rgba(128,128,128,1) 49%, rgba(0,0,0,1) 50%, rgba(128,128,128,1) 51%, rgba(128,128,128,1) 59%, rgba(0,0,0,1) 60%, rgba(0,0,0,1) 60%, rgba(128,128,128,1) 61%, rgba(128,128,128,1) 69%, rgba(0,0,0,1) 70%, rgba(128,128,128,1) 71%, rgba(128,128,128,1) 79%, rgba(0,0,0,1) 80%, rgba(128,128,128,1) 81%, rgba(128,128,128,1) 89%, rgba(0,0,0,1) 90%, rgba(128,128,128,1) 91%, rgba(128,128,128,1) 99%, rgba(0,0,0,1) 100%)!important; /* FF3.6+ */
background: -webkit-gradient(linear, left top, left bottom, color-stop(0%,rgba(0,0,0,1)), color-stop(1%,rgba(128,128,128,1)), color-stop(9%,rgba(128,128,128,1)), color-stop(10%,rgba(0,0,0,1)), color-stop(11%,rgba(128,128,128,1)), color-stop(19%,rgba(128,128,128,1)), color-stop(20%,rgba(0,0,0,1)), color-stop(21%,rgba(128,128,128,1)), color-stop(29%,rgba(128,128,128,1)), color-stop(30%,rgba(0,0,0,1)), color-stop(31%,rgba(128,128,128,1)), color-stop(39%,rgba(128,128,128,1)), color-stop(40%,rgba(0,0,0,1)), color-stop(41%,rgba(128,128,128,1)), color-stop(49%,rgba(128,128,128,1)), color-stop(50%,rgba(0,0,0,1)), color-stop(51%,rgba(128,128,128,1)), color-stop(59%,rgba(128,128,128,1)), color-stop(60%,rgba(0,0,0,1)), color-stop(60%,rgba(0,0,0,1)), color-stop(61%,rgba(128,128,128,1)), color-stop(69%,rgba(128,128,128,1)), color-stop(70%,rgba(0,0,0,1)), color-stop(71%,rgba(128,128,128,1)), color-stop(79%,rgba(128,128,128,1)), color-stop(80%,rgba(0,0,0,1)), color-stop(81%,rgba(128,128,128,1)), color-stop(89%,rgba(128,128,128,1)), color-stop(90%,rgba(0,0,0,1)), color-stop(91%,rgba(128,128,128,1)), color-stop(99%,rgba(128,128,128,1)), color-stop(100%,rgba(0,0,0,1)))!important; /* Chrome,Safari4+ */
background: -webkit-linear-gradient(top,  rgba(0,0,0,1) 0%,rgba(128,128,128,1) 1%,rgba(128,128,128,1) 9%,rgba(0,0,0,1) 10%,rgba(128,128,128,1) 11%,rgba(128,128,128,1) 19%,rgba(0,0,0,1) 20%,rgba(128,128,128,1) 21%,rgba(128,128,128,1) 29%,rgba(0,0,0,1) 30%,rgba(128,128,128,1) 31%,rgba(128,128,128,1) 39%,rgba(0,0,0,1) 40%,rgba(128,128,128,1) 41%,rgba(128,128,128,1) 49%,rgba(0,0,0,1) 50%,rgba(128,128,128,1) 51%,rgba(128,128,128,1) 59%,rgba(0,0,0,1) 60%,rgba(0,0,0,1) 60%,rgba(128,128,128,1) 61%,rgba(128,128,128,1) 69%,rgba(0,0,0,1) 70%,rgba(128,128,128,1) 71%,rgba(128,128,128,1) 79%,rgba(0,0,0,1) 80%,rgba(128,128,128,1) 81%,rgba(128,128,128,1) 89%,rgba(0,0,0,1) 90%,rgba(128,128,128,1) 91%,rgba(128,128,128,1) 99%,rgba(0,0,0,1) 100%)!important; /* Chrome10+,Safari5.1+ */
