Files
gods-eye-view/src/ui/cameraOrientationControls.test.mjs
T
513dc87a0e feat(hud): Cyber HUD theme with GPU contact sonar (#706)
Add the opt-in Cyber HUD layout with coordinated map and cockpit panel
styling, GPU-only contact sonar (rings, range, power, opacity, sector) with
native-rendering fallback, and set_cyber_sonar voice controls. Sonar visual
style inspired by kk376's tactical naval sonar (#214).

Co-authored-by: Sameh Khamis <[email protected]>
Co-Authored-By: Claude Opus 5.5 (1M context) <[email protected]>
2026-09-23 20:31:56 -07:00

691 lines
24 KiB
JavaScript

import assert from 'node:assert/strict';
import test from 'node:test';
import * as Cesium from 'cesium';
import {
OBLIQUE_PITCH,
STRAIGHT_DOWN_PITCH,
bindCameraOrientationControls,
createCameraOrientationAnimator,
pickViewTarget,
readCameraTargetFrame,
resetCameraNorth,
toggleCameraTilt,
} from './cameraOrientationControls.js';
import { NavigationController } from './navigationController.js';
function createViewer({ cameraPosition, target, pickPosition = null } = {}) {
const calls = [];
const changed = new Cesium.Event();
const surface = target || Cesium.Cartesian3.fromDegrees(0, 0, 0);
const position = cameraPosition || Cesium.Cartesian3.fromDegrees(0, 0, 1_000);
const camera = {
positionWC: position,
directionWC: new Cesium.Cartesian3(-1, 0, 0),
upWC: new Cesium.Cartesian3(0, 0, 1),
heading: Cesium.Math.toRadians(90),
changed,
pickEllipsoid: () => surface,
getPickRay: () => ({}),
lookAt(targetValue, offset) {
calls.push({ type: 'lookAt', target: targetValue, offset });
},
lookAtTransform(transform) {
calls.push({ type: 'lookAtTransform', transform });
},
setView(view) {
calls.push({ type: 'setView', view });
},
};
const viewer = {
camera,
scene: {
canvas: { clientWidth: 1_200, clientHeight: 800 },
pickPositionSupported: Boolean(pickPosition),
pickPosition: pickPosition || (() => null),
globe: { pick: () => surface },
requestRender: () => calls.push({ type: 'requestRender' }),
},
};
return { viewer, calls, target: surface };
}
class FakeButton extends EventTarget {
constructor() {
super();
this.attributes = new Map();
this.style = {
setProperty: (name, value) => this.attributes.set(name, value),
};
}
setAttribute(name, value) {
this.attributes.set(name, String(value));
}
getAttribute(name) {
return this.attributes.get(name);
}
click() {
this.dispatchEvent(new Event('click'));
}
}
/**
* A real Cesium camera attached to a minimal offscreen scene.
*
* The fake above records what lookAt was asked for but never moves, so it
* cannot show whether a frame written into the camera reads back as the same
* frame. These cases need the production math on both sides.
*/
function createRealCamera() {
const scene = {
canvas: { clientWidth: 1200, clientHeight: 800, width: 1200, height: 800 },
drawingBufferWidth: 1200,
drawingBufferHeight: 800,
mapProjection: new Cesium.GeographicProjection(Cesium.Ellipsoid.WGS84),
globe: { ellipsoid: Cesium.Ellipsoid.WGS84 },
mapMode2D: Cesium.MapMode2D.INFINITE_SCROLL,
// setView converts a world-space direction/up pair into the local frame
// only in 3D, and the camera derives heading/pitch the same way, so the
// scene mode is load-bearing here rather than decoration.
mode: Cesium.SceneMode.SCENE3D,
pixelRatio: 1,
};
const camera = new Cesium.Camera(scene);
scene.camera = camera;
return { camera, scene };
}
/** A viewer whose center pick is a fixed ground point and whose camera is real. */
function createRealViewer(target) {
const { camera, scene } = createRealCamera();
scene.pickPositionSupported = false;
scene.pickPosition = () => null;
scene.globe.pick = () => target;
scene.requestRender = () => {};
// The binding drives the needle from the scene's per-frame signal, not from
// `camera.changed`, so the fixture has to carry one.
