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Merge pull request #7809 from howard-stearns/hand-controller-pointer

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Hand controller pointer
This commit is contained in:
Brad Hefta-Gaub 2016-05-10 16:37:26 -07:00
commit 757eea16a6
6 changed files with 470 additions and 205 deletions
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8
interface/resources/controllers/vive.json
View file

@ -1,15 +1,15 @@
{
"name": "Vive to Standard",
"channels": [
{ "from": "Vive.LY", "when": "Vive.LS", "filters": "invert", "to": "Standard.LY" },
{ "from": "Vive.LX", "when": "Vive.LS", "to": "Standard.LX" },
{ "from": "Vive.LY", "when": "Vive.LS", "filters": ["invert" ,{ "type": "deadZone", "min": 0.6 }], "to": "Standard.LY" },
{ "from": "Vive.LX", "when": "Vive.LS", "filters": [{ "type": "deadZone", "min": 0.6 }], "to": "Standard.LX" },
{ "from": "Vive.LT", "to": "Standard.LT" },
{ "from": "Vive.LB", "to": "Standard.LB" },
{ "from": "Vive.LS", "to": "Standard.LS" },
{ "from": "Vive.RY", "when": "Vive.RS", "filters": "invert", "to": "Standard.RY" },
{ "from": "Vive.RX", "when": "Vive.RS", "to": "Standard.RX" },
{ "from": "Vive.RY", "when": "Vive.RS", "filters": ["invert", { "type": "deadZone", "min": 0.6 }], "to": "Standard.RY" },
{ "from": "Vive.RX", "when": "Vive.RS", "filters": [{ "type": "deadZone", "min": 0.6 }], "to": "Standard.RX" },
{ "from": "Vive.RT", "to": "Standard.RT" },
{ "from": "Vive.RB", "to": "Standard.RB" },

7
libraries/controllers/src/controllers/impl/filters/DeadZoneFilter.cpp
View file

@ -13,11 +13,12 @@
using namespace controller;
float DeadZoneFilter::apply(float value) const {
float scale = 1.0f / (1.0f - _min);
if (std::abs(value) < _min) {
float scale = ((value < 0.0f) ? -1.0f : 1.0f) / (1.0f - _min);
float magnitude = std::abs(value);
if (magnitude < _min) {
return 0.0f;
}
return (value - _min) * scale;
return (magnitude - _min) * scale;
}
bool DeadZoneFilter::parseParameters(const QJsonValue& parameters) {

17
libraries/display-plugins/src/display-plugins/CompositorHelper.cpp
View file

@ -16,6 +16,8 @@
#include <QtWidgets/QApplication>
#include <QtWidgets/QDesktopWidget>
#include <glm/gtc/type_ptr.hpp>
#include <QtGui/QWindow>
#include <QQuickWindow>
#include <ui/Menu.h>
#include <NumericalConstants.h>
@ -256,7 +258,7 @@ glm::vec2 CompositorHelper::getReticlePosition() const {
QMutexLocker locker(&_reticleLock);
return _reticlePositionInHMD;
}
return toGlm(QCursor::pos());
return toGlm(_renderingWidget->mapFromGlobal(QCursor::pos()));
}
bool CompositorHelper::getReticleOverDesktop() const {
@ -322,17 +324,8 @@ void CompositorHelper::setReticlePosition(const glm::vec2& position, bool sendFa
sendFakeMouseEvent();
}
} else {
// NOTE: This is some debugging code we will leave in while debugging various reticle movement strategies,
// remove it after we're done
const float REASONABLE_CHANGE = 50.0f;
glm::vec2 oldPos = toGlm(QCursor::pos());
auto distance = glm::distance(oldPos, position);
if (distance > REASONABLE_CHANGE) {
qDebug() << "Contrller::ScriptingInterface ---- UNREASONABLE CHANGE! distance:" <<
distance << " oldPos:" << oldPos.x << "," << oldPos.y << " newPos:" << position.x << "," << position.y;
}
QCursor::setPos(position.x, position.y);
const QPoint point(position.x, position.y);
QCursor::setPos(_renderingWidget->mapToGlobal(point));
}
}

2
scripts/defaultScripts.js
View file

@ -17,7 +17,7 @@ Script.load("system/edit.js");
Script.load("system/selectAudioDevice.js");
