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use crate::{
err::Error,
geom::{Mesh, Surface},
ord::{Link, Set},
};
pub struct SurfaceLinker {
mesh: Mesh,
attr: String,
}
impl SurfaceLinker {
#[inline]
#[must_use]
pub const fn new(mesh: Mesh, attr: String) -> Self {
Self { mesh, attr }
}
}
impl<'a, T: 'a> Link<'a, T> for SurfaceLinker {
type Inst = Surface<'a, T>;
#[inline]
fn requires(&self) -> Vec<String> {
vec![self.attr.clone()]
}
#[inline]
fn link(self, attrs: &'a Set<T>) -> Result<Self::Inst, Error> {
let attr = self.attr;
Ok(Surface::new(
self.mesh,
attrs
.get(&attr)
.unwrap_or_else(|| panic!("Failed to link surface-attribute key: {}", attr)),
))
}
}