Fill SVG by dragging pointer - javascript

I want to fill color in number shown in image by dragging the green circle onto white path(it should fill with solid color from behind as dragged). I have used SVG and path also drawn in it. The draggable circle is also part of same SVG.
I am open if this can be done without SVG in any way.
Tried making it on canvas but gave that up because i could not drag there on given path.
My code below
var data = Snap.path.toCubic(document.getElementById("path2").getAttribute('d'))
dataLength = data.length,
svgPoints = [],
pointsString = data.toString();
for (var i = 0; i < dataLength; i++) {
var seg = data[i];
if (seg[0] === "M") {
var point = {};
point.x = seg[1];
point.y = seg[2];
svgPoints.push(point);
} else {
for (var j = 1; j < 6; j += 2) {
var point = {};
point.x = seg[j];
point.y = seg[j + 1];
svgPoints.push(point);
}
}
}
TweenMax.set('.knob', { x: svgPoints[0].x, y: svgPoints[0].y })
var circle = document.querySelector(".knob");
var path2 = document.querySelector("#path2");
var insidePath = false;
var lastPoint = {
x: 0,
y: 0
};
var draggable = new Draggable(circle, {
liveSnap: {
points: svgPoints
},
});
body {
background-color: #222;
background-color: rgb(145, 140, 140);
text-align: center;
overflow: hidden;
}
svg {
position: absolute;
left: 50%;
top: 50%;
transform: translate(-50%, -50%);
}
#DiacoDesignLink,
#pens {
color: #fff;
}
<div id="container">
<svg id="Layer_1" x="0px" y="0px" width="159.129px" height="220px" viewBox="0 0 159.129 220"
enable-background="new 0 0 159.129 220" xml:space="preserve">
<g>
<g>
<g>
<g>
<path id="path1" fill-opacity="0.1" fill="#492015" stroke="#492015" stroke-width="2" d="M53.336,203.653c-1.298,0-3.084-0.039-5.461-0.119c-2.436-0.092-4.921-0.256-7.395-0.49
c-2.684-0.266-5.221-0.662-7.548-1.18c-2.998-0.666-5.336-1.623-7.147-2.926l-0.36-0.279c-1.794-1.531-3.288-3.475-4.511-5.83
c-1.01-1.92-1.9-4.066-2.642-6.373c-0.721-2.264-1.263-4.492-1.613-6.627c-0.367-2.186-0.554-4.188-0.554-5.945
c0-2.816,0.369-5.453,1.099-7.838c0.847-2.793,2.447-5.379,4.756-7.684c1.762-1.918,3.827-4.025,5.917-6.033
c2.04-1.969,3.972-3.863,5.738-5.629c2.023-2.174,4.901-5.242,8.487-9.061c3.534-3.768,7.361-8.021,11.374-12.639
c4.066-4.686,8.16-9.631,12.166-14.693c4.017-5.078,7.734-10.098,11.048-14.923c3.221-4.68,5.838-9.098,7.779-13.133
c1.644-3.399,2.512-6.299,2.512-8.391c0-1.375-0.297-2.325-0.962-3.083c-0.221-0.251-0.635-0.722-2.141-0.722
c-1.746,0-3.323,0.636-4.961,2.002c-2.642,2.201-5.342,4.639-8.025,7.248c-2.993,2.908-6.243,5.651-9.661,8.153
c-4.309,3.15-9.24,4.747-14.658,4.747c-6.606,0-11.969-2.07-15.938-6.153c-3.917-4.03-5.903-9.309-5.903-15.689
c0-7.845,1.773-15.239,5.271-21.979c3.415-6.558,7.982-12.276,13.577-16.998c5.478-4.625,11.74-8.323,18.614-10.99
c6.923-2.688,14.141-4.051,21.452-4.051c7.213,0,14.054,0.86,20.332,2.555c6.559,1.773,12.347,4.586,17.204,8.36
c4.975,3.873,8.934,8.849,11.769,14.79c2.816,5.913,4.244,13.005,4.244,21.083c0,6.229-1.081,12.806-3.213,19.55
c-2.046,6.456-4.772,13.028-8.104,19.534c-3.281,6.397-7.097,12.851-11.34,19.187c-4.183,6.23-8.548,12.273-12.975,17.967
c-4.371,5.615-8.796,10.916-13.156,15.758c2.113-0.24,4.252-0.48,6.417-0.719c8.575-0.955,16.974-1.439,24.959-1.439
c5.866,0,11.098,1.627,15.549,4.834c3.51,2.535,7.691,7.381,7.691,16.078c0,6.324-2.168,11.586-6.443,15.639
c-3.863,3.66-8.569,6.025-13.99,7.029c-4.546,1.066-10.146,2.094-16.107,2.953c-5.981,0.865-12.153,1.623-18.343,2.25
c-6.219,0.625-12.399,1.102-18.374,1.422C63.655,203.493,58.127,203.653,53.336,203.653z" />
</g>
</g>
</g>
</g>
<path id="path2" fill="none" stroke="#FFFFFF" stroke-linecap="round" stroke-miterlimit="10" d="M40.059,71.082
c0,0,13.449-34.797,52.919-31.959c13.451,0.967,33.333,16,11.667,52.667c0,0-26.563,43.722-48,64.999
c-4.263,4.23-20.334,22.002,1,24.002c0,0,31.666,3,72.333-11.668" />
<circle class="knob" r="25" fill="#88CE02" stroke-width="4" stroke="#fff" />
</svg>
</div>
<script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/jquery/2.1.3/jquery.min.js"></script>
<script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/gsap/1.20.3/TweenMax.min.js"></script>
<script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/gsap/1.20.3/utils/Draggable.min.js"></script>
<script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/snap.svg/0.3.0/snap.svg-min.js"></script>
<script type="text/javascript" src="./sketch.js"></script>

