scrawl-canvas
Version:
Version 8.9.4 - 19 Nov 2022
1,032 lines (666 loc) • 90.3 kB
HTML
<!DOCTYPE html>
<html>
<head>
<title>Shape-curve mixin</title>
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
<meta name="viewport" content="width=device-width, target-densitydpi=160dpi, initial-scale=1.0; maximum-scale=1.0; user-scalable=0;">
<link rel="stylesheet" media="all" href="../../docco.css" />
</head>
<body>
<div id="container">
<div id="background"></div>
<ul id="jump_to">
<li>
<a class="large" href="javascript:void(0);">Jump To …</a>
<a class="small" href="javascript:void(0);">+</a>
<div id="jump_wrapper">
<div id="jump_page_wrapper">
<div id="jump_page">
<a class="source" href="../core/animationloop.html">
./source/core/animationloop.js
</a>
<a class="source" href="../core/document.html">
./source/core/document.js
</a>
<a class="source" href="../core/events.html">
./source/core/events.js
</a>
<a class="source" href="../core/init.html">
./source/core/init.js
</a>
<a class="source" href="../core/library.html">
./source/core/library.js
</a>
<a class="source" href="../core/random-seed.html">
./source/core/random-seed.js
</a>
<a class="source" href="../core/snippets.html">
./source/core/snippets.js
</a>
<a class="source" href="../core/userInteraction.html">
./source/core/userInteraction.js
</a>
<a class="source" href="../core/utilities.html">
./source/core/utilities.js
</a>
<a class="source" href="../factory/action.html">
./source/factory/action.js
</a>
<a class="source" href="../factory/anchor.html">
./source/factory/anchor.js
</a>
<a class="source" href="../factory/animation.html">
./source/factory/animation.js
</a>
<a class="source" href="../factory/bezier.html">
./source/factory/bezier.js
</a>
<a class="source" href="../factory/block.html">
./source/factory/block.js
</a>
<a class="source" href="../factory/canvas.html">
./source/factory/canvas.js
</a>
<a class="source" href="../factory/cell.html">
./source/factory/cell.js
</a>
<a class="source" href="../factory/cog.html">
./source/factory/cog.js
</a>
<a class="source" href="../factory/color.html">
./source/factory/color.js
</a>
<a class="source" href="../factory/conicGradient.html">
./source/factory/conicGradient.js
</a>
<a class="source" href="../factory/coordinate.html">
./source/factory/coordinate.js
</a>
<a class="source" href="../factory/crescent.html">
./source/factory/crescent.js
</a>
<a class="source" href="../factory/element.html">
./source/factory/element.js
</a>
<a class="source" href="../factory/emitter.html">
./source/factory/emitter.js
</a>
<a class="source" href="../factory/filter.html">
./source/factory/filter.js
</a>
<a class="source" href="../factory/filterEngine-bluenoiseData.html">
./source/factory/filterEngine-bluenoiseData.js
</a>
<a class="source" href="../factory/filterEngine.html">
./source/factory/filterEngine.js
</a>
<a class="source" href="../factory/fontAttributes.html">
./source/factory/fontAttributes.js
</a>
<a class="source" href="../factory/gradient.html">
./source/factory/gradient.js
</a>
<a class="source" href="../factory/grid.html">
./source/factory/grid.js
</a>
<a class="source" href="../factory/group.html">
./source/factory/group.js
</a>
<a class="source" href="../factory/imageAsset.html">
./source/factory/imageAsset.js
</a>
<a class="source" href="../factory/line.html">
./source/factory/line.js
</a>
<a class="source" href="../factory/lineSpiral.html">
./source/factory/lineSpiral.js
</a>
<a class="source" href="../factory/loom.html">
./source/factory/loom.js
</a>
<a class="source" href="../factory/mesh.html">
./source/factory/mesh.js
</a>
<a class="source" href="../factory/net.html">
./source/factory/net.js
</a>
<a class="source" href="../factory/noiseAsset.html">
./source/factory/noiseAsset.js
</a>
<a class="source" href="../factory/oval.html">
./source/factory/oval.js
</a>
<a class="source" href="../factory/palette.html">
./source/factory/palette.js
</a>
<a class="source" href="../factory/particle.html">
./source/factory/particle.js
</a>
<a class="source" href="../factory/particleForce.html">
./source/factory/particleForce.js
</a>
<a class="source" href="../factory/particleHistory.html">
./source/factory/particleHistory.js
</a>
<a class="source" href="../factory/particleSpring.html">
./source/factory/particleSpring.js
</a>
<a class="source" href="../factory/particleWorld.html">
./source/factory/particleWorld.js
</a>
<a class="source" href="../factory/pattern.html">
./source/factory/pattern.js
</a>
<a class="source" href="../factory/phrase.html">
./source/factory/phrase.js
</a>
<a class="source" href="../factory/picture.html">
