/**
* Path functionality.
* @module path
* @license MIT
*
* @copyright 2011 Alexis Deveria, 2011 Jeff Schiller
*/
import { NS } from './namespaces.js'
import { ChangeElementCommand } from './history.js'
import {
transformPoint, getMatrix
} from './math.js'
import {
assignAttributes, getRotationAngle,
getElement
} from './utilities.js'
let svgCanvas = null
/**
* @function module:path-actions.init
* @param {module:path-actions.svgCanvas} pathMethodsContext
* @returns {void}
*/
export const init = (canvas) => {
svgCanvas = canvas
}
/* eslint-disable max-len */
/**
* @function module:path.ptObjToArr
* @todo See if this should just live in `replacePathSeg`
* @param {string} type
* @param {SVGPathSegMovetoAbs|SVGPathSegLinetoAbs|SVGPathSegCurvetoCubicAbs|SVGPathSegCurvetoQuadraticAbs|SVGPathSegArcAbs|SVGPathSegLinetoHorizontalAbs|SVGPathSegLinetoVerticalAbs|SVGPathSegCurvetoCubicSmoothAbs|SVGPathSegCurvetoQuadraticSmoothAbs} segItem
* @returns {ArgumentsArray}
*/
/* eslint-enable max-len */
export const ptObjToArrMethod = function (type, segItem) {
const segData = svgCanvas.getSegData()
const props = segData[type]
return props.map((prop) => {
return segItem[prop]
})
}
/**
* @function module:path.getGripPt
* @param {Segment} seg
* @param {module:math.XYObject} altPt
* @returns {module:math.XYObject}
*/
export const getGripPtMethod = function (seg, altPt) {
const { path: pth } = seg
let out = {
x: altPt ? altPt.x : seg.item.x,
y: altPt ? altPt.y : seg.item.y
}
if (pth.matrix) {
const pt = transformPoint(out.x, out.y, pth.matrix)
out = pt
}
const zoom = svgCanvas.getZoom()
out.x *= zoom
out.y *= zoom
return out
}
/**
* @function module:path.getPointFromGrip
* @param {module:math.XYObject} pt
* @param {module:path.Path} pth
* @returns {module:math.XYObject}
*/
export const getPointFromGripMethod = function (pt, pth) {
const out = {
x: pt.x,
y: pt.y
}
if (pth.matrix) {
pt = transformPoint(out.x, out.y, pth.imatrix)
out.x = pt.x
out.y = pt.y
}
const zoom = svgCanvas.getZoom()
out.x /= zoom
out.y /= zoom
return out
}
/**
* @function module:path.getGripContainer
* @returns {Element}
*/
export const getGripContainerMethod = function () {
let c = getElement('pathpointgrip_container')
if (!c) {
const parentElement = getElement('selectorParentGroup')
c = document.createElementNS(NS.SVG, 'g')
parentElement.append(c)
c.id = 'pathpointgrip_container'
}
return c
}
/**
* Requires prior call to `setUiStrings` if `xlink:title`
* to be set on the grip.
* @function module:path.addPointGrip
* @param {Integer} index
* @param {Integer} x
* @param {Integer} y
* @returns {SVGCircleElement}
*/
export const addPointGripMethod = function (index, x, y) {
// create the container of all the point grips
const pointGripContainer = getGripContainerMethod()
let pointGrip = getElement('pathpointgrip_' + index)
// create it
if (!pointGrip) {
pointGrip = document.createElementNS(NS.SVG, 'circle')
const atts = {
id: 'pathpointgrip_' + index,
display: 'none',
r: 4,
fill: '#0FF',
stroke: '#00F',
'stroke-width': 2,
cursor: 'move',
style: 'pointer-events:all'
}
const uiStrings = svgCanvas.getUIStrings()
if ('pathNodeTooltip' in uiStrings) { // May be empty if running path.js without svg-editor
atts['xlink:title'] = uiStrings.pathNodeTooltip
}
assignAttributes(pointGrip, atts)
pointGripContainer.append(pointGrip)
const grip = document.getElementById('pathpointgrip_' + index)
grip?.addEventListener('dblclick', () => {
const path = svgCanvas.getPathObj()
if (path) {
path.setSegType()
}
})
}
if (x && y) {
// set up the point grip element and display it
assignAttributes(pointGrip, {
cx: x,
cy: y,
display: 'inline'
})
}
return pointGrip
}
/**
* Requires prior call to `setUiStrings` if `xlink:title`
* to be set on the grip.
