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Allow multitouch filter. #59

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mbostock opened this issue Aug 21, 2019 · 0 comments
Closed

Allow multitouch filter. #59

mbostock opened this issue Aug 21, 2019 · 0 comments

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@mbostock
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Similar to d3/d3-zoom#176, it’d be nice if we could support brush.filter such that more than one touch is required to brush. Currently we ignore any touchstart where changedTouches.length < touches.length, meaning it’s not possible to have a second touch initiate brushing. However, if we tracked the id of the touch that initiated brushing, then we could do the right thing.
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@mbostock