8ea9c133
 陈威
初始化提交
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/**
* User: CHT
* Date: 2020/5/8
* Time: 14:01
*/
import {
minus,
uuid,
vector,
mark
} from './utils'
import {
direction,
directionVector
} from './types'
export default class GraphNode {
constructor (props, graph) {
const {
width = 180,
height = 100,
coordinate = [0, 0],
meta = null
} = props
this.$options = props
const id = props[mark.relationMark] || uuid('node')
this.key = uuid('node')
this.graph = graph
this[mark.relationMark] = id
this.coordinate = [...coordinate]
this.meta = meta
this.width = width
this.height = height
}
get position () {
return vector(this.coordinate)
.add(this.graph.origin)
.end
}
set position (position) {
this.coordinate = vector(position)
.minus(this.graph.origin)
.end
}
get center () {
return vector(this.coordinate)
.add([this.width / 2, this.height / 2])
.end
}
set center (position) {
this.coordinate = vector(position)
.minus([this.width / 2, this.height / 2])
.end
}
get width () {
return this._width
}
set width (w) {
w = Math.floor(w)
this._width = w > 50 ? w : 50
this.angle()
}
get height () {
return this._height
}
set height (h) {
h = Math.floor(h)
this._height = h > 20 ? h : 20
this.angle()
}
angle () {
const
w = this.width / 2
, h = this.height / 2
, center = [0, 0]
const topLeft = vector(center)
.minus([w, h])
.angle()
.end
const topRight = vector(center)
.add([w, 0])
.minus([0, h])
.angle()
.end
const bottomRight = vector(center)
.add([w, h])
.angle()
.end
const bottomLeft = vector(center)
.add([0, h])
.minus([w, 0])
.angle()
.end
this.angleList = [
topLeft,
topRight,
bottomRight,
bottomLeft
]
}
relative (offset) {
const angle = vector(offset)
.minus([this.width / 2, this.height / 2])
.angle()
.end
const angleList = this.angleList
const directionList = [
direction.top,
direction.right,
direction.bottom,
direction.left
]
let dir = direction.left
angleList.reduce((prev, current, idx) => {
if (angle >= prev && angle < current) {
dir = directionList[idx - 1]
}
return current
})
return {
position: this.fixOffset(offset, dir),
direction: directionVector[dir]
}
}
fixOffset (offset, dir) {
switch (dir) {
case direction.top:
offset[0] = this.width / 2
offset[1] = 0
break
case direction.right:
offset[0] = this.width
offset[1] = this.height / 2
break
case direction.bottom:
offset[0] = this.width / 2
offset[1] = this.height
break
case direction.left:
default:
offset[0] = 0
offset[1] = this.height / 2
break
}
return offset
}
remove () {
return this.graph.removeNode(this)
}
toJSON () {
return {
[mark.relationMark]: this[mark.relationMark],
width: this.width,
height: this.height,
coordinate: [...this.coordinate],
meta: this.meta
}
}
}
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