./source/factory/picture.js
</a>
<a class="source" href="../factory/polygon.html">
./source/factory/polygon.js
</a>
<a class="source" href="../factory/polyline.html">
./source/factory/polyline.js
</a>
<a class="source" href="../factory/quadratic.html">
./source/factory/quadratic.js
</a>
<a class="source" href="../factory/quaternion.html">
./source/factory/quaternion.js
</a>
<a class="source" href="../factory/radialGradient.html">
./source/factory/radialGradient.js
</a>
<a class="source" href="../factory/rawAsset.html">
./source/factory/rawAsset.js
</a>
<a class="source" href="../factory/rdAsset.html">
./source/factory/rdAsset.js
</a>
<a class="source" href="../factory/rectangle.html">
./source/factory/rectangle.js
</a>
<a class="source" href="../factory/renderAnimation.html">
./source/factory/renderAnimation.js
</a>
<a class="source" href="../factory/shape.html">
./source/factory/shape.js
</a>
<a class="source" href="../factory/spiral.html">
./source/factory/spiral.js
</a>
<a class="source" href="../factory/spriteAsset.html">
./source/factory/spriteAsset.js
</a>
<a class="source" href="../factory/stack.html">
./source/factory/stack.js
</a>
<a class="source" href="../factory/star.html">
./source/factory/star.js
</a>
<a class="source" href="../factory/state.html">
./source/factory/state.js
</a>
<a class="source" href="../factory/tetragon.html">
./source/factory/tetragon.js
</a>
<a class="source" href="../factory/ticker.html">
./source/factory/ticker.js
</a>
<a class="source" href="../factory/tracer.html">
./source/factory/tracer.js
</a>
<a class="source" href="../factory/tween.html">
./source/factory/tween.js
</a>
<a class="source" href="../factory/unstackedElement.html">
./source/factory/unstackedElement.js
</a>
<a class="source" href="../factory/vector.html">
./source/factory/vector.js
</a>
<a class="source" href="../factory/videoAsset.html">
./source/factory/videoAsset.js
</a>
<a class="source" href="../factory/wheel.html">
./source/factory/wheel.js
</a>
<a class="source" href="anchor.html">
./source/mixin/anchor.js
</a>
<a class="source" href="asset.html">
./source/mixin/asset.js
</a>
<a class="source" href="assetAdvancedFunctionality.html">
./source/mixin/assetAdvancedFunctionality.js
</a>
<a class="source" href="assetConsumer.html">
./source/mixin/assetConsumer.js
</a>
<a class="source" href="base.html">
./source/mixin/base.js
</a>
<a class="source" href="cascade.html">
./source/mixin/cascade.js
</a>
<a class="source" href="delta.html">
./source/mixin/delta.js
</a>
<a class="source" href="displayShape.html">
./source/mixin/displayShape.js
</a>
<a class="source" href="dom.html">
./source/mixin/dom.js
</a>
<a class="source" href="entity.html">
./source/mixin/entity.js
</a>
<a class="source" href="filter.html">
./source/mixin/filter.js
</a>
<a class="source" href="mimic.html">
./source/mixin/mimic.js
</a>
<a class="source" href="path.html">
./source/mixin/path.js
</a>
<a class="source" href="pattern.html">
./source/mixin/pattern.js
</a>
<a class="source" href="pivot.html">
./source/mixin/pivot.js
</a>
<a class="source" href="position.html">
./source/mixin/position.js
</a>
<a class="source" href="shapeBasic.html">
./source/mixin/shapeBasic.js
</a>
<a class="source" href="shapeCurve.html">
./source/mixin/shapeCurve.js
</a>
<a class="source" href="shapePathCalculation.html">
./source/mixin/shapePathCalculation.js
</a>
<a class="source" href="styles.html">
./source/mixin/styles.js
</a>
<a class="source" href="tween.html">
./source/mixin/tween.js
</a>
</div>
</div>
</li>
</ul>
<ul class="sections">
<li id="section-1">
<div class="annotation">
<div class="sswrap ">
<a class="ss" href="#section-1">§</a>
</div>
<h1 id="shape-curve-mixin">Shape-curve mixin</h1>
<p>This mixin defines additional attributes and functionality used byScrawl-canvas <strong>line</strong>, <strong>quadratic</strong> and <strong>bezier</strong> path-defined entitys. </p>
<p>These entitys have additional positioning coordinates (<code>startControl</code> and <code>endControl</code> for Bezier entitys; <code>control</code> for Quadratic entitys; all three entity types use the <code>end</code> coordinate) which we use to construct and position them. Other artefacts can pivot themselves to these coordinates, and path-defined entitys can pivot the coordinates to other artefacts.</p>
</div>
</li>
<li id="section-2">
<div class="annotation">
<div class="sswrap ">
<a class="ss" href="#section-2">§</a>
</div>
<h4 id="imports">Imports</h4>
</div>