Script.load("system/notifications.js");
Script.load("system/controllers/handControllerGrab.js");
Script.load("system/controllers/handControllerPointer.js");
Script.load("system/controllers/squeezeHands.js");
Script.load("system/controllers/grab.js");
Script.load("system/dialTone.js");
Script.load("system/depthReticle.js");

456
scripts/system/controllers/handControllerPointer.js Normal file
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@ -0,0 +1,456 @@
"use strict";
/*jslint vars: true, plusplus: true*/
/*globals Script, Overlays, Controller, Reticle, HMD, Camera, Entities, MyAvatar, Settings, Menu, ScriptDiscoveryService, Window, Vec3, Quat, print */
//
// handControllerPointer.js
// examples/controllers
//
// Created by Howard Stearns on 2016/04/22
// 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
//
// Control the "mouse" using hand controller. (HMD and desktop.)
// For now:
// Hydra thumb button 3 is left-mouse, button 4 is right-mouse.
// A click in the center of the vive thumb pad is left mouse. Vive menu button is context menu (right mouse).
// First-person only.
// Starts right handed, but switches to whichever is free: Whichever hand was NOT most recently squeezed.
// (For now, the thumb buttons on both controllers are always on.)
// When over a HUD element, the reticle is shown where the active hand controller beam intersects the HUD.
// Otherwise, the active hand controller shows a red ball where a click will act.
//
// Bugs:
// On Windows, the upper left corner of Interface must be in the upper left corner of the screen, and the title bar must be 50px high. (System bug.)
// While hardware mouse move switches to mouse move, hardware mouse click (without amove) does not.
// UTILITIES -------------
//
// Utility to make it easier to setup and disconnect cleanly.
function setupHandler(event, handler) {
event.connect(handler);
Script.scriptEnding.connect(function () {
event.disconnect(handler);
});
}
// If some capability is not available until expiration milliseconds after the last update.
function TimeLock(expiration) {
var last = 0;
this.update = function (optionalNow) {
last = optionalNow || Date.now();
};
this.expired = function (optionalNow) {
return ((optionalNow || Date.now()) - last) > expiration;
};
}
var handControllerLockOut = new TimeLock(2000);
// Calls onFunction() or offFunction() when swtich(on), but only if it is to a new value.
function LatchedToggle(onFunction, offFunction, state) {
this.getState = function () {
return state;
};
this.setState = function (on) {
if (state === on) {
return;
}
state = on;
if (on) {
onFunction();
} else {
offFunction();
}
};
}
// VERTICAL FIELD OF VIEW ---------
//
// Cache the verticalFieldOfView setting and update it every so often.
var verticalFieldOfView, DEFAULT_VERTICAL_FIELD_OF_VIEW = 45; // degrees
function updateFieldOfView() {
verticalFieldOfView = Settings.getValue('fieldOfView') || DEFAULT_VERTICAL_FIELD_OF_VIEW;
}
// SHIMS ----------
//
var weMovedReticle = false;
function ignoreMouseActivity() {
// If we're paused, or if change in cursor position is from this script, not the hardware mouse.
if (!Reticle.allowMouseCapture) {
return true;
}
// Only we know if we moved it, which is why this script has to replace depthReticle.js
if (!weMovedReticle) {
return false;
}
weMovedReticle = false;
return true;
}
var setReticlePosition = function (point2d) {
weMovedReticle = true;
Reticle.setPosition(point2d);
};
// Generalizations of utilities that work with system and overlay elements.
