dsaffo/README.md

## README.md

      
    Raw
  

              README.md
            
          
     VisConnect Where's the Square

 
      This VisConnect example, created by Micha Schawb, demonstrates divde and conquer collaberative brushing. Click the visconnect logo on the bottom right and send the coppied URL to a friend. Once they open the link all your interactions will be synchronized! 
        

## index.html
<!DOCTYPE html>
<meta charset="utf-8">
<style>
    #left {
        float: left;
        width: 400px;
    }
    #right {
        float: left;
        width: 400px;
        margin-left: 10px;
    }
    #overview svg {
        left: 0;
        top: 0;
        border: 1px solid #000;
    }
    #detail {
        position: relative;
    }
    #detail-view {
        width: 400px;
        height: 250px;
    }
    .marker-button {
        margin: 10px 10px 0 0;
        padding: 8px;
        border: none;
    }
    #noWaldoButton {
        background: #99ff99;
    }
    #waldoButton {
        background: #ff9999;
    }
    #title {
        position: relative;
    }
    #squareLogo {
        position: absolute;
        top: 5px;
        left: 300px;
        display: block;
        width: 30px;
        height: 30px;
        background: #0ff;
    }
    #recommendedBrush {
        width: 40px;
        height: 40px;
        display: inline-block;
        background: #dbdbdb;
        border: 1px solid #6a6a6a;
    }
    .detail-crop {
        position: absolute;
        background: #eee;
    }
    #detail-crop-left {
        left: 0;
    }
    #detail-crop-right {
        right: 0;
    }
    #detail-crop-top {
        top: 0;
    }
    #detail-crop-bottom {
        bottom: 0;
    }
    #detail-crop-left, #detail-crop-right {
        height: 100%;
        top: 0;
    }
    #detail-crop-top, #detail-crop-bottom {
        width: 100%;
        left: 0;
    }
</style>
<body collaboration="live" custom-events="brush-message, label-message" ignore-events="all">
<h1 id="title">Where's the Square?<div id="squareLogo"></div></h1>
<div id="left">
    <h2>Overview</h2>
    <div id="overview">

    </div>

    Recommended brush size: <div id="recommendedBrush"></div>
</div>
<div id="right">
    <h2>Detail</h2>
    <div id="detail">
        <svg id="detail-view" width="400" height="250"></svg>
        <div id="crop">
            <div id="detail-crop-left" class="detail-crop"></div>
            <div id="detail-crop-right" class="detail-crop"></div>
            <div id="detail-crop-top" class="detail-crop"></div>
            <div id="detail-crop-bottom" class="detail-crop"></div>
        </div>
    </div>
    <button id="noWaldoButton" class="marker-button">No Square Here (Shortcut: &lt;N&gt;)</button>
    <button id="waldoButton" class="marker-button">Found Square! (Shortcut: &lt;S&gt;)</button>
    <!--<button id="removeLabelButton" class="marker-button">Remove Label (Shortcut: &lt;R&gt;)</button>-->
</div>
<script src="https://unpkg.com/peerjs@1.0.4/dist/peerjs.min.js"></script>
<script src="https://unpkg.com/visconnect@latest/visconnect-bundle.js"></script>
<script src="//d3js.org/d3.v5.js"></script>
<script>
    const width = 400;
    const height = 250;
    const dataCount = 3000;

    const overviewWrap = d3.select('#overview');
    const overviewSvg = overviewWrap.append("svg").attr("width", width).attr("height", height);
    const overviewDataG = overviewSvg.append('g');
    const overviewLabels = overviewSvg.append('g').style('opacity', '0.5');
    const detail = d3.select('#detail-view').append('g');
    let x0, y0, x1, y1;
    const cropLeft = d3.select('#detail-crop-left');
    const cropRight = d3.select('#detail-crop-right');
    const cropTop = d3.select('#detail-crop-top');
    const cropBottom = d3.select('#detail-crop-bottom');

