From c986d55d8b9050eda0c1a48031ccd62d5f3ac5e1 Mon Sep 17 00:00:00 2001
From: amantley <amantley@googlemail.com>
Date: Thu, 6 Sep 2018 13:18:54 -0700
Subject: [PATCH] removed step script from repo

---
 scripts/developer/objectOrientedStep.js | 688 ------------------------
 1 file changed, 688 deletions(-)
 delete mode 100644 scripts/developer/objectOrientedStep.js

diff --git a/scripts/developer/objectOrientedStep.js b/scripts/developer/objectOrientedStep.js
deleted file mode 100644
index a5c27e36b9..0000000000
--- a/scripts/developer/objectOrientedStep.js
+++ /dev/null
@@ -1,688 +0,0 @@
-/* jslint bitwise: true */
-
-/* global Script, Vec3, MyAvatar, Tablet, Messages, Quat, 
-DebugDraw, Mat4, Entities, Xform, Controller, Camera, console, document*/
-
-Script.registerValue("STEPAPP", true);
-var CENTIMETERSPERMETER = 100.0;
-var LEFT = 0;
-var RIGHT = 1;
-var INCREASING = 1.0;
-var DECREASING = -1.0;
-var DEFAULT_AVATAR_HEIGHT = 1.64;
-var TABLET_BUTTON_NAME = "STEP";
-var CHANGE_OF_BASIS_ROTATION = { x: 0, y: 1, z: 0, w: 0 };
-// in meters (mostly)
-var DEFAULT_ANTERIOR = 0.04;
-var DEFAULT_POSTERIOR = 0.06;
-var DEFAULT_LATERAL = 0.10;
-var DEFAULT_HEIGHT_DIFFERENCE = 0.02;
-var DEFAULT_ANGULAR_VELOCITY = 0.3;
-var DEFAULT_HAND_VELOCITY = 0.4;
-var DEFAULT_ANGULAR_HAND_VELOCITY = 3.3;
-var DEFAULT_HEAD_VELOCITY = 0.14;
-var DEFAULT_LEVEL_PITCH = 7;
-var DEFAULT_LEVEL_ROLL = 7;
-var DEFAULT_DIFF = 0.0;
-var DEFAULT_DIFF_EULERS = { x: 0.0, y: 0.0, z: 0.0 };
-var DEFAULT_HIPS_POSITION;
-var DEFAULT_HEAD_POSITION; 
-var DEFAULT_TORSO_LENGTH; 
-var SPINE_STRETCH_LIMIT = 0.02;
-
-var VELOCITY_EPSILON = 0.02;
-var AVERAGING_RATE = 0.03;
-var HEIGHT_AVERAGING_RATE = 0.01;
-var STEP_TIME_SECS = 0.2;
-var MODE_SAMPLE_LENGTH = 100;
-var RESET_MODE = false;
-var HEAD_TURN_THRESHOLD = 25.0;
-var NO_SHARED_DIRECTION = -0.98;
-var LOADING_DELAY = 500;
-var FAILSAFE_TIMEOUT = 2.5;
-
-var debugDrawBase = true;
-var activated = false;
-var documentLoaded = false;
-var failsafeFlag = false;
-var failsafeSignalTimer = -1.0;
-var stepTimer = -1.0;
-
-
-var modeArray = new Array(MODE_SAMPLE_LENGTH);
-var modeHeight = -10.0;
-
-var handPosition;
-var handOrientation;
-var hands = [];
-var hipToHandAverage = [];
-var handDotHead = [];
-var headAverageOrientation = MyAvatar.orientation;
-var headPoseAverageOrientation = { x: 0, y: 0, z: 0, w: 1 };
-var averageHeight = 1.0;
-var headEulers = { x: 0.0, y: 0.0, z: 0.0 };
-var headAverageEulers = { x: 0.0, y: 0.0, z: 0.0 };
-var headAveragePosition = { x: 0, y: 0.4, z: 0 };
-var frontLeft = { x: -DEFAULT_LATERAL, y: 0, z: -DEFAULT_ANTERIOR };
-var frontRight = { x: DEFAULT_LATERAL, y: 0, z: -DEFAULT_ANTERIOR };
-var backLeft = { x: -DEFAULT_LATERAL, y: 0, z: DEFAULT_POSTERIOR };
-var backRight = { x: DEFAULT_LATERAL, y: 0, z: DEFAULT_POSTERIOR };
-
-
-// define state readings constructor
-function StateReading(headPose, rhandPose, lhandPose, backLength, diffFromMode, diffFromAverageHeight, diffFromAveragePosition,
-    diffFromAverageEulers) {
-    this.headPose = headPose;
-    this.rhandPose = rhandPose;
-    this.lhandPose = lhandPose;
-    this.backLength = backLength;
-    this.diffFromMode = diffFromMode;
-    this.diffFromAverageHeight = diffFromAverageHeight;
-    this.diffFromAveragePosition = diffFromAveragePosition;
-    this.diffFromAverageEulers = diffFromAverageEulers;
-}
-
-// define current state readings object for holding tracker readings and current differences from averages
-var currentStateReadings = new StateReading(Controller.getPoseValue(Controller.Standard.Head),
