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// This formats dict as a string suitable as test name.
// format_value() is provided by testharness.js,
// which also preserves sign for -0.
function format_dict(dict) {
const props = [];
for (let prop in dict) {
props.push(`${prop}: ${format_value(dict[prop])}`);
}
return `{${props.join(', ')}}`;
}
// Create a normal JS object with the expected properties
// from a dict with only m11..m44 specified (not a..f).
function matrix3D(dict) {
const matrix = {m11: 1, m12: 0, m13: 0, m14: 0,
m21: 0, m22: 1, m23: 0, m24: 0,
m31: 0, m32: 0, m33: 1, m34: 0,
m41: 0, m42: 0, m43: 0, m44: 1}
matrix.is2D = false;
for (let member in dict) {
matrix[member] = dict[member];
}
matrix.a = matrix.m11;
matrix.b = matrix.m12;
matrix.c = matrix.m21;
matrix.d = matrix.m22;
matrix.e = matrix.m41;
matrix.f = matrix.m42;
return matrix;
}
function matrix2D(dict) {
const matrix = matrix3D(dict);
matrix.is2D = true;
return matrix;
}
function checkMatrix(actual, expected, { epsilon = Number.MIN_VALUE } = {}) {
for (let member in expected) {
if (epsilon && typeof expected[member] === "number") {
assert_approx_equals(actual[member], expected[member], epsilon, member);
} else {
assert_equals(actual[member], expected[member], member);
}
}
}
// checkMatrix and checkDOMMatrix should probably be merged...
function checkDOMMatrix(m, exp, is2D) {
if (is2D === undefined) {
is2D = exp.is2D;
}
assert_equals(m.m11, exp.m11, "Expected value for m11 is " + exp.m11);
assert_equals(m.m12, exp.m12, "Expected value for m12 is " + exp.m12);
assert_equals(m.m13, exp.m13, "Expected value for m13 is " + exp.m13);
assert_equals(m.m14, exp.m14, "Expected value for m14 is " + exp.m14);
assert_equals(m.m21, exp.m21, "Expected value for m21 is " + exp.m21);
assert_equals(m.m22, exp.m22, "Expected value for m22 is " + exp.m22);
assert_equals(m.m23, exp.m23, "Expected value for m23 is " + exp.m23);
assert_equals(m.m24, exp.m24, "Expected value for m24 is " + exp.m24);
assert_equals(m.m31, exp.m31, "Expected value for m31 is " + exp.m31);
assert_equals(m.m32, exp.m32, "Expected value for m32 is " + exp.m32);
assert_equals(m.m33, exp.m33, "Expected value for m33 is " + exp.m33);
assert_equals(m.m34, exp.m34, "Expected value for m34 is " + exp.m34);
assert_equals(m.m41, exp.m41, "Expected value for m41 is " + exp.m41);
assert_equals(m.m42, exp.m42, "Expected value for m42 is " + exp.m42);
assert_equals(m.m43, exp.m43, "Expected value for m43 is " + exp.m43);
assert_equals(m.m44, exp.m44, "Expected value for m44 is " + exp.m44);
assert_equals(m.is2D, is2D, "Expected value for is2D is " + is2D);
assert_equals(m.isIdentity, exp.isIdentity, "Expected value for isIdentity is " + exp.isIdentity);
}
function identity() {
return new DOMMatrix(
[1, 0, 0, 0,
0, 1, 0 ,0,
0, 0, 1, 0,
0, 0, 0, 1]);
}
function update(matrix, f) {
f(matrix);
return matrix;
}
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