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<!DOCTYPE html>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="../resources/webxr_util.js"></script>
<script src="../resources/webxr_test_constants.js"></script>
<script>
let testName = "XRPlane.lastChangedTime does not update if plane does not change";
xr_session_promise_test(
testName,
(session, controller, t) => {
controller.setWorld(DEFAULT_WORLD_WITH_FLOOR);
let firstFrameTime = null;
return new Promise((resolve) => {
session.requestAnimationFrame((time, frame) => {
t.step(() => {
let planes = frame.detectedPlanes;
assert_equals(planes.size, 1);
// XRPlaneSet is set-like, we use forEach to get the first/only plane.
planes.forEach(p => { firstFrameTime = p.lastChangedTime; });
});
// Request next frame without updating the world.
session.requestAnimationFrame((time, frame) => {
t.step(() => {
let secondFramePlanes = frame.detectedPlanes;
assert_equals(secondFramePlanes.size, 1);
let secondFrameTime = null;
// XRPlaneSet is set-like, we use forEach to get the first/only plane.
secondFramePlanes.forEach(p => { secondFrameTime = p.lastChangedTime; });
assert_equals(secondFrameTime, firstFrameTime, "lastChangedTime should not change");
});
// Now update world and verify it changes.
controller.setWorld(DEFAULT_WORLD_WITH_FLOOR);
session.requestAnimationFrame((time, frame) => {
t.step(() => {
let thirdFramePlanes = frame.detectedPlanes;
assert_equals(thirdFramePlanes.size, 1);
let thirdFrameTime = null;
// XRPlaneSet is set-like, we use forEach to get the first/only plane.
thirdFramePlanes.forEach(p => { thirdFrameTime = p.lastChangedTime; });
assert_greater_than(thirdFrameTime, firstFrameTime, "lastChangedTime should update after setWorld");
});
resolve();
});
});
});
});
},
IMMERSIVE_AR_DEVICE,
"immersive-ar",
{ requiredFeatures: ["plane-detection"] }
);
</script>
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