Struct StyleRenderer

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pub struct StyleRenderer;

Expand description

Evaluates paint properties and filters at runtime.

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impl StyleRenderer

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pub fn eval_zoom_color(value: &PropertyValue<Color>, zoom: f64) -> Color

Evaluate a PropertyValue<Color> at a given zoom level.

Returns the literal color or the result of evaluating an interpolation expression; falls back to opaque black for complex expressions not yet handled by this evaluator.

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pub fn eval_zoom_f64(value: &PropertyValue<f64>, zoom: f64) -> f64

Evaluate a PropertyValue<f64> at a given zoom level.

Supports Literal, Expression::Zoom, and Expression::Interpolate with Linear and Exponential interpolation. Returns 0.0 for unrecognised expressions.

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pub fn feature_matches_filter( filter: &Filter, properties: &HashMap<String, Value>, ) -> bool

Evaluate whether a set of feature properties matches the given Filter.

Auto Trait Implementations§

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impl UnwindSafe for StyleRenderer

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