    const data = new Array(dataCount).fill(0).map(() => {
         return {
             x: Math.round(width*vc.random()),
             y: Math.round(height*vc.random()),
             type: 'circle',
         };
    });
    data[Math.round(dataCount * vc.random())].type = 'rect';
    overviewDataG.selectAll('*').data(data).enter()
        .append(d => document.createElementNS("http://www.w3.org/2000/svg", d.type))
        .attr('fill', d => d.type === 'circle' ? '#00f' : '#00c3ff')
        .attr('x', d => d.x).attr('y', d => d.y).attr('cx', d => d.x).attr('cy', d => d.y)
        .attr('r', 0.75).attr('width', 1.5).attr('height', 1.5);

    detail.selectAll('*').data(data).enter()
        .append(d => document.createElementNS("http://www.w3.org/2000/svg", d.type))
        .attr('fill', d => d.type === 'circle' ? '#00f' : '#00c3ff')
        .attr('x', d => d.x).attr('y', d => d.y).attr('cx', d => d.x).attr('cy', d => d.y)
        .attr('r', 0.75).attr('width', 1.5).attr('height', 1.5);

    const updateDetailView = () => {
        [[x0, y0], [x1, y1]] = d3.event.selection;
        let [selWidth, selHeight] = [x1 - x0, y1 - y0];
        let cropPercent;
        let cropXoffset = 0;
        let cropYoffset = 0;
        if(selWidth < selHeight) {
            cropPercent = 1 - selWidth / selHeight;
            selWidth = selHeight;
            cropXoffset = 400*cropPercent/2;
            cropLeft.style('width', `${400*cropPercent/2}px`);
            cropRight.style('width', `${400*cropPercent/2}px`);
            cropTop.style('height', `0`);
            cropBottom.style('height', `0`);
        } else {
            cropPercent = 1 - selHeight / selWidth;
            selHeight = selWidth;
            cropLeft.style('width', `0`);
            cropRight.style('width', `0`);
            cropYoffset = 250*cropPercent/2;
            cropTop.style('height', `${250*cropPercent/2}px`);
            cropBottom.style('height', `${250*cropPercent/2}px`);
        }

        const scale = width / selWidth;
        //const [imageWidth, imageHeight] = [400*widthOrig/selWidth, 250*heightOrig/selHeight];

        detail.attr('transform', `scale(${scale}) translate(${-x0+cropXoffset/scale} ${-y0+cropYoffset/scale})`);

        /*detail.selectAll('rect')
            .attr('width', scale*2).attr('height', scale*2)
            .attr('x', d => -x0+scale*d.x)
            .attr('y', d => -y0+scale*d.y);

        detail.selectAll('circle')
            .attr('r', scale)
            .attr('cx', d => -x0+scale*d.x)
            .attr('cy', d => -y0+scale*d.y);*/

        //detail.style('background-size', `${imageWidth}px ${imageHeight}px`);
        //detail.style('background-position', `${-x0*imageWidth/widthOrig+cropXoffset}px ${-y0*imageHeight/heightOrig+cropYoffset}px`);
    };

    const brush = vc.brush()
        .extent([[0,0], [width, height]])
        .on("brush", updateDetailView);

    overviewSvg.call(brush);

    const onLabel = (color) => {
        return () => {
            const event = new CustomEvent('label-message', {detail: {positions: [x0, y0, x1, y1], color}});
            document.body.dispatchEvent(event);
        }
    }

    document.body.addEventListener('label-message', (e) => {
        const [x0, y0, x1, y1] = e.detail.positions;
        overviewLabels.append('rect')
            .attr('x', x0)
            .attr('y', y0)
            .attr('width', (x1 - x0))
            .attr('height', (y1 - y0))
            .attr('fill', e.detail.color)
            .style('pointer-events', 'none');
    });

    const onWaldo = onLabel('#ff3333');
    const onNoWaldo = onLabel('#99ff99');
    document.getElementById('noWaldoButton').addEventListener('click', onNoWaldo);
    document.getElementById('waldoButton').addEventListener('click', onWaldo);

