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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 = "XRRigidTransform constructor works";
let fakeDeviceInitParams = TRACKED_IMMERSIVE_DEVICE;
let testFunction =
(session, fakeDeviceController, t) => new Promise((resolve, reject) => {
let coordDict = function(coords) {
let tempDict = {
x : coords[0],
y : coords[1],
z : coords[2]
}
if (coords.length >= 4) {
tempDict["w"] = coords[3];
}
return tempDict;
};
let createDOMPoint = function(coords) {
return DOMPoint.fromPoint(coordDict(coords));
};
let createDOMPointReadOnly = function(coords) {
return DOMPointReadOnly.fromPoint(coordDict(coords));
};
let quaternionLength = function(point) {
return Math.sqrt(
(point.x * point.x) +
(point.y * point.y) +
(point.z * point.z) +
(point.w * point.w));
};
let checkDOMPoint = function(point, x, y, z, w, desc) {
t.step(() => {
assert_approx_equals(point.x, x, FLOAT_EPSILON, `${desc}: x value`);
assert_approx_equals(point.y, y, FLOAT_EPSILON, `${desc}: y value`);
assert_approx_equals(point.z, z, FLOAT_EPSILON, `${desc}: z value`);
assert_approx_equals(point.w, w, FLOAT_EPSILON, `${desc}: w value`);
});
};
let checkTransform = function(transformObj, desc) {
t.step(() => {
assert_not_equals(transformObj, null, `${desc}: exists`);
assert_not_equals(transformObj.position, null, `${desc}: position exists`);
assert_not_equals(transformObj.orientation, null, `${desc}: orientation exists`);
assert_not_equals(transformObj.matrix, null, `${desc}: matrix exists`);
assert_equals(transformObj.matrix.length, 16, `${desc}: matrix of correct length`);
});
};
// test creating transform with specified position and orientation
// make sure that orientation was normalized to have length = 1.0
let transform = new XRRigidTransform(
createDOMPoint([1.0, 2.0, 3.0]),
createDOMPoint([1.1, 2.1, 3.1, 1.0]));
checkTransform(transform, "Arbitrary transform");
checkDOMPoint(transform.position, 1.0, 2.0, 3.0, 1.0, "Arbitrary transform position");
assert_approx_equals(quaternionLength(transform.orientation), 1.0, FLOAT_EPSILON,
"Arbitrary transform is normalized");
// test creating identity transform
let identity = new XRRigidTransform();
checkTransform(identity, "Identity transform");
checkDOMPoint(identity.position, 0.0, 0.0, 0.0, 1.0, "Identity transform position");
checkDOMPoint(identity.orientation, 0.0, 0.0, 0.0, 1.0, "Identity transform orientation");
// create transform with only position specified
transform = new XRRigidTransform(createDOMPoint([1.0, 2.0, 3.0]));
checkTransform(transform, "Position-only");
// create transform with only orientation specified
transform = new XRRigidTransform(undefined, createDOMPoint([1.1, 2.1, 3.1, 1.0]));
checkTransform(transform, "orientation-only");
// create transform with DOMPointReadOnly
transform = new XRRigidTransform(
createDOMPointReadOnly([1.0, 2.0, 3.0]),
createDOMPointReadOnly([1.1, 2.1, 3.1, 1.0]));
checkTransform(transform, "Created with DOMPointReadOnly");
// create transform with dictionary
transform = new XRRigidTransform(
coordDict([1.0, 2.0, 3.0]),
coordDict([1.1, 2.1, 3.1, 1.0]));
checkTransform(transform, "Created with dict");
assert_throws_js(TypeError, () => new XRRigidTransform(
coordDict([1.0, 2.0, 3.0, 0.5]),
coordDict([1.1, 2.1, 3.1, 1.0])
), "Constructor should throw TypeError for non-1 position w values");
assert_throws_dom("InvalidStateError", () => new XRRigidTransform(
coordDict([1.0, 2.0, 3.0, 1.0]),
coordDict([0, 0, 0, 0])
), "Constructor should throw InvalidStateError for non-normalizeable orientation values");
resolve();
});
xr_session_promise_test(testName, testFunction, fakeDeviceInitParams,
'immersive-vr');
</script>
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