-    Controller.getPoseValue(Controller.Standard.RightHand), Controller.getPoseValue(Controller.Standard.LeftHand),
-    DEFAULT_TORSO_LENGTH, DEFAULT_DIFF, DEFAULT_DIFF, DEFAULT_DIFF, DEFAULT_DIFF_EULERS);
-
-// declare the checkbox constructor
-function AppCheckbox(type,id,eventType,isChecked) {
-    this.type = type;
-    this.id = id;
-    this.eventType = eventType;
-    this.data = {value: isChecked};
-}
-
-// define the checkboxes in the html file
-var usingAverageHeight = new AppCheckbox("checkboxtick", "runningAverageHeightCheck", "onRunningAverageHeightCheckBox",
-    false);
-var usingModeHeight = new AppCheckbox("checkboxtick","modeCheck","onModeCheckBox",true);
-var usingBaseOfSupport = new AppCheckbox("checkboxtick","baseOfSupportCheck","onBaseOfSupportCheckBox",true);
-var usingAverageHeadPosition = new AppCheckbox("checkboxtick", "headAveragePositionCheck", "onHeadAveragePositionCheckBox",
-    false);
-
-var checkBoxArray = new Array(usingAverageHeight,usingModeHeight,usingBaseOfSupport,usingAverageHeadPosition);
-
-// declare the html slider constructor
-function AppProperty(name, type, eventType, signalType, setFunction, initValue, convertToThreshold, convertToSlider, signalOn) {
-    this.name = name;
-    this.type = type;
-    this.eventType = eventType;
-    this.signalType = signalType;
-    this.setValue = setFunction;
-    this.value = initValue;
-    this.get = function () {
-        return this.value;
-    };
-    this.convertToThreshold = convertToThreshold;
-    this.convertToSlider = convertToSlider;
-    this.signalOn = signalOn;
-}
-
-// define the sliders
-var frontBaseProperty = new AppProperty("#anteriorBase-slider", "slider", "onAnteriorBaseSlider", "frontSignal",
-    setAnteriorDistance, DEFAULT_ANTERIOR, function (num) {
-        return convertToMeters(num);
-    }, function (num) {
-        return convertToCentimeters(num);
-    },true);
-var backBaseProperty = new AppProperty("#posteriorBase-slider", "slider", "onPosteriorBaseSlider", "backSignal",
-    setPosteriorDistance, DEFAULT_POSTERIOR, function (num) {
-        return convertToMeters(num);
-    }, function (num) {
-        return convertToCentimeters(num);
-    }, true);
-var lateralBaseProperty = new AppProperty("#lateralBase-slider", "slider", "onLateralBaseSlider", "lateralSignal",
-    setLateralDistance, DEFAULT_LATERAL, function (num) {
-        return convertToMeters(num);
-    }, function (num) {
-        return convertToCentimeters(num);
-    }, true);
-var headAngularVelocityProperty = new AppProperty("#angularVelocityHead-slider", "slider", "onAngularVelocitySlider",
-    "angularHeadSignal", setAngularThreshold, DEFAULT_ANGULAR_VELOCITY, function (num) {
-        var base = 4;
-        var shift = 2;
-        return convertExponential(base, num, DECREASING, shift);
-    }, function (num) {
-        var base = 4;
-        var shift = 2;
-        return convertLog(base, num, DECREASING, shift);
-    }, true);
-var heightDifferenceProperty = new AppProperty("#heightDifference-slider", "slider", "onHeightDifferenceSlider", "heightSignal",
-    setHeightThreshold, DEFAULT_HEIGHT_DIFFERENCE, function (num) {
-        return convertToMeters(-num);
-    }, function (num) {
-        return convertToCentimeters(-num);
-    }, true);
-var handsVelocityProperty = new AppProperty("#handsVelocity-slider", "slider", "onHandsVelocitySlider", "handVelocitySignal",
-    setHandVelocityThreshold, DEFAULT_HAND_VELOCITY, function (num) {
-        return num;
-    }, function (num) {
-        return num;
-    }, true);
-var handsAngularVelocityProperty = new AppProperty("#handsAngularVelocity-slider", "slider", "onHandsAngularVelocitySlider",
