You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
26 lines
668 B
26 lines
668 B
4 months ago
|
"use strict";
|
||
|
|
Object.defineProperty(exports, "__esModule", { value: true });
|
||
|
|
exports.angleTo = angleTo;
|
||
|
|
var gl_matrix_1 = require("gl-matrix");
|
||
|
|
var direction_1 = require("./direction");
|
||
|
|
/**
|
||
|
|
* 二维向量 v1 到 v2 的夹角
|
||
|
|
* @param v1
|
||
|
|
* @param v2
|
||
|
|
* @param direct
|
||
|
|
*/
|
||
|
|
function angleTo(v1, v2, direct) {
|
||
|
|
var ang = gl_matrix_1.vec2.angle(v1, v2);
|
||
|
|
var angleLargeThanPI = (0, direction_1.direction)(v1, v2) >= 0;
|
||
|
|
if (direct) {
|
||
|
|
if (angleLargeThanPI) {
|
||
|
|
return Math.PI * 2 - ang;
|
||
|
|
}
|
||
|
|
return ang;
|
||
|
|
}
|
||
|
|
if (angleLargeThanPI) {
|
||
|
|
return ang;
|
||
|
|
}
|
||
|
|
return Math.PI * 2 - ang;
|
||
|
|
}
|
||
|
|
//# sourceMappingURL=angle-to.js.map
|