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<h1 id="quadratic-factory">Quadratic factory</h1>
<p>A factory for generating quadratic curve shape-based entitys</p>
<p>Path-defined entitys represent a diverse range of shapes rendered onto a DOM <canvas> element using the Canvas API’s <a href="https://developer.mozilla.org/en-US/docs/Web/API/Path2D">Path2D interface</a>. They use the <a href="../mixin/shapeBasic.html">shapeBasic</a> and <a href="../mixin/shapePathCalculation.html">shapePathCalculation</a> (some also use <a href="../mixin/shapeCurve.html">shapeCurve</a>) mixins to define much of their functionality.</p>
<p>All path-defined entitys can be positioned, cloned, filtered etc:</p>
<ul>
<li>Positioning functionality for the entity is supplied by the <strong>position</strong> mixin, while rendering functionality comes from the <strong>entity</strong> mixin. </li>
<li>Dimensions, however, have little meaning for path-defined entitys - their width and height are determined by their SVG path data Strings; use <code>scale</code> instead.</li>
<li>Path-defined entitys can use CSS color Strings for their fillStyle and strokeStyle values, alongside <strong>Gradient</strong>, <strong>RadialGradient</strong>, <strong>Color</strong> and <strong>Pattern</strong> objects. </li>
<li>They will also accept <strong>Filter</strong> objects.</li>
<li>They can use <strong>Anchor</strong> objects for user navigation. </li>
<li>They can be rendered to the canvas by including them in a <strong>Cell</strong> object’s <strong>Group</strong>. </li>
<li>They can be <strong>animated</strong> directly, or using delta animation, or act as the target for <strong>Tween</strong> animations.</li>
<li>Path-defined entitys can be cloned, and killed.</li>
</ul>
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<h4 id="using-path-defined-entitys-as-scrawl-canvas-paths">Using path-defined entitys as Scrawl-canvas paths</h4>
<p>A path is a track - straight, or curved, or as complex as required - placed across a container which artefacts can use as a source of their positioning data. We can animate an artifact to move along the path:</p>
<ul>
<li>To enable a path-defined entity to be used as a path by other artefacts, set its <code>useAsPath</code> flag to <code>true</code>.</li>
<li>The artefact can then set its <code>path</code> attribute to the path-defined entity’s name-String (or the entity itself), and set its <code>lockTo</code> Array values to <code>"path"</code>.</li>
<li>We position the artefact by setting its <code>pathPosition</code> attribute to a float Number value between <code>0.0 - 1.0</code>, with <code>0</code> being the start of the path, and <code>1</code> being its end.</li>
<li>Path-defined entitys can use other path-defined entitys as a path.</li>
<li>Phrase entitys can use a path to position their text block; they can also use a path to position each letter individually along the path.</li>
<li>Artefacts (and letters) can be rotated so that they match the rotation at that point along the path - <em><strong>tangential rotation</strong></em> by setting their <code>addPathRotation</code> flag to <code>true</code>.</li>
<li>Animate an artefact along the path by either using the artefact’s <code>delta</code> object, or triggering a Tween to perform the movement.</li>
</ul>
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<h4 id="demos">Demos:</h4>
<ul>
<li><a href="../../demo/canvas-011.html">Canvas-011</a> - Shape entity (make, clone, method); drag and drop shape entitys</li>
<li><a href="../../demo/canvas-012.html">Canvas-012</a> - Shape entity position; shape entity as a path for other artefacts to follow</li>
<li><a href="../../demo/canvas-013.html">Canvas-013</a> - Path-defined entitys: oval, rectangle, line, quadratic, bezier, tetragon, polygon, star, spiral</li>
<li><a href="../../demo/canvas-014.html">Canvas-014</a> - Line, quadratic and bezier entitys - control lock alternatives</li>
<li><a href="../../demo/canvas-018.html">Canvas-018</a> - Phrase entity - text along a path</li>
<li><a href="../../demo/canvas-024.html">Canvas-024</a> - Loom entity functionality</li>
<li><a href="../../demo/canvas-030.html">Canvas-030</a> - Polyline entity functionality</li>
<li><a href="../../demo/canvas-038.html">Canvas-038</a> - Responsive Shape-based entitys</li>
