packages/colonizers-core/lib/math-helper.js
'use strict';
function round(number, dp) {
var dp2 = Math.pow(10, dp);
return Math.round(number * dp2) / dp2;
}
function getAngle(p1, p2) {
return (Math.atan2(p2.y - p1.y, p2.x - p1.x) * 180) / Math.PI;
}
function getDistance(p1, p2) {
return Math.sqrt(Math.pow(p2.x - p1.x, 2) + Math.pow(p2.y - p1.y, 2));
}
function getEndpoint(origin, angle, distance) {
var radians = (angle * Math.PI) / 180;
return {
x: round(origin.x + distance * Math.sin(radians), 3),
y: round(origin.y + distance * Math.cos(radians), 3)
};
}
module.exports = {
getAngle: getAngle,
getDistance: getDistance,
getEndpoint: getEndpoint,
round: round
};