shambler 0.2.0

A rusty, hulking, lighting-tossing geometry processor.
Documentation 
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use rayon::iter::{IntoParallelRefIterator, ParallelIterator};
use std::collections::BTreeMap;
use usage::Usage;

use super::TextureId;

pub enum TextureSizesTag {}

pub type TextureSizes = Usage<TextureSizesTag, BTreeMap<TextureId, (u32, u32)>>;

/// Construct using a name -> size map
pub fn texture_sizes(
    textures: &BTreeMap<TextureId, String>,
    texture_sizes: BTreeMap<&str, (u32, u32)>,
) -> TextureSizes {
    textures
        .par_iter()
        .flat_map(|(texture_id, texture)| {
            if let Some(texture_size) = texture_sizes.get(texture.as_str()) {
                Some((*texture_id, *texture_size))
            } else {
                None
            }
        })
        .collect()
}