Related

zoom in SVG with place clicked remaining in the same place

For quite a while I have been dealing with this scenario where I want to zoom in on an SVG image by clicking on it (or tapping in case of a touch-screen device), having it so that where you have clicked stays in the same position on the page while zooming in.
What happens at the moment is that when zooming is done, the pivot is not the clicked point but another point. It seems I cannot get to think of the correct formula to translate the svg as zooming in is done. Preferably I would see a solution that doesn't use an external library as the code below is a simplified version of a bigger project that has quite complicated stuff that would propably not be as easy to refactor to another component.
let zoomedIn = false;
let svgViewboxWidth, svgViewboxHeight;
let factor = 1;
function init() {
svgViewboxWidth = 335.2262416700105;
svgViewboxHeight = 304.65863467997406;
let svgContainer = document.getElementById('svgContainer');
svgContainer.addEventListener('click', svgClick);
}
function svgClick(event) {
let newCalcX = 28, newCalcY = -86;
let gZoom = document.getElementById('zoomscale');
if (zoomedIn) {
// zoom out
factor = 1;
newCalcX = 0;
newCalcY = 0;
zoomedIn = false;
} else {
// zoom in
factor = 3;
newCalcX = (event.clientX - 86) * -1;
newCalcY = (event.clientY + 28) * -1;
zoomedIn = true;
}
let transformValue = `translate(${newCalcX}, ${newCalcY}) scale(${factor})`;
gZoom.setAttribute('transform', transformValue);
}
body {
margin: 0px;
padding: 0px;
}
.container {
width: 100%;
height: 100%;
}
<?xml version='1.0' encoding='UTF-8'?>
<html>
<head>
<title>SVG zoom issue</title>
</head>
<body onload="init()">
<div id="svgContainer" class="container">
<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" id="view" height="100%" width="100%" viewBox="0 0 335.2262416700105 304.65863467997406" preserveAspectRatio="xMidYMid meet" version="1.1" class="view">
<style>svg { background-color:rgba(64, 64, 64, 0.1); }</style>
<g id="zoomscale">
<line x1="20" x2="310" y1="150" y2="150" style="stroke: #000000; stroke-width: 1px" />
<line x1="165" x2="165" y1="20" y2="280" style="stroke: #000000; stroke-width: 1px" />
<circle cx="165" cy="150" r="20" style="stroke: #000000; stroke-width: 1px; fill: none" />
<circle cx="165" cy="150" r="40" style="stroke: #000000; stroke-width: 1px; fill: none" />
<circle cx="165" cy="150" r="60" style="stroke: #000000; stroke-width: 1px; fill: none" />
<circle cx="165" cy="150" r="90" style="stroke: #000000; stroke-width: 1px; fill: none" />
<circle cx="165" cy="150" r="120" style="stroke: #000000; stroke-width: 1px; fill: none" />
</g>
</svg>
</div>
</body>
<html>
I feel like I am missing something obvious, or maybe I am just not able to calculate the correct translate- values for zooming. Massive thanks to the one(s) who can help me with this!