<li><a href="../../demo/dom-015.html">DOM-015</a> - Use stacked DOM artefact corners as pivot points</li>
<li><a href="../../demo/packets-002.html">Packets-002</a> - Scrawl-canvas packets - save and load a range of different entitys</li>
</ul>
</div>
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<h4 id="imports">Imports</h4>
</div>
<div class="content"><div class='highlight'><pre><span class="hljs-keyword">import</span> { constructors, artefact } <span class="hljs-keyword">from</span> <span class="hljs-string">'../core/library.js'</span>;
<span class="hljs-keyword">import</span> { mergeOver, addStrings, 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">'./coordinate.js'</span>;
<span class="hljs-keyword">import</span> baseMix <span class="hljs-keyword">from</span> <span class="hljs-string">'../mixin/base.js'</span>;
<span class="hljs-keyword">import</span> shapeMix <span class="hljs-keyword">from</span> <span class="hljs-string">'../mixin/shapeBasic.js'</span>;
<span class="hljs-keyword">import</span> curveMix <span class="hljs-keyword">from</span> <span class="hljs-string">'../mixin/shapeCurve.js'</span>;</pre></div></div>
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<h4 id="quadratic-constructor">Quadratic constructor</h4>
</div>
<div class="content"><div class='highlight'><pre><span class="hljs-keyword">const</span> <span class="hljs-title class_">Quadratic</span> = <span class="hljs-keyword">function</span> (<span class="hljs-params">items = Ωempty</span>) {
<span class="hljs-variable language_">this</span>.<span class="hljs-property">control</span> = <span class="hljs-title function_">makeCoordinate</span>();
<span class="hljs-variable language_">this</span>.<span class="hljs-property">currentControl</span> = <span class="hljs-title function_">makeCoordinate</span>();
<span class="hljs-variable language_">this</span>.<span class="hljs-property">controlLockTo</span> = <span class="hljs-string">'coord'</span>;
<span class="hljs-variable language_">this</span>.<span class="hljs-title function_">curveInit</span>(items);
<span class="hljs-variable language_">this</span>.<span class="hljs-title function_">shapeInit</span>(items);
<span class="hljs-variable language_">this</span>.<span class="hljs-property">dirtyControl</span> = <span class="hljs-literal">true</span>;
<span class="hljs-keyword">return</span> <span class="hljs-variable language_">this</span>;
};</pre></div></div>
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<h4 id="quadratic-prototype">Quadratic prototype</h4>
</div>
<div class="content"><div class='highlight'><pre><span class="hljs-keyword">let</span> P = <span class="hljs-title class_">Quadratic</span>.<span class="hljs-property"><span class="hljs-keyword">prototype</span></span> = <span class="hljs-title class_">Object</span>.<span class="hljs-title function_">create</span>(<span class="hljs-title class_">Object</span>.<span class="hljs-property"><span class="hljs-keyword">prototype</span></span>);
P.<span class="hljs-property">type</span> = <span class="hljs-string">'Quadratic'</span>;
P.<span class="hljs-property">lib</span> = <span class="hljs-string">'entity'</span>;
P.<span class="hljs-property">isArtefact</span> = <span class="hljs-literal">true</span>;
P.<span class="hljs-property">isAsset</span> = <span class="hljs-literal">false</span>;</pre></div></div>
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<h4 id="mixins">Mixins</h4>
<ul>
<li><a href="../mixin/base.html">base</a></li>
<li><a href="../mixin/shapeBasic.html">shapeBasic</a></li>
<li><a href="../mixin/shapeCurve.html">shapeCurve</a></li>
</ul>
</div>
<div class="content"><div class='highlight'><pre>P = <span class="hljs-title function_">baseMix</span>(P);
P = <span class="hljs-title function_">shapeMix</span>(P);
P = <span class="hljs-title function_">curveMix</span>(P);</pre></div></div>
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<h4 id="quadratic-attributes">Quadratic attributes</h4>
<ul>
<li>Attributes defined in the <a href="../mixin/base.html">base mixin</a>: <strong>name</strong>.</li>