scene.preRender = new Cesium.Event();
camera.getPickRay = () => ({});
return { viewer: { camera, scene }, target };
}
/** Place a real camera in an orbit around `target` and release the frame. */
function orbit(viewer, target, headingDeg, pitchRad, range) {
viewer.camera.lookAt(
target,
new Cesium.HeadingPitchRange(
Cesium.Math.toRadians(headingDeg),
pitchRad,
range,
),
);
viewer.camera.lookAtTransform(Cesium.Matrix4.IDENTITY);
}
const AUSTIN_GROUND = Cesium.Cartesian3.fromDegrees(-97.7431, 30.2672, 0);
test('a heading written into a real camera reads back as the same heading', () => {
// One oblique heading per quadrant, plus the cardinals, at pitches a user
// reaches with the tilt control.
for (const headingDeg of [0, 30, 90, 135, 180, 225, 270, 315, 350]) {
for (const pitchDeg of [-25, -40, -65]) {
const { viewer } = createRealViewer(AUSTIN_GROUND);
viewer.camera.lookAt(
AUSTIN_GROUND,
new Cesium.HeadingPitchRange(
Cesium.Math.toRadians(headingDeg),
Cesium.Math.toRadians(pitchDeg),
4000,
),
);
viewer.camera.lookAtTransform(Cesium.Matrix4.IDENTITY);
const frame = readCameraTargetFrame(viewer);
assert.ok(frame, `no frame at ${headingDeg}/${pitchDeg}`);
const readDeg = Cesium.Math.toDegrees(frame.heading);
assert.ok(
Math.abs(((readDeg - headingDeg + 540) % 360) - 180) < 0.01,
`heading ${headingDeg} deg at pitch ${pitchDeg} read back as ${readDeg.toFixed(2)} deg`,
);
assert.ok(
Math.abs(Cesium.Math.toDegrees(frame.pitch) - pitchDeg) < 0.01,
`pitch ${pitchDeg} read back as ${Cesium.Math.toDegrees(frame.pitch).toFixed(2)}`,
);
assert.ok(Math.abs(frame.range - 4000) < 1, `range ${frame.range}`);
}
}
});
test('north-up really points a real camera north from every quadrant', () => {
for (const headingDeg of [30, 135, 225, 315]) {
const { viewer } = createRealViewer(AUSTIN_GROUND);
viewer.camera.lookAt(
AUSTIN_GROUND,
new Cesium.HeadingPitchRange(
Cesium.Math.toRadians(headingDeg),
Cesium.Math.toRadians(-40),
4000,
),
);
viewer.camera.lookAtTransform(Cesium.Matrix4.IDENTITY);
assert.equal(
resetCameraNorth(viewer),
true,
`reset failed at ${headingDeg}`,
);
const after = readCameraTargetFrame(viewer);
assert.ok(after, `no frame after reset at ${headingDeg}`);
const readDeg = Cesium.Math.toDegrees(after.heading);
assert.ok(
Math.min(readDeg, 360 - readDeg) < 0.01,
`north-up from ${headingDeg} deg left the camera at ${readDeg.toFixed(2)} deg`,
);
assert.ok(
Math.abs(Cesium.Math.toDegrees(after.pitch) + 40) < 0.01,
'north-up must not change the pitch',
);
assert.ok(
Math.abs(after.range - 4000) < 1,
'north-up must not change the range',
);
}
});
test('tilt moves a real camera between the two pitches and keeps target and range', () => {
const { viewer } = createRealViewer(AUSTIN_GROUND);
viewer.camera.lookAt(
AUSTIN_GROUND,
new Cesium.HeadingPitchRange(
Cesium.Math.toRadians(215),
STRAIGHT_DOWN_PITCH,
3000,
),
);
viewer.camera.lookAtTransform(Cesium.Matrix4.IDENTITY);
const first = toggleCameraTilt(viewer);
assert.deepEqual(first, { tilted: true, pitch: OBLIQUE_PITCH });
const tilted = readCameraTargetFrame(viewer);
assert.ok(Math.abs(tilted.pitch - OBLIQUE_PITCH) < 1e-6);
assert.ok(Math.abs(tilted.range - 3000) < 1, `range ${tilted.range}`);
assert.ok(
Math.abs(Cesium.Math.toDegrees(tilted.heading) - 215) < 0.01,
'tilt must not rotate the map',
);
// Releasing the orbit frame must leave the camera pointing at the same
// ground, not merely standing in the right place.
