Sha256: 4552b3d028836f404995ec66e6518c5092885e3bf0d299b438a10a72217319ef
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Size: 876 Bytes
Versions: 3
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Stored size: 876 Bytes
Contents
/*
* L.Transformation is an utility class to perform simple point transformations through a 2d-matrix.
*/
L.Transformation = L.Class.extend({
initialize: function (/*Number*/ a, /*Number*/ b, /*Number*/ c, /*Number*/ d) {
this._a = a;
this._b = b;
this._c = c;
this._d = d;
},
transform: function (point, scale) {
return this._transform(point.clone(), scale);
},
// destructive transform (faster)
_transform: function (/*Point*/ point, /*Number*/ scale) /*-> Point*/ {
scale = scale || 1;
point.x = scale * (this._a * point.x + this._b);
point.y = scale * (this._c * point.y + this._d);
return point;
},
untransform: function (/*Point*/ point, /*Number*/ scale) /*-> Point*/ {
scale = scale || 1;
return new L.Point(
(point.x / scale - this._b) / this._a,
(point.y / scale - this._d) / this._c);
}
});
Version data entries
3 entries across 3 versions & 1 rubygems