Kineticjs Drag Multiple Images Without Grouping Them
is it possible to drag all children elements of a layer without grouping them? I have different layers with image-elements and a path shape. The path draws a bubble around the imag
Solution 1:
Yes, you can drag "related" nodes when a "container" node is dragged:
add a class to all children of a bubble (for example, each child's name:"bubble1")
on bubble
dragstart, save the bubble's starting positionon bubble
dragmove, calculate how far the bubble has been dragged and reposition all related elements by that same distance
Example code and a Demo: http://jsfiddle.net/m1erickson/Zr6TE/
<!DOCTYPE html><html><head><metacharset="utf-8"><title>Prototype</title><scripttype="text/javascript"src="http://code.jquery.com/jquery.min.js"></script><scriptsrc="http://d3lp1msu2r81bx.cloudfront.net/kjs/js/lib/kinetic-v5.0.1.min.js"></script><style>body{padding:20px;}
#container{
border:solid 1px#ccc;
margin-top: 10px;
width:350px;
height:350px;
}
</style><script>
$(function(){
var stage = newKinetic.Stage({
container: 'container',
width: 350,
height: 350
});
var layer = newKinetic.Layer();
stage.add(layer);
var bubble=newKinetic.Circle({
x:100,
y:100,
width:100,
height:100,
fill:"blue",
draggable:true,
});
bubble.lastPos;
bubble.on("dragstart",function(){
this.lastPos=this.position();
});
bubble.on("dragmove",function(){
var lastPos=bubble.lastPos;
var pos=bubble.position();
var deltaX=pos.x-lastPos.x;
var deltaY=pos.y-lastPos.y;
layer.find(".bubble1").each(function(child){
child.position({x:child.x()+deltaX, y:child.y()+deltaY} );
});
bubble.lastPos=pos;
layer.draw();
});
layer.add(bubble);
var circle1 = newKinetic.Circle({
x:80,
y:80,
radius:15,
fill: 'red',
stroke: 'black',
strokeWidth: 4,
draggable: true,
name:"bubble1"
});
layer.add(circle1);
//var circle2 = newKinetic.Circle({
x:110,
y:110,
radius:15,
fill: 'green',
stroke: 'black',
strokeWidth: 4,
draggable: true,
name:"bubble1"
});
layer.add(circle2);
//
layer.draw();
}); // end $(function(){});</script></head><body><divid="container"></div></body></html>
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