/**
 * Tree Silhouette System Models
 *
 * Type definitions for tree silhouette rendering system.
 */
export type TreeType = "pine" | "fir" | "spruce" | "oak" | "maple" | "poplar" | "willow" | "dead";
export interface TreeTypeVisibility {
    pine: boolean;
    fir: boolean;
    spruce: boolean;
    oak: boolean;
    maple: boolean;
    poplar: boolean;
    willow: boolean;
    dead: boolean;
}
export interface RenderedTree {
    id: string;
    x: number;
    height: number;
    width: number;
    type: TreeType;
    layer: number;
    seed: number;
    imageFilename?: string;
}
/**
 * Grid-based placement configuration.
 * Each layer uses specific columns to avoid overlap within a layer.
 * Layers use offset columns so trees naturally interleave.
 */
export interface LayerConfig {
    columns: number[];
    heightPresets: number[];
    widthRange: [number, number];
}
/**
 * Species-specific scale factors for realistic proportions.
 * Based on natural growth characteristics of each tree type.
 */
export interface TreeTypeScale {
    heightMin: number;
    heightMax: number;
    widthMin: number;
    widthMax: number;
}
/**
 * Configurable placement parameters.
 * Exposed for Lab UI sliders.
 */
export interface PlacementConfig {
    /** Minimum spacing for same-layer trees (0-0.15, higher = more spread out) */
    minSpacing: number;
    /** Cross-layer collision threshold (0-0.15, higher = more separation between layers) */
    crossLayerThreshold: number;
    /** Position jitter amount (0-0.5, higher = more random placement) */
    jitter: number;
    /** Hero anchor strength (0-1, 0 = disabled, 1 = always snap to thirds) */
    heroStrength: number;
}
/**
 * Internal placement constants derived from PlacementConfig.
 */
export interface PlacementConstants {
    HERO_ANCHORS: number[];
    MIN_SPACING: {
        far: number;
        mid: number;
        near: number;
    };
    CROSS_LAYER_THRESHOLD: number;
    NUDGE_STEP: number;
    MAX_NUDGE: number;
    EDGE_MARGIN: number;
    HERO_HEIGHT_BOOST: number;
    HERO_SNAP_DISTANCE: number;
    JITTER: number;
}
/**
 * A placed tree for collision detection.
 */
export interface PlacedTree {
    x: number;
    layer: number;
}
/**
 * Ecological zone defines which tree types are weighted in a region of the canvas.
 * x positions are normalized 0-1 across the canvas width.
 */
export interface EcologicalZone {
    startX: number;
    endX: number;
    weights: Partial<Record<TreeType, number>>;
}
/**
 * An ecological pattern defines how tree types are distributed across the scene.
 */
export interface EcologicalPattern {
    id: string;
    name: string;
    description: string;
    zones: EcologicalZone[];
}
export interface RGB {
    r: number;
    g: number;
    b: number;
}
/**
 * Colors for rendering a tree at a given depth.
 */
export interface TreeColors {
    silhouette: RGB;
}
export interface TreeSilhouetteStyle {
    farSilhouette: RGB;
    nearSilhouette: RGB;
    rimLight: RGB | null;
    farBaseRatio: number;
    nearBaseRatio: number;
    rimOpacity: readonly [number, number];
    rimBlur: readonly [number, number];
}
export interface TreeSilhouetteSystemOptions {
    layerConfigs?: readonly LayerConfig[];
    style?: Partial<TreeSilhouetteStyle>;
}
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