782 lines
22 KiB
JavaScript
782 lines
22 KiB
JavaScript
/**
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* Path functionality.
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* @module path
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* @license MIT
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*
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* @copyright 2011 Alexis Deveria, 2011 Jeff Schiller
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*/
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import { shortFloat } from './units.js'
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import { transformPoint } from './math.js'
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import {
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getRotationAngle, getBBox,
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getRefElem, findDefs,
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getBBox as utilsGetBBox
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} from './utilities.js'
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import {
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init as pathMethodInit, ptObjToArrMethod, getGripPtMethod,
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getPointFromGripMethod, addPointGripMethod, getGripContainerMethod, addCtrlGripMethod,
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getCtrlLineMethod, getPointGripMethod, getControlPointsMethod, replacePathSegMethod,
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getSegSelectorMethod, Path
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} from './path-method.js'
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import {
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init as pathActionsInit, pathActionsMethod
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} from './path-actions.js'
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const segData = {
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2: ['x', 'y'], // PATHSEG_MOVETO_ABS
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4: ['x', 'y'], // PATHSEG_LINETO_ABS
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6: ['x', 'y', 'x1', 'y1', 'x2', 'y2'], // PATHSEG_CURVETO_CUBIC_ABS
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8: ['x', 'y', 'x1', 'y1'], // PATHSEG_CURVETO_QUADRATIC_ABS
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10: ['x', 'y', 'r1', 'r2', 'angle', 'largeArcFlag', 'sweepFlag'], // PATHSEG_ARC_ABS
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12: ['x'], // PATHSEG_LINETO_HORIZONTAL_ABS
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14: ['y'], // PATHSEG_LINETO_VERTICAL_ABS
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16: ['x', 'y', 'x2', 'y2'], // PATHSEG_CURVETO_CUBIC_SMOOTH_ABS
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18: ['x', 'y'] // PATHSEG_CURVETO_QUADRATIC_SMOOTH_ABS
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}
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let svgCanvas
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/**
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* @tutorial LocaleDocs
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* @typedef {module:locale.LocaleStrings|PlainObject} module:path.uiStrings
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* @property {PlainObject<string, string>} ui
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*/
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const uiStrings = {}
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/**
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* @function module:path.setUiStrings
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* @param {module:path.uiStrings} strs
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* @returns {void}
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*/
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export const setUiStrings = (strs) => {
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Object.assign(uiStrings, strs.ui)
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}
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let pathFuncs = []
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let linkControlPts = true
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// Stores references to paths via IDs.
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// TODO: Make this cross-document happy.
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let pathData = {}
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/**
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* @function module:path.setLinkControlPoints
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* @param {boolean} lcp
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* @returns {void}
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*/
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export const setLinkControlPoints = (lcp) => {
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linkControlPts = lcp
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}
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/**
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* @name module:path.path
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* @type {null|module:path.Path}
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* @memberof module:path
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*/
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export let path = null
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/**
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* @external MouseEvent
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*/
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/**
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* Object with the following keys/values.
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* @typedef {PlainObject} module:path.SVGElementJSON
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* @property {string} element - Tag name of the SVG element to create
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* @property {PlainObject<string, string>} attr - Has key-value attributes to assign to the new element.
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* An `id` should be set so that {@link module:utilities.EditorContext#addSVGElementsFromJson} can later re-identify the element for modification or replacement.
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* @property {boolean} [curStyles=false] - Indicates whether current style attributes should be applied first
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* @property {module:path.SVGElementJSON[]} [children] - Data objects to be added recursively as children
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* @property {string} [namespace="http://www.w3.org/2000/svg"] - Indicate a (non-SVG) namespace
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*/
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/**
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* @interface module:path.EditorContext
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* @property {module:select.SelectorManager} selectorManager
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* @property {module:svgcanvas.SvgCanvas} canvas
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*/
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/**
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* @function module:path.EditorContext#call
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* @param {"selected"|"changed"} ev - String with the event name
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* @param {module:svgcanvas.SvgCanvas#event:selected|module:svgcanvas.SvgCanvas#event:changed} arg - Argument to pass through to the callback function.
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* If the event is "changed", an array of `Element`s is passed; if "selected", a single-item array of `Element` is passed.
