heli-agri/lib/vec/mat4.js

HeliAgri is a high-performance, feature-packed library for creating interactive maps on the web. It can display map tiles, vector data and markers loaded from any source on any web page. OpenLayers has been developed to further the use of geographic infor

/**
 * @module ol/vec/mat4
 */

/**
 * @return {Array<number>} "4x4 matrix representing a 3D identity transform."
 */
export function create() {
  return [1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1];
}

/**
 * @param {Array<number>} mat4 Flattened 4x4 matrix receiving the result.
 * @param {import("../transform.js").Transform} transform Transformation matrix.
 * @return {Array<number>} "2D transformation matrix as flattened 4x4 matrix."
 */
export function fromTransform(mat4, transform) {
  mat4[0] = transform[0];
  mat4[1] = transform[1];
  mat4[4] = transform[2];
  mat4[5] = transform[3];
  mat4[12] = transform[4];
  mat4[13] = transform[5];
  return mat4;
}