bevy/crates
Rob Parrett f8e0fc190a Add RegularPolygon and Circle meshes (#3730)
# Objective

Bevy users often want to create circles and other simple shapes.

All the machinery is in place to accomplish this, and there are external crates that help. But when writing code for e.g. a new bevy example, it's not really possible to draw a circle without bringing in a new asset, writing a bunch of scary looking mesh code, or adding a dependency.

In particular, this PR was inspired by this interaction in another PR: https://github.com/bevyengine/bevy/pull/3721#issuecomment-1016774535

## Solution

This PR adds `shape::RegularPolygon` and `shape::Circle` (which is just a `RegularPolygon` that defaults to a large number of sides)

## Discussion

There's a lot of ongoing discussion about shapes in <https://github.com/bevyengine/rfcs/pull/12> and at least one other lingering shape PR (although it seems incomplete).

That RFC currently includes `RegularPolygon` and `Circle` shapes, so I don't think that having working mesh generation code in the engine for those shapes would add much burden to an author of an implementation.

But if we'd prefer not to add additional shapes until after that's sorted out, I'm happy to close this for now.

## Alternatives for users

For any users stumbling on this issue, here are some plugins that will help if you need more shapes.

https://github.com/Nilirad/bevy_prototype_lyon
https://github.com/johanhelsing/bevy_smud
https://github.com/Weasy666/bevy_svg
https://github.com/redpandamonium/bevy_more_shapes
https://github.com/ForesightMiningSoftwareCorporation/bevy_polyline
2022-05-05 00:03:47 +00:00
..
bevy_animation Make AnimationClip::duration return value instead of reference (#4617) 2022-04-27 23:44:06 +00:00
bevy_app Make RunOnce a non-manual System impl (#3922) 2022-05-04 18:41:37 +00:00
bevy_asset Add file metadata to AssetIo (#2123) 2022-05-02 18:04:47 +00:00
bevy_audio Converted exclusive systems to parallel systems wherever possible (#2774) 2022-04-25 14:32:56 +00:00
bevy_core add #[reflect(Default)] to create default value for reflected types (#3733) 2022-05-03 19:20:13 +00:00
bevy_core_pipeline Do not create nor execute render passes which have no phase items to draw (#4643) 2022-05-02 20:22:30 +00:00
bevy_crevice Bump Bevy to 0.8.0-dev (#4505) 2022-04-17 23:04:52 +00:00
bevy_derive Decouple some dependencies (#3886) 2022-04-27 19:08:11 +00:00
bevy_diagnostic Bump Bevy to 0.8.0-dev (#4505) 2022-04-17 23:04:52 +00:00
bevy_dylib Bump Bevy to 0.8.0-dev (#4505) 2022-04-17 23:04:52 +00:00
bevy_dynamic_plugin Bump Bevy to 0.8.0-dev (#4505) 2022-04-17 23:04:52 +00:00
bevy_ecs bevy_ptr standalone crate (#4653) 2022-05-04 19:16:10 +00:00
bevy_ecs_compile_fail_tests Introduce tests for derive(WorldQuery) (#4625) 2022-04-28 21:06:20 +00:00
bevy_gilrs Change gamepad.rs tuples to normal structs (#4519) 2022-05-02 13:20:55 +00:00
bevy_gltf Bump Bevy to 0.8.0-dev (#4505) 2022-04-17 23:04:52 +00:00
bevy_hierarchy Bump Bevy to 0.8.0-dev (#4505) 2022-04-17 23:04:52 +00:00
bevy_input Change gamepad.rs tuples to normal structs (#4519) 2022-05-02 13:20:55 +00:00
bevy_internal bevy_ptr standalone crate (#4653) 2022-05-04 19:16:10 +00:00
bevy_log can specify chrome tracing file (#4618) 2022-05-03 15:35:04 +00:00
bevy_macro_utils Decouple some dependencies (#3886) 2022-04-27 19:08:11 +00:00
bevy_math Document bevy_math (#4591) 2022-04-26 18:23:29 +00:00
bevy_pbr Make Wireframe respect visible entities (#4660) 2022-05-04 22:28:16 +00:00
bevy_ptr bevy_ptr standalone crate (#4653) 2022-05-04 19:16:10 +00:00
bevy_reflect add #[reflect(Default)] to create default value for reflected types (#3733) 2022-05-03 19:20:13 +00:00
bevy_render Add RegularPolygon and Circle meshes (#3730) 2022-05-05 00:03:47 +00:00
bevy_scene Bump Bevy to 0.8.0-dev (#4505) 2022-04-17 23:04:52 +00:00
bevy_sprite Filter material handles on extraction (#4178) 2022-05-03 18:28:04 +00:00
bevy_tasks Remove unused CountdownEvent (#4290) 2022-04-26 21:20:12 +00:00
bevy_text add #[reflect(Default)] to create default value for reflected types (#3733) 2022-05-03 19:20:13 +00:00
bevy_transform add #[reflect(Default)] to create default value for reflected types (#3733) 2022-05-03 19:20:13 +00:00
bevy_ui add #[reflect(Default)] to create default value for reflected types (#3733) 2022-05-03 19:20:13 +00:00
bevy_utils Decouple some dependencies (#3886) 2022-04-27 19:08:11 +00:00
bevy_window Converted exclusive systems to parallel systems wherever possible (#2774) 2022-04-25 14:32:56 +00:00
bevy_winit Add infallible resource getters for WorldCell (#4104) 2022-04-25 23:19:13 +00:00