Divide semi circle with stroke-dasharray and on active color fill

I'm working on an SVG gauge meter here I want to divide the semi-circle into parts when the range slider move on active stroke fill with gradient color. And want to add one more black color running track when the meter needle moves. I had tried using stroke-dasharray but after adding this all colors are coming at a time meter is not working properly.
I want to divide the semi-circle into parts when the range slider move on active stroke fill with gradient color
And I want to add one more black color running track when the meter needle moves.
My code here
/* set radius for all circles */
var r = 400;
var circles = document.querySelectorAll('.circle');
var total_circles = circles.length;
for (var i = 0; i < total_circles; i++) {
circles[i].setAttribute('r', r);
}
/* set meter's wrapper dimension */
var meter_dimension = (r * 2) + 100;
var wrapper = document.querySelector('#wrapper');
wrapper.style.width = meter_dimension + 'px';
wrapper.style.height = meter_dimension + 'px';
/* add strokes to circles */
var cf = 2 * Math.PI * r;
var semi_cf = cf / 2;
var semi_cf_1by3 = semi_cf / 3;
var semi_cf_2by3 = semi_cf_1by3 * 2;
document.querySelector('#outline_curves').setAttribute('stroke-dasharray', semi_cf + ',' + cf);
document.querySelector('#high').setAttribute('stroke-dasharray', semi_cf + ',' + cf);
document.querySelector('#avg').setAttribute('stroke-dasharray', semi_cf_2by3 + ',' + cf);
document.querySelector('#low').setAttribute('stroke-dasharray', semi_cf_1by3 + ',' + cf);
document.querySelector('#outline_ends').setAttribute('stroke-dasharray', 2 + ',' + (semi_cf - 2));
document.querySelector('#mask').setAttribute('stroke-dasharray', semi_cf + ',' + cf);
/*bind range slider event*/
var slider = document.querySelector('#slider');
var lbl = document.querySelector("#lbl");
var mask = document.querySelector('#mask');
var meter_needle = document.querySelector('#meter_needle');
function range_change_event() {
var percent = slider.value
var meter_value = semi_cf - ((percent * semi_cf) / 100);
mask.setAttribute('stroke-dasharray', meter_value + ',' + cf);
meter_needle.style.transform = 'rotate(' + (450 - ((percent * 180) / 100)) + 'deg)';
lbl.textContent = percent + '%';
}
slider.addEventListener('input', range_change_event);
#wrapper {
position: relative;
margin: auto;
}
#meter {
width: 100%;
height: 100%;
transform: rotate(180deg);
}
.circle {
fill: none;
}
.outline,
#mask {
stroke: #F1F1F1;
stroke-width: 65;
}
.range {
stroke-width: 60;
}
#slider,
#lbl {
position: absolute;
}
#slider {
position: absolute;
transform: rotate(180deg);
cursor: pointer;
left: 0;
margin: auto;
right: 0;
top: 58%;
width: 94%;
}
#lbl {
background-color: #4B4C51;
border-radius: 2px;
color: white;
font-family: 'courier new';
font-size: 15pt;
font-weight: bold;
padding: 4px 4px 2px 4px;
right: -48px;
top: 57%;
}
#meter_needle {
height: 40%;
left: 0;
margin: auto;
position: absolute;
right: 0;
top: 10%;
transform-origin: bottom center;
/*orientation fix*/
transform: rotate(450deg);
width: 5px;
background-color: red;
}
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<body>
<div id="wrapper">
<svg id="meter">
<circle id="outline_curves" class="circle outline" cx="50%" cy="50%">
</circle>
<circle id="high" class="circle range" cx="50%" cy="50%" stroke="#FDE47F">
</circle>
<circle id="avg" class="circle range" cx="50%" cy="50%" stroke="#7CCCE5">
</circle>
<circle id="low" class="circle range" cx="50%" cy="50%" stroke="#E04644">
</circle>
<circle id="mask" class="circle" cx="50%" cy="50%" >
</circle>
<circle id="outline_ends" class="circle outline" cx="50%" cy="50%">
</circle>
</svg>
<svg version="1.1" id="meter_needle" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" x="0px" y="0px" width="16.721px" height="93.834px" viewBox="0 0 16.721 93.834" enable-background="new 0 0 16.721 93.834" xml:space="preserve">
<path fill="#464646" d="M13.886,84.243L2.83,83.875c0,0,3.648-70.77,3.956-74.981C7.104,4.562,7.832,0,8.528,0
c0.695,0,1.752,4.268,2.053,8.894C10.883,13.521,13.886,84.243,13.886,84.243z"/>
<path fill="#464646" d="M16.721,85.475c0,4.615-3.743,8.359-8.36,8.359S0,90.09,0,85.475c0-4.62,3.743-8.363,8.36-8.363
S16.721,80.855,16.721,85.475z"/>
<circle fill="#EEEEEE" cx="8.426" cy="85.471" r="2.691"/>
</svg>
<input id="slider" type="range" min="25" max="100" step="25" value="0" />
<label id="lbl" id="value" for="">0%</label>
</div>
<script src="script.js"></script>
</body>
Can anyone suggest to me how to achieve this output. Any help will be appreciate.
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script>
<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="65px" height="51.333px" viewBox="0 0 65 51.333" enable-background="new 0 0 65 51.333" xml:space="preserve">
<g>
<defs>
<rect id="SVGID_1_" x="-157.417" y="-176.417" width="648" height="864"/>
</defs>
<clipPath id="SVGID_2_">
<use xlink:href="#SVGID_1_" overflow="visible"/>
</clipPath>
<g clip-path="url(#SVGID_2_)">
<defs>
<rect id="SVGID_3_" x="-157.417" y="-176.417" width="648" height="864"/>
</defs>
<clipPath id="SVGID_4_">
<use xlink:href="#SVGID_3_" overflow="visible"/>
</clipPath>
</g>
<g clip-path="url(#SVGID_2_)">
<defs>
<rect id="SVGID_5_" x="-157.417" y="-176.417" width="648" height="864"/>
</defs>
<clipPath id="SVGID_6_">
<use xlink:href="#SVGID_5_" overflow="visible"/>
</clipPath>
</g>
<g clip-path="url(#SVGID_2_)">
<defs>
<rect id="SVGID_7_" x="-157.417" y="-176.417" width="648" height="864"/>
</defs>
<clipPath id="SVGID_8_">
<use xlink:href="#SVGID_7_" overflow="visible"/>
</clipPath>
<path clip-path="url(#SVGID_8_)" fill="#FFFFFF" d="M19.527,44.274c-1.653,5.015-7.059,7.738-12.071,6.085
c-5.015-1.654-7.739-7.058-6.087-12.071c1.652-5.015,7.058-7.739,12.072-6.084C18.456,33.855,21.179,39.26,19.527,44.274"/>
<path clip-path="url(#SVGID_8_)" fill="#58595B" d="M19.514,44.289c-1.652,5.013-7.056,7.736-12.066,6.083
c-5.014-1.653-7.736-7.056-6.084-12.067c1.652-5.013,7.055-7.736,12.068-6.083C18.443,33.875,21.166,39.277,19.514,44.289"/>
<path clip-path="url(#SVGID_8_)" fill="#FFFFFF" d="M17.318,43.564c-1.253,3.801-5.35,5.865-9.15,4.612
c-3.797-1.253-5.863-5.35-4.609-9.148c1.254-3.8,5.349-5.865,9.148-4.612C16.506,35.67,18.57,39.766,17.318,43.564"/>
<path clip-path="url(#SVGID_8_)" fill="#58595B" d="M19.266,34.944c2.242,3.113,2.33,7.115,0.57,10.255l45.249-43.24L9.721,31.148
C13.256,30.475,17.023,31.828,19.266,34.944"/>
<defs>
<filter id="Adobe_OpacityMaskFilter" filterUnits="userSpaceOnUse" x="6.52" y="-11.184" width="62.369" height="60.661">
<feFlood style="flood-color:white;flood-opacity:1" result="back"/>
<feBlend in="SourceGraphic" in2="back" mode="normal"/>
</filter>
</defs>
<mask maskUnits="userSpaceOnUse" x="6.52" y="-11.184" width="62.369" height="60.661" id="SVGID_9_">
<g filter="url(#Adobe_OpacityMaskFilter)">
<g enable-background="new ">
<g enable-background="new ">
<g>
<defs>
<path id="SVGID_10_" d="M17.516,29.352c2.243,0.335,3.028,2.134,3.028,2.134L57.891,6.807L17.516,29.352z"/>
</defs>
<clipPath id="SVGID_11_" clip-path="url(#SVGID_8_)">
<use xlink:href="#SVGID_10_" overflow="visible"/>
</clipPath>
<defs>
<filter id="Adobe_OpacityMaskFilter_1_" filterUnits="userSpaceOnUse" x="6.52" y="-11.184" width="62.369" height="60.661">
<feFlood style="flood-color:white;flood-opacity:1" result="back"/>
<feBlend in="SourceGraphic" in2="back" mode="normal"/>
</filter>
</defs>
<mask maskUnits="userSpaceOnUse" x="6.52" y="-11.184" width="62.369" height="60.661" id="SVGID_9_">
<g filter="url(#Adobe_OpacityMaskFilter_1_)">
<g enable-background="new ">
</g>
</g>
</mask>
<linearGradient id="SVGID_12_" gradientUnits="userSpaceOnUse" x1="-236.1787" y1="699.8169" x2="-235.1792" y2="699.8169" gradientTransform="matrix(36.5072 -22.3825 22.3825 36.5072 -7021.3823 -30804.627)">
<stop offset="0" style="stop-color:#FFFFFF"/>
<stop offset="0.0466" style="stop-color:#D5D7D8"/>
<stop offset="0.0983" style="stop-color:#B1B3B6"/>
<stop offset="0.1557" style="stop-color:#929497"/>
<stop offset="0.2174" style="stop-color:#797A7D"/>
<stop offset="0.2847" style="stop-color:#626366"/>
<stop offset="0.3595" style="stop-color:#4E4E50"/>
<stop offset="0.445" style="stop-color:#3B3B3C"/>
<stop offset="0.5476" style="stop-color:#202021"/>
<stop offset="0.6848" style="stop-color:#080809"/>
<stop offset="1" style="stop-color:#000000"/>
</linearGradient>
<polygon clip-path="url(#SVGID_11_)" mask="url(#SVGID_9_)" fill="url(#SVGID_12_)" points="28.547,49.477 68.889,24.744
46.861,-11.184 6.52,13.549 "/>
</g>
</g>
</g>
</g>
</mask>
<g opacity="0.8" clip-path="url(#SVGID_8_)">
<g>
<defs>
<rect id="SVGID_13_" x="6.52" y="-11.184" width="62.369" height="60.661"/>
</defs>
<clipPath id="SVGID_14_">
<use xlink:href="#SVGID_13_" overflow="visible"/>
</clipPath>
<g clip-path="url(#SVGID_14_)">
<defs>
<path id="SVGID_15_" d="M17.516,29.352c2.243,0.335,3.028,2.134,3.028,2.134L57.891,6.807L17.516,29.352z"/>
</defs>
<clipPath id="SVGID_16_">
<use xlink:href="#SVGID_15_" overflow="visible"/>
</clipPath>
<linearGradient id="SVGID_17_" gradientUnits="userSpaceOnUse" x1="-236.1787" y1="699.8169" x2="-235.1792" y2="699.8169" gradientTransform="matrix(36.5072 -22.3825 22.3825 36.5072 -7021.3823 -30804.627)">
<stop offset="0" style="stop-color:#FFFFFF"/>
<stop offset="0.1467" style="stop-color:#FFFFFF"/>
<stop offset="1" style="stop-color:#FFFFFF"/>
</linearGradient>
<polygon clip-path="url(#SVGID_16_)" fill="url(#SVGID_17_)" points="28.547,49.477 68.889,24.744 46.861,-11.184 6.52,13.549
"/>
</g>
</g>
</g>
<path clip-path="url(#SVGID_8_)" fill="#58595B" d="M12.709,42.044c-0.412,1.254-1.765,1.936-3.02,1.523
c-1.253-0.414-1.934-1.765-1.52-3.019c0.412-1.253,1.764-1.936,3.017-1.521C12.44,39.441,13.121,40.792,12.709,42.044"/>
</g>
</g>
</svg>