-    "handAngularSignal", setHandAngularVelocityThreshold, DEFAULT_ANGULAR_HAND_VELOCITY, function (num) {
-        var base = 7;
-        var shift = 2;
-        return convertExponential(base, num, DECREASING, shift);
-    }, function (num) {
-        var base = 7;
-        var shift = 2;
-        return convertLog(base, num, DECREASING, shift);
-    }, true);
-var headVelocityProperty = new AppProperty("#headVelocity-slider", "slider", "onHeadVelocitySlider", "headVelocitySignal",
-    setHeadVelocityThreshold, DEFAULT_HEAD_VELOCITY, function (num) {
-        var base = 2;
-        var shift = 0;
-        return convertExponential(base, num, INCREASING, shift);
-    }, function (num) {
-        var base = 2;
-        var shift = 0;
-        return convertLog(base, num, INCREASING, shift);
-    }, true);
-var headPitchProperty = new AppProperty("#headPitch-slider", "slider", "onHeadPitchSlider", "headPitchSignal",
-    setHeadPitchThreshold, DEFAULT_LEVEL_PITCH, function (num) {
-        var base = 2.5;
-        var shift = 5;
-        return convertExponential(base, num, DECREASING, shift);
-    }, function (num) {
-        var base = 2.5;
-        var shift = 5;
-        return convertLog(base, num, DECREASING, shift);
-    }, true);
-var headRollProperty = new AppProperty("#headRoll-slider", "slider", "onHeadRollSlider", "headRollSignal", setHeadRollThreshold,
-    DEFAULT_LEVEL_ROLL, function (num) {
-        var base = 2.5;
-        var shift = 5;
-        return convertExponential(base, num, DECREASING, shift);
-    }, function (num) {
-        var base = 2.5;
-        var shift = 5;
-        return convertLog(base, num, DECREASING, shift);
-    }, true);
-
-var propArray = new Array(frontBaseProperty, backBaseProperty, lateralBaseProperty, headAngularVelocityProperty,
-    heightDifferenceProperty, handsVelocityProperty, handsAngularVelocityProperty, headVelocityProperty, headPitchProperty,
-    headRollProperty);
-
-// var HTML_URL = Script.resolvePath("http://hifi-content.s3.amazonaws.com/angus/stepApp/stepApp.html");
-var HTML_URL = Script.resolvePath("http://hifi-content.s3.amazonaws.com/angus/stepApp/stepAppExtra.html");
-var tablet = Tablet.getTablet("com.highfidelity.interface.tablet.system");
-
-function manageClick() {
-    if (activated) {
-        tablet.gotoHomeScreen();
-    } else {
-        tablet.gotoWebScreen(HTML_URL);
-    }
-}
-
-var tabletButton = tablet.addButton({
-    text: TABLET_BUTTON_NAME,
-    icon: Script.resolvePath("http://hifi-content.s3.amazonaws.com/angus/stepApp/foot.svg"),
-    activeIcon: Script.resolvePath("http://hifi-content.s3.amazonaws.com/angus/stepApp/foot.svg")
-});
-
-function drawBase() {
-    // transform corners into world space, for rendering.
-    var worldPointLf = Vec3.sum(MyAvatar.position,Vec3.multiplyQbyV(MyAvatar.orientation, frontLeft));
-    var worldPointRf = Vec3.sum(MyAvatar.position,Vec3.multiplyQbyV(MyAvatar.orientation, frontRight));
-    var worldPointLb = Vec3.sum(MyAvatar.position,Vec3.multiplyQbyV(MyAvatar.orientation, backLeft));
-    var worldPointRb = Vec3.sum(MyAvatar.position,Vec3.multiplyQbyV(MyAvatar.orientation, backRight));
-
-    var GREEN = { r: 0, g: 1, b: 0, a: 1 };
-    // draw border
-    DebugDraw.drawRay(worldPointLf, worldPointRf, GREEN);
-    DebugDraw.drawRay(worldPointRf, worldPointRb, GREEN);
-    DebugDraw.drawRay(worldPointRb, worldPointLb, GREEN);
-    DebugDraw.drawRay(worldPointLb, worldPointLf, GREEN);
-}
-
-function onKeyPress(event) {
-    if (event.text === "'") {
-        // when the sensors are reset, then reset the mode.