background: -o-linear-gradient(top,  rgba(0,0,0,1) 0%,rgba(128,128,128,1) 1%,rgba(128,128,128,1) 9%,rgba(0,0,0,1) 10%,rgba(128,128,128,1) 11%,rgba(128,128,128,1) 19%,rgba(0,0,0,1) 20%,rgba(128,128,128,1) 21%,rgba(128,128,128,1) 29%,rgba(0,0,0,1) 30%,rgba(128,128,128,1) 31%,rgba(128,128,128,1) 39%,rgba(0,0,0,1) 40%,rgba(128,128,128,1) 41%,rgba(128,128,128,1) 49%,rgba(0,0,0,1) 50%,rgba(128,128,128,1) 51%,rgba(128,128,128,1) 59%,rgba(0,0,0,1) 60%,rgba(0,0,0,1) 60%,rgba(128,128,128,1) 61%,rgba(128,128,128,1) 69%,rgba(0,0,0,1) 70%,rgba(128,128,128,1) 71%,rgba(128,128,128,1) 79%,rgba(0,0,0,1) 80%,rgba(128,128,128,1) 81%,rgba(128,128,128,1) 89%,rgba(0,0,0,1) 90%,rgba(128,128,128,1) 91%,rgba(128,128,128,1) 99%,rgba(0,0,0,1) 100%)!important; /* Opera 11.10+ */
background: -ms-linear-gradient(top,  rgba(0,0,0,1) 0%,rgba(128,128,128,1) 1%,rgba(128,128,128,1) 9%,rgba(0,0,0,1) 10%,rgba(128,128,128,1) 11%,rgba(128,128,128,1) 19%,rgba(0,0,0,1) 20%,rgba(128,128,128,1) 21%,rgba(128,128,128,1) 29%,rgba(0,0,0,1) 30%,rgba(128,128,128,1) 31%,rgba(128,128,128,1) 39%,rgba(0,0,0,1) 40%,rgba(128,128,128,1) 41%,rgba(128,128,128,1) 49%,rgba(0,0,0,1) 50%,rgba(128,128,128,1) 51%,rgba(128,128,128,1) 59%,rgba(0,0,0,1) 60%,rgba(0,0,0,1) 60%,rgba(128,128,128,1) 61%,rgba(128,128,128,1) 69%,rgba(0,0,0,1) 70%,rgba(128,128,128,1) 71%,rgba(128,128,128,1) 79%,rgba(0,0,0,1) 80%,rgba(128,128,128,1) 81%,rgba(128,128,128,1) 89%,rgba(0,0,0,1) 90%,rgba(128,128,128,1) 91%,rgba(128,128,128,1) 99%,rgba(0,0,0,1) 100%)!important; /* IE10+ */
background: linear-gradient(to bottom,  rgba(0,0,0,1) 0%,rgba(128,128,128,1) 1%,rgba(128,128,128,1) 9%,rgba(0,0,0,1) 10%,rgba(128,128,128,1) 11%,rgba(128,128,128,1) 19%,rgba(0,0,0,1) 20%,rgba(128,128,128,1) 21%,rgba(128,128,128,1) 29%,rgba(0,0,0,1) 30%,rgba(128,128,128,1) 31%,rgba(128,128,128,1) 39%,rgba(0,0,0,1) 40%,rgba(128,128,128,1) 41%,rgba(128,128,128,1) 49%,rgba(0,0,0,1) 50%,rgba(128,128,128,1) 51%,rgba(128,128,128,1) 59%,rgba(0,0,0,1) 60%,rgba(0,0,0,1) 60%,rgba(128,128,128,1) 61%,rgba(128,128,128,1) 69%,rgba(0,0,0,1) 70%,rgba(128,128,128,1) 71%,rgba(128,128,128,1) 79%,rgba(0,0,0,1) 80%,rgba(128,128,128,1) 81%,rgba(128,128,128,1) 89%,rgba(0,0,0,1) 90%,rgba(128,128,128,1) 91%,rgba(128,128,128,1) 99%,rgba(0,0,0,1) 100%)!important; /* W3C */
filter: progid:DXImageTransform.Microsoft.gradient( startColorstr='#000000', endColorstr='#000000',GradientType=0 ); /* IE6-9 */

