/**
* @license
* Copyright The Closure Library Authors.
* SPDX-License-Identifier: Apache-2.0
*/
goog.module('goog.graphics.PathTest');
goog.setTestOnly();
const AffineTransform = goog.require('goog.graphics.AffineTransform');
const Path = goog.require('goog.graphics.Path');
const graphics = goog.require('goog.testing.graphics');
const testSuite = goog.require('goog.testing.testSuite');
testSuite({
testConstructor() {
const path = new Path();
assertTrue(path.isSimple());
assertNull(path.getCurrentPoint());
graphics.assertPathEquals([], path);
},
testGetSegmentCount() {
assertArrayEquals([2, 2, 6, 6, 0], [
Path.Segment.MOVETO, Path.Segment.LINETO, Path.Segment.CURVETO,
Path.Segment.ARCTO, Path.Segment.CLOSE
].map(Path.getSegmentCount));
},
testSimpleMoveTo() {
const path = new Path();
path.moveTo(30, 50);
assertTrue(path.isSimple());
assertObjectEquals([30, 50], path.getCurrentPoint());
graphics.assertPathEquals(['M', 30, 50], path);
},
testRepeatedMoveTo() {
const path = new Path();
path.moveTo(30, 50);
path.moveTo(40, 60);
assertTrue(path.isSimple());
assertObjectEquals([40, 60], path.getCurrentPoint());
graphics.assertPathEquals(['M', 40, 60], path);
},
testSimpleLineTo() {
const path = new Path();
const e = assertThrows(() => {
path.lineTo(30, 50);
});
assertEquals('Path cannot start with lineTo', e.message);
path.moveTo(0, 0);
path.lineTo(30, 50);
assertTrue(path.isSimple());
assertObjectEquals([30, 50], path.getCurrentPoint());
graphics.assertPathEquals(['M', 0, 0, 'L', 30, 50], path);
},
testMultiArgLineTo() {
const path = new Path();
path.moveTo(0, 0);
path.lineTo(30, 50, 40, 60);
assertTrue(path.isSimple());
assertObjectEquals([40, 60], path.getCurrentPoint());
graphics.assertPathEquals(['M', 0, 0, 'L', 30, 50, 40, 60], path);
},
testRepeatedLineTo() {
const path = new Path();
path.moveTo(0, 0);
path.lineTo(30, 50);
path.lineTo(40, 60);
assertTrue(path.isSimple());
assertObjectEquals([40, 60], path.getCurrentPoint());
graphics.assertPathEquals(['M', 0, 0, 'L', 30, 50, 40, 60], path);
},
testSimpleCurveTo() {
const path = new Path();
const e = assertThrows(() => {
path.curveTo(10, 20, 30, 40, 50, 60);
});
assertEquals('Path cannot start with curve', e.message);
path.moveTo(0, 0);
path.curveTo(10, 20, 30, 40, 50, 60);
assertTrue(path.isSimple());
assertObjectEquals([50, 60], path.getCurrentPoint());
graphics.assertPathEquals(['M', 0, 0, 'C', 10, 20, 30, 40, 50, 60], path);
},
testMultiCurveTo() {
const path = new Path();
path.moveTo(0, 0);
path.curveTo(10, 20, 30, 40, 50, 60, 70, 80, 90, 100, 110, 120);
assertTrue(path.isSimple());
assertObjectEquals([110, 120], path.getCurrentPoint());
graphics.assertPathEquals(
['M', 0, 0, 'C', 10, 20, 30, 40, 50, 60, 70, 80, 90, 100, 110, 120],
path);
},
testRepeatedCurveTo() {
const path = new Path();
path.moveTo(0, 0);
path.curveTo(10, 20, 30, 40, 50, 60);
path.curveTo(70, 80, 90, 100, 110, 120);
assertTrue(path.isSimple());
assertObjectEquals([110, 120], path.getCurrentPoint());
graphics.assertPathEquals(
['M', 0, 0, 'C', 10, 20, 30, 40, 50, 60, 70, 80, 90, 100, 110, 120],
path);
},
testSimpleArc() {
const path = new Path();
path.arc(50, 60, 10, 20, 30, 30, false);
assertFalse(path.isSimple());
const p = path.getCurrentPoint();
assertEquals(55, p[0]);
assertRoughlyEquals(77.32, p[1], 0.01);
graphics.assertPathEquals(
['M', 58.66, 70, 'A', 10, 20, 30, 30, 55, 77.32], path);
},
/** @suppress {checkTypes} suppression added to enable type checking */
testArcNonConnectClose() {
const path = new Path();
path.moveTo(0, 0);
path.arc(10, 10, 10, 10, -90, 180);
assertObjectEquals([10, 20], path.getCurrentPoint());
path.close();
assertObjectEquals([10, 0], path.getCurrentPoint());
},
testRepeatedArc() {
const path = new Path();
path.arc(50, 60, 10, 20, 30, 30, false);
path.arc(50, 60, 10, 20, 60, 30, false);
assertFalse(path.isSimple());
assertObjectEquals([50, 80], path.getCurrentPoint());
graphics.assertPathEquals(
[
'M', 58.66, 70, 'A', 10, 20, 30, 30, 55, 77.32,
'M', 55, 77.32, 'A', 10, 20, 60, 30, 50, 80
],
path);
},
testRepeatedArc2() {
const path = new Path();
path.arc(50, 60, 10, 20, 30, 30, false);
path.arc(50, 60, 10, 20, 60, 30, true);
graphics.assertPathEquals(
[
'M', 58.66, 70, 'A', 10, 20, 30, 30, 55, 77.32, 'A', 10, 20, 60, 30,
50, 80
],
path);
},
testCompleteCircle() {
const path = new Path();
path.arc(0, 0, 10, 10, 0, 360, false);
