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* Paper.js - The Swiss Army Knife of Vector Graphics Scripting.
* http://paperjs.org/
*
* Copyright (c) 2011 - 2020, Jürg Lehni & Jonathan Puckey
* http://juerglehni.com/ & https://puckey.studio/
*
* Distributed under the MIT license. See LICENSE file for details.
*
* All rights reserved.
*/
// TODO: remove eslint-disable comment and deal with errors over time
/* eslint-disable */
import { ref } from '~/globals';
import { Base } from '~/straps';
import { Point } from '~/basic/Point';
import { Item } from '~/item/Item';
import { Path } from './Path';
import { PathItem } from './PathItem';
/**
* @name CompoundPath
*
* @class A compound path is a complex path that is made up of one or more
* simple sub-paths. It can have the `nonzero` fill rule, or the `evenodd` rule
* applied. Both rules use mathematical equations to determine if any region is
* outside or inside the final shape. The `evenodd` rule is more predictable:
* Every other region within a such a compound path is a hole, regardless of
* path direction.
*
* All the paths in a compound path take on the style of the compound path and
* can be accessed through its {@link Item#children} list.
*
* @extends PathItem
*/
export const CompoundPath = PathItem.extend(
/** @lends CompoundPath# */ {
_class: 'CompoundPath',
_serializeFields: {
children: [],
},
// Enforce creation of beans, as bean getters have hidden parameters.
// See #getPathData() below.
beans: true,
/**
* Creates a new compound path item and places it in the active layer.
*
* @param {Path[]} [paths] the paths to place within the compound path
*
* @example {@paperscript}
* // Create a circle shaped path with a hole in it:
* var circle = new Path.Circle({
* center: new Point(50, 50),
* radius: 30
* });
*
* var innerCircle = new Path.Circle({
* center: new Point(50, 50),
* radius: 10
* });
*
* var compoundPath = new CompoundPath([circle, innerCircle]);
* compoundPath.fillColor = 'red';
*
* // Move the inner circle 5pt to the right:
* compoundPath.children[1].position.x += 5;
*/
/**
* Creates a new compound path item from an object description and places it
* at the top of the active layer.
*
* @name CompoundPath#initialize
* @param {Object} object an object containing properties to be set on the
* path
* @return {CompoundPath} the newly created path
*
* @example {@paperscript}
* var path = new CompoundPath({
* children: [
* new Path.Circle({
* center: new Point(50, 50),
* radius: 30
* }),
* new Path.Circle({
* center: new Point(50, 50),
* radius: 10
* })
* ],
* fillColor: 'black',
* selected: true
* });
*/
/**
* Creates a new compound path item from SVG path-data and places it at the
* top of the active layer.
*
* @name CompoundPath#initialize
* @param {String} pathData the SVG path-data that describes the geometry
* of this path
* @return {CompoundPath} the newly created path
*
* @example {@paperscript}
* var pathData = 'M20,50c0,-16.56854 13.43146,-30 30,-30c16.56854,0 30,13.43146 30,30c0,16.56854 -13.43146,30 -30,30c-16.56854,0 -30,-13.43146 -30,-30z M50,60c5.52285,0 10,-4.47715 10,-10c0,-5.52285 -4.47715,-10 -10,-10c-5.52285,0 -10,4.47715 -10,10c0,5.52285 4.47715,10 10,10z';
* var path = new CompoundPath(pathData);
* path.fillColor = 'black';
*/
initialize: function CompoundPath(arg) {
// CompoundPath has children and supports named children.
this._children = [];
this._namedChildren = {};
if (!this._initialize(arg)) {
if (typeof arg === 'string') {
this.setPathData(arg);
} else {
this.addChildren(Array.isArray(arg) ? arg : arguments);
}
}
},
insertChildren: function insertChildren(index, items) {
// If we're passed a segment array describing a simple path instead of a
// compound-path, wrap it in another array to turn it into the array
// notation for compound-paths.