}

.strip .d {
    border-top:1px solid black;
    -moz-transform: rotateY(45deg) translateZ(124px);
    -webkit-transform: rotateY(45deg) translateZ(124px)
}
.strip .e {
    border-top:1px solid black;
    -moz-transform: rotateY(60deg) translateZ(124px);
    -webkit-transform: rotateY(60deg) translateZ(124px)
}
.strip .f {
    border-top:1px solid black;
  
    -moz-transform: rotateY(75deg) translateZ(124px);
    -webkit-transform: rotateY(75deg) translateZ(124px)
}
.strip .g {
    border-top:1px solid black;
    -moz-transform: rotateY(90deg) translateZ(124px);
    -webkit-transform: rotateY(90deg) translateZ(124px)
}
.strip .h {
    border-top:1px solid black;
    -moz-transform: rotateY(105deg) translateZ(124px);
    -webkit-transform: rotateY(105deg) translateZ(124px)
}
.strip .i {
    border-top:1px solid black;
    -moz-transform: rotateY(120deg) translateZ(124px);
    -webkit-transform: rotateY(120deg) translateZ(124px)
}
.strip .j {
    border-top:1px solid black;
    -moz-transform: rotateY(135deg) translateZ(124px);
    -webkit-transform: rotateY(135deg) translateZ(124px)
}
.strip .k {
    border-top:1px solid black;
    -moz-transform: rotateY(150deg) translateZ(124px);
    -webkit-transform: rotateY(150deg) translateZ(124px)
}
.strip .l {
    border-top:1px solid black;
    -moz-transform: rotateY(165deg) translateZ(124px);
    -webkit-transform: rotateY(165deg) translateZ(124px)
}
.strip .m {
    border-top:1px solid black;
    -moz-transform: rotateY(180deg) translateZ(124px);
    -webkit-transform: rotateY(180deg) translateZ(124px)
}
.strip .n {
    border-top:1px solid black;
    -moz-transform: rotateY(195deg) translateZ(124px);
    -webkit-transform: rotateY(195deg) translateZ(124px)
}
.strip .o {
    border-top:1px solid black;
    -moz-transform: rotateY(210deg) translateZ(124px);
    -webkit-transform: rotateY(210deg) translateZ(124px)
}
.strip .p {
    border-top:1px solid black;
    -moz-transform: rotateY(225deg) translateZ(124px);
    -webkit-transform: rotateY(225deg) translateZ(124px)
}
.strip .q {
    border-top:1px solid black;
    -moz-transform: rotateY(240deg) translateZ(124px);
    -webkit-transform: rotateY(240deg) translateZ(124px)
}
.strip .r {
    border-top:1px solid black;
    -moz-transform: rotateY(255deg) translateZ(124px);
    -webkit-transform: rotateY(255deg) translateZ(124px)
}
.strip .s {
    border-top:1px solid black;
    -moz-transform: rotateY(270deg) translateZ(124px);
    -webkit-transform: rotateY(270deg) translateZ(124px)
}
.strip .t {
    border-top:1px solid black;
    -moz-transform: rotateY(285deg) translateZ(124px);
    -webkit-transform: rotateY(285deg) translateZ(124px)
}
.strip .u {
    border-top:1px solid black;
    -moz-transform: rotateY(300deg) translateZ(124px);
    -webkit-transform: rotateY(300deg) translateZ(124px)
}
.strip .v {
    border-top:1px solid black;
    -moz-transform: rotateY(315deg) translateZ(124px);
    -webkit-transform: rotateY(315deg) translateZ(124px)
}
.strip .w {
    border-top:1px solid black;
    -moz-transform: rotateY(330deg) translateZ(124px);
    -webkit-transform: rotateY(330deg) translateZ(124px)
}
.strip .x {
    border-top:1px solid black;
    -moz-transform: rotateY(345deg) translateZ(124px);
    -webkit-transform: rotateY(345deg) translateZ(124px);

