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Improve type checking in ol.RotationConstraint

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This commit is contained in:
Tom Payne
2013-04-30 21:32:19 +02:00
parent bd9d723315
commit fe9fee1609
1 changed files with 31 additions and 19 deletions
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50
src/ol/rotationconstraint.js
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@@ -28,14 +28,20 @@ ol.RotationConstraint.none = function(rotation, delta) {
*/
ol.RotationConstraint.createSnapToN = function(n) {
var theta = 2 * Math.PI / n;
return function(rotation, delta) {
if (goog.isDef(rotation)) {
rotation = Math.floor((rotation + delta) / theta + 0.5) * theta;
return rotation;
} else {
return undefined;
}
};
return (
/**
* @param {number|undefined} rotation Rotation.
* @param {number} delta Delta.
* @return {number|undefined} Rotation.
*/
function(rotation, delta) {
if (goog.isDef(rotation)) {
rotation = Math.floor((rotation + delta) / theta + 0.5) * theta;
return rotation;
} else {
return undefined;
}
});
};
@@ -45,15 +51,21 @@ ol.RotationConstraint.createSnapToN = function(n) {
*/
ol.RotationConstraint.createSnapToZero = function(opt_tolerance) {
var tolerance = opt_tolerance || 0.1;
return function(rotation, delta) {
if (goog.isDef(rotation)) {
if (Math.abs(rotation + delta) <= tolerance) {
return 0;
} else {
return rotation + delta;
}
} else {
return undefined;
}
};
return (
/**
* @param {number|undefined} rotation Rotation.
* @param {number} delta Delta.
* @return {number|undefined} Rotation.
*/
function(rotation, delta) {
if (goog.isDef(rotation)) {
if (Math.abs(rotation + delta) <= tolerance) {
return 0;
} else {
return rotation + delta;
}
} else {
return undefined;
}
});
};