Here's a working SVG example, with a little bit of javascript.
It's not clear from your question what exactly you want the coloured divisions
to look like. For now I've just made them solid red. But you can make them look however you'd like by changing the fill of the <rect id="meter-colours" .../>.
let METER_DIVISIONS = 10;
let METER_DIVISIONS_GAP = 4;
// Initialise meter
let meterDivisionsElem = document.getElementById("meter-divisions");
// Calculate size of each meter division
let totalLen = meterDivisionsElem.getAttribute("r") * Math.PI;
let numGaps = METER_DIVISIONS - 1;
let divLen = (totalLen - METER_DIVISIONS_GAP * numGaps) / METER_DIVISIONS;
// Set meter divisions dash pattern
let pat = divLen + ' ' + METER_DIVISIONS_GAP + ' ';
meterDivisionsElem.setAttribute("stroke-dasharray", pat.repeat(numGaps) + ' ' + divLen + ' ' + totalLen);
// The slider form element
let sliderElem = document.getElementById("slider");
// The slider label element
let sliderLabelElem = document.getElementById("lbl");
// The needle element
let needleElem = document.getElementById("needle");
// The black bar element
let blackBarElem = document.getElementById("black-bar");
let blackBarLen = blackBarElem.getAttribute("r") * Math.PI;
// The meter colours element
let meterColoursElem = document.getElementById("meter-colours");
function setMeterTo(value)
{
// Update slider label
sliderLabelElem.textContent = value + '%';
// Update needle position
let rotation = value * 180 / 100;
needleElem.setAttribute("transform", "rotate(" + rotation + ")");
// Update black bar length
let barLen = value * blackBarLen / 100;
blackBarElem.setAttribute("stroke-dasharray", barLen + ' ' + (2 * blackBarLen));
// Update coloured division section of the meter
meterColoursElem.setAttribute("transform", "rotate(" + rotation + ")");
}
// Add an input change handler to the slider
sliderElem.addEventListener("input", function(evt) {
setMeterTo(evt.target.value);
});
// Initialise meter to start value
setMeterTo(25);
#wrapper {
width: 600px;
}
#slider {
width: 100%;
}
#needle {
stroke-linecap: round;
}
<div id="wrapper">
<svg id="meter" viewBox="0 0 200 110">
<defs>
<circle id="meter-divisions" r="90" stroke-width="20" stroke-dasharray="282.7"/>
<mask id="meter-divisions-mask">
<use xlink:href="#meter-divisions" stroke="white"/>
</mask>
</defs>
<g transform="translate(100,100) scale(1,-1)" fill="none">
<!-- The grey meter divisions -->
<use xlink:href="#meter-divisions" stroke="lightgrey"/>
<!-- The inner semicircular black bar -->
<circle id="black-bar" r="74" stroke="black" stroke-width="4" stroke-dasharray="232.5"/>
<!-- the needle -->
<line id="needle" x2="70" y2="0" stroke="black" stroke-width="2" stroke-dasharray="282.7"/>
<!-- The coloured form of the ,meter divisions that gets rotated into view with the needle.
It is initially off screen but gets revealed as it rotates. It is masked by using
a shape matching the gray divisions -->
<g mask="url(#meter-divisions-mask">
<rect id="meter-colours" x="-100" y="-100" width="200" height="100" fill="red"/>
</g>
</g>
</svg>
<input id="slider" type="range" min="25" max="100" step="25" value="25" />
<label id="lbl" id="value" for="">0%</label>
</div>
Update re new needle image
First let's simplify your needle image:
<svg width="650px" viewBox="0 0 65 51.333">
<g>
<path fill="#58595B" fill-rule="evenodd" d="M19.514,44.289c-1.652,5.013-7.056,7.736-12.066,6.083c-5.014-1.653-7.736-7.056-6.084-12.067c1.652-5.013,7.055-7.736,12.068-6.083C18.443,33.875,21.166,39.277,19.514,44.289 M17.318,43.564c-1.253,3.801-5.35,5.865-9.15,4.612c-3.797-1.253-5.863-5.35-4.609-9.148c1.254-3.8,5.349-5.865,9.148-4.612C16.506,35.67,18.57,39.766,17.318,43.564 M12.709,42.044c-0.412,1.254-1.765,1.936-3.02,1.523c-1.253-0.414-1.934-1.765-1.52-3.019c0.412-1.253,1.764-1.936,3.017-1.521C12.44,39.441,13.121,40.792,12.709,42.044"/>
<path fill="#58595B" d="M19.266,34.944c2.242,3.113,2.33,7.115,0.57,10.255l45.249-43.24L9.721,31.148C13.256,30.475,17.023,31.828,19.266,34.944"/>
<path fill="#FFFFFF" fill-opacity="0.8" d="M17.516,29.352c2.243,0.335,3.028,2.134,3.028,2.134L57.891,6.807L17.516,29.352z"/>
</g>
</svg>
To use this in your meter, we'll need to locate an accurate centre of rotation (the dot in the circle), and re-orient it so that it has zero angle. We may also need to adjust its scale to fit the meter.
By analysis and experimentation, the centre of rotation is at (10.44, 41.3) and the rotation needed to zero out the rotation is 35.8 deg.
Since the meter is centred at (0,0) we need to start by shifting and rotating the new needle by those amounts.
<svg width="650px" viewBox="0 0 65 51.333">
<g transform="rotate(35.8) translate(-10.44, -41.3)">
<path fill="#58595B" fill-rule="evenodd" d="M19.514,44.289c-1.652,5.013-7.056,7.736-12.066,6.083c-5.014-1.653-7.736-7.056-6.084-12.067c1.652-5.013,7.055-7.736,12.068-6.083C18.443,33.875,21.166,39.277,19.514,44.289 M17.318,43.564c-1.253,3.801-5.35,5.865-9.15,4.612c-3.797-1.253-5.863-5.35-4.609-9.148c1.254-3.8,5.349-5.865,9.148-4.612C16.506,35.67,18.57,39.766,17.318,43.564 M12.709,42.044c-0.412,1.254-1.765,1.936-3.02,1.523c-1.253-0.414-1.934-1.765-1.52-3.019c0.412-1.253,1.764-1.936,3.017-1.521C12.44,39.441,13.121,40.792,12.709,42.044"/>
<path fill="#58595B" d="M19.266,34.944c2.242,3.113,2.33,7.115,0.57,10.255l45.249-43.24L9.721,31.148C13.256,30.475,17.023,31.828,19.266,34.944"/>
<path fill="#FFFFFF" fill-opacity="0.8" d="M17.516,29.352c2.243,0.335,3.028,2.134,3.028,2.134L57.891,6.807L17.516,29.352z"/>
</g>
</svg>
The needle is now horizontal, and positioned at (0,0).
We can now integrate it into the previous solution:
let METER_DIVISIONS = 10;
let METER_DIVISIONS_GAP = 4;
// Initialise meter
let meterDivisionsElem = document.getElementById("meter-divisions");
// Calculate size of each meter division
let totalLen = meterDivisionsElem.getAttribute("r") * Math.PI;
let numGaps = METER_DIVISIONS - 1;
let divLen = (totalLen - METER_DIVISIONS_GAP * numGaps) / METER_DIVISIONS;
// Set meter divisions dash pattern
let pat = divLen + ' ' + METER_DIVISIONS_GAP + ' ';
meterDivisionsElem.setAttribute("stroke-dasharray", pat.repeat(numGaps) + ' ' + divLen + ' ' + totalLen);
// The slider form element
let sliderElem = document.getElementById("slider");
// The slider label element
let sliderLabelElem = document.getElementById("lbl");
// The needle element
let needleElem = document.getElementById("needle");
// The black bar element
let blackBarElem = document.getElementById("black-bar");
let blackBarLen = blackBarElem.getAttribute("r") * Math.PI;
// The meter colours element
let meterColoursElem = document.getElementById("meter-colours");
function setMeterTo(value)
{
// Update slider label
sliderLabelElem.textContent = value + '%';
// Update needle position
let rotation = value * 180 / 100;
needleElem.setAttribute("transform", "rotate(" + (-rotation) + ")");
// Update black bar length
let barLen = value * blackBarLen / 100;
blackBarElem.setAttribute("stroke-dasharray", barLen + ' ' + (2 * blackBarLen));
// Update coloured division section of the meter
meterColoursElem.setAttribute("transform", "rotate(" + rotation + ")");
}
// Add an input change handler to the slider
sliderElem.addEventListener("input", function(evt) {
setMeterTo(evt.target.value);
});
// Initialise meter to start value
setMeterTo(25);
#wrapper {
width: 600px;
}
#slider {
width: 100%;
}
#needle {
stroke-linecap: round;
}
<div id="wrapper">
<svg id="meter" viewBox="0 0 200 110">
<defs>
<circle id="meter-divisions" r="90" stroke-width="20" stroke-dasharray="282.7"/>
<mask id="meter-divisions-mask">
<use xlink:href="#meter-divisions" stroke="white"/>
</mask>
</defs>
<g transform="translate(100,100)">
<g transform="scale(1,-1)" fill="none">
<!-- The grey meter divisions -->
<use xlink:href="#meter-divisions" stroke="lightgrey"/>
<!-- The inner semicircular black bar -->
<circle id="black-bar" r="74" stroke="black" stroke-width="4" stroke-dasharray="232.5"/>
<!-- The coloured form of the ,meter divisions that gets rotated into view with the needle.
It is initially off screen but gets revealed as it rotates. It is masked by using
a shape matching the gray divisions -->
<g mask="url(#meter-divisions-mask">
<rect id="meter-colours" x="-100" y="-100" width="200" height="100" fill="red"/>
</g>
</g>
<!-- the needle -->
<g id="needle">
<g transform="rotate(35.8) translate(-10.44, -41.3)">
<path fill="#58595B" fill-rule="evenodd" d="M19.514,44.289c-1.652,5.013-7.056,7.736-12.066,6.083c-5.014-1.653-7.736-7.056-6.084-12.067c1.652-5.013,7.055-7.736,12.068-6.083C18.443,33.875,21.166,39.277,19.514,44.289 M17.318,43.564c-1.253,3.801-5.35,5.865-9.15,4.612c-3.797-1.253-5.863-5.35-4.609-9.148c1.254-3.8,5.349-5.865,9.148-4.612C16.506,35.67,18.57,39.766,17.318,43.564 M12.709,42.044c-0.412,1.254-1.765,1.936-3.02,1.523c-1.253-0.414-1.934-1.765-1.52-3.019c0.412-1.253,1.764-1.936,3.017-1.521C12.44,39.441,13.121,40.792,12.709,42.044"/>
<path fill="#58595B" d="M19.266,34.944c2.242,3.113,2.33,7.115,0.57,10.255l45.249-43.24L9.721,31.148C13.256,30.475,17.023,31.828,19.266,34.944"/>
<path fill="#FFFFFF" fill-opacity="0.8" d="M17.516,29.352c2.243,0.335,3.028,2.134,3.028,2.134L57.891,6.807L17.516,29.352z"/>
</g>
</g>
</g>
</svg>
<input id="slider" type="range" min="25" max="100" step="25" value="25" />
<label id="lbl" id="value" for="">0%</label>
</div>

