Module style 

Style/runtime model for style-document-driven map construction.

This module provides a small engine-owned style runtime inspired by MapLibre’s style system. It covers Rustial’s current source families and a broader style-layer taxonomy, while lowering geometry-centric layers onto the existing engine primitives (BackgroundLayer, HillshadeLayer, TileLayer, VectorLayer, and ModelLayer).

Structs

AmbientLight

Ambient light parameters.

BackgroundStyleLayer

Background layer style spec.

CanvasSource

Canvas source — georeferenced dynamic overlay driven by a FrameProvider.

CircleStyleLayer

Circle layer style spec.

ComputedFog

Pre-computed fog parameters ready for GPU uniform upload.

ComputedLighting

Pre-computed lighting parameters ready for GPU uniform upload.

ComputedShadow

Pre-computed shadow parameters for the current frame.

ComputedSky

Pre-computed sky parameters ready for GPU uniform upload.

DirectionalLight

Directional (sun) light parameters.

FillExtrusionStyleLayer

Fill extrusion layer style spec.

FillStyleLayer

Fill layer style spec.

FogConfig

User-facing fog/atmosphere configuration.

GeoJsonSource

In-memory vector feature source with optional point clustering.

HeatmapStyleLayer

Heatmap layer style spec.

HillshadeStyleLayer

Hillshade layer style spec.

ImageSource

Image source lowered onto raster rendering.

LayerTransitionState

Per-layer transition state for all transitionable paint properties.

LightConfig

Top-level lighting configuration.

LineStyleLayer

Line layer style spec.

MapStyle

Mutable runtime wrapper around a StyleDocument.

ModelSource

In-memory model source.

ModelStyleLayer

Model layer style spec.

RasterSource

Raster tile source entry.

RasterStyleLayer

Raster/tile layer style spec.

ResolvedTransitions

Snapshot of all resolved transition values for a single layer.

ShadowConfig

Shadow map configuration parameters.

SkyConfig

User-facing sky / atmosphere configuration.

StyleDocument

A style document containing source registry, ordered layers, and optional terrain source.

StyleEvalContext

Runtime evaluation context for paint/layout values.

StyleEvalContextFull

Extended evaluation context that carries per-feature mutable state alongside the current zoom level.

StyleLayerMeta

Shared style-layer metadata.

SymbolStyleLayer

Symbol layer style spec.

TerrainSource

Terrain source entry.

TransitionSpec

Transition timing specification.

Transitioning

A single property undergoing a timed transition.

VectorStyleLayer

Legacy generic vector style spec.

VectorTileSource

Vector-tile-like feature source.

VideoSource

Video source — georeferenced dynamic overlay driven by a FrameProvider.

Enums

LightingMode

Lighting mode controlling how lit shaders compute surface illumination.

SkyType

Rendering mode for the sky background.

StyleError

Style/runtime errors.

StyleLayer

Supported style-layer variants.

StyleProjection

Top-level style-owned projection selection.

StyleSource

Source registry entry.

StyleSourceKind

Enumerates style/runtime source families.

Traits

FromFeatureStateProperty

Conversion from a PropertyValue stored in feature-state to a concrete style value type.

StyleInterpolatable

Interpolation behaviour for style values.

Functions

atmospheric_clear_color

Blend base toward a slightly lifted “horizon” colour as pitch increases past 0.25 rad.

circle_style_with_state

Resolve a CircleStyleLayer’s paint properties with per-feature state.

compute_fog

Compute fog parameters from camera state and optional user config.

compute_lighting

Compute GPU-ready lighting parameters from the user config.

compute_shadow_cascades

Compute cascade light-space matrices from the camera frustum and light direction.

compute_sky

Compute GPU-ready sky parameters from the user config.

fill_extrusion_style_with_state

Resolve a FillExtrusionStyleLayer’s paint properties with per-feature state.

fill_style_with_state

Resolve a FillStyleLayer’s paint properties with per-feature state.

heatmap_style_with_state

Resolve a HeatmapStyleLayer’s paint properties with per-feature state.

line_style_with_state

Resolve a LineStyleLayer’s paint properties with per-feature state.

symbol_style_with_state

Resolve a SymbolStyleLayer’s paint properties with per-feature state.

vector_style_with_state

Resolve a VectorStyleLayer’s paint properties with per-feature state.

Type Aliases

RasterSourceFactory

Factory for constructing a fresh raster tile source when a style document is applied.

StyleLayerId

A style layer identifier.

StyleSourceId

A style source identifier.

StyleValue

Type alias for backward compatibility.

TerrainSourceFactory

Factory for constructing a fresh terrain elevation source when a style document is applied.

VectorTileSourceFactory

Factory for constructing a fresh streamed vector tile source when a style document is applied.