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Add constrainRotation option to ol.View2D

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Tom Payne
2014-01-27 15:13:50 +01:00
parent 07a717d967
commit 3196afb4c7
2 changed files with 16 additions and 1 deletions
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12
src/ol/view2d.js
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@@ -572,7 +572,17 @@ ol.View2D.createRotationConstraint_ = function(options) {
var enableRotation = goog.isDef(options.enableRotation) ?
options.enableRotation : true;
if (enableRotation) {
return ol.RotationConstraint.createSnapToZero();
var constrainRotation = options.constrainRotation;
if (!goog.isDef(constrainRotation) || constrainRotation === true) {
return ol.RotationConstraint.createSnapToZero();
} else if (constrainRotation === false) {
return ol.RotationConstraint.none;
} else if (goog.isNumber(constrainRotation)) {
return ol.RotationConstraint.createSnapToN(constrainRotation);
} else {
goog.asserts.fail();
return ol.RotationConstraint.none;
}
} else {
return ol.RotationConstraint.disable;
}