}

<div class="tankWidget">
        <div class="banner">Tank 1: Kero</div>
       
        <div id="container">
            <div id="frame">
                <div class="strip">
                    <div id="tank1FrameA"class="a">50%</div>
                    <div class="b"></div>
                    <div class="c"></div>
                    <div class="d"></div>
                    <div class="e"></div>
                    <div class="f"></div>
                    <div class="g"></div>
                    <div class="h"></div>
                    <div class="i"></div>
                    <div class="j"></div>
                    <div class="k"></div>
                    <div class="l"></div>
                    <div class="m"></div>
                    <div class="n"></div>
                    <div class="o"></div>
                    <div class="p"></div>
                    <div class="q"></div>
                    <div class="r"></div>
                    <div class="s"></div>
                    <div class="t"></div>
                    <div class="u"></div>
                    <div class="v"></div>
                    <div class="w"></div>
                    <div class="x"></div>
                </div>
            </div>
        </div>
        
   
       

        <div class="widget-footer">
            <table id="specTab1">
                <tr><th>Volume</th><th>Capacity</th><th>Ullage (AL)</th></tr>
                <tr id="tank1"><td id="tank1Vol">50L</td><td>100L</td><td>1.24</td></tr>
            </table>
            <br />
            <div class="lowerWidget-footer">
                <br />
                Details
            </div>
        </div>
    </div>

However, I am looking to now make it dynamic. (i.e. the light grey level changes depending on the value within the '.a' strip (in this case 50%).

I was using:

        var test = $('#tank1FrameA').text(); //gets value of first tank
        test = parseInt(test);

to get the 50 extracted.

However, since I am unable to target the :beforepseudo element to edit the 'height/level', how else could I achieve this leveling/dynamic ability?

In general;

+-------------+
|    50%      | <-- value to use
|             |
+-------------+ <-- this level should change
|             |
|             |
+-------------+

for 25%:

+-------------+
|    25%      | <-- value to use
|             |
|             |
+-------------+ <-- this level should change
|             |
+-------------+

etc etc.

Any suggestions as to how thic can be done with this cylinder shape?

Here is a runnable/editable jsfiddle.

---

When originally creating

the Tank, I was looking to edit the:

.strip div:before {

's bottom attribute in order to achieve this.

However, i have recently discovered that pseudo elements aren't part of the DOM, and so are inaccessible to JQuery (powerful as it may be).

Answer 1

If you just need to fill the tank, you may use a much simpler stucture to build the tank with two HTML elements, border-radius and a pseudo element.

Then you can use JS to change the height of the green area according to the value entered in the custom data attribute data-amount of the .tk div :

DEMO (change the value of the custom data attribute data-amount in the .tk div to change the height of the liquid).

var amount = $('.tk').attr('data-amount'),
    height = amount * 80/100 + 20;

$('.lq').css({height : height + '%'});

.tk{ /*Liquid Section*/
    position:relative;
    width:40%; 
    height:130px;
    padding-top:50px;
    margin: 0 auto;
    background:rgba(56,56,56,0.8);
    border-radius: 100%/40px;
    border-bottom:3px solid #000;
    text-align:center;
    z-index:1;
    overflow:hidden;

}
.tk:after, .lq{
    content:'';
    position:absolute;
    top:0; left:0;
    width:100%;
    height:20%;
    z-index:-1;
}
.lq{
    background:rgba(128,128,128,0.99);
    height:80%;
    top:-2px;
    border-radius:100%/40px;
    border-bottom:3px solid #000;
}
.tk:after{
    height:20%;
    border:1px solid #000;
    border-radius:100%; /*makes circle at top*/
}

<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
<div class="tk" data-amount="40">
    40%
    <div class="lq"></div>
</div>