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use bevy::prelude::*; | ||
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/// A feature ID indicating the type of a geometric feature: a vertex, an edge, or (in 3D) a face. | ||
/// | ||
/// This type packs the feature type into the same value as the feature index, | ||
/// which indicates the specific vertex/edge/face that this ID belongs to. | ||
#[derive(Copy, Clone, Debug, Hash, PartialEq, Eq, Reflect)] | ||
#[cfg_attr(feature = "serialize", derive(serde::Serialize, serde::Deserialize))] | ||
#[cfg_attr(feature = "serialize", reflect(Serialize, Deserialize))] | ||
#[reflect(Debug, Hash, PartialEq)] | ||
pub struct PackedFeatureId(pub u32); | ||
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impl PackedFeatureId { | ||
/// Packed feature id identifying an unknown feature. | ||
pub const UNKNOWN: Self = Self(0); | ||
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const CODE_MASK: u32 = 0x3fff_ffff; | ||
const HEADER_MASK: u32 = !Self::CODE_MASK; | ||
const HEADER_VERTEX: u32 = 0b01 << 30; | ||
#[cfg(feature = "3d")] | ||
const HEADER_EDGE: u32 = 0b10 << 30; | ||
const HEADER_FACE: u32 = 0b11 << 30; | ||
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/// Converts a vertex feature id into a packed feature id. | ||
pub fn vertex(code: u32) -> Self { | ||
assert_eq!(code & Self::HEADER_MASK, 0); | ||
Self(Self::HEADER_VERTEX | code) | ||
} | ||
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/// Converts a edge feature id into a packed feature id. | ||
#[cfg(feature = "3d")] | ||
pub fn edge(code: u32) -> Self { | ||
assert_eq!(code & Self::HEADER_MASK, 0); | ||
Self(Self::HEADER_EDGE | code) | ||
} | ||
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/// Converts a face feature id into a packed feature id. | ||
pub fn face(code: u32) -> Self { | ||
assert_eq!(code & Self::HEADER_MASK, 0); | ||
Self(Self::HEADER_FACE | code) | ||
} | ||
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/// Is the identified feature a face? | ||
pub fn is_face(self) -> bool { | ||
self.0 & Self::HEADER_MASK == Self::HEADER_FACE | ||
} | ||
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/// Is the identified feature a vertex? | ||
pub fn is_vertex(self) -> bool { | ||
self.0 & Self::HEADER_MASK == Self::HEADER_VERTEX | ||
} | ||
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/// Is the identified feature an edge? | ||
#[cfg(feature = "3d")] | ||
pub fn is_edge(self) -> bool { | ||
self.0 & Self::HEADER_MASK == Self::HEADER_EDGE | ||
} | ||
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/// Is the identified feature unknown? | ||
pub fn is_unknown(self) -> bool { | ||
self == Self::UNKNOWN | ||
} | ||
} | ||
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impl From<u32> for PackedFeatureId { | ||
fn from(code: u32) -> Self { | ||
Self(code) | ||
} | ||
} | ||
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#[cfg(any(feature = "parry-f32", feature = "parry-f64"))] | ||
impl From<crate::parry::shape::PackedFeatureId> for PackedFeatureId { | ||
fn from(id: crate::parry::shape::PackedFeatureId) -> Self { | ||
Self(id.0) | ||
} | ||
} |
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