Struct MaterialFilter 

pub struct MaterialFilter {
    pub category_prefix: Option<String>,
    pub min_values: HashMap<String, f64>,
    pub max_values: HashMap<String, f64>,
}

Chainable filter for material databases.

Filters can be composed: call filter_category, filter_min, filter_max in sequence and collect results with apply.

Fields

category_prefix: Option<String>

Optional category prefix filter.

min_values: HashMap<String, f64>

Per-property minimum value constraints.

max_values: HashMap<String, f64>

Per-property maximum value constraints.

Implementations

impl MaterialFilter

pub fn new() -> Self

Create an empty filter (passes everything).

pub fn filter_category(self, prefix: &str) -> Self

Restrict to materials whose category starts with prefix.

pub fn filter_min(self, key: &str, min: f64) -> Self

Require property key >= min.

pub fn filter_max(self, key: &str, max: f64) -> Self

Require property key <= max.

pub fn apply<'a>(&self, db: &'a MaterialDatabase) -> Vec<&'a MaterialRecord>

Apply the filter to a database and return matching records.

Trait Implementations

impl Clone for MaterialFilter

fn clone(&self) -> MaterialFilter

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for MaterialFilter

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for MaterialFilter

fn default() -> MaterialFilter

Returns the “default value” for a type.