const toTarget = Cesium.Cartesian3.normalize(
Cesium.Cartesian3.subtract(
AUSTIN_GROUND,
viewer.camera.positionWC,
new Cesium.Cartesian3(),
),
new Cesium.Cartesian3(),
);
const offBy = Cesium.Math.toDegrees(
Math.acos(
Cesium.Math.clamp(
Cesium.Cartesian3.dot(viewer.camera.directionWC, toTarget),
-1,
1,
),
),
);
assert.ok(
offBy < 0.05,
`camera points ${offBy.toFixed(2)} deg away from its target`,
);
const second = toggleCameraTilt(viewer);
assert.deepEqual(second, { tilted: false, pitch: STRAIGHT_DOWN_PITCH });
const down = readCameraTargetFrame(viewer);
assert.ok(Math.abs(down.pitch - STRAIGHT_DOWN_PITCH) < 1e-6);
assert.ok(Math.abs(down.range - 3000) < 1);
});
test('tilt alternates at globe range, not only at map range', () => {
// The canonical full-globe view. The camera's own pitch here is tens of
// degrees away from the orbit pitch, so a control reading the camera would
// command oblique twice in a row and the map would never come back level.
for (const range of [3_000, 250_000, 18_000_000]) {
const { viewer } = createRealViewer(AUSTIN_GROUND);
orbit(viewer, AUSTIN_GROUND, 0, STRAIGHT_DOWN_PITCH, range);
const first = toggleCameraTilt(viewer);
assert.deepEqual(
first,
{ tilted: true, pitch: OBLIQUE_PITCH },
`first click at ${range} m must tilt`,
);
const second = toggleCameraTilt(viewer);
assert.deepEqual(
second,
{ tilted: false, pitch: STRAIGHT_DOWN_PITCH },
`second click at ${range} m must level (camera pitch reads ${Cesium.Math.toDegrees(viewer.camera.pitch).toFixed(1)} deg)`,
);
const third = toggleCameraTilt(viewer);
assert.deepEqual(
third,
{ tilted: true, pitch: OBLIQUE_PITCH },
`third click at ${range} m must tilt again`,
);
}
});
test('the button shows the state the next click will produce, at every range', () => {
for (const range of [3_000, 18_000_000]) {
const { viewer } = createRealViewer(AUSTIN_GROUND);
orbit(viewer, AUSTIN_GROUND, 0, STRAIGHT_DOWN_PITCH, range);
const tiltButton = new FakeButton();
const controls = bindCameraOrientationControls({
viewer,
elements: { tiltButton, northButton: new FakeButton() },
runNavigation: (_noun, navigate) => navigate(),
});
assert.equal(
tiltButton.getAttribute('aria-pressed'),
'false',
`straight down at ${range} m must not read as tilted`,
);
tiltButton.click();
assert.equal(
tiltButton.getAttribute('aria-pressed'),
'true',
`after one click at ${range} m the button must read tilted`,
);
// And the exact refresh that runs when the camera settles must agree.
controls.refreshTilt();
assert.equal(
tiltButton.getAttribute('aria-pressed'),
'true',
`the settled state at ${range} m must agree with the commanded one`,
);
controls.destroy();
}
});
test('the needle follows a rotation too small for the camera-changed threshold', () => {
const { viewer } = createRealViewer(AUSTIN_GROUND);
orbit(viewer, AUSTIN_GROUND, 0, Cesium.Math.toRadians(-80), 5_000);
const northButton = new FakeButton();
const controls = bindCameraOrientationControls({
viewer,
elements: { tiltButton: new FakeButton(), northButton },
runNavigation: (_noun, navigate) => navigate(),
});
assert.equal(northButton.getAttribute('--camera-heading'), '0deg');
// Ten degrees is far below Cesium's default percentageChanged, so
// `camera.changed` may never fire for it; the per-frame signal must.