* @function module:path.addCtrlGrip
* @param {string} id
* @returns {SVGCircleElement}
*/
export const addCtrlGripMethod = function (id) {
let pointGrip = getElement('ctrlpointgrip_' + id)
if (pointGrip) { return pointGrip }
pointGrip = document.createElementNS(NS.SVG, 'circle')
const atts = {
id: 'ctrlpointgrip_' + id,
display: 'none',
r: 4,
fill: '#0FF',
stroke: '#55F',
'stroke-width': 1,
cursor: 'move',
style: 'pointer-events:all'
}
const uiStrings = svgCanvas.getUIStrings()
if ('pathCtrlPtTooltip' in uiStrings) { // May be empty if running path.js without svg-editor
atts['xlink:title'] = uiStrings.pathCtrlPtTooltip
}
assignAttributes(pointGrip, atts)
getGripContainerMethod().append(pointGrip)
return pointGrip
}
/**
* @function module:path.getCtrlLine
* @param {string} id
* @returns {SVGLineElement}
*/
export const getCtrlLineMethod = function (id) {
let ctrlLine = getElement('ctrlLine_' + id)
if (ctrlLine) { return ctrlLine }
ctrlLine = document.createElementNS(NS.SVG, 'line')
assignAttributes(ctrlLine, {
id: 'ctrlLine_' + id,
stroke: '#555',
'stroke-width': 1,
style: 'pointer-events:none'
})
getGripContainerMethod().append(ctrlLine)
return ctrlLine
}
/**
* @function module:path.getPointGrip
* @param {Segment} seg
* @param {boolean} update
* @returns {SVGCircleElement}
*/
export const getPointGripMethod = function (seg, update) {
const { index } = seg
const pointGrip = addPointGripMethod(index)
if (update) {
const pt = getGripPtMethod(seg)
assignAttributes(pointGrip, {
cx: pt.x,
cy: pt.y,
display: 'inline'
})
}
return pointGrip
}
/**
* @function module:path.getControlPoints
* @param {Segment} seg
* @returns {PlainObject<string, SVGLineElement|SVGCircleElement>}
*/
export const getControlPointsMethod = function (seg) {
const { item, index } = seg
if (!('x1' in item) || !('x2' in item)) { return null }
const cpt = {}
/* const pointGripContainer = */ getGripContainerMethod()
// Note that this is intentionally not seg.prev.item
const path = svgCanvas.getPathObj()
const prev = path.segs[index - 1].item
const segItems = [prev, item]
for (let i = 1; i < 3; i++) {
const id = index + 'c' + i
const ctrlLine = cpt['c' + i + '_line'] = getCtrlLineMethod(id)
const pt = getGripPtMethod(seg, { x: item['x' + i], y: item['y' + i] })
const gpt = getGripPtMethod(seg, { x: segItems[i - 1].x, y: segItems[i - 1].y })
assignAttributes(ctrlLine, {
x1: pt.x,
y1: pt.y,
x2: gpt.x,
y2: gpt.y,
display: 'inline'
})
cpt['c' + i + '_line'] = ctrlLine
// create it
const pointGrip = cpt['c' + i] = addCtrlGripMethod(id)
assignAttributes(pointGrip, {
cx: pt.x,
cy: pt.y,
display: 'inline'
})
cpt['c' + i] = pointGrip
}
return cpt
}
/**
* This replaces the segment at the given index. Type is given as number.
