Controller and painting code framework

scripts/system/fingerPaint.js

@@ -12,16 +12,110 @@
     var tablet,
         button,
         BUTTON_NAME = "PAINT",
-        isFingerPainting = false;
+        isFingerPainting = false,
+        leftHand,
+        rightHand,
+        leftBrush,
+        rightBrush,
+        CONTROLLER_MAPPING_NAME = "com.highfidelity.fingerPaint";
+
+    function paintBrush(name) {
+        // Paints in 3D.
+
+        var brushName = name,
+            BRUSH_COLOR = { red: 250, green: 0, blue: 0 },
+            ERASE_SEARCH_DISTANCE = 0.1;  // m
+
+        function startLine(position, width) {
+        }
+
+        function drawLine(position, width) {
+        }
+
+        function finishLine(position, width) {
+        }
+
+        function cancelLine() {
+        }
+
+        function eraseClosestLine(position) {
+        }
+
+        function tearDown() {
+        }
+
+        return {
+            startLine: startLine,
+            drawLine: drawLine,
+            finishLine: finishLine,
+            cancelLine: cancelLine,
+            eraseClosestLine: eraseClosestLine,
+            tearDown: tearDown
+        };
+    }
+
+    function handController(name) {
+        // Translates controller data into application events.
+        var handName = name,
+            triggerPressed,     // Callback.
+            triggerPressing,    // ""
+            triggerReleased,    // ""
+            gripPressed,        // ""
+            isEnabled = false;
+
+        function setEnabled(enabled) {
+            isEnabled = enabled;
+        }
+
+        function onTriggerPress(value) {
+            if (!isEnabled) {
+                return;
+            }
+        }
+
+        function onGripPress(value) {
+            if (!isEnabled) {
+                return;
+            }
+        }
+
+        function tearDown() {
+        }
+
+        return {
+            setEnabled: setEnabled,
+            onTriggerPress: onTriggerPress,
+            onGripPress: onGripPress,
+            triggerPressed: triggerPressed,
+            triggerPressing: triggerPressing,
+            triggerReleased: triggerReleased,
+            gripPressed: gripPressed,
+            tearDown: tearDown
+        };
+    }
 
     function onButtonClicked() {
+        var wasFingerPainting = isFingerPainting;
+
         isFingerPainting = !isFingerPainting;
         button.editProperties({ isActive: isFingerPainting });
+
+        leftHand.setEnabled(isFingerPainting);
+        rightHand.setEnabled(isFingerPainting);
+
+        if (wasFingerPainting) {
+            leftBrush.cancelLine();
+            rightBrush.cancelLine();
+        }
     }
 
     function setUp() {
         tablet = Tablet.getTablet("com.highfidelity.interface.tablet.system");
-        if (tablet) {
+        if (!tablet) {
+            return;
+        }
+
+        // Tablet button.
         button = tablet.addButton({
             icon: "icons/tablet-icons/bubble-i.svg",
             activeIcon: "icons/tablet-icons/bubble-a.svg",
@@ -29,14 +123,49 @@
             isActive: isFingerPainting
         });
         button.clicked.connect(onButtonClicked);
-        }
+
+        // Connect controller API to handController objects.
+        leftHand = handController("left");
+        rightHand = handController("right");
+        var controllerMapping = Controller.newMapping(CONTROLLER_MAPPING_NAME);
+        controllerMapping.from(Controller.Standard.LT).to(leftHand.onTriggerPress);
+        controllerMapping.from(Controller.Standard.LeftGrip).to(leftHand.onGripPress);
+        controllerMapping.from(Controller.Standard.RT).to(rightHand.onTriggerPress);
+        controllerMapping.from(Controller.Standard.RightGrip).to(rightHand.onGripPress);
+        Controller.enableMapping(CONTROLLER_MAPPING_NAME);
+
+        // Connect handController outputs to paintBrush objects.
+        leftBrush = paintBrush("left");
+        leftHand.triggerPressed = leftBrush.startLine;
+        leftHand.triggerPressing = leftBrush.drawLine;
+        leftHand.trigerRelease = leftBrush.finishLine;
+        leftHand.gripPressed = leftBrush.eraseLine;
+        rightBrush = paintBrush("right");
+        rightHand.triggerPressed = rightBrush.startLine;
+        rightHand.triggerPressing = rightBrush.drawLine;
+        rightHand.trigerRelease = rightBrush.finishLine;
+        rightHand.gripPressed = rightBrush.eraseLine;
     }
 
     function tearDown() {
-        if (tablet) {
+        if (!tablet) {
+            return;
+        }
+
         button.clicked.disconnect(onButtonClicked);
         tablet.removeButton(button);
-        }
+
+        Controller.disableMapping(CONTROLLER_MAPPING_NAME);
+
+        leftBrush.tearDown();
+        leftBrush = null;
+        leftHand.tearDown();
+        leftHand = null;
+
+        rightBrush.tearDown();
+        rightBrush = null;
+        rightHand.tearDown();
+        rightHand = null;
     }
 
     setUp();