function findRayIntersection(pickRay) {
// Check 3D overlays and entities. Argument is an object with origin and direction.
var result = Overlays.findRayIntersection(pickRay);
if (!result.intersects) {
result = Entities.findRayIntersection(pickRay, true);
}
return result;
}
function isPointingAtOverlay(optionalHudPosition2d) {
return Reticle.pointingAtSystemOverlay || Overlays.getOverlayAtPoint(optionalHudPosition2d || Reticle.position);
}
// Generalized HUD utilities, with or without HMD:
// These two "vars" are for documentation. Do not change their values!
var SPHERICAL_HUD_DISTANCE = 1; // meters.
var PLANAR_PERPENDICULAR_HUD_DISTANCE = SPHERICAL_HUD_DISTANCE;
function calculateRayUICollisionPoint(position, direction) {
// Answer the 3D intersection of the HUD by the given ray, or falsey if no intersection.
if (HMD.active) {
return HMD.calculateRayUICollisionPoint(position, direction);
}
// interect HUD plane, 1m in front of camera, using formula:
// scale = hudNormal dot (hudPoint - position) / hudNormal dot direction
// intersection = postion + scale*direction
var hudNormal = Quat.getFront(Camera.getOrientation());
var hudPoint = Vec3.sum(Camera.getPosition(), hudNormal); // must also scale if PLANAR_PERPENDICULAR_HUD_DISTANCE!=1
var denominator = Vec3.dot(hudNormal, direction);
if (denominator === 0) {
return null;
} // parallel to plane
var numerator = Vec3.dot(hudNormal, Vec3.subtract(hudPoint, position));
var scale = numerator / denominator;
return Vec3.sum(position, Vec3.multiply(scale, direction));
}
var DEGREES_TO_HALF_RADIANS = Math.PI / 360;
function overlayFromWorldPoint(point) {
// Answer the 2d pixel-space location in the HUD that covers the given 3D point.
// REQUIRES: that the 3d point be on the hud surface!
// Note that this is based on the Camera, and doesn't know anything about any
// ray that may or may not have been used to compute the point. E.g., the
// overlay point is NOT the intersection of some non-camera ray with the HUD.
if (HMD.active) {
return HMD.overlayFromWorldPoint(point);
}
var cameraToPoint = Vec3.subtract(point, Camera.getPosition());
var cameraX = Vec3.dot(cameraToPoint, Quat.getRight(Camera.getOrientation()));
var cameraY = Vec3.dot(cameraToPoint, Quat.getUp(Camera.getOrientation()));
var size = Controller.getViewportDimensions();
var hudHeight = 2 * Math.tan(verticalFieldOfView * DEGREES_TO_HALF_RADIANS); // must adjust if PLANAR_PERPENDICULAR_HUD_DISTANCE!=1
var hudWidth = hudHeight * size.x / size.y;
var horizontalFraction = (cameraX / hudWidth + 0.5);
var verticalFraction = 1 - (cameraY / hudHeight + 0.5);
var horizontalPixels = size.x * horizontalFraction;
var verticalPixels = size.y * verticalFraction;
return { x: horizontalPixels, y: verticalPixels };
}
// MOUSE ACTIVITY --------
//
var isSeeking = false;
var averageMouseVelocity = 0, lastIntegration = 0, lastMouse;
var WEIGHTING = 1 / 20; // simple moving average over last 20 samples
var ONE_MINUS_WEIGHTING = 1 - WEIGHTING;
var AVERAGE_MOUSE_VELOCITY_FOR_SEEK_TO = 20;
function isShakingMouse() { // True if the person is waving the mouse around trying to find it.
