fix(touch): Allow for multi-touch in OHIF (#5099)

modes/basic-dev-mode/src/index.ts

@@ -70,11 +70,11 @@ function modeFactory({ modeConfiguration }) {
           },
           {
             toolName: toolNames.Zoom,
-            bindings: [{ mouseButton: Enums.MouseBindings.Secondary }],
+            bindings: [{ mouseButton: Enums.MouseBindings.Secondary }, { numTouchPoints: 2 }],
           },
           {
             toolName: toolNames.StackScroll,
-            bindings: [{ mouseButton: Enums.MouseBindings.Wheel }],
+            bindings: [{ mouseButton: Enums.MouseBindings.Wheel }, { numTouchPoints: 3 }],
           },
         ],
         passive: [