File size: 5,514 Bytes
1e92f2d | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 | import filter from 'lodash/filter.js'
import isNumber from 'lodash/isNumber.js'
import omit from 'lodash/omit.js'
import {
radiansToDegrees,
normalizeAngleDegrees,
degreesToRadians,
positionFromAngle,
} from '@nivo/core'
import { defaultProps } from './props'
import {
AnnotationPositionGetter,
AnnotationDimensionsGetter,
BoundAnnotation,
AnnotationMatcher,
AnnotationInstructions,
} from './types'
import { isCircleAnnotation, isRectAnnotation } from './utils'
export const bindAnnotations = <
Datum = {
x: number
y: number
},
>({
data,
annotations,
getPosition,
getDimensions,
}: {
data: readonly Datum[]
annotations: readonly AnnotationMatcher<Datum>[]
getPosition: AnnotationPositionGetter<Datum>
getDimensions: AnnotationDimensionsGetter<Datum>
}): BoundAnnotation<Datum>[] =>
annotations.reduce((acc: BoundAnnotation<Datum>[], annotation) => {
const offset = annotation.offset || 0
return [
...acc,
...filter<Datum>(data, annotation.match).map(datum => {
const position = getPosition(datum)
const dimensions = getDimensions(datum)
if (isCircleAnnotation(annotation) || isRectAnnotation(annotation)) {
dimensions.size = dimensions.size + offset * 2
dimensions.width = dimensions.width + offset * 2
dimensions.height = dimensions.height + offset * 2
}
// acc.push({
// ...omit(annotation, ['match', 'offset']),
// ...position,
// ...dimensions,
// size: annotation.size || dimensions.size,
// datum,
// } as any)
// return [
// ...acc,
// {
// ...omit(annotation, ['match', 'offset']),
// ...position,
// ...dimensions,
// size: annotation.size || dimensions.size,
// datum,
// },
// ]
return {
...omit(annotation, ['match', 'offset']),
...position,
...dimensions,
size: annotation.size || dimensions.size,
datum,
} as Required<BoundAnnotation<Datum>>
}),
]
// return acc
}, [])
export const getLinkAngle = (
sourceX: number,
sourceY: number,
targetX: number,
targetY: number
) => {
const angle = Math.atan2(targetY - sourceY, targetX - sourceX)
return normalizeAngleDegrees(radiansToDegrees(angle))
}
export const computeAnnotation = <Datum>(
annotation: BoundAnnotation<Datum>
): AnnotationInstructions => {
const {
x,
y,
noteX,
noteY,
noteWidth = defaultProps.noteWidth,
noteTextOffset = defaultProps.noteTextOffset,
} = annotation
let computedNoteX: number
let computedNoteY: number
if (isNumber(noteX)) {
computedNoteX = x + noteX
} else if (noteX.abs !== undefined) {
computedNoteX = noteX.abs
} else {
throw new Error(`noteX should be either a number or an object containing an 'abs' property`)
}
if (isNumber(noteY)) {
computedNoteY = y + noteY
} else if (noteY.abs !== undefined) {
computedNoteY = noteY.abs
} else {
throw new Error(`noteY should be either a number or an object containing an 'abs' property`)
}
let computedX = x
let computedY = y
const angle = getLinkAngle(x, y, computedNoteX, computedNoteY)
if (isCircleAnnotation<Datum>(annotation)) {
const position = positionFromAngle(degreesToRadians(angle), annotation.size / 2)
computedX += position.x
computedY += position.y
}
if (isRectAnnotation<Datum>(annotation)) {
const eighth = Math.round((angle + 90) / 45) % 8
if (eighth === 0) {
computedY -= annotation.height / 2
}
if (eighth === 1) {
computedX += annotation.width / 2
computedY -= annotation.height / 2
}
if (eighth === 2) {
computedX += annotation.width / 2
}
if (eighth === 3) {
computedX += annotation.width / 2
computedY += annotation.height / 2
}
if (eighth === 4) {
computedY += annotation.height / 2
}
if (eighth === 5) {
computedX -= annotation.width / 2
computedY += annotation.height / 2
}
if (eighth === 6) {
computedX -= annotation.width / 2
}
if (eighth === 7) {
computedX -= annotation.width / 2
computedY -= annotation.height / 2
}
}
let textX = computedNoteX
const textY = computedNoteY - noteTextOffset
let noteLineX = computedNoteX
const noteLineY = computedNoteY
if ((angle + 90) % 360 > 180) {
textX -= noteWidth
noteLineX -= noteWidth
} else {
noteLineX += noteWidth
}
return {
points: [
[computedX, computedY],
[computedNoteX, computedNoteY],
[noteLineX, noteLineY],
] as [number, number][],
text: [textX, textY],
angle: angle + 90,
}
}
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