var now = Date.now(), mouse = Reticle.position, isShaking = false;
if (lastIntegration && (lastIntegration !== now)) {
var velocity = Vec3.length(Vec3.subtract(mouse, lastMouse)) / (now - lastIntegration);
averageMouseVelocity = (ONE_MINUS_WEIGHTING * averageMouseVelocity) + (WEIGHTING * velocity);
if (averageMouseVelocity > AVERAGE_MOUSE_VELOCITY_FOR_SEEK_TO) {
isShaking = true;
}
}
lastIntegration = now;
lastMouse = mouse;
return isShaking;
}
var NON_LINEAR_DIVISOR = 2;
var MINIMUM_SEEK_DISTANCE = 0.01;
function updateSeeking() {
if (!Reticle.visible || isShakingMouse()) {
isSeeking = true;
} // e.g., if we're about to turn it on with first movement.
if (!isSeeking) {
return;
}
averageMouseVelocity = lastIntegration = 0;
var lookAt2D = HMD.getHUDLookAtPosition2D();
if (!lookAt2D) {
print('Cannot seek without lookAt position');
return;
} // E.g., if parallel to location in HUD
var copy = Reticle.position;
function updateDimension(axis) {
var distanceBetween = lookAt2D[axis] - Reticle.position[axis];
var move = distanceBetween / NON_LINEAR_DIVISOR;
if (Math.abs(move) < MINIMUM_SEEK_DISTANCE) {
return false;
}
copy[axis] += move;
return true;
}
var okX = !updateDimension('x'), okY = !updateDimension('y'); // Evaluate both. Don't short-circuit.
if (okX && okY) {
isSeeking = false;
} else {
Reticle.setPosition(copy); // Not setReticlePosition
}
}
var mouseCursorActivity = new TimeLock(5000);
var APPARENT_MAXIMUM_DEPTH = 100.0; // this is a depth at which things all seem sufficiently distant
function updateMouseActivity(isClick) {
if (ignoreMouseActivity()) {
return;
}
var now = Date.now();
mouseCursorActivity.update(now);
if (isClick) {
return;
} // Bug: mouse clicks should keep going. Just not hand controller clicks
handControllerLockOut.update(now);
Reticle.visible = true;
}
function expireMouseCursor(now) {
if (!isPointingAtOverlay() && mouseCursorActivity.expired(now)) {
Reticle.visible = false;
}
}
function onMouseMove() {
// Display cursor at correct depth (as in depthReticle.js), and updateMouseActivity.
if (ignoreMouseActivity()) {
return;
}
if (HMD.active) { // set depth
updateSeeking();
if (isPointingAtOverlay()) {
Reticle.setDepth(SPHERICAL_HUD_DISTANCE); // NOT CORRECT IF WE SWITCH TO OFFSET SPHERE!
} else {
var result = findRayIntersection(Camera.computePickRay(Reticle.position.x, Reticle.position.y));
var depth = result.intersects ? result.distance : APPARENT_MAXIMUM_DEPTH;
Reticle.setDepth(depth);
}
}
updateMouseActivity(); // After the above, just in case the depth movement is awkward when becoming visible.
}
function onMouseClick() {
updateMouseActivity(true);
}
setupHandler(Controller.mouseMoveEvent, onMouseMove);
setupHandler(Controller.mousePressEvent, onMouseClick);
setupHandler(Controller.mouseDoublePressEvent, onMouseClick);
// CONTROLLER MAPPING ---------
//
var activeHand = Controller.Standard.RightHand;
function toggleHand() {
if (activeHand === Controller.Standard.RightHand) {
activeHand = Controller.Standard.LeftHand;
} else {
activeHand = Controller.Standard.RightHand;
}
}
// Create clickMappings as needed, on demand.
