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41 lines
1.4 KiB
Dart
41 lines
1.4 KiB
Dart
// Copyright 2014 The Flutter Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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import 'package:flutter/physics.dart';
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import 'package:flutter_test/flutter_test.dart';
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void main() {
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test('Clamped simulation 1', () {
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final GravitySimulation gravity = GravitySimulation(9.81, 10.0, 0.0, 0.0);
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final ClampedSimulation clamped = ClampedSimulation(gravity, xMin: 20.0, xMax: 100.0, dxMin: 7.0, dxMax: 11.0);
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expect(clamped.x(0.0), equals(20.0));
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expect(clamped.dx(0.0), equals(7.0));
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expect(clamped.x(100.0), equals(100.0));
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expect(clamped.dx(100.0), equals(11.0));
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});
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test('Clamped simulation 2', () {
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final GravitySimulation gravity = GravitySimulation(-10, 0.0, 6.0, 10.0);
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final ClampedSimulation clamped = ClampedSimulation(gravity, xMin: 0.0, xMax: 2.5, dxMin: -1.0, dxMax: 1.0);
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expect(clamped.x(0.0), equals(0.0));
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expect(clamped.dx(0.0), equals(1.0));
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expect(clamped.isDone(0.0), isFalse);
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expect(clamped.x(1.0), equals(2.5));
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expect(clamped.dx(1.0), equals(0.0));
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expect(clamped.isDone(0.2), isFalse);
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expect(clamped.x(2.0), equals(0.0));
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expect(clamped.dx(2.0), equals(-1.0));
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expect(clamped.isDone(2.0), isFalse);
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expect(clamped.x(3.0), equals(0.0));
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expect(clamped.dx(3.0), equals(-1.0));
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expect(clamped.isDone(3.0), isTrue);
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});
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}
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