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* @returns {void}
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*/
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/**
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* Note: This doesn't round to an integer necessarily.
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* @function module:path.EditorContext#round
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* @param {Float} val
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* @returns {Float} Rounded value to nearest value based on `zoom`
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*/
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/**
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* @function module:path.EditorContext#clearSelection
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* @param {boolean} [noCall] - When `true`, does not call the "selected" handler
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* @returns {void}
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*/
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/**
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* @function module:path.EditorContext#addToSelection
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* @param {Element[]} elemsToAdd - An array of DOM elements to add to the selection
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* @param {boolean} showGrips - Indicates whether the resize grips should be shown
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* @returns {void}
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*/
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/**
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* @function module:path.EditorContext#addCommandToHistory
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* @param {Command} cmd
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* @returns {void}
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*/
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/**
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* @function module:path.EditorContext#remapElement
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* @param {Element} selected - DOM element to be changed
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* @param {PlainObject<string, string>} changes - Object with changes to be remapped
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* @param {SVGMatrix} m - Matrix object to use for remapping coordinates
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* @returns {void}
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*/
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/**
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* @function module:path.EditorContext#addSVGElementsFromJson
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* @param {module:path.SVGElementJSON} data
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* @returns {Element} The new element
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*/
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/**
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* @function module:path.EditorContext#getGridSnapping
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* @returns {boolean}
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*/
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/**
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* @function module:path.EditorContext#getOpacity
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* @returns {Float}
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*/
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/**
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* @function module:path.EditorContext#getSelectedElements
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* @returns {Element[]} the array with selected DOM elements
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*/
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/**
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* @function module:path.EditorContext#getContainer
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* @returns {Element}
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*/
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/**
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* @function module:path.EditorContext#setStarted
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* @param {boolean} s
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* @returns {void}
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*/
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/**
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* @function module:path.EditorContext#getRubberBox
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* @returns {SVGRectElement}
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*/
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/**
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* @function module:path.EditorContext#setRubberBox
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* @param {SVGRectElement} rb
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* @returns {SVGRectElement} Same as parameter passed in
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*/
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/**
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* @function module:path.EditorContext#addPtsToSelection
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* @param {PlainObject} cfg
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* @param {boolean} cfg.closedSubpath
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* @param {SVGCircleElement[]} cfg.grips
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* @returns {void}
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*/
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/**
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* @function module:path.EditorContext#endChanges
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* @param {PlainObject} cfg
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* @param {string} cfg.cmd
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* @param {Element} cfg.elem
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* @returns {void}
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*/
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/**
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* @function module:path.EditorContext#getZoom
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* @returns {Float} The current zoom level
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*/
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/**
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* Returns the last created DOM element ID string.
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* @function module:path.EditorContext#getId
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* @returns {string}
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*/
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/**
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* Creates and returns a unique ID string for a DOM element.
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* @function module:path.EditorContext#getNextId
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* @returns {string}
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*/
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/**
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* Gets the desired element from a mouse event.