var clickMappings = {}, clickMapping, clickMapToggle;
var hardware; // undefined
function checkHardware() {
var newHardware = Controller.Hardware.Hydra ? 'Hydra' : (Controller.Hardware.Vive ? 'Vive' : null); // not undefined
if (hardware === newHardware) {
return;
}
print('Setting mapping for new controller hardware:', newHardware);
if (clickMapToggle) {
clickMapToggle.setState(false);
}
hardware = newHardware;
if (clickMappings[hardware]) {
clickMapping = clickMappings[hardware];
} else {
clickMapping = Controller.newMapping(Script.resolvePath('') + '-click-' + hardware);
Script.scriptEnding.connect(clickMapping.disable);
function mapToAction(button, action) {
clickMapping.from(Controller.Hardware[hardware][button]).peek().to(Controller.Actions[action]);
}
function makeHandToggle(button, hand, optionalWhen) {
var whenThunk = optionalWhen || function () {
return true;
};
function maybeToggle() {
if (activeHand !== Controller.Standard[hand]) {
toggleHand();
}
}
clickMapping.from(Controller.Hardware[hardware][button]).peek().when(whenThunk).to(maybeToggle);
}
function makeViveWhen(click, x, y) {
var viveClick = Controller.Hardware.Vive[click],
viveX = Controller.Standard[x], // Standard after filtering by mapping
viveY = Controller.Standard[y];
return function () {
var clickValue = Controller.getValue(viveClick);
var xValue = Controller.getValue(viveX);
var yValue = Controller.getValue(viveY);
return clickValue && !xValue && !yValue;
};
}
switch (hardware) {
case 'Hydra':
makeHandToggle('R3', 'RightHand');
makeHandToggle('L3', 'LeftHand');
mapToAction('R3', 'ReticleClick');
mapToAction('L3', 'ReticleClick');
mapToAction('R4', 'ContextMenu');
mapToAction('L4', 'ContextMenu');
break;
case 'Vive':
// When touchpad click is NOT treated as movement, treat as left click
makeHandToggle('RS', 'RightHand', makeViveWhen('RS', 'RX', 'RY'));
makeHandToggle('LS', 'LeftHand', makeViveWhen('LS', 'LX', 'LY'));
clickMapping.from(Controller.Hardware.Vive.RS).when(makeViveWhen('RS', 'RX', 'RY')).to(Controller.Actions.ReticleClick);
clickMapping.from(Controller.Hardware.Vive.LS).when(makeViveWhen('LS', 'LX', 'LY')).to(Controller.Actions.ReticleClick);
mapToAction('RightApplicationMenu', 'ContextMenu');
mapToAction('LeftApplicationMenu', 'ContextMenu');
break;
}
clickMappings[hardware] = clickMapping;
}
clickMapToggle = new LatchedToggle(clickMapping.enable, clickMapping.disable);
clickMapToggle.setState(true);
}
checkHardware();
// VISUAL AID -----------
// Same properties as handControllerGrab search sphere
var BALL_SIZE = 0.011;
var BALL_ALPHA = 0.5;
var fakeProjectionBall = Overlays.addOverlay("sphere", {
size: 5 * BALL_SIZE,
color: {red: 255, green: 10, blue: 10},
ignoreRayIntersection: true,
alpha: BALL_ALPHA,
visible: false,
solid: true,
drawInFront: true // Even when burried inside of something, show it.
});
var overlays = [fakeProjectionBall]; // If we want to try showing multiple balls and lasers.
Script.scriptEnding.connect(function () {
overlays.forEach(Overlays.deleteOverlay);
});
var visualizationIsShowing = false; // Not whether it desired, but simply whether it is. Just an optimziation.
function turnOffVisualization(optionalEnableClicks) { // because we're showing cursor on HUD
if (!optionalEnableClicks) {
expireMouseCursor();
}
if (!visualizationIsShowing) {
return;
}
visualizationIsShowing = false;
overlays.forEach(function (overlay) {
Overlays.editOverlay(overlay, {visible: false});
});
}
var MAX_RAY_SCALE = 32000; // Anything large. It's a scale, not a distance.
function updateVisualization(controllerPosition, controllerDirection, hudPosition3d, hudPosition2d) {
// Show an indication of where the cursor will appear when crossing a HUD element,
// and where in-world clicking will occur.
