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@jtopo/core / Point

Class: Point

只是提供了一些操作点和点集合的静态方法

Table of contents

Constructors

Methods

Constructors

constructor

new Point()

Methods

distance

Static distance(x, y, x2, y2): number

计算两点之间的距离

Parameters

NameType
xnumber
ynumber
x2number
y2number

Returns

number


getAngle

Static getAngle(x, y, x2, y2): number

Parameters

NameType
xnumber
ynumber
x2number
y2number

Returns

number


isLikePoint

Static isLikePoint(object): boolean

Parameters

NameType
objectany

Returns

boolean


lerp

Static lerp(a, b, t): PointLike

根据给定的比例t,计算出线段上一点

Parameters

NameTypeDescription
aPointLike第一个点的坐标
bPointLike第二个点的坐标
tnumber比例值,公式:(1-t) * a + t*b

Returns

PointLike

  • 插值点的坐标

looksSame

Static looksSame(p1, p2, e): boolean

Parameters

NameType
p1PointLike
p2PointLike
enumber

Returns

boolean


middle

Static middle(p1, p2): Object

Parameters

NameType
p1PointLike
p2PointLike

Returns

Object

NameType
xnumber
ynumber

rotate

Static rotate(x, y, cx, cy, angle): PointLike

点(x,y) 绕点 (cx,cy) 旋转angle后的坐标

Parameters

NameType
xnumber
ynumber
cxnumber
cynumber
anglenumber

Returns

PointLike