backend/libs/three/math/Vector3.js

import * as MathUtils from './MathUtils.js';
import { Quaternion } from './Quaternion.js';

class Vector3 {
	constructor(x = 0, y = 0, z = 0) {
		this.x = x;
		this.y = y;
		this.z = z;
	}

	set(x, y, z) {
		if (z === undefined) z = this.z; // sprite.scale.set(x,y)

		this.x = x;
		this.y = y;
		this.z = z;

		return this;
	}

	setScalar(scalar) {
		this.x = scalar;
		this.y = scalar;
		this.z = scalar;

		return this;
	}

	setX(x) {
		this.x = x;

		return this;
	}

	setY(y) {
		this.y = y;

		return this;
	}

	setZ(z) {
		this.z = z;

		return this;
	}

	setComponent(index, value) {
		switch (index) {
			case 0:
				this.x = value;
				break;
			case 1:
				this.y = value;
				break;
			case 2:
				this.z = value;
				break;
			default:
				throw new Error('index is out of range: ' + index);
		}

		return this;
	}

	getComponent(index) {
		switch (index) {
			case 0:
				return this.x;
			case 1:
				return this.y;
			case 2:
				return this.z;
			default:
				throw new Error('index is out of range: ' + index);
		}
	}

	clone() {
		return new this.constructor(this.x, this.y, this.z);
	}

	copy(v) {
		this.x = v.x;
		this.y = v.y;
		this.z = v.z;

		return this;
	}

	add(v, w) {
		if (w !== undefined) {
			console.warn('THREE.Vector3: .add() now only accepts one argument. Use .addVectors( a, b ) instead.');
			return this.addVectors(v, w);
		}

		this.x += v.x;
		this.y += v.y;
		this.z += v.z;

		return this;
	}

	addScalar(s) {
		this.x += s;
		this.y += s;
		this.z += s;

		return this;
	}

	addVectors(a, b) {
		this.x = a.x + b.x;
		this.y = a.y + b.y;
		this.z = a.z + b.z;

		return this;
	}

	addScaledVector(v, s) {
		this.x += v.x * s;
		this.y += v.y * s;
		this.z += v.z * s;

		return this;
	}

	sub(v, w) {
		if (w !== undefined) {
			console.warn('THREE.Vector3: .sub() now only accepts one argument. Use .subVectors( a, b ) instead.');
			return this.subVectors(v, w);
		}

		this.x -= v.x;
		this.y -= v.y;
		this.z -= v.z;

		return this;
	}

	subScalar(s) {
		this.x -= s;
		this.y -= s;
		this.z -= s;

		return this;
	}

	subVectors(a, b) {
		this.x = a.x - b.x;
		this.y = a.y - b.y;
		this.z = a.z - b.z;

		return this;
	}

	multiply(v, w) {
		if (w !== undefined) {
			console.warn('THREE.Vector3: .multiply() now only accepts one argument. Use .multiplyVectors( a, b ) instead.');
			return this.multiplyVectors(v, w);
		}

		this.x *= v.x;
		this.y *= v.y;
		this.z *= v.z;

		return this;
	}

	multiplyScalar(scalar) {
		this.x *= scalar;
		this.y *= scalar;
		this.z *= scalar;

		return this;
	}

	multiplyVectors(a, b) {
		this.x = a.x * b.x;
		this.y = a.y * b.y;
		this.z = a.z * b.z;

		return this;
	}

	applyEuler(euler) {
		if (!(euler && euler.isEuler)) {
			console.error('THREE.Vector3: .applyEuler() now expects an Euler rotation rather than a Vector3 and order.');
		}

		return this.applyQuaternion(_quaternion.setFromEuler(euler));
	}

	applyAxisAngle(axis, angle) {
		return this.applyQuaternion(_quaternion.setFromAxisAngle(axis, angle));
	}

	applyMatrix3(m) {
		const x = this.x,
			y = this.y,
			z = this.z;
		const e = m.elements;

		this.x = e[0] * x + e[3] * y + e[6] * z;
		this.y = e[1] * x + e[4] * y + e[7] * z;
		this.z = e[2] * x + e[5] * y + e[8] * z;

		return this;
	}

	applyNormalMatrix(m) {
		return this.applyMatrix3(m).normalize();
	}

	applyMatrix4(m) {
		const x = this.x,
			y = this.y,
			z = this.z;
		const e = m.elements;

		const w = 1 / (e[3] * x + e[7] * y + e[11] * z + e[15]);

		this.x = (e[0] * x + e[4] * y + e[8] * z + e[12]) * w;
		this.y = (e[1] * x + e[5] * y + e[9] * z + e[13]) * w;
		this.z = (e[2] * x + e[6] * y + e[10] * z + e[14]) * w;

		return this;
	}

	applyQuaternion(q) {
		const x = this.x,
			y = this.y,
			z = this.z;
		const qx = q.x,
			qy = q.y,
			qz = q.z,
			qw = q.w;