-        RESET_MODE = false;
-    }
-}
-
-function onWebEventReceived(msg) {
-    var message = JSON.parse(msg);
-    print(" we have a message from html dialog " + message.type);
-    propArray.forEach(function (prop) {
-        if (prop.eventType === message.type) {
-            prop.setValue(prop.convertToThreshold(message.data.value));
-            print("message from " + prop.name);
-            // break;
-        }
-    });
-    checkBoxArray.forEach(function(cbox) {
-        if (cbox.eventType === message.type) {
-            cbox.data.value = message.data.value;
-            // break;
-        }
-    });
-    if (message.type === "onCreateStepApp") {
-        print("document loaded");
-        documentLoaded = true;
-        Script.setTimeout(initAppForm, LOADING_DELAY);
-    }
-}
-
-function initAppForm() {
-    print("step app is loaded: " + documentLoaded);
-    if (documentLoaded === true) {
-        propArray.forEach(function (prop) {
-            tablet.emitScriptEvent(JSON.stringify({
-                "type": "trigger",
-                "id": prop.signalType,
-                "data": { "value": "green" }
-            }));
-            tablet.emitScriptEvent(JSON.stringify({
-                "type": "slider",
-                "id": prop.name,
-                "data": { "value": prop.convertToSlider(prop.value) }
-            }));
-        });
-        checkBoxArray.forEach(function (cbox) {
-            tablet.emitScriptEvent(JSON.stringify({
-                "type": "checkboxtick",
-                "id": cbox.id,
-                "data": { "value": cbox.data.value }
-            }));
-        });
-    }
-}
-
-function updateSignalColors() {
-
-    // force the updates by running the threshold comparisons
-    withinBaseOfSupport(currentStateReadings.headPose.translation);
-    withinThresholdOfStandingHeightMode(currentStateReadings.diffFromMode);
-    headAngularVelocityBelowThreshold(currentStateReadings.headPose.angularVelocity);
-    handDirectionMatchesHeadDirection(currentStateReadings.lhandPose, currentStateReadings.rhandPose);
-    handAngularVelocityBelowThreshold(currentStateReadings.lhandPose, currentStateReadings.rhandPose);
-    headVelocityGreaterThanThreshold(Vec3.length(currentStateReadings.headPose.velocity));
-    headMovedAwayFromAveragePosition(currentStateReadings.diffFromAveragePosition);
-    headLowerThanHeightAverage(currentStateReadings.diffFromAverageHeight);
-    isHeadLevel(currentStateReadings.diffFromAverageEulers);
-
-    propArray.forEach(function (prop) {
-        if (prop.signalOn) {
-            tablet.emitScriptEvent(JSON.stringify({ "type": "trigger", "id": prop.signalType, "data": { "value": "green" } }));
-        } else {
-            tablet.emitScriptEvent(JSON.stringify({ "type": "trigger", "id": prop.signalType, "data": { "value": "red" } }));
-        }
-    });
-}
-
-function onScreenChanged(type, url) {     
-    print("Screen changed");
-    if (type === "Web" && url === HTML_URL) {
-        if (!activated) {
-            // hook up to event bridge
-            tablet.webEventReceived.connect(onWebEventReceived);
-            print("after connect web event");
-            MyAvatar.hmdLeanRecenterEnabled = false;
-            
-        }
-        activated = true;
-    } else {
-        if (activated) {
-            // disconnect from event bridge
-            tablet.webEventReceived.disconnect(onWebEventReceived);
-            documentLoaded = false;
-        }
-        activated = false;
-    }
-}
-
-function getLog(x, y) {
-    return Math.log(y) / Math.log(x);
-}
-
-function noConversion(num) {
-    return num;
-}
-
-function convertLog(base, num, direction, shift) {
-    return direction * getLog(base, (num + 1.0)) + shift;
-}
-
-function convertExponential(base, num, direction, shift) {
