Struct Collision 

pub struct Collision {
    pub positions: Vec<[f32; 3]>,
    pub triangles: Vec<[u32; 3]>,
    pub surfaces: Vec<u16>,
}

Collision geometry: a triangle soup in the entity’s own space, each triangle made of a surface.

Placed like a Mesh: on a prototype, by its Instances; on an entity with a Transform that is not a prototype, by that transform. A prototype may collide without drawing (no mesh) and draw without colliding. A triangle’s front is counter-clockwise (the world’s convention, as a mesh’s); soups need not be closed or connected. surfaces holds one index per triangle into the world’s Surfaces. What a collider was (a box, a capsule, a heightfield) stays in the reader’s dialect; this is the shape a consumer collides with.

Fields

positions: Vec<[f32; 3]>

triangles: Vec<[u32; 3]>

surfaces: Vec<u16>

Implementations

impl Collision

pub fn extend( &mut self, positions: &[[f32; 3]], triangles: &[[u32; 3]], surface: u16, f: impl Fn([f32; 3]) -> [f32; 3], )

Append another soup, its positions mapped by f, every triangle made of surface.

Trait Implementations

impl Clone for Collision

fn clone(&self) -> Self

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Component for Collision

fn apply_linear(&self, l: &Linear) -> Linearity<Self>

Positions mapped; triangles reversed under a mirror.

fn payload_bytes(&self) -> u64

12 bytes per position, 12 per triangle and 2 per surface index.

fn verify(&self, _e: Entity, w: &World) -> Result<(), String>

One surface per triangle, indices in range, positions finite, surfaces known to the world’s Surfaces.

fn to_json(&self) -> Result<Option<Value>, JsonError>

A summary: counts, and triangles per surface index.

const NAME: &'static str = "core.collision"

const GEOMETRY: Geometry = crate::Geometry::None

What the value holds of its entity’s mesh primitives and vertices (Geometry). Stated by every component, with no default, so data that describes a mesh can’t be left behind by an edit of it unawares: the World’s edit paths take it from there.

const VERSION: u32 = 1

Schema version of the component’s content. Bump it when the meaning or layout of a field changes.

fn references(&self, _out: &mut Vec<Entity>)

The entities this component refers to (a prototype, materials, textures), appended to out: the edges World::closure follows. A component holding entity references must declare every one of them.

fn remap_primitives(&self, _from: &[usize]) -> Option<Result<Self, String>>

The component after its entity’s mesh primitives were rebuilt, for a component that holds something per primitive (Geometry::PerPrimitive, Geometry::PerVertex): new primitive i comes from old primitive from[i] (a source may repeat, when a primitive is split, or be absent, when one is dropped). Such a component always answers (a value holding nothing per primitive answers with itself); None, the default, is for components of Geometry::None, and World::remap_primitives refuses a dependent component that gives it. An index the component does not have is an error. remap_list does the work for a list with one entry per primitive.

fn remap_vertices( &self, _primitive: usize, _from: &[u32], ) -> Option<Result<Self, String>>

The component after the vertices of its entity’s mesh primitive primitive were compacted or reordered, for a component that holds something per vertex (Geometry::PerVertex): new vertex i of that primitive is old vertex from[i] (a source may repeat or be absent). Such a component always answers (with itself when it holds nothing for that primitive); None, the default, is for the others, and World::remap_vertices refuses a per-vertex component that gives it. An index the component does not have is an error. Every pass that compacts or reorders a primitive’s vertices calls World::remap_vertices. After a rebuild of the primitive list (World::rebuild_primitives, Component::remap_primitives) a primitive’s per-vertex data is its source primitive’s, and the vertex map is relative to that source.

fn blend_vertices( &self, _primitive: usize, _from: &[VertexBlend], ) -> Option<Result<Self, String>>

The component after the vertices of its entity’s mesh primitive primitive were rebuilt as blends of old ones (VertexBlend), for a component that holds something per vertex (Geometry::PerVertex): new vertex i is the combination from[i] of old vertices, in whatever way the component’s data combines (a morph target’s delta is interpolated, the way the surface it moves is). It answers as Component::remap_vertices does: with itself when it holds nothing for that primitive; None, the default, is for a component that does not know how to combine its data, and World::blend_vertices refuses a per-vertex component that gives it. An index the component does not have is an error. A vertex that is a copy of one old vertex (VertexBlend::copy) is the case Component::remap_vertices states, and a component answering one answers the other alike.

fn restate(&self, _resolved: &Resolved<'_>) -> Restated<Self>

The component after resolve-state (crate::state::ResolveState) gave the axes in resolved their values: a component that holds crate::state::Clauses of its own (a record of parts each present in some states) reduces them as core.condition is reduced (crate::state::Resolved::reduce: a clause that fails is dropped, a clause left with no literal holds whatever the other axes are). Restated::Absent says the entity is not present in this state (every clause failed): it is despawned as one whose core.condition fails is. The default holds no clause: Restated::Unchanged.

impl Debug for Collision

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for Collision

fn default() -> Self

Returns the “default value” for a type.

impl PartialEq for Collision

fn eq(&self, other: &Self) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for Collision