let changedFired = 0;
viewer.camera.changed.addEventListener(() => {
changedFired += 1;
});
orbit(viewer, AUSTIN_GROUND, 10, Cesium.Math.toRadians(-80), 5_000);
viewer.scene.preRender.raiseEvent();
assert.equal(
northButton.getAttribute('--camera-heading'),
'10deg',
`needle must follow a 10 degree rotation (camera.changed fired ${changedFired} time(s))`,
);
orbit(viewer, AUSTIN_GROUND, 13, Cesium.Math.toRadians(-80), 5_000);
viewer.scene.preRender.raiseEvent();
assert.equal(northButton.getAttribute('--camera-heading'), '13deg');
controls.destroy();
});
test('north-up indicator follows real heading including the 360-degree seam', () => {
const { viewer } = createRealViewer(AUSTIN_GROUND);
const northButton = new FakeButton();
const controls = bindCameraOrientationControls({
viewer,
elements: { northButton },
runNavigation: (_noun, navigate) => navigate(),
});
for (const [heading, active] of [
[0, true],
[15, false],
[359.8, true],
[359, false],
[360, true],
[90, false],
]) {
orbit(viewer, AUSTIN_GROUND, heading, Cesium.Math.toRadians(-80), 5_000);
viewer.scene.preRender.raiseEvent();
assert.equal(
northButton.getAttribute('data-north-up'),
String(active),
`heading ${heading}`,
);
}
controls.destroy();
});
test('a settled camera writes nothing, and teardown releases every signal', () => {
const { viewer } = createRealViewer(AUSTIN_GROUND);
orbit(viewer, AUSTIN_GROUND, 0, Cesium.Math.toRadians(-80), 5_000);
const tiltButton = new FakeButton();
const northButton = new FakeButton();
let writes = 0;
const count = (element) => {
const setAttribute = element.setAttribute.bind(element);
const setProperty = element.style.setProperty.bind(element.style);
element.setAttribute = (name, value) => {
writes += 1;
setAttribute(name, value);
};
element.style.setProperty = (name, value) => {
writes += 1;
setProperty(name, value);
};
};
count(tiltButton);
count(northButton);
const preRenderBefore = viewer.scene.preRender.numberOfListeners;
const moveEndBefore = viewer.camera.moveEnd.numberOfListeners;
const controls = bindCameraOrientationControls({
viewer,
elements: { tiltButton, northButton },
runNavigation: (_noun, navigate) => navigate(),
});
assert.equal(viewer.scene.preRender.numberOfListeners, preRenderBefore + 1);
assert.equal(viewer.camera.moveEnd.numberOfListeners, moveEndBefore + 1);
writes = 0;
for (let i = 0; i < 60; i += 1) viewer.scene.preRender.raiseEvent();
assert.equal(writes, 0, '60 frames of a settled camera write nothing');
orbit(viewer, AUSTIN_GROUND, 47, Cesium.Math.toRadians(-80), 5_000);
viewer.scene.preRender.raiseEvent();
assert.ok(writes > 0, 'a rotated camera updates the needle');
writes = 0;
for (let i = 0; i < 20; i += 1) viewer.scene.preRender.raiseEvent();
assert.equal(writes, 0, 'and then goes quiet again');
controls.destroy();
assert.equal(viewer.scene.preRender.numberOfListeners, preRenderBefore);
assert.equal(viewer.camera.moveEnd.numberOfListeners, moveEndBefore);
writes = 0;
orbit(viewer, AUSTIN_GROUND, 120, Cesium.Math.toRadians(-80), 5_000);
viewer.scene.preRender.raiseEvent();
viewer.camera.moveEnd.raiseEvent();
tiltButton.click();
assert.equal(writes, 0, 'a destroyed binding writes nothing');
});
test('a sky-facing camera yields no frame and both actions decline', () => {
const { camera, scene } = createRealCamera();
scene.pickPositionSupported = false;
scene.pickPosition = () => null;
scene.globe.pick = () => undefined;
scene.requestRender = () => {};
camera.getPickRay = () => ({});
camera.pickEllipsoid = () => undefined;
const viewer = { camera, scene };
assert.equal(readCameraTargetFrame(viewer), null);
assert.equal(toggleCameraTilt(viewer), false);
assert.equal(resetCameraNorth(viewer), false);
});
test('center picking prefers terrain over the ellipsoid and falls through an invalid depth hit', () => {
const invalid = new Cesium.Cartesian3(Number.NaN, 0, 0);
const terrain = Cesium.Cartesian3.fromDegrees(-97.74, 30.27, 400);
const sea = Cesium.Cartesian3.fromDegrees(-97.74, 30.27, 0);
const { viewer } = createViewer({ pickPosition: () => invalid });
viewer.scene.globe.pick = () => terrain;
viewer.camera.pickEllipsoid = () => sea;
