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securityCamera.js - Camera Entity example

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Thijs Wenker 2015-11-04 20:23:03 +01:00
parent 184f793cdd
commit 128a0c2397
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//
// securityCamera.js
// examples/example
//
// Created by Thijs Wenker on November 4, 2015
// Copyright 2015 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
//
const CAMERA_OFFSET = {x: 0, y: 4, z: -14};
const LOOKAT_START_OFFSET = {x: -10, y: 0, z: 14};
const LOOKAT_END_OFFSET = {x: 10, y: 0, z: 14};
var lookatTargets = [Vec3.sum(MyAvatar.position, LOOKAT_START_OFFSET), Vec3.sum(MyAvatar.position, LOOKAT_END_OFFSET)];
var currentTarget = 0;
var forward = true;
var oldCameraMode = Camera.mode;
var cameraLookAt = function(cameraPos, lookAtPos) {
var lookAtRaw = Quat.lookAt(cameraPos, lookAtPos, Vec3.UP);
lookAtRaw.w = -lookAtRaw.w;
return lookAtRaw;
};
cameraEntity = Entities.addEntity({
type: "Camera",
position: Vec3.sum(MyAvatar.position, CAMERA_OFFSET)
});
Camera.mode = "camera entity";
Camera.cameraEntity = cameraEntity;
Script.update.connect(function(deltaTime) {
var cameraProperties = Entities.getEntityProperties(cameraEntity, ["position", "rotation"]);
var targetOrientation = cameraLookAt(cameraProperties.position, lookatTargets[currentTarget]);
if (Math.abs(targetOrientation.x - cameraProperties.rotation.x) < 0.01 &&
Math.abs(targetOrientation.y - cameraProperties.rotation.y) < 0.01 &&
Math.abs(targetOrientation.z - cameraProperties.rotation.z) < 0.01 &&
Math.abs(targetOrientation.w - cameraProperties.rotation.w) < 0.01
) {
currentTarget = (currentTarget + 1) % lookatTargets.length;
return;
}
Entities.editEntity(cameraEntity, {rotation: Quat.mix(cameraProperties.rotation, targetOrientation, deltaTime / 3)});
});
Script.scriptEnding.connect(function() {
Entities.deleteEntity(cameraEntity);
Camera.mode = oldCameraMode;
Camera.cameraEntity = null;
});