fix sound for Focal Length control, #259

phetsims · Mar 7, 2022 · 858a87a · 858a87a
1 parent 800a878
commit 858a87a
Showing 1 changed file with 6 additions and 1 deletion.
diff --git a/js/common/view/FocalLengthControl.ts b/js/common/view/FocalLengthControl.ts
@@ -59,7 +59,12 @@ class FocalLengthControl extends NumberControl {
         constrainValue: ( value: number ) => Utils.roundToInterval( value, GOConstants.FOCAL_LENGTH_SLIDER_STEP ),
         keyboardStep: GOConstants.FOCAL_LENGTH_KEYBOARD_STEP, // used by all alternative-input devices
         shiftKeyboardStep: GOConstants.FOCAL_LENGTH_SHIFT_KEYBOARD_STEP, // finer grain, used by keyboard only
-        pageKeyboardStep: GOConstants.FOCAL_LENGTH_PAGE_KEYBOARD_STEP // coarser grain, used by keyboard only
+        pageKeyboardStep: GOConstants.FOCAL_LENGTH_PAGE_KEYBOARD_STEP, // coarser grain, used by keyboard only
+
+        // generate a sound for each slider step
+        soundGeneratorOptions: {
+          numberOfMiddleThresholds: focalLengthMagnitudeProperty.range!.getLength() / GOConstants.FOCAL_LENGTH_SLIDER_STEP - 1
+        }
       }
     } );