-    return Math.pow(base, (direction*num + shift)) - 1.0;
-}
-
-function convertToCentimeters(num) {
-    return num * CENTIMETERSPERMETER;
-}
-
-function convertToMeters(num) {
-    print("convert to meters " + num);
-    return num / CENTIMETERSPERMETER;
-}
-
-function isInsideLine(a, b, c) {
-    return (((b.x - a.x)*(c.z - a.z) - (b.z - a.z)*(c.x - a.x)) > 0);
-}
-
-function setAngularThreshold(num) {
-    headAngularVelocityProperty.value = num;
-    print("angular threshold " + headAngularVelocityProperty.get());
-}
-
-function setHeadRollThreshold(num) {
-    headRollProperty.value = num;
-    print("head roll threshold " + headRollProperty.get());
-}
-
-function setHeadPitchThreshold(num) {
-    headPitchProperty.value = num;
-    print("head pitch threshold " + headPitchProperty.get());
-}
-
-function setHeightThreshold(num) {
-    heightDifferenceProperty.value = num;
-    print("height threshold " + heightDifferenceProperty.get());
-}
-
-function setLateralDistance(num) {
-    lateralBaseProperty.value = num;
-    frontLeft.x = -lateralBaseProperty.get();
-    frontRight.x = lateralBaseProperty.get();
-    backLeft.x = -lateralBaseProperty.get();
-    backRight.x = lateralBaseProperty.get();
-    print("lateral distance  " + lateralBaseProperty.get());
-}
-
-function setAnteriorDistance(num) {
-    frontBaseProperty.value = num;
-    frontLeft.z = -frontBaseProperty.get();
-    frontRight.z = -frontBaseProperty.get();
-    print("anterior distance " + frontBaseProperty.get());
-}
-
-function setPosteriorDistance(num) {
-    backBaseProperty.value = num;
-    backLeft.z = backBaseProperty.get();
-    backRight.z = backBaseProperty.get();
-    print("posterior distance " + backBaseProperty.get());
-}
-
-function setHandAngularVelocityThreshold(num) {
-    handsAngularVelocityProperty.value = num;
-    print("hand angular velocity threshold " + handsAngularVelocityProperty.get());
-}
-
-function setHandVelocityThreshold(num) {
-    handsVelocityProperty.value = num;
-    print("hand velocity threshold " + handsVelocityProperty.get());
-}
-
-function setHeadVelocityThreshold(num) {
-    headVelocityProperty.value = num;
-    print("headvelocity threshold " + headVelocityProperty.get());
-}
-
-function withinBaseOfSupport(pos) {
-    var userScale = 1.0;
-    frontBaseProperty.signalOn = !(isInsideLine(Vec3.multiply(userScale, frontLeft), Vec3.multiply(userScale, frontRight), pos));
-    backBaseProperty.signalOn = !(isInsideLine(Vec3.multiply(userScale, backRight), Vec3.multiply(userScale, backLeft), pos));
-    lateralBaseProperty.signalOn = !(isInsideLine(Vec3.multiply(userScale, frontRight), Vec3.multiply(userScale, backRight), pos)
-        && isInsideLine(Vec3.multiply(userScale, backLeft), Vec3.multiply(userScale, frontLeft), pos));
-    return (!frontBaseProperty.signalOn && !backBaseProperty.signalOn && !lateralBaseProperty.signalOn);
-}
-
-function withinThresholdOfStandingHeightMode(heightDiff) {
-    if (usingModeHeight.data.value) {
-        heightDifferenceProperty.signalOn = heightDiff < heightDifferenceProperty.get();
-        return heightDifferenceProperty.signalOn;
-    } else {
-        return true;
-    }
-}
-
-function headAngularVelocityBelowThreshold(headAngularVelocity) {
-    var angVel = Vec3.length({ x: headAngularVelocity.x, y: 0, z: headAngularVelocity.z });
-    headAngularVelocityProperty.signalOn = angVel < headAngularVelocityProperty.get();
-    return headAngularVelocityProperty.signalOn;
-}
-
-function handDirectionMatchesHeadDirection(lhPose, rhPose) {
-    handsVelocityProperty.signalOn = ((handsVelocityProperty.get() < NO_SHARED_DIRECTION) ||
-        ((!lhPose.valid || ((handDotHead[LEFT] > handsVelocityProperty.get()) &&
-        (Vec3.length(lhPose.velocity) > VELOCITY_EPSILON))) &&
-        (!rhPose.valid || ((handDotHead[RIGHT] > handsVelocityProperty.get()) &&
