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Merge pull request #247 from jmnetus/master

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Check that zoom reference point is valid before using it
This commit is contained in:
iangilman 2013-10-08 10:17:29 -07:00
commit 45ee8236e3
1 changed files with 4 additions and 2 deletions
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6
src/viewport.js
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@ -536,7 +536,7 @@ $.Viewport.prototype = {
* @return {OpenSeadragon.Viewport} Chainable.
*/
zoomBy: function( factor, refPoint, immediately ) {
if( refPoint ) {
if( refPoint instanceof $.Point && !isNaN( refPoint.x ) && !isNaN( refPoint.y ) ) {
refPoint = refPoint.rotate(
-this.degrees,
new $.Point( this.centerSpringX.target.value, this.centerSpringY.target.value )
@ -551,7 +551,9 @@ $.Viewport.prototype = {
*/
zoomTo: function( zoom, refPoint, immediately ) {
this.zoomPoint = refPoint instanceof $.Point ?
this.zoomPoint = refPoint instanceof $.Point &&
!isNaN(refPoint.x) &&
!isNaN(refPoint.y) ?
refPoint :
null;