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* @function module:path.EditorContext#getMouseTarget
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* @param {external:MouseEvent} evt - Event object from the mouse event
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* @returns {Element} DOM element we want
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*/
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/**
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* @function module:path.EditorContext#getCurrentMode
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* @returns {string}
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*/
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/**
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* @function module:path.EditorContext#setCurrentMode
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* @param {string} cm The mode
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* @returns {string} The same mode as passed in
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*/
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/**
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* @function module:path.EditorContext#setDrawnPath
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* @param {SVGPathElement|null} dp
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* @returns {SVGPathElement|null} The same value as passed in
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*/
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/**
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* @function module:path.EditorContext#getSvgRoot
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* @returns {SVGSVGElement}
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*/
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/**
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* @function module:path.init
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* @param {module:path.EditorContext} editorContext
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* @returns {void}
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*/
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export const init = (canvas) => {
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svgCanvas = canvas
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svgCanvas.replacePathSeg = replacePathSegMethod
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svgCanvas.addPointGrip = addPointGripMethod
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svgCanvas.removePath_ = removePath_
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svgCanvas.getPath_ = getPath_
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svgCanvas.addCtrlGrip = addCtrlGripMethod
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svgCanvas.getCtrlLine = getCtrlLineMethod
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svgCanvas.getGripPt = getGripPt
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svgCanvas.getPointFromGrip = getPointFromGripMethod
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svgCanvas.setLinkControlPoints = setLinkControlPoints
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svgCanvas.reorientGrads = reorientGrads
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svgCanvas.getSegData = () => { return segData }
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svgCanvas.getUIStrings = () => { return uiStrings }
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svgCanvas.getPathObj = () => { return path }
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svgCanvas.setPathObj = (obj) => { path = obj }
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svgCanvas.getPathFuncs = () => { return pathFuncs }
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svgCanvas.getLinkControlPts = () => { return linkControlPts }
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pathFuncs = [0, 'ClosePath']
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const pathFuncsStrs = [
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'Moveto', 'Lineto', 'CurvetoCubic', 'CurvetoQuadratic', 'Arc',
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'LinetoHorizontal', 'LinetoVertical', 'CurvetoCubicSmooth', 'CurvetoQuadraticSmooth'
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]
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pathFuncsStrs.forEach((s) => {
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pathFuncs.push(s + 'Abs')
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pathFuncs.push(s + 'Rel')
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})
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pathActionsInit(svgCanvas)
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pathMethodInit(svgCanvas)
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}
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/* eslint-disable max-len */
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/**
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* @function module:path.ptObjToArr
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* @todo See if this should just live in `replacePathSeg`
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* @param {string} type
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* @param {SVGPathSegMovetoAbs|SVGPathSegLinetoAbs|SVGPathSegCurvetoCubicAbs|SVGPathSegCurvetoQuadraticAbs|SVGPathSegArcAbs|SVGPathSegLinetoHorizontalAbs|SVGPathSegLinetoVerticalAbs|SVGPathSegCurvetoCubicSmoothAbs|SVGPathSegCurvetoQuadraticSmoothAbs} segItem
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* @returns {ArgumentsArray}
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*/
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/* eslint-enable max-len */
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export const ptObjToArr = ptObjToArrMethod
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/**
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* @function module:path.getGripPt
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* @param {Segment} seg
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* @param {module:math.XYObject} altPt
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* @returns {module:math.XYObject}
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*/
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export const getGripPt = getGripPtMethod
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/**
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* @function module:path.getPointFromGrip
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* @param {module:math.XYObject} pt
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* @param {module:path.Path} pth
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* @returns {module:math.XYObject}
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*/
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export const getPointFromGrip = getPointFromGripMethod
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/**
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* Requires prior call to `setUiStrings` if `xlink:title`
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* to be set on the grip.
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* @function module:path.addPointGrip
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* @param {Integer} index
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* @param {Integer} x
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* @param {Integer} y
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* @returns {SVGCircleElement}
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*/
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export const addPointGrip = addPointGripMethod
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/**
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* @function module:path.getGripContainer
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* @returns {Element}
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*/
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export const getGripContainer = getGripContainerMethod
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/**
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* Requires prior call to `setUiStrings` if `xlink:title`
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* to be set on the grip.
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* @function module:path.addCtrlGrip
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* @param {string} id
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* @returns {SVGCircleElement}
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*/
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export const addCtrlGrip = addCtrlGripMethod
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/**
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* @function module:path.getCtrlLine
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* @param {string} id
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* @returns {SVGLineElement}
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*/
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export const getCtrlLine = getCtrlLineMethod
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/**
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* @function module:path.getPointGrip
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* @param {Segment} seg
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* @param {boolean} update
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* @returns {SVGCircleElement}
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*/
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export const getPointGrip = getPointGripMethod
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/**
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* @function module:path.getControlPoints
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* @param {Segment} seg
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* @returns {PlainObject<string, SVGLineElement|SVGCircleElement>}
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*/
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export const getControlPoints = getControlPointsMethod
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/**
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* This replaces the segment at the given index. Type is given as number.
