mirror of
https://github.com/flutter/flutter.git
synced 2026-02-20 02:29:02 +08:00
9d96df2364
WIP Commits separated as follows: - Update lints in analysis_options files - Run `dart fix --apply` - Clean up leftover analysis issues - Run `dart format .` in the right places. Local analysis and testing passes. Checking CI now. Part of https://github.com/flutter/flutter/issues/178827 - Adoption of flutter_lints in examples/api coming in a separate change (cc @loic-sharma) ## Pre-launch Checklist - [ ] I read the [Contributor Guide] and followed the process outlined there for submitting PRs. - [ ] I read the [Tree Hygiene] wiki page, which explains my responsibilities. - [ ] I read and followed the [Flutter Style Guide], including [Features we expect every widget to implement]. - [ ] I signed the [CLA]. - [ ] I listed at least one issue that this PR fixes in the description above. - [ ] I updated/added relevant documentation (doc comments with `///`). - [ ] I added new tests to check the change I am making, or this PR is [test-exempt]. - [ ] I followed the [breaking change policy] and added [Data Driven Fixes] where supported. - [ ] All existing and new tests are passing. If you need help, consider asking for advice on the #hackers-new channel on [Discord]. **Note**: The Flutter team is currently trialing the use of [Gemini Code Assist for GitHub](https://developers.google.com/gemini-code-assist/docs/review-github-code). Comments from the `gemini-code-assist` bot should not be taken as authoritative feedback from the Flutter team. If you find its comments useful you can update your code accordingly, but if you are unsure or disagree with the feedback, please feel free to wait for a Flutter team member's review for guidance on which automated comments should be addressed. <!-- Links --> [Contributor Guide]: https://github.com/flutter/flutter/blob/main/docs/contributing/Tree-hygiene.md#overview [Tree Hygiene]: https://github.com/flutter/flutter/blob/main/docs/contributing/Tree-hygiene.md [test-exempt]: https://github.com/flutter/flutter/blob/main/docs/contributing/Tree-hygiene.md#tests [Flutter Style Guide]: https://github.com/flutter/flutter/blob/main/docs/contributing/Style-guide-for-Flutter-repo.md [Features we expect every widget to implement]: https://github.com/flutter/flutter/blob/main/docs/contributing/Style-guide-for-Flutter-repo.md#features-we-expect-every-widget-to-implement [CLA]: https://cla.developers.google.com/ [flutter/tests]: https://github.com/flutter/tests [breaking change policy]: https://github.com/flutter/flutter/blob/main/docs/contributing/Tree-hygiene.md#handling-breaking-changes [Discord]: https://github.com/flutter/flutter/blob/main/docs/contributing/Chat.md [Data Driven Fixes]: https://github.com/flutter/flutter/blob/main/docs/contributing/Data-driven-Fixes.md
611 lines
22 KiB
Dart
611 lines
22 KiB
Dart
// Copyright 2014 The Flutter Authors. All rights reserved.
|
|
// Use of this source code is governed by a BSD-style license that can be
|
|
// found in the LICENSE file.
|
|
|
|
import 'dart:math' as math;
|
|
|
|
import 'package:flutter/widgets.dart';
|
|
import 'package:flutter_test/flutter_test.dart';
|
|
|
|
void main() {
|
|
test('toString control test', () {
|
|
expect(Curves.linear, hasOneLineDescription);
|
|
expect(const SawTooth(3), hasOneLineDescription);
|
|
