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<!DOCTYPE html>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="resources/webxr_test_constants.js"></script>
<script src="resources/webxr_test_asserts.js"></script>
<script src="resources/webxr_math_utils.js"></script>
<script>
let matrix_tests_name = "XRRay matrix works";
let matrix_tests = function() {
// Matrix tests for XRRay.
// Spec: https://immersive-web.github.io/webxr/#xrray-interface
const initialOrigin = {x : 0, y : 0, z : 0, w : 1};
const initialDirection = {x : 0, y : 0, z : -1, w : 0};
// Test 1. Simple translation and rotation.
{
let originDict = {x : 10.0, y : 10.0, z : 10.0, w : 1.0};
let directionDict = {x : 10.0, y : 0.0, z : 0.0, w : 0.0};
let directionNorm = {x : 1.0, y : 0.0, z : 0.0, w : 0.0};
let xrRay = new XRRay(
DOMPoint.fromPoint(originDict),
DOMPoint.fromPoint(directionDict));
let transformedOrigin = normalize_perspective(transform_point_by_matrix(xrRay.matrix, initialOrigin));
let transformedDirection = normalize_perspective(transform_point_by_matrix(xrRay.matrix, initialDirection));
assert_point_approx_equals(
originDict, transformedOrigin,
FLOAT_EPSILON, "origin-test1:");
assert_point_approx_equals(
directionNorm, transformedDirection,
FLOAT_EPSILON, "direction-test1:");
}
// Test 2. Co-linear direction - rotation by 180 deg.
{
let originDict = {x : 10.0, y : 10.0, z : 10.0, w : 1.0};
let directionDict = {x : 0.0, y : 0.0, z : 1.0, w : 0.0};
let directionNorm = {x : 0.0, y : 0.0, z : 1.0, w : 0.0};
let xrRay = new XRRay(
DOMPoint.fromPoint(originDict),
DOMPoint.fromPoint(directionDict));
let transformedOrigin = normalize_perspective(transform_point_by_matrix(xrRay.matrix, initialOrigin));
let transformedDirection = normalize_perspective(transform_point_by_matrix(xrRay.matrix, initialDirection));
assert_point_approx_equals(
originDict, transformedOrigin,
FLOAT_EPSILON, "origin-test2:");
assert_point_approx_equals(
directionNorm, transformedDirection,
FLOAT_EPSILON, "direction-test2:");
}
// Test 3. No translation.
{
let originDict = {x : 0.0, y : 0.0, z : 0.0, w : 1.0};
let directionDict = {x : 10.0, y : 0.0, z : 0.0, w : 0.0};
let directionNorm = {x : 1.0, y : 0.0, z : 0.0, w : 0.0};
let xrRay = new XRRay(
DOMPoint.fromPoint(originDict),
DOMPoint.fromPoint(directionDict));
let transformedOrigin = normalize_perspective(transform_point_by_matrix(xrRay.matrix, initialOrigin));
let transformedDirection = normalize_perspective(transform_point_by_matrix(xrRay.matrix, initialDirection));
assert_point_approx_equals(
originDict, transformedOrigin,
FLOAT_EPSILON, "origin-test3:");
assert_point_approx_equals(
directionNorm, transformedDirection,
FLOAT_EPSILON, "direction-test3:");
}
// Test 4. No rotation.
{
let originDict = {x : 10.0, y : 10.0, z : 10.0, w : 1.0};
let directionDict = {x : 0.0, y : 0.0, z : -1.0, w : 0.0};
let directionNorm = {x : 0.0, y : 0.0, z : -1.0, w : 0.0};
let xrRay = new XRRay(
DOMPoint.fromPoint(originDict),
DOMPoint.fromPoint(directionDict));
let transformedOrigin = normalize_perspective(transform_point_by_matrix(xrRay.matrix, initialOrigin));
let transformedDirection = normalize_perspective(transform_point_by_matrix(xrRay.matrix, initialDirection));
assert_point_approx_equals(
originDict, transformedOrigin,
FLOAT_EPSILON, "origin-test4:");
assert_point_approx_equals(
directionNorm, transformedDirection,
FLOAT_EPSILON, "direction-test4:");
}
};
test(matrix_tests, matrix_tests_name);
</script>
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