//
// There are a number of ways we could do this, but for now, it's a blue sphere that rolls along
// the HUD surface, and a red sphere that rolls along the 3d objects that will receive the click.
// We'll leave it to other scripts (like handControllerGrab) to show a search beam when desired.
function intersection3d(position, direction) {
// Answer in-world intersection (entity or 3d overlay), or way-out point
var pickRay = {origin: position, direction: direction};
var result = findRayIntersection(pickRay);
return result.intersects ? result.intersection : Vec3.sum(position, Vec3.multiply(MAX_RAY_SCALE, direction));
}
visualizationIsShowing = true;
// We'd rather in-world interactions be done at the termination of the hand beam
// -- intersection3d(controllerPosition, controllerDirection). Maybe have handControllerGrab
// direclty manipulate both entity and 3d overlay objects.
// For now, though, we present a false projection of the cursor onto whatever is below it. This is
// different from the hand beam termination because the false projection is from the camera, while
// the hand beam termination is from the hand.
var eye = Camera.getPosition();
var falseProjection = intersection3d(eye, Vec3.subtract(hudPosition3d, eye));
Overlays.editOverlay(fakeProjectionBall, {visible: true, position: falseProjection});
Reticle.visible = false;
return visualizationIsShowing; // In case we change caller to act conditionally.
}
// MAIN OPERATIONS -----------
//
function update() {
var now = Date.now();
if (!handControllerLockOut.expired(now)) {
return turnOffVisualization();
} // Let them use mouse it in peace.
if (!Menu.isOptionChecked("First Person")) {
return turnOffVisualization();
} // What to do? menus can be behind hand!
var controllerPose = Controller.getPoseValue(activeHand);
// Vive is effectively invalid when not in HMD
if (!controllerPose.valid || ((hardware === 'Vive') && !HMD.active)) {
return turnOffVisualization();
} // Controller is cradled.
var controllerPosition = Vec3.sum(Vec3.multiplyQbyV(MyAvatar.orientation, controllerPose.translation),
MyAvatar.position);
// This gets point direction right, but if you want general quaternion it would be more complicated:
var controllerDirection = Quat.getUp(Quat.multiply(MyAvatar.orientation, controllerPose.rotation));
var hudPoint3d = calculateRayUICollisionPoint(controllerPosition, controllerDirection);
if (!hudPoint3d) {
print('Controller is parallel to HUD');
return turnOffVisualization();
}
var hudPoint2d = overlayFromWorldPoint(hudPoint3d);
// We don't know yet if we'll want to make the cursor visble, but we need to move it to see if
// it's pointing at a QML tool (aka system overlay).
setReticlePosition(hudPoint2d);
// If there's a HUD element at the (newly moved) reticle, just make it visible and bail.
if (isPointingAtOverlay(hudPoint2d)) {
if (HMD.active) { // Doesn't hurt anything without the guard, but consider it documentation.
Reticle.depth = SPHERICAL_HUD_DISTANCE; // NOT CORRECT IF WE SWITCH TO OFFSET SPHERE!
}
Reticle.visible = true;
return turnOffVisualization(true);
}
// We are not pointing at a HUD element (but it could be a 3d overlay).
updateVisualization(controllerPosition, controllerDirection, hudPoint3d, hudPoint2d);
}
var UPDATE_INTERVAL = 20; // milliseconds. Script.update is too frequent.
var updater = Script.setInterval(update, UPDATE_INTERVAL);
Script.scriptEnding.connect(function () {
Script.clearInterval(updater);
});
// Check periodically for changes to setup.
var SETTINGS_CHANGE_RECHECK_INTERVAL = 10 * 1000; // milliseconds
function checkSettings() {
updateFieldOfView();
checkHardware();
}
checkSettings();
var settingsChecker = Script.setInterval(checkSettings, SETTINGS_CHANGE_RECHECK_INTERVAL);
Script.scriptEnding.connect(function () {
Script.clearInterval(settingsChecker);
});

185
scripts/system/depthReticle.js
View file

@ -1,185 +0,0 @@
// depthReticle.js
// examples
//
// Created by Brad Hefta-Gaub on 2/23/16.
