LayoutTests/spatial-css/spatial-portal-model-entity-transform.html

<!DOCTYPE html> <!-- webkit-test-runner [ SpatialPortalEnabled=true ModelElementEnabled=true allowTestOnlyIPC=true ] -->
<html>
<script src="../resources/testharness.js"></script>
<script src="../resources/testharnessreport.js"></script>
<script src="../model-element/resources/model-utils.js"></script>
<script src="resources/spatial-portal-utils.js"></script>
<style>
    .portal { spatial: portal; width: 400px; height: 300px; }
</style>
<body>
<script>
'use strict';

window.internals?.disableModelLoadDelaysForTesting();

const asset = "2x2x2-center.usdz";
const translated = as3d(new DOMMatrixReadOnly().translate(200, 0, 0));

promise_test(async t => {
    const portal = createPortal(t);
    const model = appendModel(portal, asset);
    await model.ready;

    assert_3d_matrix_is_identity(model.entityTransform, true);
}, `an untransformed child reports an identity entityTransform`);

promise_test(async t => {
    const portal = createPortal(t);
    const model = appendModel(portal, asset);
    await model.ready;

    model.entityTransform = translated;
    assert_3d_matrix_approx_equals(model.entityTransform, translated);
}, `entityTransform on a child reads back what was set`);

promise_test(async t => {
    const portal = createPortal(t);
    const model = appendModel(portal, asset);
    await model.ready;

    model.style.translate = "200px 0 0";
    assert_throws_dom("InvalidStateError", () => {
        model.entityTransform = translated;
    });
}, `entityTransform is refused while a CSS transform applies`);

promise_test(async t => {
    const portal = createPortal(t);
    const model = appendModel(portal, asset);
    await model.ready;

    // Deliberately one task: a stale computed style would make the setter refuse.
    model.style.translate = "200px 0 0";
    model.style.translate = "";
    model.entityTransform = translated;

    assert_3d_matrix_approx_equals(model.entityTransform, translated);
}, `entityTransform is accepted right after a CSS transform is cleared in the same task`);

promise_test(async t => {
    const portal = createPortal(t);
    const model = appendModel(portal, asset);
    await model.ready;

    model.entityTransform = as3d(new DOMMatrixReadOnly().translate(-200, 0, 0));
    model.style.translate = "200px 0 0";

    const overridden = await waitForEntityTransform(model, transform => !transform.isIdentity
        && Math.abs(transform.m41 - 200) < epsilon, "CSS overriding the scripted transform");
    assert_3d_matrix_approx_equals(overridden, translated);
}, `a CSS transform overrides a transform previously set through entityTransform`);

promise_test(async t => {
    const portal = createPortal(t);
    const model = appendModel(portal, asset, "orbit");
    await model.ready;

    model.entityTransform = translated;
    assert_3d_matrix_approx_equals(model.entityTransform, translated);
}, `entityTransform is accepted on a child whose stagemode is set`);

</script>
</body>
</html>