Add superellipse corner support for smoother, more flexible UI shapes #7636
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This feature introduces superellipse (squircle) corner rendering capabilities: - Add CornerShape enum with support for circular, superellipse, and custom shapes - Implement Superellipse struct with configurable n-value for controlling corner curves - Update tessellator to properly render superellipse corners with adjustable precision - Add corner shape properties to Style and Window decorations - Include demo in WidgetGallery showcasing various corner shapes and values - Extend CornerRadius types with shape information while maintaining backward compatibility The implementation allows for more modern and aesthetically pleasing UI designs, particularly useful for creating softer interfaces with Apple-style squircle corners.
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in the clippy.toml: disallowed-methods = [
# NOTE: There are many things that aren't allowed on wasm,
# but we cannot disable them all here (because of e.g. https://github.com/rust-lang/rust-clippy/issues/10406)
# so we do that in `clipppy_wasm.toml` instead.
{ path = "std::env::temp_dir", readon = "Use the tempfile crate instead" },
{ path = "std::panic::catch_unwind", reason = "We compile with `panic = abort" },
{ path = "std::thread::spawn", readon = "Use `std::thread::Builder` and name the thread" },
]
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This feature introduces superellipse (squircle) corner rendering capabilities that enable modern UI aesthetics similar to Apple's design language:
🎨 Features
🔧 Implementation Details
CornerShapeenum with variants for different corner typesSuperellipsewith configurable exponent value🎯 Benefits
📸 Screenshots
20251015-134831.mp4
✅ Checklist
cargo fmtandcargo clippy./scripts/check.sh📝 Related Issues
🤝 Additional Notes
This implementation provides a foundation for more flexible UI design in egui, allowing developers to create more visually appealing applications with modern corner styling options.