honeycomb_render/capture/
mod.rspub mod ecs_data;
pub mod system;
use crate::bundles::{DartBodyBundle, DartHeadBundle, EdgeBundle, FaceBundle, VertexBundle};
use crate::capture::ecs_data::CaptureId;
use crate::capture::system::{populate_darts, populate_edges, populate_vertices};
use bevy::prelude::*;
use bevy::utils::HashMap;
use honeycomb_core::prelude::{
CMap2, CoordsFloat, DartIdType, FaceIdType, Orbit2, OrbitPolicy, VertexIdType,
};
pub struct CapturePlugin;
impl Plugin for CapturePlugin {
fn build(&self, app: &mut App) {
app.insert_resource(FocusedCapture::default())
.insert_resource(CaptureList::default());
app.add_systems(Startup, populate_darts)
.add_systems(Startup, populate_vertices)
.add_systems(Startup, populate_edges);
}
}
#[derive(Resource)]
pub struct FocusedCapture(pub CaptureId);
impl Default for FocusedCapture {
fn default() -> Self {
Self(CaptureId(0))
}
}
#[derive(Resource, Default)]
pub struct CaptureList(pub Vec<Capture>);
pub struct Capture {
pub metadata: CaptureMD,
pub vertex_vals: Vec<Vec3>,
pub normals: HashMap<FaceIdType, Vec<Vec3>>,
pub darts: Vec<(DartHeadBundle, DartBodyBundle)>,
pub vertices: Vec<VertexBundle>,
pub edges: Vec<EdgeBundle>,
pub faces: Vec<FaceBundle>,
}
impl Capture {
#[allow(clippy::too_many_lines)]
pub fn new<T: CoordsFloat>(cap_id: usize, cmap: &CMap2<T>) -> Self {
let map_vertices = cmap.fetch_vertices();
let map_edges = cmap.fetch_edges();
let map_faces = cmap.fetch_faces();
let metadata = CaptureMD {
capture_id: cap_id,
n_darts: cmap.n_darts() - cmap.n_unused_darts(),
n_vertices: cmap.n_vertices(),
n_edges: map_edges.identifiers.len(),
n_faces: map_faces.identifiers.len(),
n_volumes: 0,
};
let mut index_map: HashMap<VertexIdType, usize> = HashMap::with_capacity(cmap.n_vertices());
let vertex_vals: Vec<Vec3> = map_vertices
.identifiers
.iter()
.enumerate()
.map(|(idx, vid)| {
index_map.insert(*vid, idx);
let v = cmap
.vertex(*vid)
.expect("E: found a topological vertex with no associated coordinates");
Vec3::from((v.0.to_f32().unwrap(), v.1.to_f32().unwrap(), 0.0))
})
.collect();
let vertices: Vec<VertexBundle> = map_vertices
.identifiers
.iter()
.map(|id| VertexBundle::new(cap_id, *id, index_map[id]))
.collect();
let edges: Vec<EdgeBundle> = map_edges
.identifiers
.iter()
.map(|id| {
let v1id = cmap.vertex_id(*id as DartIdType);
let v2id = if cmap.is_i_free::<2>(*id as DartIdType) {
cmap.vertex_id(cmap.beta::<1>(*id as DartIdType))
} else {
cmap.vertex_id(cmap.beta::<2>(*id as DartIdType))
};
EdgeBundle::new(cap_id, *id, (index_map[&v1id], index_map[&v2id]))
})
.collect();
let mut normals = HashMap::new();
let mut darts: Vec<(DartHeadBundle, DartBodyBundle)> = Vec::new();
let faces: Vec<FaceBundle> = map_faces
.identifiers
.iter()
.map(|id| {
let vertex_ids: Vec<usize> =
Orbit2::new(cmap, OrbitPolicy::Custom(&[1]), *id as DartIdType)
.map(|dart_id| index_map[&cmap.vertex_id(dart_id)])
.collect();
let n_v = vertex_ids.len();
let mut loc_normals = vec![{
let (ver_in, ver, ver_out) =
(&vertex_ids[n_v - 1], &vertex_ids[0], &vertex_ids[1]);
let (vec_in, vec_out) = (
vertex_vals[*ver] - vertex_vals[*ver_in],
vertex_vals[*ver_out] - vertex_vals[*ver],
);
(vec_in.cross(Vec3::Z).normalize() + vec_out.cross(Vec3::Z).normalize())
.normalize()
}];
loc_normals.extend(vertex_ids.windows(3).map(|wdw| {
let [ver_in, ver, ver_out] = wdw else {
unreachable!("i kneel");
};
let (vec_in, vec_out) = (
vertex_vals[*ver] - vertex_vals[*ver_in],
vertex_vals[*ver_out] - vertex_vals[*ver],
);
(vec_in.cross(Vec3::Z).normalize() + vec_out.cross(Vec3::Z).normalize())
.normalize()
}));
loc_normals.push({
let (ver_in, ver, ver_out) =
(&vertex_ids[n_v - 2], &vertex_ids[n_v - 1], &vertex_ids[0]);
let (vec_in, vec_out) = (
vertex_vals[*ver] - vertex_vals[*ver_in],
vertex_vals[*ver_out] - vertex_vals[*ver],
);
(vec_in.cross(Vec3::Z).normalize() + vec_out.cross(Vec3::Z).normalize())
.normalize()
});
assert_eq!(loc_normals.len(), n_v);
normals.insert(*id, loc_normals);
let mut tmp = Orbit2::new(cmap, OrbitPolicy::Custom(&[1]), *id as DartIdType)
.enumerate()
.map(|(idx, dart_id)| (dart_id, index_map[&cmap.vertex_id(dart_id)], idx))
.collect::<Vec<_>>();
tmp.push(tmp[0]); let bodies = tmp.windows(2).map(|wd| {
let [(dart_id, v1_id, v1n_id), (_, v2_id, v2n_id)] = wd else {
unreachable!("i kneel");
};
DartBodyBundle::new(
cap_id,
*dart_id,
cmap.vertex_id(*dart_id),
cmap.edge_id(*dart_id),
*id,
(*v1_id, *v2_id),
(*v1n_id, *v2n_id),
)
});
let heads = tmp.windows(2).map(|wd| {
let [(dart_id, v1_id, v1n_id), (_, v2_id, v2n_id)] = wd else {
unreachable!("i kneel");
};
DartHeadBundle::new(
cap_id,
*dart_id,
cmap.vertex_id(*dart_id),
cmap.edge_id(*dart_id),
*id,
(*v1_id, *v2_id),
(*v1n_id, *v2n_id),
)
});
darts.extend(heads.zip(bodies));
FaceBundle::new(cap_id, *id, vertex_ids)
})
.collect();
Self {
metadata,
vertex_vals,
normals,
darts,
vertices,
edges,
faces,
}
}
}
pub struct CaptureMD {
pub capture_id: usize,
pub n_darts: usize,
pub n_vertices: usize,
pub n_edges: usize,
pub n_faces: usize,
pub n_volumes: usize,
}