-        (Vec3.length(rhPose.velocity) > VELOCITY_EPSILON)))));
-    return handsVelocityProperty.signalOn;
-}
-
-function handAngularVelocityBelowThreshold(lhPose, rhPose) {
-    var xzRHandAngularVelocity = Vec3.length({ x: rhPose.angularVelocity.x, y: 0.0, z: rhPose.angularVelocity.z });
-    var xzLHandAngularVelocity = Vec3.length({ x: lhPose.angularVelocity.x, y: 0.0, z: lhPose.angularVelocity.z });
-    handsAngularVelocityProperty.signalOn = ((!rhPose.valid ||(xzRHandAngularVelocity < handsAngularVelocityProperty.get())) 
-        && (!lhPose.valid || (xzLHandAngularVelocity < handsAngularVelocityProperty.get())));
-    return handsAngularVelocityProperty.signalOn;
-}
-
-function headVelocityGreaterThanThreshold(headVel) {
-    headVelocityProperty.signalOn = (headVel > headVelocityProperty.get()) || (headVelocityProperty.get() < VELOCITY_EPSILON);
-    return headVelocityProperty.signalOn;
-}
-
-function headMovedAwayFromAveragePosition(headDelta) {
-    return !withinBaseOfSupport(headDelta) || !usingAverageHeadPosition.data.value;
-}
-
-function headLowerThanHeightAverage(heightDiff) {
-    if (usingAverageHeight.data.value) {
-        print("head lower than height average");
-        heightDifferenceProperty.signalOn = heightDiff < heightDifferenceProperty.get();
-        return heightDifferenceProperty.signalOn;
-    } else {
-        return true;
-    }
-}
-
-function isHeadLevel(diffEulers) {
-    headRollProperty.signalOn = Math.abs(diffEulers.z) < headRollProperty.get();
-    headPitchProperty.signalOn = Math.abs(diffEulers.x) < headPitchProperty.get();
-    return (headRollProperty.signalOn && headPitchProperty.signalOn);
-}
-
-function findAverage(arr) {
-    var sum = arr.reduce(function (acc, val) {
-        return acc + val;
-    },0);
-    return sum / arr.length;
-}
-
-function addToModeArray(arr,num) {
-    for (var i = 0 ;i < (arr.length - 1); i++) {
-        arr[i] = arr[i+1];
-    }
-    arr[arr.length - 1] = (Math.floor(num*CENTIMETERSPERMETER))/CENTIMETERSPERMETER;
-}
-
-function findMode(ary, currentMode, backLength, defaultBack, currentHeight) {
-    var numMapping = {};
-    var greatestFreq = 0;
-    var mode;
-    ary.forEach(function (number) {
-        numMapping[number] = (numMapping[number] || 0) + 1;
-        if ((greatestFreq < numMapping[number]) || ((numMapping[number] === MODE_SAMPLE_LENGTH) && (number > currentMode) )) {
-            greatestFreq = numMapping[number];
-            mode = number;
-        }
-    });
-    if (mode > currentMode) {
-        return Number(mode);    
-    } else {
-        if (!RESET_MODE && HMD.active) {
-            print("resetting the mode............................................. ");
-            print("resetting the mode............................................. ");
-            RESET_MODE = true;
-            var correction = 0.02;
-            return currentHeight - correction;
-        } else {
-            return currentMode; 
-        }
-    }    
-}
-
-function update(dt) {
-    if (debugDrawBase) {
-        drawBase();
-    }
-    //  Update current state information
-    currentStateReadings.headPose = Controller.getPoseValue(Controller.Standard.Head);
-    currentStateReadings.rhandPose = Controller.getPoseValue(Controller.Standard.RightHand);
-    currentStateReadings.lhandPose = Controller.getPoseValue(Controller.Standard.LeftHand);
-
-    // back length
-    var headMinusHipLean = Vec3.subtract(currentStateReadings.headPose.translation, DEFAULT_HIPS_POSITION);
-    currentStateReadings.backLength = Vec3.length(headMinusHipLean);
-    // print("back length and default " + currentStateReadings.backLength + " " + DEFAULT_TORSO_LENGTH);
-
-    // mode height
-    addToModeArray(modeArray, currentStateReadings.headPose.translation.y);
