/**
 * MorphTargets.ts
 *
 * Blend shapes / morph targets: named targets with delta vertices,
 * weight interpolation, presets, and batch application.
 *
 * @module animation
 */
export interface MorphDelta {
    vertexIndex: number;
    dx: number;
    dy: number;
    dz: number;
}
export interface MorphTarget {
    name: string;
    deltas: MorphDelta[];
    weight: number;
}
export interface MorphPreset {
    name: string;
    weights: Map<string, number>;
}
export declare class MorphTargetSystem {
    private targets;
    private presets;
    private vertexCount;
    constructor(vertexCount: number);
    addTarget(name: string, deltas: MorphDelta[]): void;
    removeTarget(name: string): void;
    setWeight(name: string, weight: number): void;
    getWeight(name: string): number;
    addPreset(name: string, weights: Map<string, number>): void;
    applyPreset(name: string): void;
    computeDeformedPositions(basePositions: Float32Array): Float32Array;
    lerpWeights(targetWeights: Map<string, number>, t: number): void;
    getTargetCount(): number;
    getActiveTargets(): string[];
    getVertexCount(): number;
}
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