var list = items,
first = list[0];
if (first && typeof first[0] === 'number') list = [list];
// Perform some conversions depending on the type of item passed:
// Convert array-notation to paths, and expand compound-paths in the
// items list by adding their children to the it replacing their parent.
for (var i = items.length - 1; i >= 0; i--) {
var item = list[i];
// Clone the list array before modifying it, as it may be a passed
// children array from another item.
if (list === items && !(item instanceof Path)) list = Base.slice(list);
if (Array.isArray(item)) {
list[i] = new Path({ segments: item, insert: false });
} else if (item instanceof CompoundPath) {
list.splice.apply(list, [i, 1].concat(item.removeChildren()));
item.remove();
}
}
return (insertChildren as any).base.call(this, index, list);
},
// DOCS: reduce()
// TEST: reduce()
reduce: function reduce(options) {
var children = this._children;
for (var i = children.length - 1; i >= 0; i--) {
var path = children[i].reduce(options);
if (path.isEmpty()) path.remove();
}
if (!children.length) {
// Replace with a simple empty Path
var path = new Path(Item.NO_INSERT);
path.copyAttributes(this);
path.insertAbove(this);
this.remove();
return path;
}
return (reduce as any).base.call(this);
},
/**
* Specifies whether the compound-path is fully closed, meaning all its
* contained sub-paths are closed path.
*
* @bean
* @type Boolean
* @see Path#closed
*/
isClosed: function () {
var children = this._children;
for (var i = 0, l = children.length; i < l; i++) {
if (!children[i]._closed) return false;
}
return true;
},
setClosed: function (closed) {
var children = this._children;
for (var i = 0, l = children.length; i < l; i++) {
children[i].setClosed(closed);
}
},
/**
* The first Segment contained within the compound-path, a short-cut to
* calling {@link Path#firstSegment} on {@link Item#firstChild}.
*
* @bean
* @type Segment
*/
getFirstSegment: function () {
var first = this.getFirstChild();
return first && first.getFirstSegment();
},
/**
* The last Segment contained within the compound-path, a short-cut to
* calling {@link Path#lastSegment} on {@link Item#lastChild}.
*
* @bean
* @type Segment
*/
getLastSegment: function () {
var last = this.getLastChild();
return last && last.getLastSegment();
},
/**
* All the curves contained within the compound-path, from all its child
* {@link Path} items.
*
* @bean
* @type Curve[]
*/
getCurves: function () {
var children = this._children,
curves = [];
for (var i = 0, l = children.length; i < l; i++) {
Base.push(curves, children[i].getCurves());
}
return curves;
},
/**
* The first Curve contained within the compound-path, a short-cut to
* calling {@link Path#firstCurve} on {@link Item#firstChild}.
*
* @bean
* @type Curve
*/
getFirstCurve: function () {
var first = this.getFirstChild();
return first && first.getFirstCurve();
},
/**
* The last Curve contained within the compound-path, a short-cut to
* calling {@link Path#lastCurve} on {@link Item#lastChild}.
*
* @bean
* @type Curve
*/
getLastCurve: function () {
var last = this.getLastChild();
return last && last.getLastCurve();
},
/**
* The area that the compound-path's geometry is covering, calculated by
* getting the {@link Path#area} of each sub-path and it adding up.
* Note that self-intersecting paths and sub-paths of different orientation
* can result in areas that cancel each other out.
*
* @bean
* @type Number
*/
getArea: function () {
var children = this._children,
area = 0;
for (var i = 0, l = children.length; i < l; i++) area += children[i].getArea();
return area;
},
/**
* The total length of all sub-paths in this compound-path, calculated by
* getting the {@link Path#length} of each sub-path and it adding up.