* @function module:path.replacePathSeg
* @param {Integer} type Possible values set during {@link module:path.init}
* @param {Integer} index
* @param {ArgumentsArray} pts
* @param {SVGPathElement} elem
* @returns {void}
*/
export const replacePathSegMethod = function (type, index, pts, elem) {
const path = svgCanvas.getPathObj()
const pth = elem || path.elem
const pathFuncs = svgCanvas.getPathFuncs()
const func = 'createSVGPathSeg' + pathFuncs[type]
const seg = pth[func](...pts)
pth.pathSegList.replaceItem(seg, index)
}
/**
* @function module:path.getSegSelector
* @param {Segment} seg
* @param {boolean} update
* @returns {SVGPathElement}
*/
export const getSegSelectorMethod = function (seg, update) {
const { index } = seg
let segLine = getElement('segline_' + index)
if (!segLine) {
const pointGripContainer = getGripContainerMethod()
// create segline
segLine = document.createElementNS(NS.SVG, 'path')
assignAttributes(segLine, {
id: 'segline_' + index,
display: 'none',
fill: 'none',
stroke: '#0FF',
'stroke-width': 2,
style: 'pointer-events:none',
d: 'M0,0 0,0'
})
pointGripContainer.append(segLine)
}
if (update) {
const { prev } = seg
if (!prev) {
segLine.setAttribute('display', 'none')
return segLine
}
const pt = getGripPtMethod(prev)
// Set start point
replacePathSegMethod(2, 0, [pt.x, pt.y], segLine)
const pts = ptObjToArrMethod(seg.type, seg.item) // , true);
for (let i = 0; i < pts.length; i += 2) {
const point = getGripPtMethod(seg, { x: pts[i], y: pts[i + 1] })
pts[i] = point.x
pts[i + 1] = point.y
}
replacePathSegMethod(seg.type, 1, pts, segLine)
}
return segLine
}
/**
*
*/
export class Segment {
/**
* @param {Integer} index
* @param {SVGPathSeg} item
* @todo Is `item` be more constrained here?
*/
constructor (index, item) {
this.selected = false
this.index = index
this.item = item
this.type = item.pathSegType
this.ctrlpts = []
this.ptgrip = null
this.segsel = null
}
/**
* @param {boolean} y
* @returns {void}
*/
showCtrlPts (y) {
for (const i in this.ctrlpts) {
if ({}.hasOwnProperty.call(this.ctrlpts, i)) {
this.ctrlpts[i].setAttribute('display', y ? 'inline' : 'none')
}
}
}
/**
* @param {boolean} y
* @returns {void}
*/
selectCtrls (y) {
document.getElementById('ctrlpointgrip_' + this.index + 'c1').setAttribute('fill', y ? '#0FF' : '#EEE')
document.getElementById('ctrlpointgrip_' + this.index + 'c2').setAttribute('fill', y ? '#0FF' : '#EEE')
}
/**
* @param {boolean} y
* @returns {void}
*/
show (y) {
if (this.ptgrip) {
this.ptgrip.setAttribute('display', y ? 'inline' : 'none')
this.segsel.setAttribute('display', y ? 'inline' : 'none')
// Show/hide all control points if available
this.showCtrlPts(y)
}
}
/**
* @param {boolean} y
* @returns {void}
*/
select (y) {
if (this.ptgrip) {
this.ptgrip.setAttribute('stroke', y ? '#0FF' : '#00F')
this.segsel.setAttribute('display', y ? 'inline' : 'none')
if (this.ctrlpts) {
this.selectCtrls(y)
}
this.selected = y
}
}
/**
* @returns {void}
*/
addGrip () {
this.ptgrip = getPointGripMethod(this, true)
this.ctrlpts = getControlPointsMethod(this) // , true);
this.segsel = getSegSelectorMethod(this, true)
}
/**
* @param {boolean} full
* @returns {void}
*/
update (full) {
if (this.ptgrip) {
const pt = getGripPtMethod(this)
assignAttributes(this.ptgrip, {
cx: pt.x,
cy: pt.y
})
getSegSelectorMethod(this, true)
if (this.ctrlpts) {
if (full) {
const path = svgCanvas.getPathObj()
this.item = path.elem.pathSegList.getItem(this.index)
this.type = this.item.pathSegType
}
getControlPointsMethod(this)
}
// this.segsel.setAttribute('display', y ? 'inline' : 'none');
}
}
/**
* @param {Integer} dx
* @param {Integer} dy
* @returns {void}
*/
move (dx, dy) {
const { item } = this
const curPts = this.ctrlpts
? [
item.x += dx, item.y += dy,
item.x1, item.y1, item.x2 += dx, item.y2 += dy
]
: [item.x += dx, item.y += dy]
replacePathSegMethod(
this.type,
this.index,
// type 10 means ARC
this.type === 10 ? ptObjToArrMethod(this.type, item) : curPts
)
if (this.next?.ctrlpts) {
const next = this.next.item
const nextPts = [
next.x, next.y,
next.x1 += dx, next.y1 += dy, next.x2, next.y2
]
replacePathSegMethod(this.next.type, this.next.index, nextPts)
}
if (this.mate) {
// The last point of a closed subpath has a 'mate',
// which is the 'M' segment of the subpath
const { item: itm } = this.mate
const pts = [itm.x += dx, itm.y += dy]
replacePathSegMethod(this.mate.type, this.mate.index, pts)
// Has no grip, so does not need 'updating'?