expect(const Interval(0.25, 0.75), hasOneLineDescription);
|
|
expect(const Interval(0.25, 0.75, curve: Curves.ease), hasOneLineDescription);
|
|
expect(const Split(0.25, beginCurve: Curves.ease), hasOneLineDescription);
|
|
});
|
|
|
|
test('Curve flipped control test', () {
|
|
const Curve ease = Curves.ease;
|
|
final Curve flippedEase = ease.flipped;
|
|
expect(flippedEase.transform(0.0), lessThan(0.001));
|
|
expect(flippedEase.transform(0.5), lessThan(ease.transform(0.5)));
|
|
expect(flippedEase.transform(1.0), greaterThan(0.999));
|
|
expect(flippedEase, hasOneLineDescription);
|
|
});
|
|
|
|
test('Threshold has a threshold', () {
|
|
const Curve step = Threshold(0.25);
|
|
expect(step.transform(0.0), 0.0);
|
|
expect(step.transform(0.24), 0.0);
|
|
expect(step.transform(0.25), 1.0);
|
|
expect(step.transform(0.26), 1.0);
|
|
expect(step.transform(1.0), 1.0);
|
|
});
|
|
|
|
void assertMaximumSlope(Curve curve, double maximumSlope) {
|
|
const delta = 0.005;
|
|
for (var x = 0.0; x < 1.0 - delta; x += delta) {
|
|
final double deltaY = curve.transform(x) - curve.transform(x + delta);
|
|
assert(deltaY.abs() < delta * maximumSlope, '$curve discontinuous at $x');
|
|
}
|
|
}
|
|
|
|
test('Curve is continuous', () {
|
|
assertMaximumSlope(Curves.linear, 20.0);
|
|
assertMaximumSlope(Curves.decelerate, 20.0);
|
|
assertMaximumSlope(Curves.fastOutSlowIn, 20.0);
|
|
assertMaximumSlope(Curves.slowMiddle, 20.0);
|
|
assertMaximumSlope(Curves.bounceIn, 20.0);
|
|
assertMaximumSlope(Curves.bounceOut, 20.0);
|
|
assertMaximumSlope(Curves.bounceInOut, 20.0);
|
|
assertMaximumSlope(Curves.elasticOut, 20.0);
|
|
assertMaximumSlope(Curves.elasticInOut, 20.0);
|
|
assertMaximumSlope(Curves.ease, 20.0);
|
|
|
|
assertMaximumSlope(Curves.easeIn, 20.0);
|
|
assertMaximumSlope(Curves.easeInSine, 20.0);
|
|
assertMaximumSlope(Curves.easeInQuad, 20.0);
|
|
assertMaximumSlope(Curves.easeInCubic, 20.0);
|
|
assertMaximumSlope(Curves.easeInQuart, 20.0);
|
|
assertMaximumSlope(Curves.easeInQuint, 20.0);
|
|
assertMaximumSlope(Curves.easeInExpo, 20.0);
|
|
assertMaximumSlope(Curves.easeInCirc, 20.0);
|
|
|
|
assertMaximumSlope(Curves.easeOut, 20.0);
|
|
assertMaximumSlope(Curves.easeOutSine, 20.0);
|
|
assertMaximumSlope(Curves.easeOutQuad, 20.0);
|
|
assertMaximumSlope(Curves.easeOutCubic, 20.0);
|
|
assertMaximumSlope(Curves.easeInOutCubicEmphasized, 20.0);
|
|
assertMaximumSlope(Curves.easeOutQuart, 20.0);
|
|
assertMaximumSlope(Curves.easeOutQuint, 20.0);
|
|
assertMaximumSlope(Curves.easeOutExpo, 20.0);
|
|
assertMaximumSlope(Curves.easeOutCirc, 20.0);
|
|
|
|
// Curves.easeInOutExpo is discontinuous at its midpoint, so not included
|
|
// here
|
|
|
|
assertMaximumSlope(Curves.easeInOut, 20.0);
|
|
assertMaximumSlope(Curves.easeInOutSine, 20.0);
|
|
assertMaximumSlope(Curves.easeInOutQuad, 20.0);
|
|
assertMaximumSlope(Curves.easeInOutCubic, 20.0);
|
|
assertMaximumSlope(Curves.easeInOutQuart, 20.0);
|
|
assertMaximumSlope(Curves.easeInOutQuint, 20.0);
|
|
assertMaximumSlope(Curves.easeInOutCirc, 20.0);
|
|
});
|
|
|
|
void expectStaysInBounds(Curve curve) {
|
|
expect(curve.transform(0.0), inInclusiveRange(0.0, 1.0));
|
|
expect(curve.transform(0.1), inInclusiveRange(0.0, 1.0));
|
|
expect(curve.transform(0.2), inInclusiveRange(0.0, 1.0));
|
|
expect(curve.transform(0.3), inInclusiveRange(0.0, 1.0));
|
|
expect(curve.transform(0.4), inInclusiveRange(0.0, 1.0));
