add caption to photon source (i.e. laser), see #52

phetsims · Nov 13, 2024 · aab7ef2 · aab7ef2
1 parent a08b078
commit aab7ef2
Show file tree

Hide file tree

Showing 3 changed files with 10 additions and 1 deletion.
diff --git a/js/QuantumMeasurementStrings.ts b/js/QuantumMeasurementStrings.ts
@@ -53,6 +53,7 @@ type StringsType = {
   'propagationIntoPageStringProperty': LocalizedStringProperty;
   'classicalCoinStringProperty': LocalizedStringProperty;
   'PStringProperty': LocalizedStringProperty;
+  'photonSourceStringProperty': LocalizedStringProperty;
   'preparedStateStringProperty': LocalizedStringProperty;
   'probabilityStringProperty': LocalizedStringProperty;
   'probabilityOfValuePatternStringProperty': LocalizedStringProperty;

diff --git a/js/photons/view/LaserNode.ts b/js/photons/view/LaserNode.ts
@@ -58,8 +58,13 @@ export default class LaserNode extends Node {
       centerY: modelViewTransform.modelToViewY( model.position.y ),
       tandem: providedOptions.tandem.createTandem( 'laserPointerNode' )
     } );
+    const caption = new Text( QuantumMeasurementStrings.photonSourceStringProperty, {
+      font: new PhetFont( 12 ),
+      centerX: laserPointerNode.centerX,
+      top: laserPointerNode.bottom + 5
+    } );
 
-    const nodeChildren: Node[] = [ laserPointerNode ];
+    const nodeChildren: Node[] = [ laserPointerNode, caption ];
 
     // If the laser is in many-photon mode, we need a slider to control the rate of photon emission.  And a label for
     // the rate.

diff --git a/quantum-measurement-strings_en.json b/quantum-measurement-strings_en.json
@@ -110,6 +110,9 @@
   "P": {
     "value": "P"
   },
+  "photonSource": {
+    "value": "Photon Source"
+  },
   "preparedState": {
     "value": "Prepared State"
   },