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Refactor CanvasRenderingContext2D.arc() and .ellipse() #25801

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merged 1 commit into from Feb 26, 2020
Merged

Refactor CanvasRenderingContext2D.arc() and .ellipse() #25801

merged 1 commit into from Feb 26, 2020

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pylbrecht commented Feb 19, 2020 •
edited

Refactor arc() and ellipse() to make use of lyon_geom::Arc for approximating an arc with quadratic bezier curves.

  • ./mach build -d does not report any errors
  • ./mach test-tidy does not report any errors
  • These changes fix part of #25331
  • There are tests for these changes
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pylbrecht commented Feb 19, 2020

These changes already fix some tests, but I'm trying to squeeze a few more passes out of it. So this is still WIP.
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pylbrecht commented Feb 19, 2020 •
edited

There are still some tests, I'd like to take a look at:

tests/wpt/metadata/2dcontext/path-objects/2d.path.arc.scale.2.html.ini
tests/wpt/metadata/2dcontext/path-objects/2d.path.arc.selfintersect.1.html.ini
tests/wpt/metadata/2dcontext/path-objects/2d.path.arc.selfintersect.2.html.ini
tests/wpt/metadata/2dcontext/path-objects/2d.path.arc.shape.3.html.ini
tests/wpt/metadata/2dcontext/path-objects/2d.path.arc.shape.4.html.ini
tests/wpt/metadata/2dcontext/path-objects/2d.path.arc.twopie.1.html.ini
tests/wpt/metadata/2dcontext/path-objects/2d.path.arc.twopie.3.html.ini

That's all there is left related to arc() (plus the offscreen-canvas equivalents), so I'm trying to make these pass as well and we're done with arc().
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pylbrecht commented Feb 21, 2020 •
edited

These tests depend on jrmuizel/raqote#96 being fixed:

tests/wpt/metadata/2dcontext/path-objects/2d.path.arc.scale.2.html.ini
tests/wpt/metadata/2dcontext/path-objects/2d.path.arc.selfintersect.1.html.ini
tests/wpt/metadata/2dcontext/path-objects/2d.path.arc.selfintersect.2.html.ini
tests/wpt/metadata/2dcontext/path-objects/2d.path.arc.shape.3.html.ini
tests/wpt/metadata/2dcontext/path-objects/2d.path.arc.shape.4.html.ini

This leaves only these two tests for now:

tests/wpt/metadata/2dcontext/path-objects/2d.path.arc.twopie.1.html.ini
tests/wpt/metadata/2dcontext/path-objects/2d.path.arc.twopie.3.html.ini

I'll make those pass and then I would leave it at that for this PR.
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pylbrecht commented Feb 23, 2020

@bors-servo try=wpt
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bors-servo commented Feb 23, 2020

⌛ Trying commit fbbbc87 with merge 14c1e1d...
bors-servo added a commit that referenced this pull request Feb 23, 2020
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Auto merge of #25801 - pylbrecht:arc.refactor, r=<try>
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14c1e1d 
Refactor CanvasRenderingContext2D.arc() and .ellipse()

<!-- Please describe your changes on the following line: -->
Refactor `arc()` and `ellipse()` to make use of `lyon_geom::Arc` for approximating an arc with quadratic bezier curves.

---
<!-- Thank you for contributing to Servo! Please replace each `[ ]` by `[X]` when the step is complete, and replace `___` with appropriate data: -->
- [x] `./mach build -d` does not report any errors
- [x] `./mach test-tidy` does not report any errors
- [x] These changes fix part of #25331

<!-- Either: -->
- [x] There are tests for these changes

<!-- Also, please make sure that "Allow edits from maintainers" checkbox is checked, so that we can help you if you get stuck somewhere along the way.-->

<!-- Pull requests that do not address these steps are welcome, but they will require additional verification as part of the review process. -->
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pylbrecht commented Feb 23, 2020 •
edited

@jdm, when all tests pass and you've approved the changes, I'd like to sqash the commits before this will be merged.
@pylbrecht pylbrecht force-pushed the pylbrecht:arc.refactor branch from fbbbc87 to 436f8ee Feb 23, 2020
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pylbrecht commented Feb 23, 2020

@bors-servo try=wpt
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bors-servo commented Feb 23, 2020

⌛ Trying commit 436f8ee with merge ff00e5f...
bors-servo added a commit that referenced this pull request Feb 23, 2020
@bors-servo
Auto merge of #25801 - pylbrecht:arc.refactor, r=<try>
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ff00e5f 
Refactor CanvasRenderingContext2D.arc() and .ellipse()

<!-- Please describe your changes on the following line: -->
Refactor `arc()` and `ellipse()` to make use of `lyon_geom::Arc` for approximating an arc with quadratic bezier curves.

---
<!-- Thank you for contributing to Servo! Please replace each `[ ]` by `[X]` when the step is complete, and replace `___` with appropriate data: -->
- [x] `./mach build -d` does not report any errors
- [x] `./mach test-tidy` does not report any errors
- [x] These changes fix part of #25331

<!-- Either: -->
- [x] There are tests for these changes

<!-- Also, please make sure that "Allow edits from maintainers" checkbox is checked, so that we can help you if you get stuck somewhere along the way.-->

<!-- Pull requests that do not address these steps are welcome, but they will require additional verification as part of the review process. -->
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bors-servo commented Feb 23, 2020

💔 Test failed - status-taskcluster
@pylbrecht pylbrecht force-pushed the pylbrecht:arc.refactor branch from 436f8ee to bd73dc0 Feb 24, 2020
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pylbrecht commented Feb 24, 2020 