<li>Attributes defined in the <a href="../mixin/position.html">position mixin</a>: <strong>group, visibility, order, calculateOrder, stampOrder, start, <em>startX</em>, <em>startY</em>, handle, <em>handleX</em>, <em>handleY</em>, offset, <em>offsetX</em>, <em>offsetY</em>, dimensions, <em>width</em>, <em>height</em>, pivoted, mimicked, lockTo, <em>lockXTo</em>, <em>lockYTo</em>, scale, roll, noUserInteraction, noPositionDependencies, noCanvasEngineUpdates, noFilters, noPathUpdates, purge, bringToFrontOnDrag</strong>.</li>
<li>Attributes defined in the <a href="../mixin/delta.html">delta mixin</a>: <strong>delta, noDeltaUpdates</strong>.</li>
<li>Attributes defined in the <a href="../mixin/pivot.html">pivot mixin</a>: <strong>pivot, pivotCorner, addPivotHandle, addPivotOffset, addPivotRotation</strong>.</li>
<li>Attributes defined in the <a href="../mixin/mimic.html">mimic mixin</a>: <strong>mimic, useMimicDimensions, useMimicScale, useMimicStart, useMimicHandle, useMimicOffset, useMimicRotation, useMimicFlip, addOwnDimensionsToMimic, addOwnScaleToMimic, addOwnStartToMimic, addOwnHandleToMimic, addOwnOffsetToMimic, addOwnRotationToMimic</strong>.</li>
<li>Attributes defined in the <a href="../mixin/path.html">path mixin</a>: <strong>path, pathPosition, addPathHandle, addPathOffset, addPathRotation, constantPathSpeed</strong>.</li>
<li>Attributes defined in the <a href="../mixin/entity.html">entity mixin</a>: <strong>method, pathObject, winding, flipReverse, flipUpend, scaleOutline, lockFillStyleToEntity, lockStrokeStyleToEntity, onEnter, onLeave, onDown, onUp, <em>fillStyle, strokeStyle, globalAlpha, globalCompositeOperation, lineWidth, lineCap, lineJoin, lineDash, lineDashOffset, miterLimit, shadowOffsetX, shadowOffsetY, shadowBlur, shadowColor, filter</em></strong>.</li>
<li>Attributes defined in the <a href="../mixin/anchor.html">anchor mixin</a>: <strong>anchor</strong>.</li>
<li>Attributes defined in the <a href="../mixin/filter.html">filter mixin</a>: <strong>filters, isStencil</strong>.</li>
<li>Attributes defined in the <a href="../mixin/shapeBasic.html">shapeBasic mixin</a>: <strong>species, useAsPath, precision, pathDefinition, showBoundingBox, boundingBoxColor, minimumBoundingBoxDimensions, constantPathSpeed</strong>.</li>
<li>Attributes defined in the <a href="../mixin/shapeCurve.html">shapeCurve mixin</a>: <strong>end, endPivot, endPivotCorner, addEndPivotHandle, addEndPivotOffset, endPath, endPathPosition, addEndPathHandle, addEndPathOffset, endLockTo, useStartAsControlPoint</strong>.</li>
</ul>
</div>
<div class="content"><div class='highlight'><pre><span class="hljs-keyword">let</span> defaultAttributes = {</pre></div></div>
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<p>The <strong>control</strong> coordinate (‘pin’) defines the quadratic curve’s control point.</p>
<ul>
<li>Similar to the <code>start</code> coordinate, the <code>control</code> coordinate can be updated using the pseudo-attributes <strong>controlX</strong> and <strong>controlY</strong>.</li>
</ul>
</div>
<div class="content"><div class='highlight'><pre> <span class="hljs-attr">control</span>: <span class="hljs-literal">null</span>,</pre></div></div>
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<p><strong>controlPivot</strong>, <strong>controlPivotCorner</strong>, <strong>addControlPivotHandle</strong>, <strong>addControlPivotOffset</strong></p>
<ul>
<li>Like the <code>start</code> coordinate, the <code>control</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">controlPivot</span>: <span class="hljs-string">''</span>,
<span class="hljs-attr">controlPivotCorner</span>: <span class="hljs-string">''</span>,
<span class="hljs-attr">addControlPivotHandle</span>: <span class="hljs-literal">false</span>,
<span class="hljs-attr">addControlPivotOffset</span>: <span class="hljs-literal">false</span>,</pre></div></div>
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<p><strong>controlPath</strong>, <strong>controlPathPosition</strong>, <strong>addControlPathHandle</strong>, <strong>addControlPathOffset</strong></p>
<ul>
<li>Like the <code>start</code> coordinate, the <code>control</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">controlPath</span>: <span class="hljs-string">''</span>,
<span class="hljs-attr">controlPathPosition</span>: <span class="hljs-number">0</span>,
<span class="hljs-attr">addControlPathHandle</span>: <span class="hljs-literal">false</span>,
<span class="hljs-attr">addControlPathOffset</span>: <span class="hljs-literal">true</span>,</pre></div></div>