}
this.update(true)
if (this.next) { this.next.update(true) }
}
/**
* @param {Integer} num
* @returns {void}
*/
setLinked (num) {
let seg; let anum; let pt
if (num === 2) {
anum = 1
seg = this.next
if (!seg) { return }
pt = this.item
} else {
anum = 2
seg = this.prev
if (!seg) { return }
pt = seg.item
}
const { item } = seg
item['x' + anum] = pt.x + (pt.x - this.item['x' + num])
item['y' + anum] = pt.y + (pt.y - this.item['y' + num])
const pts = [
item.x, item.y,
item.x1, item.y1,
item.x2, item.y2
]
replacePathSegMethod(seg.type, seg.index, pts)
seg.update(true)
}
/**
* @param {Integer} num
* @param {Integer} dx
* @param {Integer} dy
* @returns {void}
*/
moveCtrl (num, dx, dy) {
const { item } = this
item['x' + num] += dx
item['y' + num] += dy
const pts = [
item.x, item.y,
item.x1, item.y1, item.x2, item.y2
]
replacePathSegMethod(this.type, this.index, pts)
this.update(true)
}
/**
* @param {Integer} newType Possible values set during {@link module:path.init}
* @param {ArgumentsArray} pts
* @returns {void}
*/
setType (newType, pts) {
replacePathSegMethod(newType, this.index, pts)
this.type = newType
const path = svgCanvas.getPathObj()
this.item = path.elem.pathSegList.getItem(this.index)
this.showCtrlPts(newType === 6)
this.ctrlpts = getControlPointsMethod(this)
this.update(true)
}
}
/**
*
*/
export class Path {
/**
* @param {SVGPathElement} elem
* @throws {Error} If constructed without a path element
*/
constructor (elem) {
if (!elem || elem.tagName !== 'path') {
throw new Error('svgedit.path.Path constructed without a <path> element')
}
this.elem = elem
this.segs = []
this.selected_pts = []
svgCanvas.setPathObj(this)
// path = this;
this.init()
}
setPathContext () {
svgCanvas.setPathObj(this)
}
/**
* Reset path data.
* @returns {module:path.Path}
*/
init () {
// Hide all grips, etc
// fixed, needed to work on all found elements, not just first
const pointGripContainer = getGripContainerMethod()
const elements = pointGripContainer.querySelectorAll('*')
Array.prototype.forEach.call(elements, function (el) {
el.setAttribute('display', 'none')
})
const segList = this.elem.pathSegList
const len = segList.numberOfItems
this.segs = []
this.selected_pts = []
this.first_seg = null
// Set up segs array
for (let i = 0; i < len; i++) {
const item = segList.getItem(i)
const segment = new Segment(i, item)
segment.path = this
this.segs.push(segment)
}
const { segs } = this
let startI = null
for (let i = 0; i < len; i++) {
const seg = segs[i]
const nextSeg = (i + 1) >= len ? null : segs[i + 1]
const prevSeg = (i - 1) < 0 ? null : segs[i - 1]
if (seg.type === 2) {
if (prevSeg && prevSeg.type !== 1) {
// New sub-path, last one is open,
// so add a grip to last sub-path's first point
const startSeg = segs[startI]
startSeg.next = segs[startI + 1]
startSeg.next.prev = startSeg
startSeg.addGrip()
}
// Remember that this is a starter seg
startI = i
} else if (nextSeg?.type === 1) {
// This is the last real segment of a closed sub-path
// Next is first seg after "M"
seg.next = segs[startI + 1]
// First seg after "M"'s prev is this
seg.next.prev = seg
seg.mate = segs[startI]
seg.addGrip()
if (!this.first_seg) {
this.first_seg = seg
}
} else if (!nextSeg) {
if (seg.type !== 1) {
// Last seg, doesn't close so add a grip
// to last sub-path's first point
const startSeg = segs[startI]
startSeg.next = segs[startI + 1]
startSeg.next.prev = startSeg