-    modeHeight = findMode(modeArray, modeHeight, currentStateReadings.backLength, DEFAULT_TORSO_LENGTH,
-        currentStateReadings.headPose.translation.y);
-    currentStateReadings.diffFromMode = modeHeight - currentStateReadings.headPose.translation.y;
-
-    // hand direction
-    var leftHandLateralPoseVelocity = currentStateReadings.lhandPose.velocity;
-    leftHandLateralPoseVelocity.y = 0.0;
-    var rightHandLateralPoseVelocity = currentStateReadings.rhandPose.velocity;
-    rightHandLateralPoseVelocity.y = 0.0;
-    var headLateralPoseVelocity = currentStateReadings.headPose.velocity;
-    headLateralPoseVelocity.y = 0.0;
-    handDotHead[LEFT] = Vec3.dot(Vec3.normalize(leftHandLateralPoseVelocity), Vec3.normalize(headLateralPoseVelocity));
-    handDotHead[RIGHT] = Vec3.dot(Vec3.normalize(rightHandLateralPoseVelocity), Vec3.normalize(headLateralPoseVelocity));
-    
-    // average head position
-    headAveragePosition = Vec3.mix(headAveragePosition, currentStateReadings.headPose.translation, AVERAGING_RATE);
-    currentStateReadings.diffFromAveragePosition = Vec3.subtract(currentStateReadings.headPose.translation,
-        headAveragePosition);
-
-    // average height
-    averageHeight = currentStateReadings.headPose.translation.y * HEIGHT_AVERAGING_RATE +
-        averageHeight * (1.0 - HEIGHT_AVERAGING_RATE);
-    currentStateReadings.diffFromAverageHeight = Math.abs(currentStateReadings.headPose.translation.y - averageHeight);
-
-    // eulers diff
-    headEulers = Quat.safeEulerAngles(currentStateReadings.headPose.rotation);
-    headAverageOrientation = Quat.slerp(headAverageOrientation, currentStateReadings.headPose.rotation, AVERAGING_RATE);
-    headAverageEulers = Quat.safeEulerAngles(headAverageOrientation);
-    currentStateReadings.diffFromAverageEulers = Vec3.subtract(headAverageEulers, headEulers);
-
-    // headpose rig space is for determining when to recenter rotation.
-    var headPoseRigSpace = Quat.multiply(CHANGE_OF_BASIS_ROTATION, currentStateReadings.headPose.rotation);
-    headPoseAverageOrientation = Quat.slerp(headPoseAverageOrientation, headPoseRigSpace, AVERAGING_RATE);
-    var headPoseAverageEulers = Quat.safeEulerAngles(headPoseAverageOrientation);
-
-    // make the signal colors reflect the current thresholds that have been crossed
-    updateSignalColors();
-
-    SPINE_STRETCH_LIMIT = (0.04) * DEFAULT_TORSO_LENGTH * MyAvatar.scale;
-
-    //print("the spine stretch limit is " + SPINE_STRETCH_LIMIT + " head avatar space is " + currentStateReadings.headPose.translation.y);
-    //print("the current back length is " + currentStateReadings.backLength + " " + DEFAULT_TORSO_LENGTH);
-    //  Conditions for taking a step. 
-    // 1. off the base of support. front, lateral, back edges.
-    // 2. head is not lower than the height mode value by more than the maxHeightChange tolerance
-    // 3. the angular velocity of the head is not greater than the threshold value
-    //    ie this reflects the speed the head is rotating away from having up = (0,1,0) in Avatar frame..
-    // 4. the hands velocity vector has the same direction as the head, within the given tolerance
-    //    the tolerance is an acos value, -1 means the hands going in any direction will not block translating
-    //    up to 1 where the hands velocity direction must exactly match that of the head. -1 threshold disables this condition.
-    // 5. the angular velocity xz magnitude for each hand is below the threshold value
-    //    ie here this reflects the speed that each hand is rotating away from having up = (0,1,0) in Avatar frame.
-    // 6. head velocity is below step threshold
-    // 7. head has moved further than the threshold from the running average position of the head.
-    // 8. head height is not lower than the running average head height with a difference of maxHeightChange.