<div class="content"><div class='highlight'><pre><span class="hljs-keyword">import</span> { artefact, particle } <span class="hljs-keyword">from</span> <span class="hljs-string">'../core/library.js'</span>;
<span class="hljs-keyword">import</span> { mergeOver, isa_boolean, xt, xta, addStrings, removeItem, pushUnique, Ωempty } <span class="hljs-keyword">from</span> <span class="hljs-string">'../core/utilities.js'</span>;
<span class="hljs-keyword">import</span> { makeCoordinate } <span class="hljs-keyword">from</span> <span class="hljs-string">'../factory/coordinate.js'</span>;
<span class="hljs-keyword">const</span> <span class="hljs-title function_">capitalize</span> = (<span class="hljs-params">s</span>) => {
<span class="hljs-keyword">if</span> (<span class="hljs-keyword">typeof</span> s !== <span class="hljs-string">'string'</span>) <span class="hljs-keyword">return</span> <span class="hljs-string">''</span>;
<span class="hljs-keyword">return</span> s.<span class="hljs-title function_">charAt</span>(<span class="hljs-number">0</span>).<span class="hljs-title function_">toUpperCase</span>() + s.<span class="hljs-title function_">slice</span>(<span class="hljs-number">1</span>);
}</pre></div></div>
</li>
<li id="section-3">
<div class="annotation">
<div class="sswrap ">
<a class="ss" href="#section-3">§</a>
</div>
<h4 id="export-function">Export function</h4>
</div>
<div class="content"><div class='highlight'><pre><span class="hljs-keyword">export</span> <span class="hljs-keyword">default</span> <span class="hljs-keyword">function</span> (<span class="hljs-params">P = Ωempty</span>) {</pre></div></div>
</li>
<li id="section-4">
<div class="annotation">
<div class="sswrap ">
<a class="ss" href="#section-4">§</a>
</div>
<h4 id="shared-attributes">Shared attributes</h4>
</div>
<div class="content"><div class='highlight'><pre> <span class="hljs-keyword">let</span> defaultAttributes = {</pre></div></div>
</li>
<li id="section-5">
<div class="annotation">
<div class="sswrap ">
<a class="ss" href="#section-5">§</a>
</div>
<p>The <strong>end</strong> coordinate (‘pin’) defines where a curve terminates.</p>
<ul>
<li>Similar to the <code>start</code> coordinate, the <code>end</code> coordinate can be updated using the pseudo-attributes <strong>endX</strong> and <strong>endY</strong>.</li>
</ul>
</div>
<div class="content"><div class='highlight'><pre> <span class="hljs-attr">end</span>: <span class="hljs-literal">null</span>,</pre></div></div>
</li>
<li id="section-6">
<div class="annotation">
<div class="sswrap ">
<a class="ss" href="#section-6">§</a>
</div>
<p><strong>endPivot</strong>, <strong>endPivotCorner</strong>, <strong>addEndPivotHandle</strong>, <strong>addEndPivotOffset</strong></p>
<ul>
<li>Like the <code>start</code> coordinate, the <code>end</code> coordinate can be <strong>pivoted</strong> to another artefact. These attributes are used in the same way as the <code>pivot</code>, ‘pivotCorner’, <code>addPivotHandle</code> and <code>addPivotOffset</code> attributes.</li>
</ul>
</div>
<div class="content"><div class='highlight'><pre> <span class="hljs-attr">endPivot</span>: <span class="hljs-string">''</span>,
<span class="hljs-attr">endPivotCorner</span>: <span class="hljs-string">''</span>,
<span class="hljs-attr">addEndPivotHandle</span>: <span class="hljs-literal">false</span>,
<span class="hljs-attr">addEndPivotOffset</span>: <span class="hljs-literal">false</span>,</pre></div></div>
</li>
<li id="section-7">
<div class="annotation">
<div class="sswrap ">
<a class="ss" href="#section-7">§</a>
</div>
<p><strong>endPath</strong>, <strong>endPathPosition</strong>, <strong>addEndPathHandle</strong>, <strong>addEndPathOffset</strong></p>
<ul>
<li>Like the <code>start</code> coordinate, the <code>end</code> coordinate can be <strong>pathed</strong> to another artefact. These attributes are used in the same way as the <code>path</code>, ‘pathPosition’, <code>addPathHandle</code> and <code>addPathOffset</code> attributes.</li>
</ul>
</div>
<div class="content"><div class='highlight'><pre> <span class="hljs-attr">endPath</span>: <span class="hljs-string">''</span>,
<span class="hljs-attr">endPathPosition</span>: <span class="hljs-number">0</span>,
<span class="hljs-attr">addEndPathHandle</span>: <span class="hljs-literal">false</span>,
<span class="hljs-attr">addEndPathOffset</span>: <span class="hljs-literal">true</span>,</pre></div></div>
</li>
<li id="section-8">
<div class="annotation">
<div class="sswrap ">
<a class="ss" href="#section-8">§</a>
</div>
<p><strong>endParticle</strong> - attribute to store any particle the artefact mey be using for its position reference</p>
</div>
