laya-coreui-es
Version:
laya核心库、ui库es版本，剔除了媒体、TTF等功能。基于 LayaAir-release_2.12.0 修改
91 lines (90 loc) • 3.02 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
exports.MathUtil = void 0;
class MathUtil {
static subtractVector3(l, r, o) {
o[0] = l[0] - r[0];
o[1] = l[1] - r[1];
o[2] = l[2] - r[2];
}
static lerp(left, right, amount) {
return left * (1 - amount) + right * amount;
}
static scaleVector3(f, b, e) {
e[0] = f[0] * b;
e[1] = f[1] * b;
e[2] = f[2] * b;
}
static lerpVector3(l, r, t, o) {
var ax = l[0], ay = l[1], az = l[2];
o[0] = ax + t * (r[0] - ax);
o[1] = ay + t * (r[1] - ay);
o[2] = az + t * (r[2] - az);
}
static lerpVector4(l, r, t, o) {
var ax = l[0], ay = l[1], az = l[2], aw = l[3];
o[0] = ax + t * (r[0] - ax);
o[1] = ay + t * (r[1] - ay);
o[2] = az + t * (r[2] - az);
o[3] = aw + t * (r[3] - aw);
}
static slerpQuaternionArray(a, Offset1, b, Offset2, t, out, Offset3) {
var ax = a[Offset1 + 0], ay = a[Offset1 + 1], az = a[Offset1 + 2], aw = a[Offset1 + 3], bx = b[Offset2 + 0], by = b[Offset2 + 1], bz = b[Offset2 + 2], bw = b[Offset2 + 3];
var omega, cosom, sinom, scale0, scale1;
cosom = ax * bx + ay * by + az * bz + aw * bw;
if (cosom < 0.0) {
cosom = -cosom;
bx = -bx;
by = -by;
bz = -bz;
bw = -bw;
}
if ((1.0 - cosom) > 0.000001) {
omega = Math.acos(cosom);
sinom = Math.sin(omega);
scale0 = Math.sin((1.0 - t) * omega) / sinom;
scale1 = Math.sin(t * omega) / sinom;
}
else {
scale0 = 1.0 - t;
scale1 = t;
}
out[Offset3 + 0] = scale0 * ax + scale1 * bx;
out[Offset3 + 1] = scale0 * ay + scale1 * by;
out[Offset3 + 2] = scale0 * az + scale1 * bz;
out[Offset3 + 3] = scale0 * aw + scale1 * bw;
return out;
}
static getRotation(x0, y0, x1, y1) {
return Math.atan2(y1 - y0, x1 - x0) / Math.PI * 180;
}
static sortBigFirst(a, b) {
if (a == b)
return 0;
return b > a ? 1 : -1;
}
static sortSmallFirst(a, b) {
if (a == b)
return 0;
return b > a ? -1 : 1;
}
static sortNumBigFirst(a, b) {
return parseFloat(b) - parseFloat(a);
}
static sortNumSmallFirst(a, b) {
return parseFloat(a) - parseFloat(b);
}
static sortByKey(key, bigFirst = false, forceNum = true) {
var _sortFun;
if (bigFirst) {
_sortFun = forceNum ? MathUtil.sortNumBigFirst : MathUtil.sortBigFirst;
}
else {
_sortFun = forceNum ? MathUtil.sortNumSmallFirst : MathUtil.sortSmallFirst;
}
return function (a, b) {
return _sortFun(a[key], b[key]);
};
}
}
exports.MathUtil = MathUtil;