|
|
expect(curve.transform(0.5), inInclusiveRange(0.0, 1.0));
|
|
expect(curve.transform(0.6), inInclusiveRange(0.0, 1.0));
|
|
expect(curve.transform(0.7), inInclusiveRange(0.0, 1.0));
|
|
expect(curve.transform(0.8), inInclusiveRange(0.0, 1.0));
|
|
expect(curve.transform(0.9), inInclusiveRange(0.0, 1.0));
|
|
expect(curve.transform(1.0), inInclusiveRange(0.0, 1.0));
|
|
}
|
|
|
|
test('Bounce stays in bounds', () {
|
|
expectStaysInBounds(Curves.bounceIn);
|
|
expectStaysInBounds(Curves.bounceOut);
|
|
expectStaysInBounds(Curves.bounceInOut);
|
|
});
|
|
|
|
List<double> estimateBounds(Curve curve) {
|
|
final values = <double>[
|
|
curve.transform(0.0),
|
|
curve.transform(0.1),
|
|
curve.transform(0.2),
|
|
curve.transform(0.3),
|
|
curve.transform(0.4),
|
|
curve.transform(0.5),
|
|
curve.transform(0.6),
|
|
curve.transform(0.7),
|
|
curve.transform(0.8),
|
|
curve.transform(0.9),
|
|
curve.transform(1.0),
|
|
];
|
|
|
|
return <double>[values.reduce(math.min), values.reduce(math.max)];
|
|
}
|
|
|
|
test('Elastic overshoots its bounds', () {
|
|
expect(Curves.elasticIn, hasOneLineDescription);
|
|
expect(Curves.elasticOut, hasOneLineDescription);
|
|
expect(Curves.elasticInOut, hasOneLineDescription);
|
|
|
|
List<double> bounds;
|
|
bounds = estimateBounds(Curves.elasticIn);
|
|
expect(bounds[0], lessThan(0.0));
|
|
expect(bounds[1], lessThanOrEqualTo(1.0));
|
|
bounds = estimateBounds(Curves.elasticOut);
|
|
expect(bounds[0], greaterThanOrEqualTo(0.0));
|
|
expect(bounds[1], greaterThan(1.0));
|
|
bounds = estimateBounds(Curves.elasticInOut);
|
|
expect(bounds[0], lessThan(0.0));
|
|
expect(bounds[1], greaterThan(1.0));
|
|
});
|
|
|
|
test('Back overshoots its bounds', () {
|
|
expect(Curves.easeInBack, hasOneLineDescription);
|
|
expect(Curves.easeOutBack, hasOneLineDescription);
|
|
expect(Curves.easeInOutBack, hasOneLineDescription);
|
|
|
|
List<double> bounds;
|
|
bounds = estimateBounds(Curves.easeInBack);
|
|
expect(bounds[0], lessThan(0.0));
|
|
expect(bounds[1], lessThanOrEqualTo(1.0));
|
|
bounds = estimateBounds(Curves.easeOutBack);
|
|
expect(bounds[0], greaterThanOrEqualTo(0.0));
|
|
expect(bounds[1], greaterThan(1.0));
|
|
bounds = estimateBounds(Curves.easeInOutBack);
|
|
expect(bounds[0], lessThan(0.0));
|
|
expect(bounds[1], greaterThan(1.0));
|
|
});
|
|
|
|
test('Decelerate does so', () {
|
|
expect(Curves.decelerate, hasOneLineDescription);
|
|
|
|
final List<double> bounds = estimateBounds(Curves.decelerate);
|
|
expect(bounds[0], greaterThanOrEqualTo(0.0));
|
|
expect(bounds[1], lessThanOrEqualTo(1.0));
|
|
|
|
final double d1 = Curves.decelerate.transform(0.2) - Curves.decelerate.transform(0.0);
|
|
final double d2 = Curves.decelerate.transform(1.0) - Curves.decelerate.transform(0.8);
|
|
expect(d2, lessThan(d1));
|
|
});
|
|
|
|
test('ThreePointCubic interpolates midpoint', () {
|
|
const test = ThreePointCubic(
|
|
Offset(0.05, 0),
|
|
Offset(0.133333, 0.06),
|
|
Offset(0.166666, 0.4),
|
|
Offset(0.208333, 0.82),
|
|
Offset(0.25, 1),
|
|
);
|
|
expect(test.transform(0.166666), equals(0.4));
|
|
});
|
|
|
|
test('Invalid transform parameter should assert', () {
|
|
expect(() => const SawTooth(2).transform(-0.0001), throwsAssertionError);
|
|
expect(() => const SawTooth(2).transform(1.0001), throwsAssertionError);
|
|
|
|
expect(() => const Interval(0.0, 1.0).transform(-0.0001), throwsAssertionError);
