[−][src]Trait plexus::geometry::Geometry

pub trait Geometry: Sized {
    type Vertex: Clone;
    type Arc: Clone + Default;
    type Edge: Clone + Default;
    type Face: Clone + Default;
}

Graph geometry.

Specifies the types used to represent geometry for vertices, arcs, edges, and faces in a graph. Arbitrary types can be used, including () for no geometry at all.

Geometry is vertex-based. Geometric operations depend on understanding the positional data in vertices, and operational traits mostly apply to such positional data.

Examples

use decorum::R64;
use nalgebra::{Point3, Vector4};
use num::One;
use plexus::geometry::convert::{AsPosition, IntoGeometry};
use plexus::geometry::Geometry;
use plexus::graph::MeshGraph;
use plexus::prelude::*;
use plexus::primitive::sphere::UvSphere;

// Vertex-only geometry with a position and color.
#[derive(Clone, Copy, Eq, Hash, PartialEq)]
pub struct VertexGeometry {
    pub position: Point3<R64>,
    pub color: Vector4<R64>,
}

impl Geometry for VertexGeometry {
    type Vertex = Self;
    type Arc = ();
    type Edge = ();
    type Face = ();
}

impl AsPosition for VertexGeometry {
    type Target = Point3<R64>;

    fn as_position(&self) -> &Self::Target {
        &self.position
    }

    fn as_position_mut(&mut self) -> &mut Self::Target {
        &mut self.position
    }
}

// Create a mesh from a sphere primitive and map the geometry data.
let mut graph = UvSphere::new(8, 8)
    .polygons_with_position()
    .map_vertices(|position| VertexGeometry {
        position: position.into_geometry(),
        color: Vector4::new(One::one(), One::one(), One::one(), One::one()),
    })
    .collect::<MeshGraph<VertexGeometry>>();

Associated Types

type Vertex: Clone

type Arc: Clone + Default

type Edge: Clone + Default

type Face: Clone + Default

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Implementations on Foreign Types

impl Geometry for ()[src]

type Vertex = ()

type Arc = ()

type Edge = ()

type Face = ()

impl<T> Geometry for Point2<T> where
    T: Clone, [src]

type Vertex = Self

type Arc = ()

type Edge = ()

type Face = ()

impl<T> Geometry for Point3<T> where
    T: Clone, [src]

type Vertex = Self

type Arc = ()

type Edge = ()

type Face = ()

impl<T> Geometry for Point2<T> where
    T: Clone, [src]

type Vertex = Self

type Arc = ()

type Edge = ()

type Face = ()

impl<T> Geometry for Point3<T> where
    T: Clone, [src]

type Vertex = Self

type Arc = ()

type Edge = ()

type Face = ()

impl<T> Geometry for Point2<T> where
    T: Scalar, [src]

type Vertex = Self

type Arc = ()

type Edge = ()

type Face = ()

impl<T> Geometry for Point3<T> where
    T: Scalar, [src]

type Vertex = Self

type Arc = ()

type Edge = ()

type Face = ()

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Implementors

impl<T> Geometry for Duplet<T> where
    T: Clone, [src]

type Vertex = Self

type Arc = ()

type Edge = ()

type Face = ()

impl<T> Geometry for Triplet<T> where
    T: Clone, [src]

type Vertex = Self

type Arc = ()

type Edge = ()

type Face = ()

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