My approach here is a pure CSS one ,i didn't use SVG and implementing JS code in this case is lot easier.
Output
var black = document.getElementsByClassName('black')[0];
var gradient = document.getElementsByClassName('gradient')[0]
var tick = document.getElementsByClassName('tick')[0];
var m = document.getElementById('m');
m.addEventListener('input', function() {
black.style.transform = gradient.style.transform = tick.style.transform = "translate(-50%,-50%)rotateZ(-" + (180 / 100) * m.value + "deg)"
});
* {
margin: 0px;
padding: 0px;
font-family: "arial";
}
.gauge_main,
.white,
.black,
.tick,
.gradient,
.chamber,
.meter {
position: absolute;
top: 50%;
left: 50%;
height: 280px;
width: 280px;
transform: translate(-50%, -50%);
transition: 0.4s;
}
.meter {
background-color: white;
height: 281px;
width: 281px;
border-radius: 50%;
clip-path: polygon(0 50%, 100% 50%, 100% 100%, 0 100%);
z-index: 1000;
}
.tick,
.chamber {
width: 160px;
height: 5px;
background: linear-gradient(to right, white 50%, black 50%);
z-index: 110;
transform-origin: 50%;
}
.tick {
z-index: 1001;
}
.chamber {
left: 50%;
background: white;
width: 280px;
height: 5px;
transform-origin: 50%;
transform: translate(-50%, -50%)rotateZ(calc(var(--i)*-20deg));
z-index: 20;
}
.white,
.black,
.gradient {
position: absolute;
background-color: black;
border-radius: 50%;
}
.white {
height: 180px;
width: 180px;
background-color: white;
z-index: 30;
}
.gradient {
height: 280px;
width: 280px;
background: linear-gradient(0deg, rgba(29, 216, 255, 1) 0%, rgba(4, 106, 255, 1) 50%, rgba(208, 212, 255, 1) 50%);
}
.black {
height: 200px;
width: 200px;
background: linear-gradient(to top, black 50%, rgba(208, 212, 255, 1) 50%);
box-shadow: 0px 0px 0px 5px white;
z-index: 25;
}
#keyframes load {
from {
transform: translate(-50%, -50%)rotateZ(0deg);
}
to {
transform: translate(-50%, -50%)rotateZ(-180deg);
}
}
input {
position: absolute;
top: 50%;
left: 50%;
width: 280px;
transform: translate(-50%, 50%);
}
<div class="gauge_main">
<div class="gradient"></div>
<div class="white"></div>
<div class="black"></div>
<div class="tick"></div>
<div style="--i:1" class="chamber"></div>
<div style="--i:2" class="chamber"></div>
<div style="--i:3" class="chamber"></div>
<div style="--i:4" class="chamber"></div>
<div style="--i:5" class="chamber"></div>
<div style="--i:6" class="chamber"></div>
<div style="--i:7" class="chamber"></div>
<div style="--i:8" class="chamber"></div>
<div style="--i:9" class="chamber"></div>
<div class="meter"></div>
</div>
<input type="range" id="m" name="meter" min="0" max="100" value="0">

