geodesic 0.1.0

A Rust library for constructing and sampling 3D geometric scenes.
Documentation 
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//! Scene structure for `Ray` tracing.

use nalgebra::RealField;
use num_traits::ToPrimitive;
use std::collections::HashMap;

use crate::{
    bvh::BvhConfig,
    error::{Result, SceneError},
    geometry::Mesh,
};

/// Builder for constructing `Scene` instances.
#[derive(Debug)]
pub struct Assets<T: RealField + Copy + ToPrimitive> {
    /// Bounding Volume Hierarchy configuration for applicable `Assets` constructed `Scene`s.
    pub bvh_config: BvhConfig<T>,
    /// Collection of `Mesh` instances available in `Scene`s.
    pub meshes: HashMap<String, Mesh<T>>,
}

impl<T: RealField + Copy + ToPrimitive> Assets<T> {
    /// Construct a new empty `Assets` instance.
    pub fn empty(bvh_config: BvhConfig<T>) -> Self {
        Self {
            bvh_config,
            meshes: HashMap::new(),
        }
    }

    /// Add a `Mesh` to the `Assets`.
    ///
    /// # Errors
    ///
    /// Returns an error if an asset with the same ID already exists.
    pub fn add_mesh(mut self, id: &str, mesh: Mesh<T>) -> Result<Self> {
        if self.meshes.contains_key(id) {
            return Err(SceneError::DuplicateAssetId { id: id.to_string() }.into());
        }
        let _unused = self.meshes.insert(id.into(), mesh);
        Ok(self)
    }
}