-    // 9. head's rotation in avatar space is not pitching or rolling greater than the pitch or roll thresholds
-    if (!withinBaseOfSupport(currentStateReadings.headPose.translation) &&
-        withinThresholdOfStandingHeightMode(currentStateReadings.diffFromMode) &&
-        headAngularVelocityBelowThreshold(currentStateReadings.headPose.angularVelocity) &&
-        handDirectionMatchesHeadDirection(currentStateReadings.lhandPose, currentStateReadings.rhandPose) &&
-        handAngularVelocityBelowThreshold(currentStateReadings.lhandPose, currentStateReadings.rhandPose) &&  
-        headVelocityGreaterThanThreshold(Vec3.length(currentStateReadings.headPose.velocity)) &&
-        headMovedAwayFromAveragePosition(currentStateReadings.diffFromAveragePosition) && 
-        headLowerThanHeightAverage(currentStateReadings.diffFromAverageHeight) &&
-        isHeadLevel(currentStateReadings.diffFromAverageEulers)) {
-
-        if (stepTimer < 0.0) { //!MyAvatar.isRecenteringHorizontally()
-            print("trigger recenter========================================================");
-            MyAvatar.triggerHorizontalRecenter();
-            stepTimer = STEP_TIME_SECS;
-        }
-    } else if ((currentStateReadings.backLength > (DEFAULT_TORSO_LENGTH + SPINE_STRETCH_LIMIT)) &&
-        (failsafeSignalTimer < 0.0) && HMD.active) {
-        // do the failsafe recenter.
-        // failsafeFlag stops repeated setting of failsafe button color.
-        // RESET_MODE false forces a reset of the height
-        RESET_MODE = false;
-        failsafeFlag = true;
-        failsafeSignalTimer = FAILSAFE_TIMEOUT;
-        MyAvatar.triggerHorizontalRecenter();
-        tablet.emitScriptEvent(JSON.stringify({ "type": "failsafe", "id": "failsafeSignal", "data": { "value": "green" } }));
-        // in fail safe we debug print the values that were blocking us.
-        print("failsafe debug---------------------------------------------------------------");
-        propArray.forEach(function (prop) {
-            print(prop.name);
-            if (!prop.signalOn) {
-                print(prop.signalType + " contributed to failsafe call");
-            }
-        });
-        print("end failsafe debug---------------------------------------------------------------");
-
-    }
-    
-    if ((failsafeSignalTimer < 0.0) && failsafeFlag) {
-        failsafeFlag = false;
-        tablet.emitScriptEvent(JSON.stringify({ "type": "failsafe", "id": "failsafeSignal", "data": { "value": "orange" } }));
-    }
-
-    stepTimer -= dt;
-    failsafeSignalTimer -= dt;
-
-    if (!HMD.active) {
-        RESET_MODE = false;
-    }
-
-    if (Math.abs(headPoseAverageEulers.y) > HEAD_TURN_THRESHOLD) {
-        //  Turn feet
-        // MyAvatar.triggerRotationRecenter();
-        // headPoseAverageOrientation = { x: 0, y: 0, z: 0, w: 1 };
-    }  
-}
-    
-function shutdownTabletApp() {
-    // GlobalDebugger.stop();
-    tablet.removeButton(tabletButton);
-    if (activated) {
-        tablet.webEventReceived.disconnect(onWebEventReceived);
-        tablet.gotoHomeScreen();
-    }
-    tablet.screenChanged.disconnect(onScreenChanged);
-}
-
-tabletButton.clicked.connect(manageClick);
-tablet.screenChanged.connect(onScreenChanged);
-
-Script.setTimeout(function() {
-    DEFAULT_HIPS_POSITION = MyAvatar.getAbsoluteDefaultJointTranslationInObjectFrame(MyAvatar.getJointIndex("Hips"));
-    DEFAULT_HEAD_POSITION = MyAvatar.getAbsoluteDefaultJointTranslationInObjectFrame(MyAvatar.getJointIndex("Head"));
-    DEFAULT_TORSO_LENGTH = Vec3.length(Vec3.subtract(DEFAULT_HEAD_POSITION, DEFAULT_HIPS_POSITION));
-    SPINE_STRETCH_LIMIT = (0.04) * DEFAULT_TORSO_LENGTH * MyAvatar.scale;
-},(4*LOADING_DELAY));
-
-Script.update.connect(update);
-Controller.keyPressEvent.connect(onKeyPress);
-Script.scriptEnding.connect(function () {
-    MyAvatar.hmdLeanRecenterEnabled = true;
-    Script.update.disconnect(update);
-    shutdownTabletApp();
-});