// Copyright 2016 High Fidelity, Inc.
//
// When used in HMD, this script will make the reticle depth track to any clickable item in view.
// This script also handles auto-hiding the reticle after inactivity, as well as having the reticle
// seek the look at position upon waking up.
//
// Distributed under the Apache License, Version 2.0.
// See the accompanying file LICENSE or http://www.apache.org/licenses/LICENSE-2.0.html
//
var APPARENT_2D_OVERLAY_DEPTH = 1.0;
var APPARENT_MAXIMUM_DEPTH = 100.0; // this is a depth at which things all seem sufficiently distant
var lastDepthCheckTime = Date.now();
var desiredDepth = APPARENT_2D_OVERLAY_DEPTH;
var TIME_BETWEEN_DEPTH_CHECKS = 100;
var MINIMUM_DEPTH_ADJUST = 0.01;
var NON_LINEAR_DIVISOR = 2;
var MINIMUM_SEEK_DISTANCE = 0.01;
var lastMouseMoveOrClick = Date.now();
var lastMouseX = Reticle.position.x;
var lastMouseY = Reticle.position.y;
var HIDE_STATIC_MOUSE_AFTER = 3000; // 3 seconds
var shouldSeekToLookAt = false;
var fastMouseMoves = 0;
var averageMouseVelocity = 0;
var WEIGHTING = 1/20; // simple moving average over last 20 samples
var ONE_MINUS_WEIGHTING = 1 - WEIGHTING;
var AVERAGE_MOUSE_VELOCITY_FOR_SEEK_TO = 50;
function showReticleOnMouseClick() {
Reticle.visible = true;
lastMouseMoveOrClick = Date.now(); // move or click
}
Controller.mousePressEvent.connect(showReticleOnMouseClick);
Controller.mouseDoublePressEvent.connect(showReticleOnMouseClick);
Controller.mouseMoveEvent.connect(function(mouseEvent) {
var now = Date.now();
// if the reticle is hidden, and we're not in away mode...
if (!Reticle.visible && Reticle.allowMouseCapture) {
Reticle.visible = true;
if (HMD.active) {
shouldSeekToLookAt = true;
}
} else {
// even if the reticle is visible, if we're in HMD mode, and the person is moving their mouse quickly (shaking it)
// then they are probably looking for it, and we should move into seekToLookAt mode
if (HMD.active && !shouldSeekToLookAt && Reticle.allowMouseCapture) {
var dx = Reticle.position.x - lastMouseX;
var dy = Reticle.position.y - lastMouseY;
var dt = Math.max(1, (now - lastMouseMoveOrClick)); // mSecs since last mouse move
var mouseMoveDistance = Math.sqrt((dx*dx) + (dy*dy));
var mouseVelocity = mouseMoveDistance / dt;
averageMouseVelocity = (ONE_MINUS_WEIGHTING * averageMouseVelocity) + (WEIGHTING * mouseVelocity);
if (averageMouseVelocity > AVERAGE_MOUSE_VELOCITY_FOR_SEEK_TO) {
shouldSeekToLookAt = true;
}
}
}
lastMouseMoveOrClick = now;
lastMouseX = mouseEvent.x;
lastMouseY = mouseEvent.y;
});
function seekToLookAt() {
// if we're currently seeking the lookAt move the mouse toward the lookat
if (shouldSeekToLookAt) {
averageMouseVelocity = 0; // reset this, these never count for movement...