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* @function module:path.replacePathSeg
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* @param {Integer} type Possible values set during {@link module:path.init}
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* @param {Integer} index
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* @param {ArgumentsArray} pts
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* @param {SVGPathElement} elem
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* @returns {void}
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*/
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export const replacePathSeg = replacePathSegMethod
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/**
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* @function module:path.getSegSelector
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* @param {Segment} seg
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* @param {boolean} update
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* @returns {SVGPathElement}
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*/
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export const getSegSelector = getSegSelectorMethod
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/**
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* @typedef {PlainObject} Point
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* @property {Integer} x The x value
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* @property {Integer} y The y value
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*/
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/**
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* Takes three points and creates a smoother line based on them.
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* @function module:path.smoothControlPoints
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* @param {Point} ct1 - Object with x and y values (first control point)
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* @param {Point} ct2 - Object with x and y values (second control point)
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* @param {Point} pt - Object with x and y values (third point)
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* @returns {Point[]} Array of two "smoothed" point objects
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*/
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export const smoothControlPoints = (ct1, ct2, pt) => {
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// each point must not be the origin
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const x1 = ct1.x - pt.x
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const y1 = ct1.y - pt.y
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const x2 = ct2.x - pt.x
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const y2 = ct2.y - pt.y
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if ((x1 !== 0 || y1 !== 0) && (x2 !== 0 || y2 !== 0)) {
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const
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r1 = Math.sqrt(x1 * x1 + y1 * y1)
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const r2 = Math.sqrt(x2 * x2 + y2 * y2)
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const nct1 = svgCanvas.getSvgRoot().createSVGPoint()
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const nct2 = svgCanvas.getSvgRoot().createSVGPoint()
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let anglea = Math.atan2(y1, x1)
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let angleb = Math.atan2(y2, x2)
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if (anglea < 0) { anglea += 2 * Math.PI }
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if (angleb < 0) { angleb += 2 * Math.PI }
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const angleBetween = Math.abs(anglea - angleb)
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const angleDiff = Math.abs(Math.PI - angleBetween) / 2
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let newAnglea; let newAngleb
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if (anglea - angleb > 0) {
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newAnglea = angleBetween < Math.PI ? (anglea + angleDiff) : (anglea - angleDiff)
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newAngleb = angleBetween < Math.PI ? (angleb - angleDiff) : (angleb + angleDiff)
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} else {
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newAnglea = angleBetween < Math.PI ? (anglea - angleDiff) : (anglea + angleDiff)
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newAngleb = angleBetween < Math.PI ? (angleb + angleDiff) : (angleb - angleDiff)
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}
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// rotate the points
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nct1.x = r1 * Math.cos(newAnglea) + pt.x
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nct1.y = r1 * Math.sin(newAnglea) + pt.y
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nct2.x = r2 * Math.cos(newAngleb) + pt.x
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nct2.y = r2 * Math.sin(newAngleb) + pt.y
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return [nct1, nct2]
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}
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return undefined
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}
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/**
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* @function module:path.getPath_
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* @param {SVGPathElement} elem
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* @returns {module:path.Path}
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*/
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export const getPath_ = (elem) => {
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let p = pathData[elem.id]
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if (!p) {
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p = pathData[elem.id] = new Path(elem)
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}
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return p
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}
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/**
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* @function module:path.removePath_
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* @param {string} id
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* @returns {void}
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*/
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export const removePath_ = (id) => {
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if (id in pathData) { delete pathData[id] }
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}
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let newcx; let newcy; let oldcx; let oldcy; let angle
