snap position tracked by model, see ##6

phetsims · May 3, 2017 · 93c6a1e · 93c6a1e
1 parent 5b77b1d
commit 93c6a1e
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diff --git a/js/gravity-force-lab-basics/model/GravityForceLabBasicsModel.js b/js/gravity-force-lab-basics/model/GravityForceLabBasicsModel.js
@@ -56,7 +56,10 @@ define( function( require ) {
     var leftBoundary = GravityForceLabBasicsConstants.LEFT_MASS_BOUNDARY;
     var rightBoundary = GravityForceLabBasicsConstants.RIGHT_MASS_BOUNDARY;
 
-    InverseSquareLawModel.call( this, InverseSquareLawCommonConstants.G, mass1, mass2, leftBoundary, rightBoundary, tandem.createTandem( 'gravityForceLabBasicsModel' ) );
+    InverseSquareLawModel.call( this, InverseSquareLawCommonConstants.G, mass1, mass2, leftBoundary, rightBoundary, tandem.createTandem( 'gravityForceLabBasicsModel' ), {
+      snapObjectsToNearest: GravityForceLabBasicsConstants.MASS_POSITION_DELTA,
+      minSeparationBetweenObjects: 200 // in meters
+    } );
 
   }
 

diff --git a/js/gravity-force-lab-basics/view/GFLBMassNode.js b/js/gravity-force-lab-basics/view/GFLBMassNode.js
@@ -14,7 +14,6 @@ define( function( require ) {
   var inherit = require( 'PHET_CORE/inherit' );
   var RangeWithValue = require('DOT/RangeWithValue'); 
   var RadialGradient = require( 'SCENERY/util/RadialGradient' );
-  var GravityForceLabBasicsConstants = require( 'GRAVITY_FORCE_LAB_BASICS/gravity-force-lab-basics/GravityForceLabBasicsConstants' );
   var PhetFont = require( 'SCENERY_PHET/PhetFont' );
   var ObjectNode = require('INVERSE_SQUARE_LAW_COMMON/view/ObjectNode');
 
@@ -35,7 +34,7 @@ define( function( require ) {
       labelFont: new PhetFont( 25 ),
       labelMaxWidth: 40,
       forceReadoutDecimalPlaces: 1,
-      snapToNearest: GravityForceLabBasicsConstants.MASS_POSITION_DELTA // in meters, charges will snap to the nearest 0.1 meters in model coordinates
+      snapToNearest: model.snapObjectsToNearest // in meters, charges will snap to the nearest 0.1 meters in model coordinates
     }, options );
 
     // @private