<div class="content"><div class='highlight'><pre> <span class="hljs-attr">endParticle</span>: <span class="hljs-string">''</span>,</pre></div></div>
</li>
<li id="section-9">
<div class="annotation">
<div class="sswrap ">
<a class="ss" href="#section-9">§</a>
</div>
<p><strong>endLockTo</strong></p>
<ul>
<li>Like the <code>start</code> coordinate, the <code>end</code> coordinate can swap between using absolute and relative positioning by setting this attribute. Accepted values are: <code>coord</code> (default, for absolute positioning), <code>pivot</code>, <code>path</code>, <code>position</code>, <code>mouse</code>.</li>
<li>The end coordinate does not support ‘mimic’ relative positioning.</li>
<li>The end lock does not support setting the <code>x</code> and <code>y</code> coordinates separately - its value is a string argument, not an <code>[x, y]</code> array!</li>
</ul>
</div>
<div class="content"><div class='highlight'><pre> <span class="hljs-attr">endLockTo</span>: <span class="hljs-string">''</span>,</pre></div></div>
</li>
<li id="section-10">
<div class="annotation">
<div class="sswrap ">
<a class="ss" href="#section-10">§</a>
</div>
<p><strong>useStartAsControlPoint</strong> - by default, updating the curve entity’s <code>start</code> coordinate will move the entire curve. In situations where we need to treat the start coordinate like a curve ‘pin’, set this attribute to <code>true</code>.</p>
</div>
<div class="content"><div class='highlight'><pre> <span class="hljs-attr">useStartAsControlPoint</span>: <span class="hljs-literal">false</span>,
};
P.<span class="hljs-property">defs</span> = <span class="hljs-title function_">mergeOver</span>(P.<span class="hljs-property">defs</span>, defaultAttributes);</pre></div></div>
</li>
<li id="section-11">
<div class="annotation">
<div class="sswrap ">
<a class="ss" href="#section-11">§</a>
</div>
<h4 id="packet-management">Packet management</h4>
</div>
<div class="content"><div class='highlight'><pre> P.<span class="hljs-property">packetExclusions</span> = <span class="hljs-title function_">pushUnique</span>(P.<span class="hljs-property">packetExclusions</span>, [<span class="hljs-string">'controlledLineOffset'</span>]);
P.<span class="hljs-property">packetExclusionsByRegex</span> = <span class="hljs-title function_">pushUnique</span>(P.<span class="hljs-property">packetExclusionsByRegex</span>, []);
P.<span class="hljs-property">packetCoordinates</span> = <span class="hljs-title function_">pushUnique</span>(P.<span class="hljs-property">packetCoordinates</span>, [<span class="hljs-string">'end'</span>]);
P.<span class="hljs-property">packetObjects</span> = <span class="hljs-title function_">pushUnique</span>(P.<span class="hljs-property">packetObjects</span>, [<span class="hljs-string">'endPivot'</span>, <span class="hljs-string">'endPath'</span>]);
P.<span class="hljs-property">packetFunctions</span> = <span class="hljs-title function_">pushUnique</span>(P.<span class="hljs-property">packetFunctions</span>, []);</pre></div></div>
</li>
<li id="section-12">
<div class="annotation">
<div class="sswrap ">
<a class="ss" href="#section-12">§</a>
</div>
<h4 id="clone-management">Clone management</h4>
<p>No additional clone functionality defined here</p>
</div>
</li>
<li id="section-13">
<div class="annotation">
<div class="sswrap ">
<a class="ss" href="#section-13">§</a>
</div>
<h4 id="kill-management">Kill management</h4>
</div>
<div class="content"><div class='highlight'><pre>P.<span class="hljs-property">factoryKill</span> = <span class="hljs-keyword">function</span> (<span class="hljs-params"></span>) {
<span class="hljs-title class_">Object</span>.<span class="hljs-title function_">entries</span>(artefact).<span class="hljs-title function_">forEach</span>(<span class="hljs-function">(<span class="hljs-params">[name, art]</span>) =></span> {
<span class="hljs-keyword">if</span> (art.<span class="hljs-property">name</span> !== <span class="hljs-variable language_">this</span>.<span class="hljs-property">name</span>) {
<span class="hljs-keyword">if</span> (art.<span class="hljs-property">startControlPivot</span> && art.<span class="hljs-property">startControlPivot</span>.<span class="hljs-property">name</span> === <span class="hljs-variable language_">this</span>.<span class="hljs-property">name</span>) art.<span class="hljs-title function_">set</span>({ <span class="hljs-attr">startControlPivot</span>: <span class="hljs-literal">false</span>});
