Rename TrackablePointer.totalDistance to TrackablePointer.movementLength

docs/api/trackable-pointer.md

 
 The elapsed time, in seconds, since the tracking of this pointer began.
 
-### totalDistance
+### movementLength
 
-`pointer.totalDistance: number, read-only`
+`pointer.movementLength: number, read-only`
 
-How much this pointer has moved, in space units, since its tracking began. You can get the average speed of motion by calculating the ratio `totalDistance / duration`.
+How much this pointer has moved, in space units, since its tracking began. You can get the average speed of motion by calculating the ratio `movementLength / duration`.
 
 ### isPrimary
 

src/trackers/pointer-tracker/pointer-tracker.ts

             const duration = previous ? previous.duration + deltaTime : 0;
 
             // determine how much this pointer has moved since its tracking began
-            const totalDistance = previous ? previous.totalDistance + deltaPosition.length() : 0;
+            const movementLength = previous ? previous.movementLength + deltaPosition.length() : 0;
 
             // determine whether or not this is the primary pointer for this type
             const isPrimary = event.isPrimary;
 
             // we create new trackable instances on each frame;
             // these will be exported and consumed by the user
-            this._newPointers.set(id, { id, phase, position, deltaPosition, initialPosition, velocity, duration, totalDistance, isPrimary, kind });
+            this._newPointers.set(id, { id, phase, position, deltaPosition, initialPosition, velocity, duration, movementLength, isPrimary, kind });
 
         }
 

src/trackers/pointer-tracker/trackable-pointer.ts

     readonly duration: number;
 
     /** how much this pointer has moved, in space units, since its tracking began */
-    readonly totalDistance: number;
+    readonly movementLength: number;
 
     /** whether or not this is the primary pointer for this type */
     readonly isPrimary: boolean;