|
|
expect(() => const Interval(0.0, 1.0).transform(1.0001), throwsAssertionError);
|
|
|
|
expect(() => const Split(0.0).transform(-0.0001), throwsAssertionError);
|
|
expect(() => const Split(0.0).transform(1.0001), throwsAssertionError);
|
|
|
|
expect(() => const Threshold(0.5).transform(-0.0001), throwsAssertionError);
|
|
expect(() => const Threshold(0.5).transform(1.0001), throwsAssertionError);
|
|
|
|
expect(() => const ElasticInCurve().transform(-0.0001), throwsAssertionError);
|
|
expect(() => const ElasticInCurve().transform(1.0001), throwsAssertionError);
|
|
|
|
expect(() => const ElasticOutCurve().transform(-0.0001), throwsAssertionError);
|
|
expect(() => const ElasticOutCurve().transform(1.0001), throwsAssertionError);
|
|
|
|
expect(() => const Cubic(0.42, 0.0, 0.58, 1.0).transform(-0.0001), throwsAssertionError);
|
|
expect(() => const Cubic(0.42, 0.0, 0.58, 1.0).transform(1.0001), throwsAssertionError);
|
|
|
|
expect(() => Curves.easeInOutCubicEmphasized.transform(-0.0001), throwsAssertionError);
|
|
expect(() => Curves.easeInOutCubicEmphasized.transform(1.0001), throwsAssertionError);
|
|
|
|
expect(() => Curves.decelerate.transform(-0.0001), throwsAssertionError);
|
|
expect(() => Curves.decelerate.transform(1.0001), throwsAssertionError);
|
|
|
|
expect(() => Curves.bounceIn.transform(-0.0001), throwsAssertionError);
|
|
expect(() => Curves.bounceIn.transform(1.0001), throwsAssertionError);
|
|
|
|
expect(() => Curves.bounceOut.transform(-0.0001), throwsAssertionError);
|
|
expect(() => Curves.bounceOut.transform(1.0001), throwsAssertionError);
|
|
|
|
expect(() => Curves.bounceInOut.transform(-0.0001), throwsAssertionError);
|
|
expect(() => Curves.bounceInOut.transform(1.0001), throwsAssertionError);
|
|
});
|
|
|
|
test('Curve transform method should return 0.0 for t=0.0 and 1.0 for t=1.0', () {
|
|
expect(const SawTooth(2).transform(0), 0);
|
|
expect(const SawTooth(2).transform(1), 1);
|
|
|
|
expect(const Interval(0, 1).transform(0), 0);
|
|
expect(const Interval(0, 1).transform(1), 1);
|
|
|
|
expect(const Split(0.5).transform(0), 0);
|
|
expect(const Split(0.5).transform(1), 1);
|
|
|
|
expect(const Threshold(0.5).transform(0), 0);
|
|
expect(const Threshold(0.5).transform(1), 1);
|
|
|
|
expect(const ElasticInCurve().transform(0), 0);
|
|
expect(const ElasticInCurve().transform(1), 1);
|
|
|
|
expect(const ElasticOutCurve().transform(0), 0);
|
|
expect(const ElasticOutCurve().transform(1), 1);
|
|
|
|
expect(const ElasticInOutCurve().transform(0), 0);
|
|
expect(const ElasticInOutCurve().transform(1), 1);
|
|
|
|
expect(Curves.linear.transform(0), 0);
|
|
expect(Curves.linear.transform(1), 1);
|
|
|
|
expect(Curves.easeInOutExpo.transform(0), 0);
|
|
expect(Curves.easeInOutExpo.transform(1), 1);
|
|
|
|
expect(Curves.easeInOutCubicEmphasized.transform(0), 0);
|
|
expect(Curves.easeInOutCubicEmphasized.transform(1), 1);
|
|
|
|
expect(const FlippedCurve(Curves.easeInOutExpo).transform(0), 0);
|
|
expect(const FlippedCurve(Curves.easeInOutExpo).transform(1), 1);
|
|
|
|
expect(Curves.decelerate.transform(0), 0);
|
|
expect(Curves.decelerate.transform(1), 1);
|
|
|
|
expect(Curves.bounceIn.transform(0), 0);
|
|
expect(Curves.bounceIn.transform(1), 1);
|
|
|
|
expect(Curves.bounceOut.transform(0), 0);
|
|
expect(Curves.bounceOut.transform(1), 1);
|
|
|
|
