/**
 * Tree Silhouette System Constants
 *
 * Configuration constants for tree silhouette rendering.
 */
import type { LayerConfig, TreeType, TreeTypeScale, EcologicalPattern, PlacementConfig, RGB, TreeSilhouetteStyle } from "../models/tree-silhouette-models.js";
export declare const NUM_LAYERS = 7;
export declare const NUM_COLUMNS = 10;
/**
 * 10-column grid, each layer uses different columns.
 * Heights are curated to create pleasing silhouette with variety.
 * 7 layers for smooth depth gradation (far to near).
 */
export declare const LAYER_CONFIGS: LayerConfig[];
/**
 * Species-specific scale factors based on natural growth characteristics.
 */
export declare const TREE_TYPE_SCALES: Record<TreeType, TreeTypeScale>;
/**
 * Default placement config - balanced between natural and composed.
 */
export declare const DEFAULT_PLACEMENT: PlacementConfig;
/**
 * Night silhouette color palette - pure darkness with subtle atmospheric fade.
 * Most trees stay dark; only the very farthest get a subtle haze lift.
 */
export declare const FAR_SILHOUETTE: RGB;
export declare const NEAR_SILHOUETTE: RGB;
/** Rim light color - subtle moonlight edge glow */
export declare const RIM_LIGHT: RGB;
export declare const DEFAULT_TREE_SILHOUETTE_STYLE: TreeSilhouetteStyle;
/**
 * Preset ecological patterns based on real-world forest biomes.
 *
 * VISUAL DISTINCTIVENESS GUIDE:
 * - Conifers (pine/fir/spruce): Triangular, pointed tops
 * - Oak/Maple: Wide, rounded crowns
 * - Poplar: VERY tall and narrow (columnar) - most distinctive!
 * - Willow: Wide, droopy branches
 * - Dead: Sparse, skeletal
 *
 * Patterns are designed to create VISIBLE differences through shape variety.
 */
export declare const ECOLOGICAL_PATTERNS: EcologicalPattern[];
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