<span class="hljs-keyword">if</span> (art.<span class="hljs-property">controlPivot</span> && art.<span class="hljs-property">controlPivot</span>.<span class="hljs-property">name</span> === <span class="hljs-variable language_">this</span>.<span class="hljs-property">name</span>) art.<span class="hljs-title function_">set</span>({ <span class="hljs-attr">controlPivot</span>: <span class="hljs-literal">false</span>});
<span class="hljs-keyword">if</span> (art.<span class="hljs-property">endControlPivot</span> && art.<span class="hljs-property">endControlPivot</span>.<span class="hljs-property">name</span> === <span class="hljs-variable language_">this</span>.<span class="hljs-property">name</span>) art.<span class="hljs-title function_">set</span>({ <span class="hljs-attr">endControlPivot</span>: <span class="hljs-literal">false</span>});
<span class="hljs-keyword">if</span> (art.<span class="hljs-property">endPivot</span> && art.<span class="hljs-property">endPivot</span>.<span class="hljs-property">name</span> === <span class="hljs-variable language_">this</span>.<span class="hljs-property">name</span>) art.<span class="hljs-title function_">set</span>({ <span class="hljs-attr">endPivot</span>: <span class="hljs-literal">false</span>});
<span class="hljs-keyword">if</span> (art.<span class="hljs-property">startControlPath</span> && art.<span class="hljs-property">startControlPath</span>.<span class="hljs-property">name</span> === <span class="hljs-variable language_">this</span>.<span class="hljs-property">name</span>) art.<span class="hljs-title function_">set</span>({ <span class="hljs-attr">startControlPath</span>: <span class="hljs-literal">false</span>});
<span class="hljs-keyword">if</span> (art.<span class="hljs-property">controlPath</span> && art.<span class="hljs-property">controlPath</span>.<span class="hljs-property">name</span> === <span class="hljs-variable language_">this</span>.<span class="hljs-property">name</span>) art.<span class="hljs-title function_">set</span>({ <span class="hljs-attr">controlPath</span>: <span class="hljs-literal">false</span>});
<span class="hljs-keyword">if</span> (art.<span class="hljs-property">endControlPath</span> && art.<span class="hljs-property">endControlPath</span>.<span class="hljs-property">name</span> === <span class="hljs-variable language_">this</span>.<span class="hljs-property">name</span>) art.<span class="hljs-title function_">set</span>({ <span class="hljs-attr">endControlPath</span>: <span class="hljs-literal">false</span>});
<span class="hljs-keyword">if</span> (art.<span class="hljs-property">endPath</span> && art.<span class="hljs-property">endPath</span>.<span class="hljs-property">name</span> === <span class="hljs-variable language_">this</span>.<span class="hljs-property">name</span>) art.<span class="hljs-title function_">set</span>({ <span class="hljs-attr">endPath</span>: <span class="hljs-literal">false</span>});
}
});
};</pre></div></div>
</li>
<li id="section-14">
<div class="annotation">
<div class="sswrap ">
<a class="ss" href="#section-14">§</a>
</div>
<h4 id="get-set-deltaset">Get, Set, deltaSet</h4>
</div>
<div class="content"><div class='highlight'><pre> <span class="hljs-keyword">let</span> G = P.<span class="hljs-property">getters</span>,
S = P.<span class="hljs-property">setters</span>,
D = P.<span class="hljs-property">deltaSetters</span>;</pre></div></div>
</li>
<li id="section-15">
<div class="annotation">
<div class="sswrap ">
<a class="ss" href="#section-15">§</a>
</div>
<p><strong>useStartAsControlPoint</strong></p>
</div>
<div class="content"><div class='highlight'><pre> S.<span class="hljs-property">useStartAsControlPoint</span> = <span class="hljs-keyword">function</span> (<span class="hljs-params">item</span>) {
<span class="hljs-variable language_">this</span>.<span class="hljs-property">useStartAsControlPoint</span> = item;
<span class="hljs-keyword">if</span> (!item) {
<span class="hljs-keyword">let</span> controlledLine = <span class="hljs-variable language_">this</span>.<span class="hljs-property">controlledLineOffset</span>;
controlledLine[<span class="hljs-number">0</span>] = <span class="hljs-number">0</span>;
controlledLine[<span class="hljs-number">1</span>] = <span class="hljs-number">0</span>;
}
<span class="hljs-variable language_">this</span>.<span class="hljs-title function_">updateDirty</span>();
};</pre></div></div>
</li>
<li id="section-16">
<div class="annotation">
<div class="sswrap ">
<a class="ss" href="#section-16">§</a>
</div>
<p><strong>endPivot</strong></p>
</div>
<div class="content"><div class='highlight'><pre> S.<span class="hljs-property">endPivot</span> = <span class="hljs-keyword">function</span> (<span class="hljs-params">item</span>) {
