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more fixes to third person tablet usage.

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This commit is contained in:
Anthony J. Thibault 2017-01-31 18:22:38 -08:00
parent 008a58f9d7
commit 3c04f54e75
1 changed files with 15 additions and 16 deletions
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31
scripts/system/libraries/WebTablet.js
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@ -24,6 +24,7 @@ var CAMERA_MATRIX = -7;
var ROT_Y_180 = {x: 0, y: 1, z: 0, w: 0};
var TABLET_TEXTURE_RESOLUTION = { x: 480, y: 706 };
var INCHES_TO_METERS = 1 / 39.3701;
var NO_HANDS = -1;
var TABLET_URL = Script.resourcesPath() + "meshes/tablet-with-home-button.fbx";
@ -35,18 +36,21 @@ var TABLET_MODEL_PATH = "http://hifi-content.s3.amazonaws.com/alan/dev/tablet-wi
// * position - position in front of the user
// * rotation - rotation of entity so it faces the user.
function calcSpawnInfo(hand, height) {
var noHands = -1;
var finalPosition;
if (HMD.active && hand !== noHands) {
var headPos = (HMD.active && Camera.mode === "first person") ? HMD.position : Camera.position;
var headRot = (HMD.active && Camera.mode === "first person") ? HMD.orientation : Camera.orientation;
if (HMD.active && hand !== NO_HANDS) {
var handController = getControllerWorldLocation(hand, true);
var controllerPosition = handController.position;
// compute the angle of the chord with length (height / 2)
var theta = Math.asin(height / (2 * Vec3.distance(HMD.position, controllerPosition)));
var theta = Math.asin(height / (2 * Vec3.distance(headPos, controllerPosition)));
// then we can use this angle to rotate the vector between the HMD position and the center of the tablet.
// this vector, u, will become our new look at direction.
var d = Vec3.normalize(Vec3.subtract(HMD.position, controllerPosition));
var d = Vec3.normalize(Vec3.subtract(headPos, controllerPosition));
var w = Vec3.normalize(Vec3.cross(Y_AXIS, d));
var q = Quat.angleAxis(theta * (180 / Math.PI), w);
var u = Vec3.multiplyQbyV(q, d);
@ -64,8 +68,8 @@ function calcSpawnInfo(hand, height) {
rotation: lookAtRot
};
} else {
var front = Quat.getFront(Camera.orientation);
finalPosition = Vec3.sum(Camera.position, Vec3.multiply(0.6, front));
var front = Quat.getFront(headRot);
finalPosition = Vec3.sum(headPos, Vec3.multiply(0.6, front));
var orientation = Quat.lookAt({x: 0, y: 0, z: 0}, front, {x: 0, y: 1, z: 0});
return {
position: finalPosition,
@ -238,7 +242,6 @@ WebTablet.prototype.destroy = function () {
WebTablet.prototype.geometryChanged = function (geometry) {
if (!HMD.active) {
var NO_HANDS = -1;
var tabletProperties = {};
// compute position, rotation & parentJointIndex of the tablet
this.calculateTabletAttachmentProperties(NO_HANDS, tabletProperties);
@ -294,7 +297,6 @@ WebTablet.prototype.onHmdChanged = function () {
Controller.mouseReleaseEvent.connect(this.myMouseReleaseEvent);
}
var NO_HANDS = -1;
var tabletProperties = {};
// compute position, rotation & parentJointIndex of the tablet
this.calculateTabletAttachmentProperties(NO_HANDS, tabletProperties);
@ -377,17 +379,14 @@ WebTablet.prototype.mousePressEvent = function (event) {
};
WebTablet.prototype.cameraModeChanged = function (newMode) {
// reposition the tablet, after a small delay.
// reposition the tablet.
// This allows HMD.position to reflect the new camera mode.
if (HMD.active) {
var self = this;
Script.setTimeout(function () {
var NO_HANDS = -1;
var tabletProperties = {};
// compute position, rotation & parentJointIndex of the tablet
self.calculateTabletAttachmentProperties(NO_HANDS, tabletProperties);
Entities.editEntity(self.tabletEntityID, tabletProperties);
}, 10);
var tabletProperties = {};
// compute position, rotation & parentJointIndex of the tablet
self.calculateTabletAttachmentProperties(NO_HANDS, tabletProperties);
Entities.editEntity(self.tabletEntityID, tabletProperties);
}
};