assert.equal(
pickViewTarget(viewer),
terrain,
'the rendered ground wins over sea level',
);
viewer.scene.globe.pick = () => null;
assert.equal(
pickViewTarget(viewer),
sea,
'the ellipsoid still answers when nothing is under the cursor',
);
});
test('target frame identifies a straight-down camera in local ENU space', () => {
const { viewer } = createViewer();
const frame = readCameraTargetFrame(viewer);
assert.ok(frame);
assert.ok(Math.abs(frame.pitch - Cesium.Math.toRadians(-90)) < 0.001);
assert.ok(frame.range > 999 && frame.range < 1_001);
assert.equal(frame.heading, Cesium.Math.toRadians(90));
});
test('tilt preserves the picked target and range while choosing oblique pitch', () => {
const { viewer, calls, target } = createViewer();
const before = readCameraTargetFrame(viewer);
const result = toggleCameraTilt(viewer);
const lookAt = calls.find((call) => call.type === 'lookAt');
assert.deepEqual(result, { tilted: true, pitch: OBLIQUE_PITCH });
assert.equal(lookAt.target, target);
assert.equal(lookAt.offset.range, before.range);
assert.equal(lookAt.offset.pitch, OBLIQUE_PITCH);
assert.ok(calls.some((call) => call.type === 'lookAtTransform'));
assert.ok(calls.some((call) => call.type === 'setView'));
});
test('north-up preserves target pitch and range', () => {
const { viewer, calls } = createViewer();
const before = readCameraTargetFrame(viewer);
assert.equal(resetCameraNorth(viewer), true);
const lookAt = calls.find((call) => call.type === 'lookAt');
assert.equal(lookAt.offset.heading, 0);
assert.equal(lookAt.offset.pitch, before.pitch);
assert.equal(lookAt.offset.range, before.range);
});
test('bindings route both controls and release every listener on destroy', () => {
const { viewer } = createViewer();
const tiltButton = new FakeButton();
const northButton = new FakeButton();
const navigations = [];
const toasts = [];
const controls = bindCameraOrientationControls({
viewer,
elements: { tiltButton, northButton },
runNavigation(noun, navigate) {
navigations.push(noun);
return navigate();
},
showToast: (message) => toasts.push(message),
});
tiltButton.click();
northButton.click();
assert.deepEqual(navigations, ['camera', 'camera']);
assert.deepEqual(toasts, ['Tilted view', 'North up']);
// The button shows the state the click just commanded, not a re-measurement.
assert.equal(tiltButton.getAttribute('aria-pressed'), 'true');
assert.equal(northButton.getAttribute('--camera-heading'), '90deg');
viewer.camera.heading = -1e-12;
controls.sync();
assert.equal(northButton.getAttribute('--camera-heading'), '0deg');
controls.destroy();
tiltButton.click();
assert.deepEqual(navigations, ['camera', 'camera']);
assert.equal(STRAIGHT_DOWN_PITCH, Cesium.Math.toRadians(-89));
});
for (const [label, altitude, range] of [
['aircraft', 10000, 1500],
['satellite', 400000, 1500000],
['high satellite', 35786000, 3000000],
]) {
test(`${label}: animated tilt and north retain a moving EntityView`, (t) => {
// Use Cesium's built-in TEME fallback without fetching Earth-orientation data.
t.mock.method(
Cesium.Transforms,
'computeFixedToIcrfMatrix',
() => undefined,
);
let target = Cesium.Cartesian3.fromDegrees(-97, 30, altitude);
const { viewer } = createRealViewer(target);
viewer.scene.preUpdate = new Cesium.Event();
viewer.clock = { currentTime: Cesium.JulianDate.now() };
const entity = new Cesium.Entity({
position: new Cesium.CallbackPositionProperty(() => target, false),
trackingReferenceFrame: Cesium.TrackingReferenceFrame.ENU,
});
entity.gevDisplayPosition = () => target;
viewer.trackedEntity = entity;
const follow = new Cesium.EntityView(entity, viewer.scene);
follow.update(viewer.clock.currentTime);
viewer.camera.lookAt(
target,
new Cesium.HeadingPitchRange(
Cesium.Math.toRadians(350),
OBLIQUE_PITCH,
range,
),
);
let time = 0;
const animator = createCameraOrientationAnimator(viewer, {
now: () => time,
duration: 1000,
});
for (const pitch of [STRAIGHT_DOWN_PITCH, OBLIQUE_PITCH]) {
const frame = readCameraTargetFrame(viewer);
animator.animate(frame, { heading: 0, pitch });
for (const step of [0, 100, 500, 900, 1000]) {
time = (pitch === STRAIGHT_DOWN_PITCH ? 0 : 1000) + step;
