Created
January 18, 2017 09:33
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drop-filter in d3
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// add drop shadow for hovering/selected | |
var filter = svg.append('defs') | |
.append('filter') | |
.attr('id', 'drop-shadow') | |
// .attr('filterUnits', 'userSpaceOnUse') | |
.attr('x', 0) | |
.attr('y', 0) | |
.attr('width', '200%') | |
.attr('height', '200%') | |
filter.append('feOffset') | |
.attr('in', 'BackgroundAlpha') | |
.attr('dx', 3) | |
.attr('dy', 3) | |
.attr('result', 'offOut'); | |
filter.append('feGaussianBlur') | |
.attr('in', 'BackgroundAlpha') | |
.attr('stdDeviation', 5) | |
.attr('result', 'blurOut'); | |
var feMerge = filter.append('feMerge'); | |
feMerge.append('feMergeNode') | |
.attr('in', 'BackgroundAlpha'); | |
feMerge.append('feMergeNode') | |
.attr('in', 'SourceGraphic'); |
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