		// calculate quat * vector

		const ix = qw * x + qy * z - qz * y;
		const iy = qw * y + qz * x - qx * z;
		const iz = qw * z + qx * y - qy * x;
		const iw = -qx * x - qy * y - qz * z;

		// calculate result * inverse quat

		this.x = ix * qw + iw * -qx + iy * -qz - iz * -qy;
		this.y = iy * qw + iw * -qy + iz * -qx - ix * -qz;
		this.z = iz * qw + iw * -qz + ix * -qy - iy * -qx;

		return this;
	}

	project(camera) {
		return this.applyMatrix4(camera.matrixWorldInverse).applyMatrix4(camera.projectionMatrix);
	}

	unproject(camera) {
		return this.applyMatrix4(camera.projectionMatrixInverse).applyMatrix4(camera.matrixWorld);
	}

	transformDirection(m) {
		// input: THREE.Matrix4 affine matrix
		// vector interpreted as a direction

		const x = this.x,
			y = this.y,
			z = this.z;
		const e = m.elements;

		this.x = e[0] * x + e[4] * y + e[8] * z;
		this.y = e[1] * x + e[5] * y + e[9] * z;
		this.z = e[2] * x + e[6] * y + e[10] * z;

		return this.normalize();
	}

	divide(v) {
		this.x /= v.x;
		this.y /= v.y;
		this.z /= v.z;

		return this;
	}

	divideScalar(scalar) {
		return this.multiplyScalar(1 / scalar);
	}

	min(v) {
		this.x = Math.min(this.x, v.x);
		this.y = Math.min(this.y, v.y);
		this.z = Math.min(this.z, v.z);

		return this;
	}

	max(v) {
		this.x = Math.max(this.x, v.x);
		this.y = Math.max(this.y, v.y);
		this.z = Math.max(this.z, v.z);

		return this;
	}

	clamp(min, max) {
		// assumes min < max, componentwise

		this.x = Math.max(min.x, Math.min(max.x, this.x));
		this.y = Math.max(min.y, Math.min(max.y, this.y));
		this.z = Math.max(min.z, Math.min(max.z, this.z));

		return this;
	}

	clampScalar(minVal, maxVal) {
		this.x = Math.max(minVal, Math.min(maxVal, this.x));
		this.y = Math.max(minVal, Math.min(maxVal, this.y));
		this.z = Math.max(minVal, Math.min(maxVal, this.z));

		return this;
	}

	clampLength(min, max) {
		const length = this.length();

		return this.divideScalar(length || 1).multiplyScalar(Math.max(min, Math.min(max, length)));
	}

	floor() {
		this.x = Math.floor(this.x);
		this.y = Math.floor(this.y);
		this.z = Math.floor(this.z);

		return this;
	}

	ceil() {
		this.x = Math.ceil(this.x);
		this.y = Math.ceil(this.y);
		this.z = Math.ceil(this.z);

		return this;
	}

	round() {
		this.x = Math.round(this.x);
		this.y = Math.round(this.y);
		this.z = Math.round(this.z);

		return this;
	}

	roundToZero() {
		this.x = this.x < 0 ? Math.ceil(this.x) : Math.floor(this.x);
		this.y = this.y < 0 ? Math.ceil(this.y) : Math.floor(this.y);
		this.z = this.z < 0 ? Math.ceil(this.z) : Math.floor(this.z);

		return this;
	}

	negate() {
		this.x = -this.x;
		this.y = -this.y;
		this.z = -this.z;

		return this;
	}

	dot(v) {
		return this.x * v.x + this.y * v.y + this.z * v.z;
	}

	// TODO lengthSquared?

	lengthSq() {
		return this.x * this.x + this.y * this.y + this.z * this.z;
	}

	length() {
		return Math.sqrt(this.x * this.x + this.y * this.y + this.z * this.z);
	}

	manhattanLength() {
		return Math.abs(this.x) + Math.abs(this.y) + Math.abs(this.z);
	}

	normalize() {
		return this.divideScalar(this.length() || 1);
	}

	setLength(length) {
		return this.normalize().multiplyScalar(length);
	}

	lerp(v, alpha) {
		this.x += (v.x - this.x) * alpha;
		this.y += (v.y - this.y) * alpha;
		this.z += (v.z - this.z) * alpha;

		return this;
	}

	lerpVectors(v1, v2, alpha) {
		this.x = v1.x + (v2.x - v1.x) * alpha;
		this.y = v1.y + (v2.y - v1.y) * alpha;
		this.z = v1.z + (v2.z - v1.z) * alpha;

		return this;
	}

	cross(v, w) {
		if (w !== undefined) {
			console.warn('THREE.Vector3: .cross() now only accepts one argument. Use .crossVectors( a, b ) instead.');
			return this.crossVectors(v, w);
		}