<span class="hljs-variable language_">this</span>.<span class="hljs-title function_">setControlHelper</span>(item, <span class="hljs-string">'endPivot'</span>, <span class="hljs-string">'end'</span>);
<span class="hljs-variable language_">this</span>.<span class="hljs-title function_">updateDirty</span>();
<span class="hljs-variable language_">this</span>.<span class="hljs-property">dirtyEnd</span> = <span class="hljs-literal">true</span>;
};</pre></div></div>
</li>
<li id="section-17">
<div class="annotation">
<div class="sswrap ">
<a class="ss" href="#section-17">§</a>
</div>
<p><strong>endParticle</strong></p>
</div>
<div class="content"><div class='highlight'><pre> S.<span class="hljs-property">endParticle</span> = <span class="hljs-keyword">function</span> (<span class="hljs-params">item</span>) {
<span class="hljs-variable language_">this</span>.<span class="hljs-title function_">setControlHelper</span>(item, <span class="hljs-string">'endParticle'</span>, <span class="hljs-string">'end'</span>);
<span class="hljs-variable language_">this</span>.<span class="hljs-title function_">updateDirty</span>();
<span class="hljs-variable language_">this</span>.<span class="hljs-property">dirtyEnd</span> = <span class="hljs-literal">true</span>;
};</pre></div></div>
</li>
<li id="section-18">
<div class="annotation">
<div class="sswrap ">
<a class="ss" href="#section-18">§</a>
</div>
<p><strong>endPath</strong></p>
</div>
<div class="content"><div class='highlight'><pre> S.<span class="hljs-property">endPath</span> = <span class="hljs-keyword">function</span> (<span class="hljs-params">item</span>) {
<span class="hljs-variable language_">this</span>.<span class="hljs-title function_">setControlHelper</span>(item, <span class="hljs-string">'endPath'</span>, <span class="hljs-string">'end'</span>);
<span class="hljs-variable language_">this</span>.<span class="hljs-title function_">updateDirty</span>();
<span class="hljs-variable language_">this</span>.<span class="hljs-property">dirtyEnd</span> = <span class="hljs-literal">true</span>;
};</pre></div></div>
</li>
<li id="section-19">
<div class="annotation">
<div class="sswrap ">
<a class="ss" href="#section-19">§</a>
</div>
<p><strong>endPathPosition</strong></p>
</div>
<div class="content"><div class='highlight'><pre> S.<span class="hljs-property">endPathPosition</span> = <span class="hljs-keyword">function</span> (<span class="hljs-params">item</span>) {
<span class="hljs-variable language_">this</span>.<span class="hljs-property">endPathPosition</span> = item;
<span class="hljs-variable language_">this</span>.<span class="hljs-property">dirtyEnd</span> = <span class="hljs-literal">true</span>;
<span class="hljs-variable language_">this</span>.<span class="hljs-property">currentEndPathData</span> = <span class="hljs-literal">false</span>;
<span class="hljs-variable language_">this</span>.<span class="hljs-property">dirtyFilterIdentifier</span> = <span class="hljs-literal">true</span>;
};
D.<span class="hljs-property">endPathPosition</span> = <span class="hljs-keyword">function</span> (<span class="hljs-params">item</span>) {
<span class="hljs-variable language_">this</span>.<span class="hljs-property">endPathPosition</span> += item;
<span class="hljs-variable language_">this</span>.<span class="hljs-property">dirtyEnd</span> = <span class="hljs-literal">true</span>;
<span class="hljs-variable language_">this</span>.<span class="hljs-property">currentEndPathData</span> = <span class="hljs-literal">false</span>;
<span class="hljs-variable language_">this</span>.<span class="hljs-property">dirtyFilterIdentifier</span> = <span class="hljs-literal">true</span>;
};</pre></div></div>
</li>
<li id="section-20">
<div class="annotation">
<div class="sswrap ">
<a class="ss" href="#section-20">§</a>
</div>
<p><strong>end</strong></p>
<ul>
<li>pseudo-attributes <strong>endX</strong>, <strong>endY</strong></li>
</ul>
</div>
<div class="content"><div class='highlight'><pre> G.<span class="hljs-property">endPositionX</span> = <span class="hljs-keyword">function</span> (<span class="hljs-params"></span>) {
<span class="hljs-keyword">return</span> <span class="hljs-variable language_">this</span>.<span class="hljs-property">currentEnd</span>[<span class="hljs-number">0</span>];
};
G.<span class="hljs-property">endPositionY</span> = <span class="hljs-keyword">function</span> (<span class="hljs-params"></span>) {
<span class="hljs-keyword">return</span> <span class="hljs-variable language_">this</span>.<span class="hljs-property">currentEnd</span>[<span class="hljs-number">1</span>];