    window.addEventListener('keydown', (event) => {
        if(event.key === 'n') { onNoWaldo(); }
        if(event.key === 's') { onWaldo(); }
    })
</script>
	<!DOCTYPE html>
	<meta charset="utf-8">
	<style>
	#left {
	float: left;
	width: 400px;
	}
	#right {
	float: left;
	width: 400px;
	margin-left: 10px;
	}
	#overview svg {
	left: 0;
	top: 0;
	border: 1px solid #000;
	}
	#detail {
	position: relative;
	}
	#detail-view {
	width: 400px;
	height: 250px;
	}
	.marker-button {
	margin: 10px 10px 0 0;
	padding: 8px;
	border: none;
	}
	#noWaldoButton {
	background: #99ff99;
	}
	#waldoButton {
	background: #ff9999;
	}
	#title {
	position: relative;
	}
	#squareLogo {
	position: absolute;
	top: 5px;
	left: 300px;
	display: block;
	width: 30px;
	height: 30px;
	background: #0ff;
	}
	#recommendedBrush {
	width: 40px;
	height: 40px;
	display: inline-block;
	background: #dbdbdb;
	border: 1px solid #6a6a6a;
	}
	.detail-crop {
	position: absolute;
	background: #eee;
	}
	#detail-crop-left {
	left: 0;
	}
	#detail-crop-right {
	right: 0;
	}
	#detail-crop-top {
	top: 0;
	}
	#detail-crop-bottom {
	bottom: 0;
	}
	#detail-crop-left, #detail-crop-right {
	height: 100%;
	top: 0;
	}
	#detail-crop-top, #detail-crop-bottom {
	width: 100%;
	left: 0;
	}
	</style>
	<body collaboration="live" custom-events="brush-message, label-message" ignore-events="all">
	<h1 id="title">Where's the Square?<div id="squareLogo"></div></h1>
	<div id="left">
	<h2>Overview</h2>
	<div id="overview">

	</div>

	Recommended brush size: <div id="recommendedBrush"></div>
	</div>
	<div id="right">
	<h2>Detail</h2>
	<div id="detail">
	<svg id="detail-view" width="400" height="250"></svg>
	<div id="crop">
	<div id="detail-crop-left" class="detail-crop"></div>
	<div id="detail-crop-right" class="detail-crop"></div>
	<div id="detail-crop-top" class="detail-crop"></div>
	<div id="detail-crop-bottom" class="detail-crop"></div>
	</div>
	</div>
	<button id="noWaldoButton" class="marker-button">No Square Here (Shortcut: <N>)</button>
	<button id="waldoButton" class="marker-button">Found Square! (Shortcut: <S>)</button>
	<!--<button id="removeLabelButton" class="marker-button">Remove Label (Shortcut: <R>)</button>-->
	</div>
	<script src="https://unpkg.com/peerjs@1.0.4/dist/peerjs.min.js"></script>
	<script src="https://unpkg.com/visconnect@latest/visconnect-bundle.js"></script>
	<script src="//d3js.org/d3.v5.js"></script>
	<script>
	const width = 400;
	const height = 250;
	const dataCount = 3000;

	const overviewWrap = d3.select('#overview');
	const overviewSvg = overviewWrap.append("svg").attr("width", width).attr("height", height);
	const overviewDataG = overviewSvg.append('g');
	const overviewLabels = overviewSvg.append('g').style('opacity', '0.5');
	const detail = d3.select('#detail-view').append('g');
	let x0, y0, x1, y1;
	const cropLeft = d3.select('#detail-crop-left');
	const cropRight = d3.select('#detail-crop-right');
	const cropTop = d3.select('#detail-crop-top');
	const cropBottom = d3.select('#detail-crop-bottom');

