import { mat3 } from 'gl-matrix'; import { CreateTransformer } from '../type'; /** * Apply scale transformation for current vector. * @param params [sx, sy] * @param x x of the the bounding box of coordinate * @param y y of the the bounding box of coordinate * @param width width of the the bounding box of coordinate * @param height height of the the bounding box of coordinate * @returns transformer */ export const scale: CreateTransformer = (params, x, y, width, height) => { const [sx, sy] = params as number[]; const matrix = mat3.create(); return mat3.fromScaling(matrix, [sx, sy]); };