transformation-matrix/build-commonjs/applyToPoint.js

2d transformation matrix functions written in ES6 syntax. Tree shaking ready!

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.applyToPoint = applyToPoint;
exports.applyToPoints = applyToPoints;
/**
 * Calculate a point transformed with an affine matrix
 * @param matrix {Matrix} Affine Matrix
 * @param  point {Point} Point
 * @returns {Point} Point
 */
function applyToPoint(matrix, point) {
  return Array.isArray(point) ? [matrix.a * point[0] + matrix.c * point[1] + matrix.e, matrix.b * point[0] + matrix.d * point[1] + matrix.f] : {
    x: matrix.a * point.x + matrix.c * point.y + matrix.e,
    y: matrix.b * point.x + matrix.d * point.y + matrix.f
  };
}

/**
 * Calculate an array of points transformed with an affine matrix
 * @param matrix {Matrix} Affine Matrix
 * @param points {Point[]} Array of point
 * @returns {Point[]} Array of point
 */
function applyToPoints(matrix, points) {
  return points.map(point => applyToPoint(matrix, point));
}