var lookAt2D = HMD.getHUDLookAtPosition2D();
var currentReticlePosition = Reticle.position;
var distanceBetweenX = lookAt2D.x - Reticle.position.x;
var distanceBetweenY = lookAt2D.y - Reticle.position.y;
var moveX = distanceBetweenX / NON_LINEAR_DIVISOR;
var moveY = distanceBetweenY / NON_LINEAR_DIVISOR;
var newPosition = { x: Reticle.position.x + moveX, y: Reticle.position.y + moveY };
var closeEnoughX = false;
var closeEnoughY = false;
if (moveX < MINIMUM_SEEK_DISTANCE) {
newPosition.x = lookAt2D.x;
closeEnoughX = true;
}
if (moveY < MINIMUM_SEEK_DISTANCE) {
newPosition.y = lookAt2D.y;
closeEnoughY = true;
}
Reticle.position = newPosition;
if (closeEnoughX && closeEnoughY) {
shouldSeekToLookAt = false;
}
}
}
function autoHideReticle() {
var now = Date.now();
// sometimes we don't actually get mouse move messages (for example, if the focus has been set
// to an overlay or web page 'overlay') in but the mouse can still be moving, and we don't want
// to autohide in these cases, so we will take this opportunity to also check if the reticle
// position has changed.
if (lastMouseX != Reticle.position.x || lastMouseY != Reticle.position.y) {
lastMouseMoveOrClick = now;
lastMouseX = Reticle.position.x;
lastMouseY = Reticle.position.y;
}
// if we haven't moved in a long period of time, and we're not pointing at some
// system overlay (like a window), then hide the reticle
if (Reticle.visible && !Reticle.pointingAtSystemOverlay) {
var timeSinceLastMouseMove = now - lastMouseMoveOrClick;
if (timeSinceLastMouseMove > HIDE_STATIC_MOUSE_AFTER) {
Reticle.visible = false;
}
}
}
function checkReticleDepth() {
var now = Date.now();
var timeSinceLastDepthCheck = now - lastDepthCheckTime;
if (timeSinceLastDepthCheck > TIME_BETWEEN_DEPTH_CHECKS && Reticle.visible) {
var newDesiredDepth = desiredDepth;
lastDepthCheckTime = now;
var reticlePosition = Reticle.position;
// first check the 2D Overlays
if (Reticle.pointingAtSystemOverlay || Overlays.getOverlayAtPoint(reticlePosition)) {
newDesiredDepth = APPARENT_2D_OVERLAY_DEPTH;
} else {
var pickRay = Camera.computePickRay(reticlePosition.x, reticlePosition.y);
// Then check the 3D overlays
var result = Overlays.findRayIntersection(pickRay);
if (!result.intersects) {
// finally check the entities
result = Entities.findRayIntersection(pickRay, true);
}
// If either the overlays or entities intersect, then set the reticle depth to
// the distance of intersection
if (result.intersects) {
newDesiredDepth = result.distance;
} else {
// if nothing intersects... set the depth to some sufficiently large depth
newDesiredDepth = APPARENT_MAXIMUM_DEPTH;
}
}
// If the desired depth has changed, reset our fade start time
if (desiredDepth != newDesiredDepth) {
desiredDepth = newDesiredDepth;
}
}
}
function moveToDesiredDepth() {
// move the reticle toward the desired depth
if (desiredDepth != Reticle.depth) {
// cut distance between desiredDepth and current depth in half until we're close enough
var distanceToAdjustThisCycle = (desiredDepth - Reticle.depth) / NON_LINEAR_DIVISOR;
if (Math.abs(distanceToAdjustThisCycle) < MINIMUM_DEPTH_ADJUST) {
newDepth = desiredDepth;
} else {
newDepth = Reticle.depth + distanceToAdjustThisCycle;
}
Reticle.setDepth(newDepth);
}
}
Script.update.connect(function(deltaTime) {
autoHideReticle(); // auto hide reticle for desktop or HMD mode
if (HMD.active) {
seekToLookAt(); // handle moving the reticle toward the look at
checkReticleDepth(); // make sure reticle is at correct depth
moveToDesiredDepth(); // move the fade the reticle to the desired depth
}
});