};
G.<span class="hljs-property">endPosition</span> = <span class="hljs-keyword">function</span> (<span class="hljs-params"></span>) {
<span class="hljs-keyword">return</span> [].<span class="hljs-title function_">concat</span>(<span class="hljs-variable language_">this</span>.<span class="hljs-property">currentEnd</span>);
};
S.<span class="hljs-property">endX</span> = <span class="hljs-keyword">function</span> (<span class="hljs-params">coord</span>) {
<span class="hljs-keyword">if</span> (coord != <span class="hljs-literal">null</span>) {
<span class="hljs-variable language_">this</span>.<span class="hljs-property">end</span>[<span class="hljs-number">0</span>] = coord;
<span class="hljs-variable language_">this</span>.<span class="hljs-title function_">updateDirty</span>();
<span class="hljs-variable language_">this</span>.<span class="hljs-property">dirtyEnd</span> = <span class="hljs-literal">true</span>;
<span class="hljs-variable language_">this</span>.<span class="hljs-property">currentEndPathData</span> = <span class="hljs-literal">false</span>;
}
};
S.<span class="hljs-property">endY</span> = <span class="hljs-keyword">function</span> (<span class="hljs-params">coord</span>) {
<span class="hljs-keyword">if</span> (coord != <span class="hljs-literal">null</span>) {
<span class="hljs-variable language_">this</span>.<span class="hljs-property">end</span>[<span class="hljs-number">1</span>] = coord;
<span class="hljs-variable language_">this</span>.<span class="hljs-title function_">updateDirty</span>();
<span class="hljs-variable language_">this</span>.<span class="hljs-property">dirtyEnd</span> = <span class="hljs-literal">true</span>;
<span class="hljs-variable language_">this</span>.<span class="hljs-property">currentEndPathData</span> = <span class="hljs-literal">false</span>;
}
};
S.<span class="hljs-property">end</span> = <span class="hljs-keyword">function</span> (<span class="hljs-params">x, y</span>) {
<span class="hljs-variable language_">this</span>.<span class="hljs-title function_">setCoordinateHelper</span>(<span class="hljs-string">'end'</span>, x, y);
<span class="hljs-variable language_">this</span>.<span class="hljs-title function_">updateDirty</span>();
<span class="hljs-variable language_">this</span>.<span class="hljs-property">dirtyEnd</span> = <span class="hljs-literal">true</span>;
<span class="hljs-variable language_">this</span>.<span class="hljs-property">currentEndPathData</span> = <span class="hljs-literal">false</span>;
};
D.<span class="hljs-property">endX</span> = <span class="hljs-keyword">function</span> (<span class="hljs-params">coord</span>) {
<span class="hljs-keyword">let</span> c = <span class="hljs-variable language_">this</span>.<span class="hljs-property">end</span>;
c[<span class="hljs-number">0</span>] = <span class="hljs-title function_">addStrings</span>(c[<span class="hljs-number">0</span>], coord);
<span class="hljs-variable language_">this</span>.<span class="hljs-title function_">updateDirty</span>();
<span class="hljs-variable language_">this</span>.<span class="hljs-property">dirtyEnd</span> = <span class="hljs-literal">true</span>;
<span class="hljs-variable language_">this</span>.<span class="hljs-property">currentEndPathData</span> = <span class="hljs-literal">false</span>;
};
D.<span class="hljs-property">endY</span> = <span class="hljs-keyword">function</span> (<span class="hljs-params">coord</span>) {
<span class="hljs-keyword">let</span> c = <span class="hljs-variable language_">this</span>.<span class="hljs-property">end</span>;
c[<span class="hljs-number">1</span>] = <span class="hljs-title function_">addStrings</span>(c[<span class="hljs-number">1</span>], coord);
<span class="hljs-variable language_">this</span>.<span class="hljs-title function_">updateDirty</span>();
<span class="hljs-variable language_">this</span>.<span class="hljs-property">dirtyEnd</span> = <span class="hljs-literal">true</span>;
<span class="hljs-variable language_">this</span>.<span class="hljs-property">currentEndPathData</span> = <span class="hljs-literal">false</span>;
};
D.<span class="hljs-property">end</span> = <span class="hljs-keyword">function</span> (<span class="hljs-params">x, y</span>) {
<span class="hljs-variable language_">this</span>.<span class="hljs-title function_">setDeltaCoordinateHelper</span>(<span class="hljs-string">'end'</span>, x, y);
<span class="hljs-variable language_">this</span>.<span class="hljs-title function_">updateDirty</span>();
<span class="hljs-variable language_">this</span>.<span class="hljs-property">dirtyEnd</span> = <span class="hljs-literal">true</span>;
