Naming

js/input/MouseWheel.js

@@ -0,0 +1,31 @@
+import Pointing from "./Pointing"
+
+export default class MouseWheel extends Pointing {
+
+    /**
+     * 
+     * @param {HTMLElement} target 
+     * @param {import("../UEBlueprint").EBlueprint} blueprint 
+     * @param {Object} options 
+     */
+    constructor(target, blueprint, options) {
+        super(target, blueprint, options)
+        this.looseTarget = options?.looseTarget ?? true
+        let self = this
+
+        this.mouseWheelHandler = function (e) {
+            e.preventDefault()
+            const location = self.getLocation(e)
+            self.wheel(Math.sign(e.deltaY), location)
+        }
+
+        this.movementSpace.addEventListener('wheel', this.mouseWheelHandler, false)
+        // Prevent movement space from being scrolled
+        this.movementSpace.parentElement?.addEventListener('wheel', e => e.preventDefault())
+    }
+
+    /* Subclasses will override the following method */
+    wheel(variation, location) {
+
+    }
+}