@jtopo/core / vec2

Class: vec2

二维向量计算

Table of contents

Constructors

• constructor

Properties

• add
• cross
• dot
• len
• multiplyC
• negate
• normalize
• projection
• scale

Constructors

constructor

new vec2()

Properties

add

Static add: (out: Vec2Type, v1: Vec2Type, v2: Vec2Type) => Vec2Type = add

Type declaration

(out, v1, v2): Vec2Type

Parameters

Name	Type
out	Vec2Type
v1	Vec2Type
v2	Vec2Type

Returns

Vec2Type

---

cross

Static cross: (v1: Vec2Type, v2: Vec2Type) => number = cross

Type declaration

(v1, v2): number

Parameters

Name	Type
v1	Vec2Type
v2	Vec2Type

Returns

number

---

dot

Static dot: (v1: Vec2Type, v2: Vec2Type) => number = dot

Type declaration

(v1, v2): number

Parameters

Name	Type
v1	Vec2Type
v2	Vec2Type

Returns

number

---

len

Static len: (v: Vec2Type) => number = len

Type declaration

(v): number

Parameters

Name	Type
v	Vec2Type

Returns

number

---

multiplyC

Static multiplyC: (out: Vec2Type, v1: Vec2Type, c: number) => Vec2Type = multiplyC

Type declaration

(out, v1, c): Vec2Type

Parameters

Name	Type
out	Vec2Type
v1	Vec2Type
c	number

Returns

Vec2Type

---

negate

Static negate: (out: Vec2Type, a: Vec2Type) => Vec2Type = negate

Type declaration

(out, a): Vec2Type

Parameters

Name	Type
out	Vec2Type
a	Vec2Type

Returns

Vec2Type

---

normalize

Static normalize: (out: Vec2Type, v: Vec2Type) => Vec2Type = normalize

Type declaration

(out, v): Vec2Type

Parameters

Name	Type
out	Vec2Type
v	Vec2Type

Returns

Vec2Type

---

projection

Static projection: (out: Vec2Type, v: Vec2Type, n: Vec2Type) => Vec2Type = projection

Type declaration

(out, v, n): Vec2Type

Parameters

Name	Type
out	Vec2Type
v	Vec2Type
n	Vec2Type

Returns

Vec2Type

---

scale

Static scale: (out: Vec2Type, v: Vec2Type, s: number) => Vec2Type = scale

Type declaration

(out, v, s): Vec2Type

Parameters

Name	Type
out	Vec2Type
v	Vec2Type
s	number

Returns

Vec2Type