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HTML 

              
                <!-- Notes: this will be fixed in 4 days as soon as mapbox api releases support for ray picking in order to show information about each individual room in a building reguardless of whether of not it is on the ground level. in this example the base height is 'floated' @ const secondfloorbase to resemble a cutout of an upper level in a building but the tooltip only shows at e.point where 'e' is the event of mourse move in the bounds where the extrusion is located @ a point on 2D map but not where it is as located in 3D space -->
<!DOCTYPE html>
<html>
<head>
    <meta charset='utf-8' />
    <title>Extrude polygons for 3D indoor mapping.</title>
    <meta name='viewport' content='initial-scale=1,maximum-scale=1,user-scalable=no' />
    <script src='https://api.tiles.mapbox.com/mapbox-gl-js/v0.52.0/mapbox-gl.js'></script>
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});


var popup = new mapboxgl.Popup({
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        closeOnClick: false
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}
        },
        'paint': {
            // See the Mapbox Style Specification for details on data expressions.
            // https://docs.mapbox.com/mapbox-gl-js/style-spec/#expressions

            // Get the fill-extrusion-color from the source 'color' property.
            'fill-extrusion-color': ['get', 'color'],

            // Get fill-extrusion-height from the source 'height' property.
            'fill-extrusion-height': ['get', 'height'],

            // Get fill-extrusion-base from the source 'base_height' property.
            'fill-extrusion-base': ['get', 'base_height'],

            // Make extrusions slightly opaque for see through indoor walls.
            'fill-extrusion-opacity': 0.9
        }
    });
});
</script>

</body>
</html>
!

CSS 

              
                body {
    margin: 0;
    padding: 0;
}

#map {
    position: absolute;
    top: 0;
    bottom: 0;
    width: 100%;
}

#C,
#A {
    visibility: hidden;
}

.footer {
    padding: 20px 0;
    text-align: center;
    position: absolute;
    bottom: 0;
    width: 100%;
    height: 60px;
    /* Height of the footer */
    background: #ddd;
    z-index: 10;
}

.social {
    display: inline-block;
    width: 40px;
    height: 40px;
    margin: 0 10px;
    line-height: 40px;
    font-family: Entypo;
    font-size: 35px;
    text-align: center;
    color: #bbb;
    border-radius: 50%;
    background: #eee;
    overflow: hidden;
    transition: color .3s;
}

.social:hover {
    color: #59d;
    cursor: pointer;
}

.social {
    box-shadow: rgb(210, 210, 210) 1px 1px, rgb(210, 210, 210) 2px 2px, rgb(211, 211, 211) 3px 3px, rgb(211, 211, 211) 4px 4px, rgb(211, 211, 211) 5px 5px, rgb(212, 212, 212) 6px 6px, rgb(212, 212, 212) 7px 7px, rgb(212, 212, 212) 8px 8px, rgb(213, 213, 213) 9px 9px, rgb(213, 213, 213) 10px 10px, rgb(214, 214, 214) 11px 11px, rgb(214, 214, 214) 12px 12px, rgb(214, 214, 214) 13px 13px, rgb(215, 215, 215) 14px 14px, rgb(215, 215, 215) 15px 15px, rgb(215, 215, 215) 16px 16px, rgb(216, 216, 216) 17px 17px, rgb(216, 216, 216) 18px 18px, rgb(216, 216, 216) 19px 19px, rgb(217, 217, 217) 20px 20px, rgb(217, 217, 217) 21px 21px, rgb(218, 218, 218) 22px 22px, rgb(218, 218, 218) 23px 23px, rgb(218, 218, 218) 24px 24px, rgb(219, 219, 219) 25px 25px, rgb(219, 219, 219) 26px 26px, rgb(219, 219, 219) 27px 27px, rgb(220, 220, 220) 28px 28px, rgb(220, 220, 220) 29px 29px, rgb(221, 221, 221) 30px 30px;
    text-shadow: rgb(226, 226, 226) 1px 1px, rgb(227, 227, 227) 2px 2px, rgb(227, 227, 227) 3px 3px, rgb(228, 228, 228) 4px 4px, rgb(229, 229, 229) 5px 5px, rgb(229, 229, 229) 6px 6px, rgb(230, 230, 230) 7px 7px, rgb(230, 230, 230) 8px 8px, rgb(231, 231, 231) 9px 9px, rgb(232, 232, 232) 10px 10px, rgb(232, 232, 232) 11px 11px, rgb(233, 233, 233) 12px 12px, rgb(233, 233, 233) 13px 13px, rgb(234, 234, 234) 14px 14px, rgb(235, 235, 235) 15px 15px, rgb(235, 235, 235) 16px 16px, rgb(236, 236, 236) 17px 17px, rgb(236, 236, 236) 18px 18px, rgb(237, 237, 237) 19px 19px, rgb(238, 238, 238) 20px 20px;
}

i {
    font-size: 30px;
}


/* ========================Animation ========================*/

<!-- .hide-splash {
    display: none;
}

.loading {
    position: absolute;
    top: 0;
    bottom: 0;
    left: 0;
    right: 0;
    background-color: #DDDDDD;
}

.loading-logo {
    width: 300px;
    position: absolute;
    top: 5vh;
    left: 0;
    right: 0;
    margin: 0 auto;
    display: inline-block;
}

#splash-logo {
    text-align: center;
}

.draw {
    animation: draw 3000ms ease-in-out infinite;
    stroke: #000000;
}

@keyframes draw {
    0% {
        stroke-dasharray: 0 400;
        stroke-dashoffset: 200;
        fill-opacity: 0;
        stroke-width: 2;
    }
    37% {
        stroke-dasharray: 200 0;
        stroke-dashoffset: 200;
        fill-opacity: 0;
        stroke-width: 2;
    }
    50% {
        fill-opacity: 1;
        stroke-width: 0;
    }
    85% {
        stroke: #767c8f;
        ;
        stroke-width: 2;
        fill-opacity: .7
    }
    100% {
        fill-opacity: 0;
        stroke-width: 0;
    }
}

@keyframes invis {
    25% {
        opacity: 1;
    }
    50% {
        opacity: 0;
    }
}

--> svg {
    height: 80vh;
    margin: 5vh;
}
!

JS 

              
                
       window.onload = function(){
    
		  setTimeout(function(){ $('#splash-logo').fadeOut() }, 4000);
       }
     


TweenLite.set('#morphToC,#morphToA',{fill:'none'});

var action = new TimelineMax({repeat:-1,repeatDelay:1,delay:1})
.staggerFrom('#blackCircle, #ring',0.4,{scale:0, transformOrigin:"center", ease: Sine.easeIn},0.1)
.to("#morphToC",1,{morphSVG: "#C", fill:'#5b5a59', ease: Expo.easeInOut})
.to("#morphToA",1,{morphSVG: "#A", fill:'#5b5a59', ease: Expo.easeInOut},"-=0.8")
!
999px

Console