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<p><strong>controlParticle</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">controlParticle</span>: <span class="hljs-string">''</span>,</pre></div></div>
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<li id="section-13">
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<p><strong>controlLockTo</strong></p>
<ul>
<li>Like the <code>start</code> coordinate, the <code>control</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>mouse</code>.</li>
<li>The control coordinate does not support ‘mimic’ relative positioning.</li>
<li>The control 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">controlLockTo</span>: <span class="hljs-string">''</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>
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<h4 id="packet-management">Packet management</h4>
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<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>, []);
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">'control'</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">'controlPivot'</span>, <span class="hljs-string">'controlPath'</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>
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<h4 id="clone-management">Clone management</h4>
<p>No additional clone functionality required</p>
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<h4 id="kill-management">Kill management</h4>
<p>No additional kill functionality required</p>
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<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>
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<p><strong>controlPivot</strong></p>
</div>
<div class="content"><div class='highlight'><pre>S.<span class="hljs-property">controlPivot</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">'controlPivot'</span>, <span class="hljs-string">'control'</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">dirtyControl</span> = <span class="hljs-literal">true</span>;
};</pre></div></div>
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<p><strong>controlParticle</strong></p>
</div>
<div class="content"><div class='highlight'><pre>S.<span class="hljs-property">controlParticle</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">'controlParticle'</span>, <span class="hljs-string">'control'</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">dirtyControl</span> = <span class="hljs-literal">true</span>;
};</pre></div></div>
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<p><strong>controlPath</strong></p>
</div>
<div class="content"><div class='highlight'><pre>S.<span class="hljs-property">controlPath</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">'controlPath'</span>, <span class="hljs-string">'control'</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">dirtyControl</span> = <span class="hljs-literal">true</span>;
<span class="hljs-variable language_">this</span>.<span class="hljs-property">currentControlPathData</span> = <span class="hljs-literal">false</span>;
};</pre></div></div>
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<p><strong>controlPathPosition</strong></p>
</div>
<div class="content"><div class='highlight'><pre>S.<span class="hljs-property">controlPathPosition</span> = <span class="hljs-keyword">function</span> (<span class="hljs-params">item</span>) {
<span class="hljs-variable language_">this</span>.<span class="hljs-property">controlPathPosition</span> = item;
<span class="hljs-variable language_">this</span>.<span class="hljs-property">dirtyControl</span> = <span class="hljs-literal">true</span>;
<span class="hljs-variable language_">this</span>.<span class="hljs-property">currentControlPathData</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">controlPathPosition</span> = <span class="hljs-keyword">function</span> (<span class="hljs-params">item</span>) {
<span class="hljs-variable language_">this</span>.<span class="hljs-property">controlPathPosition</span> += item;
<span class="hljs-variable language_">this</span>.<span class="hljs-property">dirtyControl</span> = <span class="hljs-literal">true</span>;
<span class="hljs-variable language_">this</span>.<span class="hljs-property">currentControlPathData</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>
