/**
 * Weight Painting
 *
 * System for painting vertex weights on meshes attached to armatures.
 * Used for rigging and animation workflows.
 */
import { Mesh } from '../geometry/mesh';
import { Armature } from '../geometry/armature';
import { ArmatureBone } from '../geometry/armature_bone';
export interface WeightPaintingOptions {
    radius?: number;
    limit?: number;
    blend_mode?: 'set' | 'add';
    xray?: boolean;
    mirror?: boolean;
}
export interface WeightPaintingResult {
    affected_vertices: Set<string>;
    weights_changed: boolean;
}
/**
 * Paint vertex weights on a mesh
 */
export declare function paintVertexWeights(mesh: Mesh, bone: ArmatureBone, position: [number, number], // Screen space position [x, y]
options?: WeightPaintingOptions): WeightPaintingResult;
/**
 * Get vertex weights for a mesh and bone
 */
export declare function getVertexWeights(mesh: Mesh, bone: ArmatureBone): Record<string, number>;
/**
 * Normalize vertex weights for a mesh
 * Ensures total weight per vertex doesn't exceed 1.0
 */
export declare function normalizeVertexWeights(mesh: Mesh, armature: Armature): void;
/**
 * Clear all vertex weights for a mesh
 */
export declare function clearVertexWeights(mesh: Mesh, armature: Armature): void;
/**
 * Copy vertex weights from one bone to another
 */
export declare function copyVertexWeights(mesh: Mesh, sourceBone: ArmatureBone, targetBone: ArmatureBone): void;
//# sourceMappingURL=weight_painting.d.ts.map