	const data = new Array(dataCount).fill(0).map(() => {
	return {
	x: Math.round(width*vc.random()),
	y: Math.round(height*vc.random()),
	type: 'circle',
	};
	});
	data[Math.round(dataCount * vc.random())].type = 'rect';
	overviewDataG.selectAll('*').data(data).enter()
	.append(d => document.createElementNS("http://www.w3.org/2000/svg", d.type))
	.attr('fill', d => d.type === 'circle' ? '#00f' : '#00c3ff')
	.attr('x', d => d.x).attr('y', d => d.y).attr('cx', d => d.x).attr('cy', d => d.y)
	.attr('r', 0.75).attr('width', 1.5).attr('height', 1.5);

	detail.selectAll('*').data(data).enter()
	.append(d => document.createElementNS("http://www.w3.org/2000/svg", d.type))
	.attr('fill', d => d.type === 'circle' ? '#00f' : '#00c3ff')
	.attr('x', d => d.x).attr('y', d => d.y).attr('cx', d => d.x).attr('cy', d => d.y)
	.attr('r', 0.75).attr('width', 1.5).attr('height', 1.5);

	const updateDetailView = () => {
	[[x0, y0], [x1, y1]] = d3.event.selection;
	let [selWidth, selHeight] = [x1 - x0, y1 - y0];
	let cropPercent;
	let cropXoffset = 0;
	let cropYoffset = 0;
	if(selWidth < selHeight) {
	cropPercent = 1 - selWidth / selHeight;
	selWidth = selHeight;
	cropXoffset = 400*cropPercent/2;
	cropLeft.style('width', `${400*cropPercent/2}px`);
	cropRight.style('width', `${400*cropPercent/2}px`);
	cropTop.style('height', `0`);
	cropBottom.style('height', `0`);
	} else {
	cropPercent = 1 - selHeight / selWidth;
	selHeight = selWidth;
	cropLeft.style('width', `0`);
	cropRight.style('width', `0`);
	cropYoffset = 250*cropPercent/2;
	cropTop.style('height', `${250*cropPercent/2}px`);
	cropBottom.style('height', `${250*cropPercent/2}px`);
	}

	const scale = width / selWidth;
	//const [imageWidth, imageHeight] = [400widthOrig/selWidth, 250heightOrig/selHeight];

	detail.attr('transform', `scale(${scale}) translate(${-x0+cropXoffset/scale} ${-y0+cropYoffset/scale})`);

	/*detail.selectAll('rect')
	.attr('width', scale2).attr('height', scale2)
	.attr('x', d => -x0+scale*d.x)
	.attr('y', d => -y0+scale*d.y);

	detail.selectAll('circle')
	.attr('r', scale)
	.attr('cx', d => -x0+scale*d.x)
	.attr('cy', d => -y0+scaled.y);/

	//detail.style('background-size', `${imageWidth}px ${imageHeight}px`);
	//detail.style('background-position', `${-x0imageWidth/widthOrig+cropXoffset}px ${-y0imageHeight/heightOrig+cropYoffset}px`);
	};

	const brush = vc.brush()
	.extent([[0,0], [width, height]])
	.on("brush", updateDetailView);

	overviewSvg.call(brush);

	const onLabel = (color) => {
	return () => {
	const event = new CustomEvent('label-message', {detail: {positions: [x0, y0, x1, y1], color}});
	document.body.dispatchEvent(event);
	}
	}

	document.body.addEventListener('label-message', (e) => {
	const [x0, y0, x1, y1] = e.detail.positions;
	overviewLabels.append('rect')
	.attr('x', x0)
	.attr('y', y0)
	.attr('width', (x1 - x0))
	.attr('height', (y1 - y0))
	.attr('fill', e.detail.color)
	.style('pointer-events', 'none');
	});

	const onWaldo = onLabel('#ff3333');
	const onNoWaldo = onLabel('#99ff99');
	document.getElementById('noWaldoButton').addEventListener('click', onNoWaldo);
	document.getElementById('waldoButton').addEventListener('click', onWaldo);

	window.addEventListener('keydown', (event) => {
	if(event.key === 'n') { onNoWaldo(); }
	if(event.key === 's') { onWaldo(); }
	})
	</script>