How to make a random color function acting on svg groups call the same color for all elements in group

I have a function that creates a random color. I use this function in another function to call the color onclick of an svg groups. The problem is that all elements in the group get a random color, whilst it should be one random color for all elements in the group.
I have tried tweaking the function that calls the color. And I don't manage to tweak the random function properly.
function call1(){
const children = document.getElementById('btn1').children;
for(let i = 0; i < children.length; i++ ){
children[i].setAttribute('fill',getRandomColor());
}
}
function getRandomColor() {
var letters = '0123456789ABCDEF';
var color = '#';
for (var i = 0; i < 6; i++) {
color += letters[Math.floor(Math.random() * 16)];
}
return color;
}
function setRandomColor() {
$("#colorpad").css("background-color", getRandomColor());
}
#svg-object{
height: 100vh;
width: 100%;
background-size: cover;
background-position: center center;
border: 15px antiquewhite;
position: absolute;
}
<?xml version="1.0" encoding="utf-8"?>
<!-- Generator: Adobe Illustrator 16.0.0, SVG Export Plug-In . SVG Version: 6.00 Build 0) -->
<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN"
"http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd">
<svg id="svg-object" version="1.1" xmlns="http://www.w3.org/2000/svg"
xmlns:xlink="http://www.w3.org/1999/xlink" x="0px" y="0px"
width="800px" height="754px" viewBox="0 0 800 754" enable-
background="new 0 0 800 754" xml:space="preserve">
<g id="btn1" onclick="call1()">
<polygon fill="#FF0013" points="366.699,131 410,56 453.301,131 "/>
<polygon fill="#07FF00" points="323.699,656 367,581 410.301,656
"/>
<polygon fill="#0000FF" points="409.699,656 453,581 496.301,656
"/>
<polygon points="366.699,581 410,656 453.301,581 "/>
</g>
</svg>
I expect all the elements in the group to change to one random color.``

Instead of calling the getRandomColor() inside the loop, call it outside and set in a variable.
function call1() {
const children = document.getElementById('btn1').children;
let color = getRandomColor();
for (let i = 0; i < children.length; i++) {
children[i].setAttribute('fill', color);
}
}
function getRandomColor() {
var letters = '0123456789ABCDEF';
var color = '#';
for (var i = 0; i < 6; i++) {
color += letters[Math.floor(Math.random() * 16)];
}
return color;
}
function setRandomColor() {
$("#colorpad").css("background-color", getRandomColor());
}
#svg-object {
height: 100vh;
width: 100%;
background-size: cover;
background-position: center center;
border: 15px antiquewhite;
position: absolute;
}
<?xml version="1.0" encoding="utf-8"?>
<!-- Generator: Adobe Illustrator 16.0.0, SVG Export Plug-In . SVG Version: 6.00 Build 0) -->
<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN"
"http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd">
<svg id="svg-object" version="1.1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" x="0px" y="0px" width="800px" height="754px" viewBox="0 0 800 754" enable- background="new 0 0 800 754" xml:space="preserve">
<g id="btn1" onclick="call1()">
<polygon fill="#FF0013" points="366.699,131 410,56 453.301,131"/>
<polygon fill="#07FF00" points="323.699,656 367,581 410.301,656"/>
<polygon fill="#0000FF" points="409.699,656 453,581 496.301,656"/>
<polygon points="366.699,581 410,656 453.301,581"/>
</g>
</svg>

function call1() {
console.log('call1');
const children = document.getElementById('btn1').children;
var randomColor = getRandomColor();
for (let i = 0; i < children.length; i++) {
children[i].setAttribute('fill', randomColor);
}
}
Your getRandomColor function is working well.
But, for all elements, we need call getRandomColor once.