expect(Curves.bounceInOut.transform(0), 0);
|
|
expect(Curves.bounceInOut.transform(1), 1);
|
|
});
|
|
|
|
test('Split interpolates values properly', () {
|
|
const curve = Split(0.3);
|
|
|
|
const tolerance = 1e-6;
|
|
expect(curve.transform(0.0), equals(0.0));
|
|
expect(curve.transform(0.1), equals(0.1));
|
|
expect(curve.transform(0.25), equals(0.25));
|
|
expect(curve.transform(0.3), equals(0.3));
|
|
expect(curve.transform(0.5), moreOrLessEquals(0.760461, epsilon: tolerance));
|
|
expect(curve.transform(0.75), moreOrLessEquals(0.962055, epsilon: tolerance));
|
|
expect(curve.transform(1.0), equals(1.0));
|
|
});
|
|
|
|
test('CatmullRomSpline interpolates values properly', () {
|
|
final curve = CatmullRomSpline(
|
|
const <Offset>[
|
|
Offset.zero,
|
|
Offset(0.01, 0.25),
|
|
Offset(0.2, 0.25),
|
|
Offset(0.33, 0.25),
|
|
Offset(0.5, 1.0),
|
|
Offset(0.66, 0.75),
|
|
Offset(1.0, 1.0),
|
|
],
|
|
startHandle: const Offset(0.0, -0.3),
|
|
endHandle: const Offset(1.3, 1.3),
|
|
);
|
|
const tolerance = 1e-6;
|
|
expect(curve.transform(0.0).dx, moreOrLessEquals(0.0, epsilon: tolerance));
|
|
expect(curve.transform(0.0).dy, moreOrLessEquals(0.0, epsilon: tolerance));
|
|
expect(curve.transform(0.25).dx, moreOrLessEquals(0.0966945, epsilon: tolerance));
|
|
expect(curve.transform(0.25).dy, moreOrLessEquals(0.2626806, epsilon: tolerance));
|
|
expect(curve.transform(0.5).dx, moreOrLessEquals(0.33, epsilon: tolerance));
|
|
expect(curve.transform(0.5).dy, moreOrLessEquals(0.25, epsilon: tolerance));
|
|
expect(curve.transform(0.75).dx, moreOrLessEquals(0.570260, epsilon: tolerance));
|
|
expect(curve.transform(0.75).dy, moreOrLessEquals(0.883085, epsilon: tolerance));
|
|
expect(curve.transform(1.0).dx, moreOrLessEquals(1.0, epsilon: tolerance));
|
|
expect(curve.transform(1.0).dy, moreOrLessEquals(1.0, epsilon: tolerance));
|
|
});
|
|
|
|
test('CatmullRomSpline enforces contract', () {
|
|
expect(() {
|
|
CatmullRomSpline(const <Offset>[]);
|
|
}, throwsAssertionError);
|
|
expect(() {
|
|
CatmullRomSpline(const <Offset>[Offset.zero]);
|
|
}, throwsAssertionError);
|
|
expect(() {
|
|
CatmullRomSpline(const <Offset>[Offset.zero, Offset.zero]);
|
|
}, throwsAssertionError);
|
|
expect(() {
|
|
CatmullRomSpline(const <Offset>[Offset.zero, Offset.zero, Offset.zero]);
|
|
}, throwsAssertionError);
|
|
expect(() {
|
|
CatmullRomSpline(const <Offset>[
|
|
Offset.zero,
|
|
Offset.zero,
|
|
Offset.zero,
|
|
Offset.zero,
|
|
], tension: -1.0);
|
|
}, throwsAssertionError);
|
|
expect(() {
|
|
CatmullRomSpline(const <Offset>[
|
|
Offset.zero,
|
|
Offset.zero,
|
|
Offset.zero,
|
|
Offset.zero,
|
|
], tension: 2.0);
|
|
}, throwsAssertionError);
|
|
expect(() {
|
|
CatmullRomSpline(const <Offset>[
|
|
Offset(double.infinity, 0.0),
|
|
Offset.zero,
|
|
Offset.zero,
|
|
Offset.zero,
|
|
]).generateSamples();
|
|
}, throwsAssertionError);
|
|
expect(() {
|
|
CatmullRomSpline(const <Offset>[
|
|
Offset(0.0, double.infinity),
|
|
Offset.zero,
|
|
Offset.zero,
|
|
Offset.zero,
|
|
]).generateSamples();
|
|
}, throwsAssertionError);
|
|
expect(() {
|
|
CatmullRomSpline(startHandle: const Offset(0.0, double.infinity), const <Offset>[
|
|
Offset.zero,
|
|
Offset.zero,
|
|
Offset.zero,
|
|
Offset.zero,
|
|
]).generateSamples();
|
|
}, throwsAssertionError);
|
|
expect(() {
|
|
CatmullRomSpline(endHandle: const Offset(0.0, double.infinity), const <Offset>[
|
|
