import { type Mat4Like } from '@forgeax/engine-math';
import { AssetError, type MeshAsset, type Result } from '@forgeax/engine-types';
export interface DecalGeometryOptions {
    /** Maps the unit projection box [-0.5, 0.5] into the source mesh's local space. */
    readonly transform: Mat4Like;
    /** Minimum face-normal cosine against the projector's +Z axis, in [-1, 1]. */
    readonly normalThreshold?: number;
}
/**
 * Pure local-space mesh projection, suitable for Pack generation or occasional
 * runtime placement. The result uses ordinary materials and follows the receiver
 * Transform. No intersecting, projectable triangles returns null. It does not bind skin/morph deformation or change receiver geometry.
 */
export declare function createDecalGeometry(source: MeshAsset, options: DecalGeometryOptions): Result<MeshAsset | null, AssetError>;
//# sourceMappingURL=decal.d.ts.map