Andreas Hocevar
60 lines
1.9 KiB
JavaScript
60 lines
1.9 KiB
JavaScript
// Copyright 2008 The Closure Library Authors. All Rights Reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS-IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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goog.provide('goog.math.LineTest');
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goog.setTestOnly('goog.math.LineTest');
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goog.require('goog.math.Coordinate');
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goog.require('goog.math.Line');
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goog.require('goog.testing.jsunit');
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function testEquals() {
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var input = new goog.math.Line(1, 2, 3, 4);
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assert(input.equals(input));
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}
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function testClone() {
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var input = new goog.math.Line(1, 2, 3, 4);
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assertNotEquals('Clone returns a new object', input, input.clone());
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assertTrue('Contents of clone match original', input.equals(input.clone()));
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}
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function testGetLength() {
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var input = new goog.math.Line(0, 0, Math.sqrt(2), Math.sqrt(2));
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assertRoughlyEquals(input.getSegmentLengthSquared(), 4, 1e-10);
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assertRoughlyEquals(input.getSegmentLength(), 2, 1e-10);
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}
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function testGetClosestPoint() {
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var input = new goog.math.Line(0, 1, 1, 2);
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var point = input.getClosestPoint(0, 3);
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assertRoughlyEquals(point.x, 1, 1e-10);
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assertRoughlyEquals(point.y, 2, 1e-10);
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}
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function testGetClosestSegmentPoint() {
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var input = new goog.math.Line(0, 1, 2, 3);
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var point = input.getClosestSegmentPoint(4, 4);
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assertRoughlyEquals(point.x, 2, 1e-10);
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assertRoughlyEquals(point.y, 3, 1e-10);
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point = input.getClosestSegmentPoint(new goog.math.Coordinate(-1, -10));
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assertRoughlyEquals(point.x, 0, 1e-10);
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assertRoughlyEquals(point.y, 1, 1e-10);
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}
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