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const getRotVals = (x, y) => {
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let dx = x - oldcx
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let dy = y - oldcy
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// rotate the point around the old center
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let r = Math.sqrt(dx * dx + dy * dy)
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let theta = Math.atan2(dy, dx) + angle
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dx = r * Math.cos(theta) + oldcx
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dy = r * Math.sin(theta) + oldcy
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// dx,dy should now hold the actual coordinates of each
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// point after being rotated
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// now we want to rotate them around the new center in the reverse direction
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dx -= newcx
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dy -= newcy
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r = Math.sqrt(dx * dx + dy * dy)
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theta = Math.atan2(dy, dx) - angle
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return {
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x: r * Math.cos(theta) + newcx,
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y: r * Math.sin(theta) + newcy
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}
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}
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// If the path was rotated, we must now pay the piper:
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// Every path point must be rotated into the rotated coordinate system of
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// its old center, then determine the new center, then rotate it back
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// This is because we want the path to remember its rotation
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/**
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* @function module:path.recalcRotatedPath
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* @todo This is still using ye olde transform methods, can probably
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* be optimized or even taken care of by `recalculateDimensions`
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* @returns {void}
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*/
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export const recalcRotatedPath = () => {
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const currentPath = path.elem
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angle = getRotationAngle(currentPath, true)
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if (!angle) { return }
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// selectedBBoxes[0] = path.oldbbox;
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const oldbox = path.oldbbox // selectedBBoxes[0],
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oldcx = oldbox.x + oldbox.width / 2
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oldcy = oldbox.y + oldbox.height / 2
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const box = getBBox(currentPath)
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newcx = box.x + box.width / 2
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newcy = box.y + box.height / 2
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// un-rotate the new center to the proper position
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const dx = newcx - oldcx
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const dy = newcy - oldcy
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const r = Math.sqrt(dx * dx + dy * dy)
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const theta = Math.atan2(dy, dx) + angle
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newcx = r * Math.cos(theta) + oldcx
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newcy = r * Math.sin(theta) + oldcy
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const list = currentPath.pathSegList
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let i = list.numberOfItems
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while (i) {
|
|
i -= 1
|
|
const seg = list.getItem(i)
|
|
const type = seg.pathSegType
|
|
if (type === 1) { continue }
|
|
|
|
const rvals = getRotVals(seg.x, seg.y)
|
|
const points = [rvals.x, rvals.y]
|
|
if (seg.x1 && seg.x2) {
|
|
const cVals1 = getRotVals(seg.x1, seg.y1)
|
|
const cVals2 = getRotVals(seg.x2, seg.y2)
|
|
points.splice(points.length, 0, cVals1.x, cVals1.y, cVals2.x, cVals2.y)
|
|
}
|
|
replacePathSeg(type, i, points)
|
|
} // loop for each point
|
|
|
|
/* box = */ getBBox(currentPath)
|
|
// selectedBBoxes[0].x = box.x; selectedBBoxes[0].y = box.y;
|
|
// selectedBBoxes[0].width = box.width; selectedBBoxes[0].height = box.height;
|
|
|
|
// now we must set the new transform to be rotated around the new center
|
|
const Rnc = svgCanvas.getSvgRoot().createSVGTransform()
|
|
const tlist = currentPath.transform.baseVal
|
|
Rnc.setRotate((angle * 180.0 / Math.PI), newcx, newcy)
|
|
tlist.replaceItem(Rnc, 0)
|
|
}
|
|
|
|
// ====================================
|
|
// Public API starts here
|
|
|
|
/**
|
|
* @function module:path.clearData
|
|
* @returns {void}
|
|
*/
|
|
export const clearData = () => {
|
|
pathData = {}
|
|
}
|
|
|
|
// Making public for mocking
|
|
/**
|
|
* @function module:path.reorientGrads
|
|
* @param {Element} elem
|
|
* @param {SVGMatrix} m
|
|
* @returns {void}
|
|
*/
|
|
export const reorientGrads = (elem, m) => {
|
|
const bb = utilsGetBBox(elem)
|
|
for (let i = 0; i < 2; i++) {
|
|
const type = i === 0 ? 'fill' : 'stroke'
|
|
const attrVal = elem.getAttribute(type)
|
|
if (attrVal && attrVal.startsWith('url(')) {
|
|
const grad = getRefElem(attrVal)
|
|
if (grad.tagName === 'linearGradient') {
|
|
let x1 = grad.getAttribute('x1') || 0
|
|
let y1 = grad.getAttribute('y1') || 0
|
|
let x2 = grad.getAttribute('x2') || 1
|
|
let y2 = grad.getAttribute('y2') || 0
|
|
|
|
// Convert to USOU points
|
|
x1 = (bb.width * x1) + bb.x
|
|
y1 = (bb.height * y1) + bb.y
|
|
x2 = (bb.width * x2) + bb.x
|
|
y2 = (bb.height * y2) + bb.y
|
|
|
|
// Transform those points
|
|
const pt1 = transformPoint(x1, y1, m)
|
|
const pt2 = transformPoint(x2, y2, m)
|
|
|
|
// Convert back to BB points
|
|
const gCoords = {
|
|
x1: (pt1.x - bb.x) / bb.width,
|
|
y1: (pt1.y - bb.y) / bb.height,
|
|
x2: (pt2.x - bb.x) / bb.width,
|
|
y2: (pt2.y - bb.y) / bb.height
|
|
}
|
|
|
|
const newgrad = grad.cloneNode(true)
|
|
for (const [key, value] of Object.entries(gCoords)) {
|
|
newgrad.setAttribute(key, value)
|
|
}
|
|
newgrad.id = svgCanvas.getNextId()
|
|
findDefs().append(newgrad)
|
|
elem.setAttribute(type, 'url(#' + newgrad.id + ')')
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* This is how we map paths to our preferred relative segment types.
