Robert Nystrom
4cc31f8f4f
There are no behavioral changes here, I just ran `dart format` on the `tests/lib/html/` directory. Change-Id: I221b2a370adc393e49621db1d37aa6eeb09b3015 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/425329 Reviewed-by: Srujan Gaddam <srujzs@google.com> Auto-Submit: Bob Nystrom <rnystrom@google.com> Commit-Queue: Bob Nystrom <rnystrom@google.com>
116 lines
3.4 KiB
Dart
116 lines
3.4 KiB
Dart
// Copyright (c) 2020, the Dart project authors. Please see the AUTHORS file
|
|
// for details. All rights reserved. Use of this source code is governed by a
|
|
// BSD-style license that can be found in the LICENSE file.
|
|
|
|
library canvas_rendering_context_2d_test;
|
|
|
|
import 'dart:html';
|
|
import 'dart:math';
|
|
|
|
import 'canvas_rendering_util.dart';
|
|
import 'package:expect/legacy/minitest.dart'; // ignore: deprecated_member_use_from_same_package
|
|
|
|
main() {
|
|
setUp(setupFunc);
|
|
tearDown(tearDownFunc);
|
|
|
|
test('default arc should be clockwise', () {
|
|
context.beginPath();
|
|
final r = 10;
|
|
|
|
// Center of arc.
|
|
final cx = 20;
|
|
final cy = 20;
|
|
// Arc centered at (20, 20) with radius 10 will go clockwise
|
|
// from (20 + r, 20) to (20, 20 + r), which is 1/4 of a circle.
|
|
context.arc(cx, cy, r, 0, pi / 2);
|
|
|
|
context.strokeStyle = 'green';
|
|
context.lineWidth = 2;
|
|
context.stroke();
|
|
|
|
// Center should not be filled.
|
|
expectPixelUnfilled(cx, cy);
|
|
|
|
// (cx + r, cy) should be filled.
|
|
expectPixelFilled(cx + r, cy, true);
|
|
// (cx, cy + r) should be filled.
|
|
expectPixelFilled(cx, cy + r, true);
|
|
// (cx - r, cy) should be empty.
|
|
expectPixelFilled(cx - r, cy, false);
|
|
// (cx, cy - r) should be empty.
|
|
expectPixelFilled(cx, cy - r, false);
|
|
|
|
// (cx + r/SQRT2, cy + r/SQRT2) should be filled.
|
|
expectPixelFilled((cx + r / sqrt2).toInt(), (cy + r / sqrt2).toInt(), true);
|
|
|
|
// (cx - r/SQRT2, cy - r/SQRT2) should be empty.
|
|
expectPixelFilled(
|
|
(cx - r / sqrt2).toInt(),
|
|
(cy + r / sqrt2).toInt(),
|
|
false,
|
|
);
|
|
|
|
// (cx + r/SQRT2, cy + r/SQRT2) should be empty.
|
|
expectPixelFilled(
|
|
(cx - r / sqrt2).toInt(),
|
|
(cy - r / sqrt2).toInt(),
|
|
false,
|
|
);
|
|
|
|
// (cx - r/SQRT2, cy - r/SQRT2) should be empty.
|
|
expectPixelFilled(
|
|
(cx + r / sqrt2).toInt(),
|
|
(cy - r / sqrt2).toInt(),
|
|
false,
|
|
);
|
|
});
|
|
|
|
test('arc anticlockwise', () {
|
|
context.beginPath();
|
|
final r = 10;
|
|
|
|
// Center of arc.
|
|
final cx = 20;
|
|
final cy = 20;
|
|
// Arc centered at (20, 20) with radius 10 will go anticlockwise
|
|
// from (20 + r, 20) to (20, 20 + r), which is 3/4 of a circle.
|
|
// Because of the way arc work, when going anti-clockwise, the end points
|
|
// are not included, so small values are added to radius to make a little
|
|
// more than a 3/4 circle.
|
|
context.arc(cx, cy, r, .1, pi / 2 - .1, true);
|
|
|
|
context.strokeStyle = 'green';
|
|
context.lineWidth = 2;
|
|
context.stroke();
|
|
|
|
// Center should not be filled.
|
|
expectPixelUnfilled(cx, cy);
|
|
|
|
// (cx + r, cy) should be filled.
|
|
expectPixelFilled(cx + r, cy, true);
|
|
// (cx, cy + r) should be filled.
|
|
expectPixelFilled(cx, cy + r, true);
|
|
// (cx - r, cy) should be filled.
|
|
expectPixelFilled(cx - r, cy, true);
|
|
// (cx, cy - r) should be filled.
|
|
expectPixelFilled(cx, cy - r, true);
|
|
|
|
// (cx + r/SQRT2, cy + r/SQRT2) should be empty.
|
|
expectPixelFilled(
|
|
(cx + r / sqrt2).toInt(),
|
|
(cy + r / sqrt2).toInt(),
|
|
false,
|
|
);
|
|
|
|
// (cx - r/SQRT2, cy - r/SQRT2) should be filled.
|
|
expectPixelFilled((cx - r / sqrt2).toInt(), (cy + r / sqrt2).toInt(), true);
|
|
|
|
// (cx + r/SQRT2, cy + r/SQRT2) should be filled.
|
|
expectPixelFilled((cx - r / sqrt2).toInt(), (cy - r / sqrt2).toInt(), true);
|
|
|
|
// (cx - r/SQRT2, cy - r/SQRT2) should be filled.
|
|
expectPixelFilled((cx + r / sqrt2).toInt(), (cy - r / sqrt2).toInt(), true);
|
|
});
|
|
}
|