Offset.zero,
|
|
Offset.zero,
|
|
Offset.zero,
|
|
Offset.zero,
|
|
]).generateSamples();
|
|
}, throwsAssertionError);
|
|
});
|
|
|
|
test('CatmullRomSpline interpolates values properly when precomputed', () {
|
|
final curve = CatmullRomSpline.precompute(
|
|
const <Offset>[
|
|
Offset.zero,
|
|
Offset(0.01, 0.25),
|
|
Offset(0.2, 0.25),
|
|
Offset(0.33, 0.25),
|
|
Offset(0.5, 1.0),
|
|
Offset(0.66, 0.75),
|
|
Offset(1.0, 1.0),
|
|
],
|
|
startHandle: const Offset(0.0, -0.3),
|
|
endHandle: const Offset(1.3, 1.3),
|
|
);
|
|
const tolerance = 1e-6;
|
|
expect(curve.transform(0.0).dx, moreOrLessEquals(0.0, epsilon: tolerance));
|
|
expect(curve.transform(0.0).dy, moreOrLessEquals(0.0, epsilon: tolerance));
|
|
expect(curve.transform(0.25).dx, moreOrLessEquals(0.0966945, epsilon: tolerance));
|
|
expect(curve.transform(0.25).dy, moreOrLessEquals(0.2626806, epsilon: tolerance));
|
|
expect(curve.transform(0.5).dx, moreOrLessEquals(0.33, epsilon: tolerance));
|
|
expect(curve.transform(0.5).dy, moreOrLessEquals(0.25, epsilon: tolerance));
|
|
expect(curve.transform(0.75).dx, moreOrLessEquals(0.570260, epsilon: tolerance));
|
|
expect(curve.transform(0.75).dy, moreOrLessEquals(0.883085, epsilon: tolerance));
|
|
expect(curve.transform(1.0).dx, moreOrLessEquals(1.0, epsilon: tolerance));
|
|
expect(curve.transform(1.0).dy, moreOrLessEquals(1.0, epsilon: tolerance));
|
|
});
|
|
|
|
test('CatmullRomSpline enforces contract when precomputed', () {
|
|
expect(() {
|
|
CatmullRomSpline.precompute(const <Offset>[]);
|
|
}, throwsAssertionError);
|
|
expect(() {
|
|
CatmullRomSpline.precompute(const <Offset>[Offset.zero]);
|
|
}, throwsAssertionError);
|
|
expect(() {
|
|
CatmullRomSpline.precompute(const <Offset>[Offset.zero, Offset.zero]);
|
|
}, throwsAssertionError);
|
|
expect(() {
|
|
CatmullRomSpline.precompute(const <Offset>[Offset.zero, Offset.zero, Offset.zero]);
|
|
}, throwsAssertionError);
|
|
expect(() {
|
|
CatmullRomSpline.precompute(const <Offset>[
|
|
Offset.zero,
|
|
Offset.zero,
|
|
Offset.zero,
|
|
Offset.zero,
|
|
], tension: -1.0);
|
|
}, throwsAssertionError);
|
|
expect(() {
|
|
CatmullRomSpline.precompute(const <Offset>[
|
|
Offset.zero,
|
|
Offset.zero,
|
|
Offset.zero,
|
|
Offset.zero,
|
|
], tension: 2.0);
|
|
}, throwsAssertionError);
|
|
expect(() {
|
|
CatmullRomSpline.precompute(const <Offset>[
|
|
Offset(double.infinity, 0.0),
|
|
Offset.zero,
|
|
Offset.zero,
|
|
Offset.zero,
|
|
]);
|
|
}, throwsAssertionError);
|
|
expect(() {
|
|
CatmullRomSpline.precompute(const <Offset>[
|
|
Offset(0.0, double.infinity),
|
|
Offset.zero,
|
|
Offset.zero,
|
|
Offset.zero,
|
|
]);
|
|
}, throwsAssertionError);
|
|
expect(() {
|
|
CatmullRomSpline.precompute(startHandle: const Offset(0.0, double.infinity), const <Offset>[
|
|
Offset.zero,
|
|
Offset.zero,
|
|
Offset.zero,
|
|
Offset.zero,
|
|
]);
|
|
}, throwsAssertionError);
|
|
expect(() {
|
|
CatmullRomSpline.precompute(endHandle: const Offset(0.0, double.infinity), const <Offset>[
|
|
Offset.zero,
|
|
Offset.zero,
|
|
Offset.zero,
|
|
Offset.zero,
|
|
]);
|
|
}, throwsAssertionError);
|
|
});
|
|
|
|
test('CatmullRomCurve interpolates given points correctly', () {
|
|
final curve = CatmullRomCurve(const <Offset>[
|
|
Offset(0.2, 0.25),
|
|
Offset(0.33, 0.25),
|
|
Offset(0.5, 1.0),
|
|
Offset(0.8, 0.75),
|
|
]);
|
|
|
|
// These values are approximations.