*
* @bean
* @type Number
*/
getLength: function () {
var children = this._children,
length = 0;
for (var i = 0, l = children.length; i < l; i++) length += children[i].getLength();
return length;
},
getPathData: function (_matrix, _precision) {
// NOTE: #setPathData() is defined in PathItem.
var children = this._children,
paths = [];
for (var i = 0, l = children.length; i < l; i++) {
var child = children[i],
mx = child._matrix;
paths.push(child.getPathData(_matrix && !mx.isIdentity() ? _matrix.appended(mx) : _matrix, _precision));
}
return paths.join('');
},
_hitTestChildren: function _hitTestChildren(point, options, viewMatrix) {
return (_hitTestChildren as any).base.call(
this,
point,
// If we're not specifically asked to returns paths through
// options.class == Path, do not test children for fill, since a
// compound path forms one shape.
// Also support legacy format `type: 'path'`.
options.class === Path || options.type === 'path' ? options : Base.set({}, options, { fill: false }),
viewMatrix
);
},
_draw: function (ctx, param, viewMatrix, strokeMatrix) {
var children = this._children;
// Return early if the compound path doesn't have any children:
if (!children.length) return;
param = param.extend({ dontStart: true, dontFinish: true });
ctx.beginPath();
for (var i = 0, l = children.length; i < l; i++) children[i].draw(ctx, param, strokeMatrix);
if (!param.clip) {
this._setStyles(ctx, param, viewMatrix);
var style = this._style;
if (style.hasFill()) {
ctx.fill(style.getFillRule());
ctx.shadowColor = 'rgba(0,0,0,0)';
}
if (style.hasStroke()) ctx.stroke();
}
},
_drawSelected: function (ctx, matrix, selectionItems) {
var children = this._children;
for (var i = 0, l = children.length; i < l; i++) {
var child = children[i],
mx = child._matrix;
// Do not draw this child now if it's separately marked as selected,
// as it would be drawn twice otherwise.
if (!selectionItems[child._id]) {
child._drawSelected(ctx, mx.isIdentity() ? matrix : matrix.appended(mx));
}
}
},
},
// @ts-expect-error = 'new' expression, whose target lacks a construct signature
new (function () {
// Injection scope for PostScript-like drawing functions
/**
* Helper method that returns the current path and checks if a moveTo()
* command is required first.
*/
function getCurrentPath(that, check) {
var children = that._children;
if (check && !children.length) throw new Error('Use a moveTo() command first');
return children[children.length - 1];
}
// Redirect all other drawing commands to the current path
return Base.each(
[
'lineTo',
'cubicCurveTo',
'quadraticCurveTo',
'curveTo',
'arcTo',
'lineBy',
'cubicCurveBy',
'quadraticCurveBy',
'curveBy',
'arcBy',
],
function (key) {
this[key] = function () {
var path = getCurrentPath(this, true);
path[key].apply(path, arguments);
};
},
{
// NOTE: Documentation for these methods is found in PathItem, as
// they are considered abstract methods of PathItem and need to be
// defined in all implementing classes.
moveTo: function (/* point */) {
// @ts-expect-error = Expected 2 arguments, but got 1
var current = getCurrentPath(this),
// Reuse current path if nothing was added yet
path = current && current.isEmpty() ? current : new Path(Item.NO_INSERT);
if (path !== current) this.addChild(path);
path.moveTo.apply(path, arguments);
},
moveBy: function (/* point */) {
var current = getCurrentPath(this, true),
last = current && current.getLastSegment(),
point = Point.read(arguments);
this.moveTo(last ? point.add(last._point) : point);
},
closePath: function (tolerance) {
getCurrentPath(this, true).closePath(tolerance);
},
}
);
})(),
Base.each(
['reverse', 'flatten', 'simplify', 'smooth'],
function (key) {
// Injection scope for methods forwarded to the child paths.
// NOTE: Documentation is in PathItem
this[key] = function (param) {
var children = this._children,
res;
for (var i = 0, l = children.length; i < l; i++) {
res = children[i][key](param) || res;
}
return res;
};
},
{}
)
);
ref.CompoundPath = CompoundPath;
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