svg.js - How to get X position from SVG text element

I want to get the position from a text element inside a SVG using svg.js but I always get 0. The position should be relative to the svg element, after that I would place anothe element over that text.
window.onload=function(){
let mapa = SVG('#map').size('100%', '100%');
let txtText = SVG("#elements text").text();
let posX = SVG("#elements text").x();
let posVal = SVG("#elements text").has($(this).text() == "Messi");
$(".results").html("Text " + txtText + " position X is: " + posX);
}
body {
font-family: "Calibri";
}
.results {
width: 100%;
text-align: center;
font-size: 1.4rem;
margin: 5vh 0;
}
<script src="https://cdnjs.cloudflare.com/ajax/libs/svg.js/3.0.12/svg.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<div class="results">asd</div>
<svg version="1.1" id="map" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" x="0px" y="0px" viewBox="0 0 553 492" enable-background="new 0 0 553 492" xml:space="preserve">
<g id="elements">
<rect x="12" y="17" fill="#006633" width="525" height="462"/>
<path fill="#339933" d="M495,130c-2,68.4,26,142-51,211s-116,131-244,63S-39,373,77,237S140,96,252,69s173-53,220-22S497,63,495,130
z"/>
<text transform="matrix(1 0 0 1 210.7305 325.9219)" fill="#FFFFFF" font-size="80px">Messi</text>
</g>
</svg>
Thanks

Since the position is set by a transformation, you have to get it from the transformation info, like so:
window.onload=function(){
let mapa = SVG('#map').size('100%', '100%');
let txtText = SVG("#elements text").text();
let posVal = SVG("#elements text").has($(this).text() == "Messi");
let posX = SVG("#elements text").transform().translateX*SVG("#elements text").transform().scaleX;
$(".results").html("Text " + txtText + " position X is: " + posX);
}
body {
font-family: "Calibri";
}
.results {
width: 100%;
text-align: center;
font-size: 1.4rem;
margin: 5vh 0;
}
<script src="https://cdnjs.cloudflare.com/ajax/libs/svg.js/3.0.12/svg.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<div class="results">asd</div>
<svg version="1.1" id="map" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" x="0px" y="0px" viewBox="0 0 553 492" enable-background="new 0 0 553 492" xml:space="preserve">
<g id="elements">
<rect x="12" y="17" fill="#006633" width="525" height="462"/>
<path fill="#339933" d="M495,130c-2,68.4,26,142-51,211s-116,131-244,63S-39,373,77,237S140,96,252,69s173-53,220-22S497,63,495,130
z"/>
<text transform="matrix(1 0 0 1 210.7305 325.9219)" fill="#FFFFFF" font-size="80px">Messi</text>
</g>
</svg>

Alternatively you can use text.rbox(svg) to get a bounding box around the visual representation of your text relative to svg. With box.x you get the value you need

Responsive hero image as background

Iam trying to get this codepen interactive SVG mask as one of my pages in a website. But what i want to do is put the whole thing in a 540px height box and the width to be 100% ( stretched to browser edges maintaining the width and height ratio aspect. ). But i cant seem to figure out a way to do this. thanks in advance.
Below are the HTML,CSS,JS files from codepen.
console.clear();
var svg = document.querySelector("#demo");
var tl = new TimelineMax({onUpdate:onUpdate});
var pt = svg.createSVGPoint();
var data = document.querySelector(".tlProgress");
var counter = document.querySelector("#counter");
var ratio = 0.5625;
TweenMax.set("#instructions, #dial", {xPercent: -50});
TweenMax.set("#progressRing", {drawSVG:0});
tl.to("#masker", 2, {attr:{r:2400}, ease:Power2.easeIn});
tl.reversed(true);
function mouseHandler() {
tl.reversed(!tl.reversed());
}
function getPoint(evt){
pt.x = evt.clientX;
pt.y = evt.clientY;
return pt.matrixTransform(svg.getScreenCTM().inverse());
}
function mouseMove(evt) {
var newPoint = getPoint(evt);
TweenMax.set("#dot", {attr:{cx:newPoint.x, cy:newPoint.y}});
TweenMax.to("#ring, #masker", 0.88, {attr:{cx:newPoint.x, cy:newPoint.y}, ease:Power2.easeOut});
}
function onUpdate() {
var prog = (tl.progress() * 100);
TweenMax.set("#progressRing", {drawSVG:prog + "%"});
counter.textContent = prog.toFixed();
}
function newSize() {
var w = window.innerWidth ;
var h = window.innerHeight;
if (w > h * (16/9) ) {
TweenMax.set("#demo", { attr: { width: w, height: w * ratio } });
} else {
TweenMax.set("#demo", { attr: { width: h / ratio, height: h } });
}
var data = svg.getBoundingClientRect();
TweenMax.set("#demo", {x:w/2 - data.width/2});
TweenMax.set("#demo", {y:h/2 - data.height/2});
}
window.addEventListener("mousedown", mouseHandler);
window.addEventListener("mouseup", mouseHandler);
window.addEventListener("mousemove", mouseMove);
newSize();
window.addEventListener("resize", newSize);
body {
padding: 0;
margin: 0;
font-family: "Signika", sans-serif;
background: #262626;
height: 100vh;
width: 100%;
overflow: hidden;
color: white;
}
p {
margin: 0;
text-align: center;
white-space: nowrap;
}
* {
box-sizing: border-box;
}
#demo {
cursor: none;
position: absolute;
}
#instructions {
position: absolute;
padding: 12px;
bottom: 20px;
background: rgba(0, 0, 0, 0.75);
left: 50%;
cursor: none;
padding-top: 100px;
user-select: none;
border-radius: 4px;
}
#dial {
position: absolute;
top: 0;
left: 50%;
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<svg id="demo" xmlns="http://www.w3.org/2000/svg" x="0" y="0" width="1600" height="900" viewBox="0 0 1600 900">
<defs>
<radialGradient id="maskGradient">
<stop offset="50%" stop-color="#fff"/>
<stop offset="100%" stop-color="#000"/>
</radialGradient>
<mask id="theMask">
<circle id="masker" r="150" fill="url(#maskGradient)" cx="800" cy="450" />
</mask>
</defs>
<image id="lines" xlink:href="https://s3-us-west-2.amazonaws.com/s.cdpn.io/314556/roomSketch.jpg" x="0" y="0" width="1600" height="900" />
<g id="maskReveal" mask="url(#theMask)" >
<image id="regular" xlink:href="https://s3-us-west-2.amazonaws.com/s.cdpn.io/314556/roomColor.jpg" x="0" y="0" width="1600" height="900" />
</g>
<circle id="ring" r="20" fill="none" stroke="#dc143c" stroke-width="2" cx="800" cy="450" />
<circle id="dot" r="4" fill="#dc143c" cx="800" cy="450" />
</svg>
<div id="instructions">
<svg id="dial" xmlns="http://www.w3.org/2000/svg" width="100" height="100" viewBox="0 0 100 100">
<path id="progressRing" d="M50,10A40,40,0,1,1,10,50,40,40,0,0,1,50,10Z" fill="none" stroke="#fff" stroke-miterlimit="10" stroke-width="6"/>
<circle r="43" fill="none" stroke="#fff" cx="50" cy="50" stroke-width="2" opacity="0.5" />
<circle r="37" fill="none" stroke="#fff" cx="50" cy="50" stroke-width="2" opacity="0.5"/>
<text transform="translate(55 56)" text-anchor="start" font-size="20" fill="#fff">%</text>
<text id="counter" transform="translate(55 56)" text-anchor="end" font-size="20" fill="#fff">0</text>
</svg>
<p>Hover mouse to move mask around.</p>
<p>Hold & release mouse button to expand & contract mask.</p>
</div>