4 unexpected results that are NOT known-intermittents:
  ▶ Unexpected subtest result in /offscreen-canvas/line-styles/2d.line.cap.round.html:
  └ PASS [expected FAIL] lineCap 'round' is rendered correctly
  ▶ Unexpected subtest result in /offscreen-canvas/line-styles/2d.line.join.round.html:
  │ FAIL [expected PASS] lineJoin 'round' is rendered correctly
  │   → assert_equals: Red channel of the pixel at (86, 14) expected 0 but got 255
  │ 
  │ _assertPixel@http://web-platform.test:8000/2dcontext/resources/canvas-tests.js:38:5
  │ @http://web-platform.test:8000/offscreen-canvas/line-styles/2d.line.join.round.html:59:1
  │ Test.prototype.step@http://web-platform.test:8000/resources/testharness.js:1867:25
  └ @http://web-platform.test:8000/offscreen-canvas/line-styles/2d.line.join.round.html:18:3
  ▶ Unexpected subtest result in /offscreen-canvas/line-styles/2d.line.cap.round.worker.html:
  └ PASS [expected FAIL] lineCap 'round' is rendered correctly
  ▶ Unexpected subtest result in /offscreen-canvas/line-styles/2d.line.join.round.worker.html:
  │ FAIL [expected PASS] lineJoin 'round' is rendered correctly
  │   → assert_equals: Red channel of the pixel at (86, 14) expected 0 but got 255
  │ 
  │ _assertPixel@http://web-platform.test:8000/2dcontext/resources/canvas-tests.js:38:5
  │ @http://web-platform.test:8000/offscreen-canvas/line-styles/2d.line.join.round.worker.js:55:1
  │ Test.prototype.step@http://web-platform.test:8000/resources/testharness.js:1867:25
  └ @http://web-platform.test:8000/offscreen-canvas/line-styles/2d.line.join.round.worker.js:14:3

I'm not exactly sure what happened with these tests, yet. Although they make use of arc(), I can't tell why my changes affect those tests. I'll investigate this.
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pylbrecht commented Feb 25, 2020

arc()s current implementation is flawed. Instead of drawing a full circle for start = 0; end = 2*PI, it draws nothing. I'm working on it.
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pylbrecht commented Feb 25, 2020

@bors-servo try=wpt
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bors-servo commented Feb 25, 2020

⌛ Trying commit 636f0ed with merge bd544b2...
bors-servo added a commit that referenced this pull request Feb 25, 2020
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Auto merge of #25801 - pylbrecht:arc.refactor, r=<try>
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bd544b2 
Refactor CanvasRenderingContext2D.arc() and .ellipse()

<!-- Please describe your changes on the following line: -->
Refactor `arc()` and `ellipse()` to make use of `lyon_geom::Arc` for approximating an arc with quadratic bezier curves.

---
<!-- Thank you for contributing to Servo! Please replace each `[ ]` by `[X]` when the step is complete, and replace `___` with appropriate data: -->
- [x] `./mach build -d` does not report any errors
- [x] `./mach test-tidy` does not report any errors
- [x] These changes fix part of #25331

<!-- Either: -->
- [x] There are tests for these changes

<!-- Also, please make sure that "Allow edits from maintainers" checkbox is checked, so that we can help you if you get stuck somewhere along the way.-->

<!-- Pull requests that do not address these steps are welcome, but they will require additional verification as part of the review process. -->
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pylbrecht commented Feb 25, 2020

@bors-servo try=wpt
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bors-servo commented Feb 25, 2020

⌛ Trying commit 7fa03bc with merge 56e750c...
bors-servo added a commit that referenced this pull request Feb 25, 2020
@bors-servo
Auto merge of #25801 - pylbrecht:arc.refactor, r=<try>
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This commit was created on GitHub.com and signed with a verified signature using GitHub’s key.
GPG key ID: 4AEE18F83AFDEB23 Learn about signing commits
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56e750c 
Refactor CanvasRenderingContext2D.arc() and .ellipse()

<!-- Please describe your changes on the following line: -->
Refactor `arc()` and `ellipse()` to make use of `lyon_geom::Arc` for approximating an arc with quadratic bezier curves.

---
<!-- Thank you for contributing to Servo! Please replace each `[ ]` by `[X]` when the step is complete, and replace `___` with appropriate data: -->
- [x] `./mach build -d` does not report any errors
- [x] `./mach test-tidy` does not report any errors
- [x] These changes fix part of #25331

<!-- Either: -->
- [x] There are tests for these changes

<!-- Also, please make sure that "Allow edits from maintainers" checkbox is checked, so that we can help you if you get stuck somewhere along the way.-->

<!-- Pull requests that do not address these steps are welcome, but they will require additional verification as part of the review process. -->
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pylbrecht commented Feb 25, 2020

I have a feeling that there may be a more elegant way of calculating the sweep. The checks for various edge cases seem like they could be reduced with some math tricks, but maybe I'm just overthinking.
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bors-servo commented Feb 25, 2020

☀️ Test successful - status-taskcluster
State: approved= try=True
@pylbrecht
Refactor arc() and ellipse() to use lyon_geom::Arc
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86ad6ed
@pylbrecht pylbrecht force-pushed the pylbrecht:arc.refactor branch from 7fa03bc to 86ad6ed Feb 26, 2020
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pylbrecht commented Feb 26, 2020

I sqashed the commits, so this is good to go from my side!
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jdm commented Feb 26, 2020

@bors-servo r+
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bors-servo commented Feb 26, 2020

📌 Commit 86ad6ed has been approved by jdm
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bors-servo commented Feb 26, 2020

⌛ Testing commit 86ad6ed with merge ad9bfc2...
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bors-servo commented Feb 26, 2020

☀️ Test successful - status-taskcluster
Approved by: jdm
Pushing ad9bfc2 to master...
@bors-servo bors-servo merged commit ad9bfc2 into servo:master Feb 26, 2020
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