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<p><strong>control</strong></p>
<ul>
<li>pseudo-attributes <strong>controlX</strong>, <strong>controlY</strong></li>
</ul>
</div>
<div class="content"><div class='highlight'><pre>G.<span class="hljs-property">controlPositionX</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">currentControl</span>[<span class="hljs-number">0</span>];
};
G.<span class="hljs-property">controlPositionY</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">currentControl</span>[<span class="hljs-number">1</span>];
};
G.<span class="hljs-property">controlPosition</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">currentControl</span>);
};
S.<span class="hljs-property">controlX</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">control</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">dirtyControl</span> = <span class="hljs-literal">true</span>;
<span class="hljs-variable language_">this</span>.<span class="hljs-property">currentControlPathData</span> = <span class="hljs-literal">false</span>;
}
};
S.<span class="hljs-property">controlY</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">control</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">dirtyControl</span> = <span class="hljs-literal">true</span>;
<span class="hljs-variable language_">this</span>.<span class="hljs-property">currentControlPathData</span> = <span class="hljs-literal">false</span>;
}
};
S.<span class="hljs-property">control</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">'control'</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">dirtyControl</span> = <span class="hljs-literal">true</span>;
<span class="hljs-variable language_">this</span>.<span class="hljs-property">currentControlPathData</span> = <span class="hljs-literal">false</span>;
};
D.<span class="hljs-property">controlX</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">control</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">dirtyControl</span> = <span class="hljs-literal">true</span>;
<span class="hljs-variable language_">this</span>.<span class="hljs-property">currentControlPathData</span> = <span class="hljs-literal">false</span>;
};
D.<span class="hljs-property">controlY</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">control</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">dirtyControl</span> = <span class="hljs-literal">true</span>;
<span class="hljs-variable language_">this</span>.<span class="hljs-property">currentControlPathData</span> = <span class="hljs-literal">false</span>;
};
D.<span class="hljs-property">control</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">'control'</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">dirtyControl</span> = <span class="hljs-literal">true</span>;
<span class="hljs-variable language_">this</span>.<span class="hljs-property">currentControlPathData</span> = <span class="hljs-literal">false</span>;
};</pre></div></div>
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<p><strong>controlLockTo</strong></p>
</div>
<div class="content"><div class='highlight'><pre>S.<span class="hljs-property">controlLockTo</span> = <span class="hljs-keyword">function</span> (<span class="hljs-params">item</span>) {
<span class="hljs-variable language_">this</span>.<span class="hljs-property">controlLockTo</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">dirtyControlLock</span> = <span class="hljs-literal">true</span>;
<span class="hljs-variable language_">this</span>.<span class="hljs-property">currentControlPathData</span> = <span class="hljs-literal">false</span>;
};</pre></div></div>
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<h4 id="prototype-functions">Prototype functions</h4>
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<p><code>cleanSpecies</code> - internal helper function - called by <code>prepareStamp</code></p>
</div>
<div class="content"><div class='highlight'><pre>P.<span class="hljs-property">cleanSpecies</span> = <span class="hljs-keyword">function</span> (<span class="hljs-params"></span>) {
<span class="hljs-variable language_">this</span>.<span class="hljs-property">dirtySpecies</span> = <span class="hljs-literal">false</span>;
<span class="hljs-keyword">let</span> p = <span class="hljs-string">'M0,0'</span>;
p = <span class="hljs-variable language_">this</span>.<span