assertFalse(path.isSimple());
const p = path.getCurrentPoint();
assertRoughlyEquals(10, p[0], 0.01);
assertRoughlyEquals(0, p[1], 0.01);
graphics.assertPathEquals(['M', 10, 0, 'A', 10, 10, 0, 360, 10, 0], path);
},
/** @suppress {checkTypes} suppression added to enable type checking */
testClose() {
const path = new Path();
try {
path.close();
fail();
} catch (e) {
// Expected
assertEquals('Path cannot start with close', e.message);
}
path.moveTo(0, 0);
path.lineTo(10, 20, 30, 40, 50, 60);
path.close();
assertTrue(path.isSimple());
assertObjectEquals([0, 0], path.getCurrentPoint());
graphics.assertPathEquals(
['M', 0, 0, 'L', 10, 20, 30, 40, 50, 60, 'X'], path);
},
testClear() {
const path = new Path();
path.moveTo(0, 0);
path.arc(50, 60, 10, 20, 30, 30, false);
path.clear();
assertTrue(path.isSimple());
assertNull(path.getCurrentPoint());
graphics.assertPathEquals([], path);
},
testCreateSimplifiedPath() {
let path = new Path();
path.moveTo(0, 0);
path.arc(50, 60, 10, 20, 30, 30, false);
assertFalse(path.isSimple());
path = Path.createSimplifiedPath(path);
assertTrue(path.isSimple());
const p = path.getCurrentPoint();
assertEquals(55, p[0]);
assertRoughlyEquals(77.32, p[1], 0.01);
graphics.assertPathEquals(
['M', 58.66, 70, 'C', 57.78, 73.04, 56.52, 75.57, 55, 77.32], path);
},
testCreateSimplifiedPath2() {
let path = new Path();
path.arc(50, 60, 10, 20, 30, 30, false);
path.arc(50, 60, 10, 20, 60, 30, false);
assertFalse(path.isSimple());
path = Path.createSimplifiedPath(path);
assertTrue(path.isSimple());
graphics.assertPathEquals(
[
'M', 58.66, 70, 'C', 57.78, 73.04, 56.52, 75.57, 55, 77.32,
'M', 55, 77.32, 'C', 53.48, 79.08, 51.76, 80, 50, 80
],
path);
},
testCreateSimplifiedPath3() {
let path = new Path();
path.arc(50, 60, 10, 20, 30, 30, false);
path.arc(50, 60, 10, 20, 60, 30, true);
path.close();
path = Path.createSimplifiedPath(path);
graphics.assertPathEquals(
[
'M', 58.66, 70, 'C', 57.78, 73.04, 56.52, 75.57, 55, 77.32, 53.48,
79.08, 51.76, 80, 50, 80, 'X'
],
path);
const p = path.getCurrentPoint();
assertRoughlyEquals(58.66, p[0], 0.01);
assertRoughlyEquals(70, p[1], 0.01);
},
/** @suppress {checkTypes} suppression added to enable type checking */
testArcToAsCurves() {
const path = new Path();
path.moveTo(58.66, 70);
path.arcToAsCurves(10, 20, 30, 30, false);
graphics.assertPathEquals(
['M', 58.66, 70, 'C', 57.78, 73.04, 56.52, 75.57, 55, 77.32], path);
},
testCreateTransformedPath() {
const path = new Path();
path.moveTo(0, 0);
path.lineTo(0, 10, 10, 10, 10, 0);
path.close();
const tx = new AffineTransform(2, 0, 0, 3, 10, 20);
const path2 = path.createTransformedPath(tx);
graphics.assertPathEquals(
['M', 0, 0, 'L', 0, 10, 10, 10, 10, 0, 'X'], path);
graphics.assertPathEquals(
['M', 10, 20, 'L', 10, 50, 30, 50, 30, 20, 'X'], path2);
},
testTransform() {
const path = new Path();
path.moveTo(0, 0);
path.lineTo(0, 10, 10, 10, 10, 0);
path.close();
const tx = new AffineTransform(2, 0, 0, 3, 10, 20);
const path2 = path.transform(tx);
assertTrue(path === path2);
graphics.assertPathEquals(
['M', 10, 20, 'L', 10, 50, 30, 50, 30, 20, 'X'], path2);
},
testTransformCurrentAndClosePoints() {
const path = new Path();
path.moveTo(0, 0);
assertObjectEquals([0, 0], path.getCurrentPoint());
path.transform(new AffineTransform(1, 0, 0, 1, 10, 20));
assertObjectEquals([10, 20], path.getCurrentPoint());
path.lineTo(50, 50);
path.close();
assertObjectEquals([10, 20], path.getCurrentPoint());
},
testTransformNonSimple() {
const path = new Path();
path.arc(50, 60, 10, 20, 30, 30, false);
assertThrows(() => {
path.transform(new AffineTransform(1, 0, 0, 1, 10, 20));
});
},
testAppendPath() {
const path1 = new Path();
path1.moveTo(0, 0);
path1.lineTo(0, 10, 10, 10, 10, 0);
path1.close();
const path2 = new Path();
path2.arc(50, 60, 10, 20, 30, 30, false);
assertTrue(path1.isSimple());
path1.appendPath(path2);
assertFalse(path1.isSimple());
graphics.assertPathEquals(
[
'M', 0, 0, 'L', 0, 10, 10, 10, 10, 0, 'X',
'M', 58.66, 70, 'A', 10, 20, 30, 30, 55, 77.32,
],
path1);
},
testIsEmpty() {
const path = new Path();
assertTrue('Initially path is empty', path.isEmpty());
path.moveTo(0, 0);
assertFalse('After command addition, path is not empty', path.isEmpty());
path.clear();
assertTrue('After clear, path is empty again', path.isEmpty());
},
});
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