<span class="hljs-variable language_">this</span>.<span class="hljs-property">currentEndPathData</span> = <span class="hljs-literal">false</span>;
};</pre></div></div>
</li>
<li id="section-21">
<div class="annotation">
<div class="sswrap ">
<a class="ss" href="#section-21">§</a>
</div>
<p><strong>endLockTo</strong></p>
</div>
<div class="content"><div class='highlight'><pre> S.<span class="hljs-property">endLockTo</span> = <span class="hljs-keyword">function</span> (<span class="hljs-params">item</span>) {
<span class="hljs-variable language_">this</span>.<span class="hljs-property">endLockTo</span> = item;
<span class="hljs-variable language_">this</span>.<span class="hljs-title function_">updateDirty</span>();
<span class="hljs-variable language_">this</span>.<span class="hljs-property">dirtyEndLock</span> = <span class="hljs-literal">true</span>;
<span class="hljs-variable language_">this</span>.<span class="hljs-property">currentEndPathData</span> = <span class="hljs-literal">false</span>;
};</pre></div></div>
</li>
<li id="section-22">
<div class="annotation">
<div class="sswrap ">
<a class="ss" href="#section-22">§</a>
</div>
<h4 id="prototype-functions">Prototype functions</h4>
</div>
</li>
<li id="section-23">
<div class="annotation">
<div class="sswrap ">
<a class="ss" href="#section-23">§</a>
</div>
<p><code>curveInit</code> - internal constructor helper function</p>
</div>
<div class="content"><div class='highlight'><pre> P.<span class="hljs-property">curveInit</span> = <span class="hljs-keyword">function</span> (<span class="hljs-params">items</span>) {
<span class="hljs-variable language_">this</span>.<span class="hljs-property">end</span> = <span class="hljs-title function_">makeCoordinate</span>();
<span class="hljs-variable language_">this</span>.<span class="hljs-property">currentEnd</span> = <span class="hljs-title function_">makeCoordinate</span>();
<span class="hljs-variable language_">this</span>.<span class="hljs-property">endLockTo</span> = <span class="hljs-string">'coord'</span>;
<span class="hljs-variable language_">this</span>.<span class="hljs-property">dirtyEnd</span> = <span class="hljs-literal">true</span>;
<span class="hljs-variable language_">this</span>.<span class="hljs-property">dirtyPins</span> = [];
<span class="hljs-variable language_">this</span>.<span class="hljs-property">controlledLineOffset</span> = <span class="hljs-title function_">makeCoordinate</span>();
};</pre></div></div>
</li>
<li id="section-24">
<div class="annotation">
<div class="sswrap ">
<a class="ss" href="#section-24">§</a>
</div>
<p><code>setControlHelper</code> - internal setter helper function</p>
</div>
<div class="content"><div class='highlight'><pre> P.<span class="hljs-property">setControlHelper</span> = <span class="hljs-keyword">function</span> (<span class="hljs-params">item, attr, label</span>) {
<span class="hljs-keyword">if</span> (<span class="hljs-title function_">isa_boolean</span>(item) && !item) {
<span class="hljs-variable language_">this</span>[attr] = <span class="hljs-literal">null</span>;
<span class="hljs-keyword">if</span> (label === <span class="hljs-string">'startControl'</span>) <span class="hljs-variable language_">this</span>.<span class="hljs-property">dirtyStartControlLock</span> = <span class="hljs-literal">true</span>;
<span class="hljs-keyword">else</span> <span class="hljs-keyword">if</span> (label === <span class="hljs-string">'control'</span>) <span class="hljs-variable language_">this</span>.<span class="hljs-property">dirtyControlLock</span> = <span class="hljs-literal">true</span>;
<span class="hljs-keyword">else</span> <span class="hljs-keyword">if</span> (label === <span class="hljs-string">'endControl'</span>) <span class="hljs-variable language_">this</span>.<span class="hljs-property">dirtyEndControlLock</span> = <span class="hljs-literal">true</span>;
<span class="hljs-keyword">else</span> <span class="hljs-variable language_">this</span>.<span class="hljs-property">dirtyEndLock</span> = <span class="hljs-literal">true</span>;
}
<span class="hljs-keyword">else</span> <span class="hljs-keyword">if</span> (item) {
<span class="hljs-keyword">let</span> oldControl = <span class="hljs-variable language_">this</span>[attr],
newControl = (item.<span class="hljs-property">substring</span>) ? artefact[item] : item;
<span class="hljs-keyword">if</span> (attr.<span class="hljs-title function_">indexOf</span>(<span class="hljs-string">'Pivot'</span>) > <span class="hljs-number">0</span>) {
<span class="hljs-keyword">if</span> (new