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Add ol.math.solveLinearSystem

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This commit is contained in:
Petr Sloup
2015-06-09 15:43:40 +02:00
parent df6b90246a
commit 44a64ba451
2 changed files with 102 additions and 0 deletions
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39
test/spec/ol/math.test.js
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@@ -91,6 +91,45 @@ describe('ol.math.roundUpToPowerOfTwo', function() {
});
describe('ol.math.solveLinearSystem', function() {
it('calculates correctly', function() {
var result = ol.math.solveLinearSystem([
[2, 1, 3, 1],
[2, 6, 8, 3],
[6, 8, 18, 5]
]);
expect(result[0]).to.roughlyEqual(0.3, 1e-9);
expect(result[1]).to.roughlyEqual(0.4, 1e-9);
expect(result[2]).to.roughlyEqual(0, 1e-9);
});
it('can handle singular matrix', function() {
var result = ol.math.solveLinearSystem([
[2, 1, 3, 1],
[2, 6, 8, 3],
[2, 1, 3, 1]
]);
expect(result).to.be(null);
});
it('raises an exception when the matrix is malformed', function() {
expect(function() {
ol.math.solveLinearSystem([
[2, 1, 3, 1],
[2, 6, 8, 3],
[6, 8, 18]
]);
}).to.throwException();
expect(function() {
ol.math.solveLinearSystem([
[2, 1, 3, 1],
[2, 6, 8, 3],
[6, 8, 18, 5, 0]
]);
}).to.throwException();
});
});
describe('ol.math.toDegrees', function() {
it('returns the correct value at -π', function() {
expect(ol.math.toDegrees(-Math.PI)).to.be(-180);