Is this what u want?
console.clear();
var svg = document.querySelector("#demo");
var tl = new TimelineMax({
onUpdate: onUpdate
});
var pt = svg.createSVGPoint();
var data = document.querySelector(".tlProgress");
var counter = document.querySelector("#counter");
var ratio = 0.5625;
TweenMax.set("#instructions, #dial", {
xPercent: -50
});
TweenMax.set("#progressRing", {
drawSVG: 0
});
tl.to("#masker", 2, {
attr: {
r: 2400
},
ease: Power2.easeIn
});
tl.reversed(true);
function mouseHandler() {
tl.reversed(!tl.reversed());
}
function getPoint(evt) {
pt.x = evt.clientX;
pt.y = evt.clientY;
return pt.matrixTransform(svg.getScreenCTM().inverse());
}
function mouseMove(evt) {
var newPoint = getPoint(evt);
TweenMax.set("#dot", {
attr: {
cx: newPoint.x,
cy: newPoint.y
}
});
TweenMax.to("#ring, #masker", 0.88, {
attr: {
cx: newPoint.x,
cy: newPoint.y
},
ease: Power2.easeOut
});
}
function onUpdate() {
var prog = (tl.progress() * 100);
TweenMax.set("#progressRing", {
drawSVG: prog + "%"
});
counter.textContent = prog.toFixed();
}
function newSize() {
var w = window.innerWidth;
var h = window.innerHeight;
if (w > h * (16 / 9)) {
TweenMax.set("#demo", {
attr: {
width: w,
height: w * ratio
}
});
} else {
TweenMax.set("#demo", {
attr: {
width: h / ratio,
height: h
}
});
}
var data = svg.getBoundingClientRect();
TweenMax.set("#demo", {
x: w / 2 - data.width / 2
});
TweenMax.set("#demo", {
y: h / 2 - data.height / 2
});
}
window.addEventListener("mousedown", mouseHandler);
window.addEventListener("mouseup", mouseHandler);
window.addEventListener("mousemove", mouseMove);
newSize();
window.addEventListener("resize", newSize);
body {
padding: 0;
margin: 0;
font-family: "Signika", sans-serif;
background: #262626;
height: 100vh;
width: 100%;
overflow: hidden;
color: white;
}
p {
margin: 0;
text-align: center;
white-space: nowrap;
}
* {
box-sizing: border-box;
}
#demo {
cursor: none;
position: absolute;
width: 100%;
height: 540px;
transform: matrix(2, 0, 0, 2, 0, 0);
}
#instructions {
position: absolute;
padding: 12px;
bottom: 20px;
background: rgba(0, 0, 0, 0.75);
left: 50%;
transform: translateX(-50%);
cursor: none;
padding-top: 100px;
user-select: none;
border-radius: 4px;
}
#dial {
position: absolute;
top: 0;
left: 50%;
transform: translateX(-50%);
}
.main {
position: relative;
height: 540px;
overflow: hidden;
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div class="main">
<svg id="demo" xmlns="http://www.w3.org/2000/svg" x="0" y="0" width="1600" height="900" viewBox="0 0 1600 900">
<defs>
<radialGradient id="maskGradient">
<stop offset="50%" stop-color="#fff"/>
<stop offset="100%" stop-color="#000"/>
</radialGradient>
<mask id="theMask">
<circle id="masker" r="150" fill="url(#maskGradient)" cx="800" cy="450" />
</mask>
</defs>
<image id="lines" xlink:href="https://s3-us-west-2.amazonaws.com/s.cdpn.io/314556/roomSketch.jpg" x="0" y="0" width="1600" height="900" />
<g id="maskReveal" mask="url(#theMask)" >
<image id="regular" xlink:href="https://s3-us-west-2.amazonaws.com/s.cdpn.io/314556/roomColor.jpg" x="0" y="0" width="1600" height="900" />
</g>
<circle id="ring" r="20" fill="none" stroke="#dc143c" stroke-width="2" cx="800" cy="450" />
<circle id="dot" r="4" fill="#dc143c" cx="800" cy="450" />
</svg>
<div id="instructions">
<svg id="dial" xmlns="http://www.w3.org/2000/svg" width="100" height="100" viewBox="0 0 100 100">
<path id="progressRing" d="M50,10A40,40,0,1,1,10,50,40,40,0,0,1,50,10Z" fill="none" stroke="#fff" stroke-miterlimit="10" stroke-width="6"/>
<circle r="43" fill="none" stroke="#fff" cx="50" cy="50" stroke-width="2" opacity="0.5" />
<circle r="37" fill="none" stroke="#fff" cx="50" cy="50" stroke-width="2" opacity="0.5"/>
<text transform="translate(55 56)" text-anchor="start" font-size="20" fill="#fff">%</text>
<text id="counter" transform="translate(55 56)" text-anchor="end" font-size="20" fill="#fff">0</text>
</svg>
<p>Hover mouse to move mask around.</p>
<p>Hold & release mouse button to expand & contract mask.</p>
</div>
</div>

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