startSeg.addGrip()
seg.addGrip()
if (!this.first_seg) {
// Open path, so set first as real first and add grip
this.first_seg = segs[startI]
}
}
} else if (seg.type !== 1) {
// Regular segment, so add grip and its "next"
seg.addGrip()
// Don't set its "next" if it's an "M"
if (nextSeg && nextSeg.type !== 2) {
seg.next = nextSeg
seg.next.prev = seg
}
}
}
return this
}
/**
* @callback module:path.PathEachSegCallback
* @this module:path.Segment
* @param {Integer} i The index of the seg being iterated
* @returns {boolean|void} Will stop execution of `eachSeg` if returns `false`
*/
/**
* @param {module:path.PathEachSegCallback} fn
* @returns {void}
*/
eachSeg (fn) {
const len = this.segs.length
for (let i = 0; i < len; i++) {
const ret = fn.call(this.segs[i], i)
if (ret === false) { break }
}
}
/**
* @param {Integer} index
* @returns {void}
*/
addSeg (index) {
// Adds a new segment
const seg = this.segs[index]
if (!seg.prev) { return }
const { prev } = seg
let newseg; let newX; let newY
switch (seg.item.pathSegType) {
case 4: {
newX = (seg.item.x + prev.item.x) / 2
newY = (seg.item.y + prev.item.y) / 2
newseg = this.elem.createSVGPathSegLinetoAbs(newX, newY)
break
} case 6: { // make it a curved segment to preserve the shape (WRS)
// https://en.wikipedia.org/wiki/De_Casteljau%27s_algorithm#Geometric_interpretation
const p0x = (prev.item.x + seg.item.x1) / 2
const p1x = (seg.item.x1 + seg.item.x2) / 2
const p2x = (seg.item.x2 + seg.item.x) / 2
const p01x = (p0x + p1x) / 2
const p12x = (p1x + p2x) / 2
newX = (p01x + p12x) / 2
const p0y = (prev.item.y + seg.item.y1) / 2
const p1y = (seg.item.y1 + seg.item.y2) / 2
const p2y = (seg.item.y2 + seg.item.y) / 2
const p01y = (p0y + p1y) / 2
const p12y = (p1y + p2y) / 2
newY = (p01y + p12y) / 2
newseg = this.elem.createSVGPathSegCurvetoCubicAbs(newX, newY, p0x, p0y, p01x, p01y)
const pts = [seg.item.x, seg.item.y, p12x, p12y, p2x, p2y]
replacePathSegMethod(seg.type, index, pts)
break
}
}
const list = this.elem.pathSegList
list.insertItemBefore(newseg, index)
}
/**
* @param {Integer} index
* @returns {void}
*/
deleteSeg (index) {
const seg = this.segs[index]
const list = this.elem.pathSegList
seg.show(false)
const { next } = seg
if (seg.mate) {
// Make the next point be the "M" point
const pt = [next.item.x, next.item.y]
replacePathSegMethod(2, next.index, pt)
// Reposition last node
replacePathSegMethod(4, seg.index, pt)
list.removeItem(seg.mate.index)
} else if (!seg.prev) {
// First node of open path, make next point the M
// const {item} = seg;
const pt = [next.item.x, next.item.y]
replacePathSegMethod(2, seg.next.index, pt)
list.removeItem(index)
} else {
list.removeItem(index)
}
}
/**
* @param {Integer} index
* @returns {void}
*/
removePtFromSelection (index) {
const pos = this.selected_pts.indexOf(index)
if (pos === -1) {
return
}
this.segs[index].select(false)
this.selected_pts.splice(pos, 1)
}
/**
* @returns {void}
*/
clearSelection () {
this.eachSeg(function () {
// 'this' is the segment here
this.select(false)
})
this.selected_pts = []
}
/**
* @returns {void}
*/
storeD () {
this.last_d = this.elem.getAttribute('d')
}
/**
* @param {Integer} y
* @returns {Path}
*/
show (y) {
// Shows this path's segment grips
this.eachSeg(function () {
// 'this' is the segment here
this.show(y)
})
if (y) {
this.selectPt(this.first_seg.index)
}
return this
}
/**
* Move selected points.
