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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>
let constructor_test_name = "XRRay constructors work";
let constructor_tests = function() {
// Constructor tests for XRRay.
// Spec: https://immersive-web.github.io/webxr/#xrray-interface
//
// Constructor 1 - from origin and direction
//
{
// Check defaults - should be 0,0,0,1 for origin and 0,0,-1,0 for direction,
// identity matrix for the transform:
let xrRay1 = new XRRay();
let xrRay2 = new XRRay({});
let xrRay3 = new XRRay({}, {});
assert_point_approx_equals(
xrRay1.origin, {x : 0.0, y : 0.0, z : 0.0, w : 1.0},
FLOAT_EPSILON, "origin-default:");
assert_point_approx_equals(
xrRay1.direction, {x : 0.0, y : 0.0, z : -1.0, w : 0.0},
FLOAT_EPSILON, "direction-default:");
assert_matrix_approx_equals(
xrRay1.matrix, IDENTITY_MATRIX,
FLOAT_EPSILON, "matrix-default:");
assert_ray_approx_equals(xrRay1, xrRay2, FLOAT_EPSILON, "ray1-ray2-default:");
assert_ray_approx_equals(xrRay2, xrRay3, FLOAT_EPSILON, "ray2-ray3-default:");
}
{
// Check custom value for origin, default for direction:
let originDict = {x : 11.0, y : 12.0, z : 13.0, w : 1.0};
let xrRay1 = new XRRay(originDict);
let xrRay2 = new XRRay(DOMPoint.fromPoint(originDict));
let xrRay3 = new XRRay(DOMPointReadOnly.fromPoint(originDict));
let matrix1 = [ 1, 0, 0, 0,
0, 1, 0, 0,
0, 0, 1, 0,
11, 12, 13, 1];
assert_point_approx_equals(
xrRay1.origin, originDict,
FLOAT_EPSILON, "origin-custom-direction-default:");
assert_point_approx_equals(
xrRay1.direction, {x : 0.0, y : 0.0, z : -1.0, w : 0.0},
FLOAT_EPSILON, "direction-custom-direction-default:");
assert_matrix_approx_equals(
xrRay1.matrix, matrix1,
FLOAT_EPSILON, "matrix-custom-direction-default:");
assert_ray_approx_equals(xrRay1, xrRay2, FLOAT_EPSILON, "ray1-ray2-direction-default:");
assert_ray_approx_equals(xrRay2, xrRay3, FLOAT_EPSILON, "ray2-ray3-direction-default:");
}
{
// Check custom values - ray rotated from -Z onto +X,
// not placed at origin:
// - from DOMPoint
// - from DOMPointReadOnly
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};
// column-major
let matrix1 = [ 0, 0, 1, 0,
0, 1, 0, 0,
-1, 0, 0, 0,
10, 10, 10, 1];
let xrRay1 = new XRRay(
originDict,
directionDict);
let xrRay2 = new XRRay(
DOMPoint.fromPoint(originDict),
DOMPoint.fromPoint(directionDict));
let xrRay3 = new XRRay(
DOMPointReadOnly.fromPoint(originDict),
DOMPointReadOnly.fromPoint(directionDict));
assert_point_approx_equals(
xrRay1.origin, originDict,
FLOAT_EPSILON, "origin-custom:");
assert_point_approx_equals(
xrRay1.direction, directionNorm,
FLOAT_EPSILON, "direction-custom:");
assert_matrix_approx_equals(
xrRay1.matrix, matrix1,
FLOAT_EPSILON, "matrix-custom:");
assert_ray_approx_equals(xrRay1, xrRay2, FLOAT_EPSILON, "ray1-ray2:");
assert_ray_approx_equals(xrRay2, xrRay3, FLOAT_EPSILON, "ray2-ray3:");
}
{
// Check that we throw exception on direction too close to 0,0,0:
let originDict = {x : 10.0, y : 10.0, z : 10.0, w : 1.0};
let directionDict = {x : 1.0, y : 0.0, z : 0.0, w : 0.0};
assert_throws_js(TypeError, () => new XRRay(
DOMPoint.fromPoint(originDict),
DOMPoint.fromPoint({x : 0.0, y : 0.0, z : 0.0, w : 0.0})
), "Constructor should throw for zero direction");
assert_throws_js(TypeError, () => new XRRay(
DOMPoint.fromPoint(originDict),
DOMPoint.fromPoint({x : 1.0, y : 0.0, z : 0.0, w : 0.5})
), "Constructor should throw for nonzero direction w coordinate");
assert_throws_js(TypeError, () => new XRRay(
DOMPoint.fromPoint({x : 10.0, y : 10.0, z : 10.0, w : 0.5}),
DOMPoint.fromPoint(directionDict)
), "Constructor should throw for non-1 origin w coordinate");
}
//
// Constructor 2 - from rigid transform.
//
{
// Not placed at origin, ray rotated by 135 degrees around Y:
let originDict = {x : 10.0, y : 10.0, z : 10.0, w : 1.0};
let directionQuaternionDict = { x : 0, y : 0.9239, z : 0, w : 0.3827 };
let directionNorm2 = { x : -0.707, y : 0.0, z : 0.707, w : 0.0 };
let matrix2 = [-0.707, 0, -0.707, 0,
0., 1, 0, 0,
0.707, 0, -0.707, 0,
10., 10, 10., 1];
let xrRay = new XRRay(
new XRRigidTransform(
DOMPoint.fromPoint(originDict),
DOMPoint.fromPoint(directionQuaternionDict)));
assert_point_approx_equals(
xrRay.origin, originDict,
FLOAT_EPSILON, "origin-custom-rigid:");
assert_point_approx_equals(
xrRay.direction, directionNorm2,
FLOAT_EPSILON, "direction-custom-rigid:");
assert_matrix_approx_equals(
xrRay.matrix, matrix2,
FLOAT_EPSILON, "matrix-custom-rigid:");
}
};
test(constructor_tests, constructor_test_name);
</script>
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