|
|
const tolerance = 1e-6;
|
|
expect(curve.transform(0.0), moreOrLessEquals(0.0, epsilon: tolerance));
|
|
expect(curve.transform(0.01), moreOrLessEquals(0.012874734350170863, epsilon: tolerance));
|
|
expect(curve.transform(0.2), moreOrLessEquals(0.24989646045277542, epsilon: tolerance));
|
|
expect(curve.transform(0.33), moreOrLessEquals(0.250037698527661, epsilon: tolerance));
|
|
expect(curve.transform(0.5), moreOrLessEquals(0.9999057323235939, epsilon: tolerance));
|
|
expect(curve.transform(0.6), moreOrLessEquals(0.9357294964536621, epsilon: tolerance));
|
|
expect(curve.transform(0.8), moreOrLessEquals(0.7500423402378034, epsilon: tolerance));
|
|
expect(curve.transform(1.0), moreOrLessEquals(1.0, epsilon: tolerance));
|
|
});
|
|
|
|
test('CatmullRomCurve interpolates given points correctly when precomputed', () {
|
|
final curve = CatmullRomCurve.precompute(const <Offset>[
|
|
Offset(0.2, 0.25),
|
|
Offset(0.33, 0.25),
|
|
Offset(0.5, 1.0),
|
|
Offset(0.8, 0.75),
|
|
]);
|
|
|
|
// These values are approximations.
|
|
const tolerance = 1e-6;
|
|
expect(curve.transform(0.0), moreOrLessEquals(0.0, epsilon: tolerance));
|
|
expect(curve.transform(0.01), moreOrLessEquals(0.012874734350170863, epsilon: tolerance));
|
|
expect(curve.transform(0.2), moreOrLessEquals(0.24989646045277542, epsilon: tolerance));
|
|
expect(curve.transform(0.33), moreOrLessEquals(0.250037698527661, epsilon: tolerance));
|
|
expect(curve.transform(0.5), moreOrLessEquals(0.9999057323235939, epsilon: tolerance));
|
|
expect(curve.transform(0.6), moreOrLessEquals(0.9357294964536621, epsilon: tolerance));
|
|
expect(curve.transform(0.8), moreOrLessEquals(0.7500423402378034, epsilon: tolerance));
|
|
expect(curve.transform(1.0), moreOrLessEquals(1.0, epsilon: tolerance));
|
|
});
|
|
|
|
test('CatmullRomCurve enforces contract', () {
|
|
expect(() {
|
|
CatmullRomCurve(const <Offset>[]);
|
|
}, throwsAssertionError);
|
|
expect(() {
|
|
CatmullRomCurve(const <Offset>[Offset.zero]);
|
|
}, throwsAssertionError);
|
|
expect(() {
|
|
CatmullRomCurve(const <Offset>[Offset.zero, Offset.zero]);
|
|
}, throwsAssertionError);
|
|
|
|
// Monotonically increasing in X.
|
|
expect(
|
|
CatmullRomCurve.validateControlPoints(const <Offset>[Offset(0.2, 0.25), Offset(0.01, 0.25)]),
|
|
isFalse,
|
|
);
|
|
expect(() {
|
|
CatmullRomCurve(const <Offset>[Offset(0.2, 0.25), Offset(0.01, 0.25)]);
|
|
}, throwsAssertionError);
|
|
|
|
// X within range (0.0, 1.0).
