import { type Vec3 } from '../math';
import { Quaternion } from 'three/webgpu';
export declare function quaternion_from_direction(direction: Vec3): Quaternion;
export declare function rotation_from_direction(direction: Vec3): Vec3;
export declare function arrow_axis_geometry(vector: Vec3, vector_scale: number, arrow_head_length: number): {
    head_length: number;
    shaft_length: number;
    shaft_center: number;
    head_center: number;
    rotation: Vec3;
};
export declare function cylinder_between(start: Vec3, end: Vec3): {
    position: Vec3;
    rotation: Vec3;
    length: number;
};