|
|
* @name module:path.pathMap
|
|
* @type {GenericArray}
|
|
*/
|
|
const pathMap = [
|
|
0, 'z', 'M', 'm', 'L', 'l', 'C', 'c', 'Q', 'q', 'A', 'a',
|
|
'H', 'h', 'V', 'v', 'S', 's', 'T', 't'
|
|
]
|
|
|
|
/**
|
|
* Convert a path to one with only absolute or relative values.
|
|
* @todo move to pathActions.js
|
|
* @function module:path.convertPath
|
|
* @param {SVGPathElement} pth - the path to convert
|
|
* @param {boolean} toRel - true of convert to relative
|
|
* @returns {string}
|
|
*/
|
|
export const convertPath = (pth, toRel) => {
|
|
const { pathSegList } = pth
|
|
const len = pathSegList.numberOfItems
|
|
let curx = 0; let cury = 0
|
|
let d = ''
|
|
let lastM = null
|
|
|
|
for (let i = 0; i < len; ++i) {
|
|
const seg = pathSegList.getItem(i)
|
|
// if these properties are not in the segment, set them to zero
|
|
let x = seg.x || 0
|
|
let y = seg.y || 0
|
|
let x1 = seg.x1 || 0
|
|
let y1 = seg.y1 || 0
|
|
let x2 = seg.x2 || 0
|
|
let y2 = seg.y2 || 0
|
|
|
|
const type = seg.pathSegType
|
|
let letter = pathMap[type][toRel ? 'toLowerCase' : 'toUpperCase']()
|
|
|
|
switch (type) {
|
|
case 1: // z,Z closepath (Z/z)
|
|
d += 'z'
|
|
if (lastM && !toRel) {
|
|
curx = lastM[0]
|
|
cury = lastM[1]
|
|
}
|
|
break
|
|
case 12: // absolute horizontal line (H)
|
|
x -= curx
|
|
// Fallthrough
|
|
case 13: // relative horizontal line (h)
|
|
if (toRel) {
|
|
y = 0
|
|
curx += x
|
|
letter = 'l'
|
|
} else {
|
|
y = cury
|
|
x += curx
|
|
curx = x
|
|
letter = 'L'
|
|
}
|
|
// Convert to "line" for easier editing
|
|
d += pathDSegment(letter, [[x, y]])
|
|
break
|
|
case 14: // absolute vertical line (V)
|
|
y -= cury
|
|
// Fallthrough
|
|
case 15: // relative vertical line (v)
|
|
if (toRel) {
|
|
x = 0
|
|
cury += y
|
|
letter = 'l'
|
|
} else {
|
|
x = curx
|
|
y += cury
|
|
cury = y
|
|
letter = 'L'
|
|
}
|
|
// Convert to "line" for easier editing
|
|
d += pathDSegment(letter, [[x, y]])
|
|
break
|
|
case 2: // absolute move (M)
|
|
case 4: // absolute line (L)
|
|
case 18: // absolute smooth quad (T)
|
|
case 10: // absolute elliptical arc (A)
|
|
x -= curx
|
|
y -= cury
|
|
// Fallthrough
|
|
case 5: // relative line (l)
|
|
case 3: // relative move (m)
|
|
case 19: // relative smooth quad (t)
|
|
if (toRel) {
|
|
curx += x
|
|
cury += y
|
|
} else {
|
|
x += curx
|
|
y += cury
|
|
curx = x
|
|
cury = y
|
|
}
|
|
if (type === 2 || type === 3) { lastM = [curx, cury] }
|
|
|
|
d += pathDSegment(letter, [[x, y]])
|
|
break
|
|
case 6: // absolute cubic (C)
|
|
x -= curx; x1 -= curx; x2 -= curx
|
|
y -= cury; y1 -= cury; y2 -= cury
|