|
|
expect(
|
|
CatmullRomCurve.validateControlPoints(const <Offset>[Offset(0.2, 0.25), Offset(1.01, 0.25)]),
|
|
isFalse,
|
|
);
|
|
expect(() {
|
|
CatmullRomCurve(const <Offset>[Offset(0.2, 0.25), Offset(1.01, 0.25)]);
|
|
}, throwsAssertionError);
|
|
|
|
// Not multi-valued in Y at x=0.0.
|
|
expect(
|
|
CatmullRomCurve.validateControlPoints(const <Offset>[
|
|
Offset(0.05, 0.50),
|
|
Offset(0.50, 0.50),
|
|
Offset(0.75, 0.75),
|
|
]),
|
|
isFalse,
|
|
);
|
|
expect(() {
|
|
CatmullRomCurve(const <Offset>[Offset(0.05, 0.50), Offset(0.50, 0.50), Offset(0.75, 0.75)]);
|
|
}, throwsAssertionError);
|
|
|
|
// Not multi-valued in Y at x=1.0.
|
|
expect(
|
|
CatmullRomCurve.validateControlPoints(const <Offset>[
|
|
Offset(0.25, 0.25),
|
|
Offset(0.50, 0.50),
|
|
Offset(0.95, 0.51),
|
|
]),
|
|
isFalse,
|
|
);
|
|
expect(() {
|
|
CatmullRomCurve(const <Offset>[Offset(0.25, 0.25), Offset(0.50, 0.50), Offset(0.95, 0.51)]);
|
|
}, throwsAssertionError);
|
|
|
|
// Not multi-valued in Y in between x = 0.0 and x = 1.0.
|
|
expect(
|
|
CatmullRomCurve.validateControlPoints(const <Offset>[Offset(0.5, 0.05), Offset(0.5, 0.95)]),
|
|
isFalse,
|
|
);
|
|
expect(() {
|
|
CatmullRomCurve(const <Offset>[Offset(0.5, 0.05), Offset(0.5, 0.95)]);
|
|
}, throwsAssertionError);
|
|
});
|
|
|
|
test('CatmullRomCurve enforces contract when precomputed', () {
|
|
expect(() {
|
|
CatmullRomCurve.precompute(const <Offset>[]);
|
|
}, throwsAssertionError);
|
|
expect(() {
|
|
CatmullRomCurve.precompute(const <Offset>[Offset.zero]);
|
|
}, throwsAssertionError);
|
|
expect(() {
|
|
CatmullRomCurve.precompute(const <Offset>[Offset.zero, Offset.zero]);
|
|
}, throwsAssertionError);
|
|
|
|
// Monotonically increasing in X.
|
|
expect(() {
|
|
CatmullRomCurve.precompute(const <Offset>[Offset(0.2, 0.25), Offset(0.01, 0.25)]);
|
|
}, throwsAssertionError);
|
|
|
|
// X within range (0.0, 1.0).
|
|
expect(() {
|
|
CatmullRomCurve.precompute(const <Offset>[Offset(0.2, 0.25), Offset(1.01, 0.25)]);
|
|
}, throwsAssertionError);
|
|
|
|
// Not multi-valued in Y at x=0.0.
|
|
expect(() {
|
|
CatmullRomCurve.precompute(const <Offset>[
|
|
Offset(0.05, 0.50),
|
|
Offset(0.50, 0.50),
|
|
Offset(0.75, 0.75),
|
|
]);
|
|
}, throwsAssertionError);
|
|
|
|
// Not multi-valued in Y at x=1.0.
|
|
expect(() {
|
|
CatmullRomCurve.precompute(const <Offset>[
|
|
Offset(0.25, 0.25),
|
|
Offset(0.50, 0.50),
|
|
Offset(0.95, 0.51),
|
|
]);
|
|
}, throwsAssertionError);
|
|
|
|
// Not multi-valued in Y in between x = 0.0 and x = 1.0.
|
|
expect(() {
|
|
CatmullRomCurve.precompute(const <Offset>[Offset(0.5, 0.05), Offset(0.5, 0.95)]);
|
|
}, throwsAssertionError);
|
|
});
|
|
}
|