* @param {Integer} dx
* @param {Integer} dy
* @returns {void}
*/
movePts (dx, dy) {
let i = this.selected_pts.length
while (i--) {
const seg = this.segs[this.selected_pts[i]]
seg.move(dx, dy)
}
}
/**
* @param {Integer} dx
* @param {Integer} dy
* @returns {void}
*/
moveCtrl (dx, dy) {
const seg = this.segs[this.selected_pts[0]]
seg.moveCtrl(this.dragctrl, dx, dy)
if (svgCanvas.getLinkControlPts()) {
seg.setLinked(this.dragctrl)
}
}
/**
* @param {?Integer} newType See {@link https://www.w3.org/TR/SVG/single-page.html#paths-InterfaceSVGPathSeg}
* @returns {void}
*/
setSegType (newType) {
this.storeD()
let i = this.selected_pts.length
let text
while (i--) {
const selPt = this.selected_pts[i]
// Selected seg
const cur = this.segs[selPt]
const { prev } = cur
if (!prev) { continue }
if (!newType) { // double-click, so just toggle
text = 'Toggle Path Segment Type'
// Toggle segment to curve/straight line
const oldType = cur.type
newType = (oldType === 6) ? 4 : 6
}
newType = Number(newType)
const curX = cur.item.x
const curY = cur.item.y
const prevX = prev.item.x
const prevY = prev.item.y
let points
switch (newType) {
case 6: {
if (cur.olditem) {
const old = cur.olditem
points = [curX, curY, old.x1, old.y1, old.x2, old.y2]
} else {
const diffX = curX - prevX
const diffY = curY - prevY
// get control points from straight line segment
/*
const ct1x = (prevX + (diffY/2));
const ct1y = (prevY - (diffX/2));
const ct2x = (curX + (diffY/2));
const ct2y = (curY - (diffX/2));
*/
// create control points on the line to preserve the shape (WRS)
const ct1x = (prevX + (diffX / 3))
const ct1y = (prevY + (diffY / 3))
const ct2x = (curX - (diffX / 3))
const ct2y = (curY - (diffY / 3))
points = [curX, curY, ct1x, ct1y, ct2x, ct2y]
}
break
} case 4: {
points = [curX, curY]
// Store original prevve segment nums
cur.olditem = cur.item
break
}
}
cur.setType(newType, points)
}
const path = svgCanvas.getPathObj()
path.endChanges(text)
}
/**
* @param {Integer} pt
* @param {Integer} ctrlNum
* @returns {void}
*/
selectPt (pt, ctrlNum) {
this.clearSelection()
if (!pt) {
this.eachSeg(function (i) {
// 'this' is the segment here.
if (this.prev) {
pt = i
}
})
}
this.addPtsToSelection(pt)
if (ctrlNum) {
this.dragctrl = ctrlNum
if (svgCanvas.getLinkControlPts()) {
this.segs[pt].setLinked(ctrlNum)
}
}
}
/**
* Update position of all points.
* @returns {Path}
*/
update () {
const { elem } = this
if (getRotationAngle(elem)) {
this.matrix = getMatrix(elem)
this.imatrix = this.matrix.inverse()
} else {
this.matrix = null
this.imatrix = null
}
this.eachSeg(function (i) {
this.item = elem.pathSegList.getItem(i)
this.update()
})
return this
}
/**
* @param {string} text
* @returns {void}
*/
endChanges (text) {
const cmd = new ChangeElementCommand(this.elem, { d: this.last_d }, text)
svgCanvas.endChanges({ cmd, elem: this.elem })
}
/**
* @param {Integer|Integer[]} indexes
* @returns {void}
*/
addPtsToSelection (indexes) {
if (!Array.isArray(indexes)) { indexes = [indexes] }
indexes.forEach((index) => {
const seg = this.segs[index]
if (seg.ptgrip && !this.selected_pts.includes(index) && index >= 0) {
this.selected_pts.push(index)
}
})
this.selected_pts.sort()
let i = this.selected_pts.length
const grips = []
grips.length = i
// Loop through points to be selected and highlight each
while (i--) {
const pt = this.selected_pts[i]
const seg = this.segs[pt]
seg.select(true)
grips[i] = seg.ptgrip
}
const closedSubpath = Path.subpathIsClosed(this.selected_pts[0])
svgCanvas.addPtsToSelection({ grips, closedSubpath })
}
// STATIC
/**
* @param {Integer} index
* @returns {boolean}
*/
static subpathIsClosed (index) {
let clsd = false
// Check if subpath is already open
const path = svgCanvas.getPathObj()
path.eachSeg(function (i) {
if (i <= index) { return true }
if (this.type === 2) {
// Found M first, so open
return false
}
if (this.type === 1) {
// Found Z first, so closed
clsd = true
return false
}
return true
})
return clsd
}
}