|
// Fallthrough
|
|
case 7: // relative cubic (c)
|
|
if (toRel) {
|
|
curx += x
|
|
cury += y
|
|
} else {
|
|
x += curx; x1 += curx; x2 += curx
|
|
y += cury; y1 += cury; y2 += cury
|
|
curx = x
|
|
cury = y
|
|
}
|
|
d += pathDSegment(letter, [[x1, y1], [x2, y2], [x, y]])
|
|
break
|
|
case 8: // absolute quad (Q)
|
|
x -= curx; x1 -= curx
|
|
y -= cury; y1 -= cury
|
|
// Fallthrough
|
|
case 9: // relative quad (q)
|
|
if (toRel) {
|
|
curx += x
|
|
cury += y
|
|
} else {
|
|
x += curx; x1 += curx
|
|
y += cury; y1 += cury
|
|
curx = x
|
|
cury = y
|
|
}
|
|
d += pathDSegment(letter, [[x1, y1], [x, y]])
|
|
break
|
|
// Fallthrough
|
|
case 11: // relative elliptical arc (a)
|
|
if (toRel) {
|
|
curx += x
|
|
cury += y
|
|
} else {
|
|
x += curx
|
|
y += cury
|
|
curx = x
|
|
cury = y
|
|
}
|
|
d += pathDSegment(letter, [[seg.r1, seg.r2]], [
|
|
seg.angle,
|
|
(seg.largeArcFlag ? 1 : 0),
|
|
(seg.sweepFlag ? 1 : 0)
|
|
], [x, y])
|
|
break
|
|
case 16: // absolute smooth cubic (S)
|
|
x -= curx; x2 -= curx
|
|
y -= cury; y2 -= cury
|
|
// Fallthrough
|
|
case 17: // relative smooth cubic (s)
|
|
if (toRel) {
|
|
curx += x
|
|
cury += y
|
|
} else {
|
|
x += curx; x2 += curx
|
|
y += cury; y2 += cury
|
|
curx = x
|
|
cury = y
|
|
}
|
|
d += pathDSegment(letter, [[x2, y2], [x, y]])
|
|
break
|
|
} // switch on path segment type
|
|
} // for each segment
|
|
return d
|
|
}
|
|
|
|
/**
|
|
* TODO: refactor callers in `convertPath` to use `getPathDFromSegments` instead of this function.
|
|
* Legacy code refactored from `svgcanvas.pathActions.convertPath`.
|
|
* @param {string} letter - path segment command (letter in potentially either case from {@link module:path.pathMap}; see [SVGPathSeg#pathSegTypeAsLetter]{@link https://www.w3.org/TR/SVG/single-page.html#paths-__svg__SVGPathSeg__pathSegTypeAsLetter})
|
|
* @param {GenericArray<GenericArray<Integer>>} points - x,y points
|
|
* @param {GenericArray<GenericArray<Integer>>} [morePoints] - x,y points
|
|
* @param {Integer[]} [lastPoint] - x,y point
|
|
* @returns {string}
|
|
*/
|
|
const pathDSegment = (letter, points, morePoints, lastPoint) => {
|
|
points.forEach((pnt, i) => {
|
|
points[i] = shortFloat(pnt)
|
|
})
|
|
let segment = letter + points.join(' ')
|
|
if (morePoints) {
|
|
segment += ' ' + morePoints.join(' ')
|
|
}
|
|
if (lastPoint) {
|
|
segment += ' ' + shortFloat(lastPoint)
|
|
}
|
|
return segment
|
|
}
|
|
|
|
/**
|
|
* Group: Path edit functions.
|
|
* Functions relating to editing path elements.
|
|
*/
|
|
export const pathActions = pathActionsMethod
|
|
// end pathActions
|