		return this.crossVectors(this, v);
	}

	crossVectors(a, b) {
		const ax = a.x,
			ay = a.y,
			az = a.z;
		const bx = b.x,
			by = b.y,
			bz = b.z;

		this.x = ay * bz - az * by;
		this.y = az * bx - ax * bz;
		this.z = ax * by - ay * bx;

		return this;
	}

	projectOnVector(v) {
		const denominator = v.lengthSq();

		if (denominator === 0) return this.set(0, 0, 0);

		const scalar = v.dot(this) / denominator;

		return this.copy(v).multiplyScalar(scalar);
	}

	projectOnPlane(planeNormal) {
		_vector.copy(this).projectOnVector(planeNormal);

		return this.sub(_vector);
	}

	reflect(normal) {
		// reflect incident vector off plane orthogonal to normal
		// normal is assumed to have unit length

		return this.sub(_vector.copy(normal).multiplyScalar(2 * this.dot(normal)));
	}

	angleTo(v) {
		const denominator = Math.sqrt(this.lengthSq() * v.lengthSq());

		if (denominator === 0) return Math.PI / 2;

		const theta = this.dot(v) / denominator;

		// clamp, to handle numerical problems

		return Math.acos(MathUtils.clamp(theta, -1, 1));
	}

	distanceTo(v) {
		return Math.sqrt(this.distanceToSquared(v));
	}

	distanceToSquared(v) {
		const dx = this.x - v.x,
			dy = this.y - v.y,
			dz = this.z - v.z;

		return dx * dx + dy * dy + dz * dz;
	}

	manhattanDistanceTo(v) {
		return Math.abs(this.x - v.x) + Math.abs(this.y - v.y) + Math.abs(this.z - v.z);
	}

	setFromSpherical(s) {
		return this.setFromSphericalCoords(s.radius, s.phi, s.theta);
	}

	setFromSphericalCoords(radius, phi, theta) {
		const sinPhiRadius = Math.sin(phi) * radius;

		this.x = sinPhiRadius * Math.sin(theta);
		this.y = Math.cos(phi) * radius;
		this.z = sinPhiRadius * Math.cos(theta);

		return this;
	}

	setFromCylindrical(c) {
		return this.setFromCylindricalCoords(c.radius, c.theta, c.y);
	}

	setFromCylindricalCoords(radius, theta, y) {
		this.x = radius * Math.sin(theta);
		this.y = y;
		this.z = radius * Math.cos(theta);

		return this;
	}

	setFromMatrixPosition(m) {
		const e = m.elements;

		this.x = e[12];
		this.y = e[13];
		this.z = e[14];

		return this;
	}

	setFromMatrixScale(m) {
		const sx = this.setFromMatrixColumn(m, 0).length();
		const sy = this.setFromMatrixColumn(m, 1).length();
		const sz = this.setFromMatrixColumn(m, 2).length();

		this.x = sx;
		this.y = sy;
		this.z = sz;

		return this;
	}

	setFromMatrixColumn(m, index) {
		return this.fromArray(m.elements, index * 4);
	}

	setFromMatrix3Column(m, index) {
		return this.fromArray(m.elements, index * 3);
	}

	equals(v) {
		return v.x === this.x && v.y === this.y && v.z === this.z;
	}

	fromArray(array, offset = 0) {
		this.x = array[offset];
		this.y = array[offset + 1];
		this.z = array[offset + 2];

		return this;
	}

	toArray(array = [], offset = 0) {
		array[offset] = this.x;
		array[offset + 1] = this.y;
		array[offset + 2] = this.z;

		return array;
	}

	fromBufferAttribute(attribute, index, offset) {
		if (offset !== undefined) {
			console.warn('THREE.Vector3: offset has been removed from .fromBufferAttribute().');
		}

		this.x = attribute.getX(index);
		this.y = attribute.getY(index);
		this.z = attribute.getZ(index);

		return this;
	}

	random() {
		this.x = Math.random();
		this.y = Math.random();
		this.z = Math.random();

		return this;
	}

	randomDirection() {
		// Derived from https://mathworld.wolfram.com/SpherePointPicking.html

		const u = (Math.random() - 0.5) * 2;
		const t = Math.random() * Math.PI * 2;
		const f = Math.sqrt(1 - u ** 2);

		this.x = f * Math.cos(t);
		this.y = f * Math.sin(t);
		this.z = u;

		return this;
	}

	*[Symbol.iterator]() {
		yield this.x;
		yield this.y;
		yield this.z;
	}
}

Vector3.prototype.isVector3 = true;

const _vector = /*@__PURE__*/ new Vector3();
const _quaternion = /*@__PURE__*/ new Quaternion();

export { Vector3 };