fossfreedom
53 linhas
1.5 KiB
JavaScript
53 linhas
1.5 KiB
JavaScript
/* ContentFlowAddOn_roundabout, version 3.0
|
|
* (c) 2008 - 2010 Sebastian Kutsch
|
|
* <http://www.jacksasylum.eu/ContentFlow/>
|
|
*
|
|
* This file is distributed under the terms of the MIT license.
|
|
* (see http://www.jacksasylum.eu/ContentFlow/LICENSE)
|
|
*/
|
|
|
|
new ContentFlowAddOn ('roundabout', {
|
|
|
|
ContentFlowConf: {
|
|
circularFlow: true,
|
|
visibleItems: -1,
|
|
relativeItemPosition: "top center",
|
|
endOpacity: 0.5,
|
|
|
|
/*
|
|
* calculates the size of the item at its relative position x
|
|
* returns a size object
|
|
*/
|
|
calcSize: function (item) {
|
|
var rP = item.relativePosition;
|
|
//var rPN = relativePositionNormed;
|
|
//var vI = rPN != 0 ? rP/rPN : 0 ; // visible Items
|
|
|
|
var h = 1/(Math.abs(rP)+1);
|
|
var w = h;
|
|
return {width: w, height: h};
|
|
},
|
|
|
|
/*
|
|
* calculates the position of an item within the flow element
|
|
* returns a vector object
|
|
*/
|
|
calcCoordinates: function (item) {
|
|
var rP = item.relativePosition;
|
|
var rPN = item.relativePositionNormed;
|
|
var vI = rPN != 0 ? rP/rPN : 0 ; // visible Items
|
|
|
|
var f = 1 - 1/Math.exp( Math.abs(rP)*0.75);
|
|
var x = item.side * vI/(vI+1)* f;
|
|
var y = 1;
|
|
|
|
var f = Math.sin(Math.PI * (rP*(1+1/(rP*rP+1))) / (vI+1));
|
|
var x = vI/(vI+1)* f;
|
|
var y = 1 - Math.abs(rP)*1.5/(vI+1);
|
|
|
|
return {x: x, y: y};
|
|
}
|
|
|
|
}
|
|
});
|