bevy/crates
Joona Aalto ac1f135e20
Add meshing for Cone (#11820)
# Objective

The `Cone` primitive should support meshing.

## Solution

Implement meshing for the `Cone` primitive. The default cone has a
height of 1 and a base radius of 0.5, and is centered at the origin.

An issue with cone meshes is that the tip does not really have a normal
that works, even with duplicated vertices. This PR uses only a single
vertex for the tip, with a normal of zero; this results in an "invalid"
normal that gets ignored by the fragment shader. This seems to be the
only approach we have for perfectly smooth cones. For discussion on the
topic, see #10298 and #5891.

Another thing to note is that the cone uses polar coordinates for the
UVs:

<img
src="https://github.com/bevyengine/bevy/assets/57632562/e101ded9-110a-4ac4-a98d-f1e4d740a24a"
alt="cone" width="400" />

This way, textures are applied as if looking at the cone from above:

<img
src="https://github.com/bevyengine/bevy/assets/57632562/8dea00f1-a283-4bc4-9676-91e8d4adb07a"
alt="texture" width="200" />

<img
src="https://github.com/bevyengine/bevy/assets/57632562/d9d1b5e6-a8ba-4690-b599-904dd85777a1"
alt="cone" width="200" />
2024-05-13 18:00:59 +00:00
..
bevy_a11y Add README.md to all crates (#13184) 2024-05-02 18:56:00 +00:00
bevy_animation Remove ClampColor (#13307) 2024-05-10 13:15:56 +00:00
bevy_app Separate state crate (#13216) 2024-05-09 18:06:05 +00:00
bevy_asset bevy_asset: Add missing web-sys feature and cleanup unused ones (#13281) 2024-05-12 20:53:59 +00:00
bevy_audio Add README.md to all crates (#13184) 2024-05-02 18:56:00 +00:00
bevy_color Remove ClampColor (#13307) 2024-05-10 13:15:56 +00:00
bevy_core bevy_core: Derive useful traits on FrameCount (#13291) 2024-05-10 10:00:08 +00:00
bevy_core_pipeline Fix incorrect workgroupBarrier and OOB array access in auto_exposure (#13283) 2024-05-12 23:24:58 +00:00
bevy_derive Update compile test to use ui_test 0.23 (#13245) 2024-05-05 22:17:56 +00:00
bevy_dev_tools new format for ci config file (#13154) 2024-05-02 22:51:47 +00:00
bevy_diagnostic Add README.md to all crates (#13184) 2024-05-02 18:56:00 +00:00
bevy_dylib Add README.md to all crates (#13184) 2024-05-02 18:56:00 +00:00
bevy_dynamic_plugin Add README.md to all crates (#13184) 2024-05-02 18:56:00 +00:00
bevy_ecs Separate state crate (#13216) 2024-05-09 18:06:05 +00:00
bevy_encase_derive Add README.md to all crates (#13184) 2024-05-02 18:56:00 +00:00
bevy_gilrs Add README.md to all crates (#13184) 2024-05-02 18:56:00 +00:00
bevy_gizmos gizmos: take normal of normal on plane 3d before rotation (#13326) 2024-05-11 19:32:31 +00:00
bevy_gltf Implement clearcoat per the Filament and the KHR_materials_clearcoat specifications. (#13031) 2024-05-05 22:57:05 +00:00
bevy_hierarchy Add README.md to all crates (#13184) 2024-05-02 18:56:00 +00:00
bevy_input Separate state crate (#13216) 2024-05-09 18:06:05 +00:00
bevy_internal Separate state crate (#13216) 2024-05-09 18:06:05 +00:00
bevy_log Improve tracing layer customization (#13159) 2024-05-12 21:16:56 +00:00
bevy_macro_utils Add README.md to all crates (#13184) 2024-05-02 18:56:00 +00:00
bevy_math Add meshing for Cone (#11820) 2024-05-13 18:00:59 +00:00
bevy_mikktspace Update glam version requirement from 0.25 to 0.27 (#12757) 2024-05-02 18:42:34 +00:00
bevy_pbr remove unused warnings in release (#13344) 2024-05-12 22:30:34 +00:00
bevy_ptr Add README.md to all crates (#13184) 2024-05-02 18:56:00 +00:00
bevy_reflect Avoid bevy_reflect::List::iter wrapping in release mode (#13271) 2024-05-12 15:01:05 +00:00
bevy_render Add meshing for Cone (#11820) 2024-05-13 18:00:59 +00:00
bevy_scene Add README.md to all crates (#13184) 2024-05-02 18:56:00 +00:00
bevy_sprite Clean up 2d render phases (#12982) 2024-05-08 08:13:39 +00:00
bevy_state State example (#13322) 2024-05-13 13:03:42 +00:00
bevy_tasks multi_threaded feature rename (#12997) 2024-05-06 20:49:32 +00:00
bevy_text Add doc comments explaining the different behaviours of alignment and Anchor with text_2d (#8022) 2024-05-12 21:42:04 +00:00
bevy_time Make bevy_time optionally depend on bevy_reflect (#13263) 2024-05-12 23:19:07 +00:00
bevy_transform Use Dir3 for local axis methods in GlobalTransform (#13264) 2024-05-06 20:52:05 +00:00
bevy_ui Clean up 2d render phases (#12982) 2024-05-08 08:13:39 +00:00
bevy_utils Add README.md to all crates (#13184) 2024-05-02 18:56:00 +00:00
bevy_window Ensure clean exit (#13236) 2024-05-12 15:56:01 +00:00
bevy_winit Ensure clean exit (#13236) 2024-05-12 15:56:01 +00:00