target = Cesium.Cartesian3.fromDegrees(
-97 + time / 100000,
30,
altitude,
);
follow.update(viewer.clock.currentTime);
const transform = Cesium.Matrix4.clone(viewer.camera.transform);
viewer.scene.preUpdate.raiseEvent();
assert.equal(viewer.trackedEntity, entity);
assert.ok(
Cesium.Matrix4.equalsEpsilon(
viewer.camera.transform,
transform,
1e-8,
),
);
const actual = readCameraTargetFrame(viewer);
const eased = Cesium.EasingFunction.CUBIC_IN_OUT(step / 1000);
assert.ok(
Math.abs(actual.pitch - Cesium.Math.lerp(frame.pitch, pitch, eased)) <
1e-6,
);
assert.ok(Math.abs(actual.range - range) < 1e-5);
}
assert.equal(viewer.scene.preUpdate.numberOfListeners, 0);
}
target = Cesium.Cartesian3.fromDegrees(-96, 31, altitude);
follow.update(viewer.clock.currentTime);
assert.equal(viewer.trackedEntity, entity);
assert.ok(Math.abs(readCameraTargetFrame(viewer).range - range) < 1e-5);
});
}
test('orientation animation cancels on replacement and explicit cancellation', () => {
const { viewer } = createRealViewer(Cesium.Cartesian3.fromDegrees(0, 0));
orbit(viewer, Cesium.Cartesian3.fromDegrees(0, 0), 90, OBLIQUE_PITCH, 1000);
viewer.scene.preUpdate = new Cesium.Event();
const animator = createCameraOrientationAnimator(viewer);
const frame = readCameraTargetFrame(viewer);
animator.animate(frame, { heading: 0, pitch: STRAIGHT_DOWN_PITCH });
animator.animate(frame, { heading: 0, pitch: OBLIQUE_PITCH });
assert.equal(viewer.scene.preUpdate.numberOfListeners, 1);
viewer.trackedEntity = {};
viewer.scene.preUpdate.raiseEvent();
assert.equal(viewer.scene.preUpdate.numberOfListeners, 0);
viewer.trackedEntity = undefined;
animator.animate(frame, { heading: 0, pitch: STRAIGHT_DOWN_PITCH });
animator.cancel();
assert.equal(viewer.scene.preUpdate.numberOfListeners, 0);
});
test('orientation navigation preserves follow and selection; new navigation cancels animation', () => {
const calls = [];
const entity = {};
const viewer = {
trackedEntity: entity,
camera: { cancelFlight: () => calls.push('cancel-flight') },
};
let cockpit = false;
const navigation = new NavigationController({
viewer,
tracking: {},
isCockpitActive: () => cockpit,
cancelOrientation: () => calls.push('cancel-orientation'),
clearLocation: () => calls.push('clear-location'),
cancelShareSelection: () => calls.push('clear-selection'),
interruptCameraMotion: () => calls.push('interrupt-motion'),
stopOrbit: () => calls.push('stop-orbit'),
showToast: () => calls.push('toast'),
});
assert.equal(
navigation.runOrientation('camera', () => 'animated'),
'animated',
);
assert.equal(viewer.trackedEntity, entity);
assert.deepEqual(calls, [
'cancel-orientation',
'interrupt-motion',
'stop-orbit',
'cancel-flight',
]);
calls.length = 0;
navigation._stampNavigation({ cancelPendingSelection: false });
assert.deepEqual(calls, ['cancel-orientation', 'clear-location']);
calls.length = 0;
cockpit = true;
assert.equal(
navigation.runOrientation('camera', () =>
assert.fail('cockpit should refuse'),
),
false,
);
assert.deepEqual(calls, ['toast']);
});
test('rapid tilt presses reverse direction and north-up keeps the requested tilt', (t) => {
let time = 0;
t.mock.method(performance, 'now', () => time);
const target = Cesium.Cartesian3.fromDegrees(0, 0);
const { viewer } = createRealViewer(target);
orbit(viewer, target, 90, OBLIQUE_PITCH, 1000);
viewer.scene.preUpdate = new Cesium.Event();
const tiltButton = new FakeButton();
const northButton = new FakeButton();
let controls;
controls = bindCameraOrientationControls({
viewer,
elements: { tiltButton, northButton },
runNavigation: (_noun, navigate) => {
controls.cancel();
return navigate();
},
});
tiltButton.click();
tiltButton.click();
assert.equal(tiltButton.getAttribute('aria-pressed'), 'true');
tiltButton.click();
northButton.click();
assert.equal(viewer.scene.preUpdate.numberOfListeners, 1);
time = 650;
viewer.scene.preUpdate.raiseEvent();
const frame = readCameraTargetFrame(viewer);
assert.ok(Math.abs(frame.pitch - STRAIGHT_DOWN_PITCH) < 1e-6);
assert.ok(Math.abs(frame.heading) < 1e-6);
controls.destroy();
assert.equal(viewer.scene.preUpdate.numberOfListeners, 0);
});