controllerHandshake.js

// 
//   ControllerHandshake.js 
// 
//  Created by Philip Rosedale on April 28, 2017
//  Copyright 2016 High Fidelity, Inc.
//
//  Distributed under the Apache License, Version 2.0.
//  See the accompanying file LICENSE or http://www.apache.org/licenses/LICENSE-2.0.html
//
//  This script makes the left and right hands 'mirror' each other, as a function of how much their triggers are pulled. 
// 

Script.include("/~/system/libraries/Xform.js");

var MAPPING_LEFT = "left";
var MAPPING_RIGHT = "right";
var mappingLeft = Controller.newMapping(MAPPING_LEFT);
var mappingRight = Controller.newMapping(MAPPING_RIGHT);
var MAX_HANDSHAKE_AVATAR_DISTANCE = 2.0;

var leftHandshakeJoint = "LeftHandIndex4";
var rightHandshakeJoint = "RightHandIndex4";
var targetLeftHand, targetRightHand;

function worldToAvatar(vec) {
    worldToAvatarXform = new Xform(MyAvatar.orientation, MyAvatar.position).inv();
    return worldToAvatarXform.xformPoint(vec);
}

function getClosestHands() {
    //
    //  Look at the other avatars, find the hand closest to this one
    //
    var closest = MAX_HANDSHAKE_AVATAR_DISTANCE;
    var found = false;
    var closestAvatar;

    var avatars = AvatarList.getAvatarIdentifiers();
    avatars.forEach(function (id) {
        var avatar = AvatarList.getAvatar(id);
        if (MyAvatar.sessionUUID !== avatar.sessionUUID) {
            var hand = avatar.position;
            var distance = Vec3.distance(MyAvatar.position, avatar.position);
            if (distance < closest) {
                closest = distance;
                closestAvatar = avatar;
                found = true;
            }
        }
    });
    if (found) {
	
	var worldToAvatarXform = new Xform(closestAvatar.orientation, closestAvatar.position);
        targetLeftHand = worldToAvatar(worldToAvatarXform.xformPoint(closestAvatar.getAbsoluteJointTranslationInObjectFrame(-4)));

        //targetLeftHand = worldToAvatar(closestAvatar.getJointPosition(leftHandshakeJoint));
        targetRightHand = worldToAvatar(worldToAvatarXform.xformPoint(closestAvatar.getAbsoluteJointTranslationInObjectFrame(-3)));
    }
};

/*
function updateHaptics() {
    var leftTrigger = Controller.getValue(Controller.Standard.LT);
    var rightTrigger = Controller.getValue(Controller.Standard.RT);
    if (leftTrigger > 0.8) {

    }
}*/

mappingLeft.from(function() {
 	if (Controller.Hardware.OculusTouch) {	
		var leftController = Controller.getPoseValue(Controller.Hardware.OculusTouch.LeftHand);
	}
    	else { 
        var leftController = Controller.getPoseValue(Controller.Hardware.Vive.LeftHand);
    }
	var trigger = Controller.getValue(Controller.Standard.LT);

    var pose = {
            translation: Vec3.mix(leftController.translation, targetLeftHand, trigger/2),
            rotation: leftController.rotation,
            velocity: leftController.velocity,
            angularVelocity: leftController.angularVelocity
        };

    return pose;
}).debug(true).to(Controller.Standard.LeftHand); 

mappingRight.from(function() {
	if (Controller.Hardware.OculusTouch) {
	var rightController = Controller.getPoseValue(Controller.Hardware.OculusTouch.RightHand);
	}
    else {
        var rightController = Controller.getPoseValue(Controller.Hardware.Vive.RightHand);
    }
	var trigger = Controller.getValue(Controller.Standard.RT);

    var pose = {
            translation: Vec3.mix(rightController.translation, targetRightHand, trigger/2),
            rotation: rightController.rotation,
            velocity: rightController.velocity,
            angularVelocity: rightController.angularVelocity
        };

    return pose;
}).debug(true).to(Controller.Standard.RightHand); 

Controller.enableMapping(MAPPING_LEFT);
Controller.enableMapping(MAPPING_RIGHT);

Script.update.connect(function() {
    getClosestHands();
    //updateHaptics();
});

Script.scriptEnding.connect(function(){
    mappingLeft.disable();
    mappingRight.disable();
});