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May 21, 2018 08:37
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Makes a jCanvas layer draggable along a defined grid
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// Available in jCanvas v20.1.0 | |
// The pixel multiple to snap to | |
var snapToAmount = 40; | |
// Round the given value to the nearest multiple of n | |
function nearest(value, n) { | |
return Math.round(value / n) * n; | |
} | |
$('canvas').drawArc({ | |
layer: true, | |
draggable: true, | |
fillStyle: '#36c', | |
x: 160, y: 120, | |
radius: 50, | |
updateDragX: function (layer, x) { | |
return nearest(x, snapToAmount); | |
}, | |
updateDragY: function (layer, y) { | |
return nearest(y, snapToAmount); | |
} | |
}) |
FYI, this seems to do strange things when using dragGroups
as well.
So easy to integrate thank you!
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I swear, you've thought of everything... 👍