HiNC-2025-win-desktop-Deploy/App/wwwroot/HiAPI-docsite/anatomy/geom/cylindroid-editor.html

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        <article data-uid="Anatomy-CylindroidControl">
          <h1 id="cylindroid-editor">Cylindroid Editor</h1>

<p>The Cylindroid editor edits a <a class="xref" href="../../api/Hi.Geom.Cylindroid.html">Cylindroid</a> — a solid of revolution defined by a list of
(Z, R) pairs — as a table of rows, with a minimum of two. It is reached from any Geometry slot that
admits the <code>Cylindroid</code> kind, and again from the Tool House cylindroid holder, whose Geometry node
embeds the same editor directly.</p>
<h2 id="layout">Layout</h2>
<ul>
<li><strong>Z-R pairs</strong> — a header row carrying the section label and an <strong>Add</strong> button. Add appends a row
ten millimetres above the last one, at the same radius.</li>
<li><strong>The table</strong> — one row per pair, columns <code>#</code>, <code>Z (mm)</code> and <code>R (mm)</code>. Each Z and R cell is an
inline text field parsed as a number; there is no spinner. A per-row remove button sits at the end
of each row, disabled once only two pairs remain.</li>
<li><strong>The caption</strong> — a one-line statement of the type: a solid of revolution defined by (Z, R) pairs,
minimum two.</li>
</ul>
<h2 id="behavior">Behavior</h2>
<ul>
<li><strong>A cell commits on blur or Enter.</strong> An empty or non-finite entry is dropped rather than written,
and a negative radius is clamped to zero — on the client and again on the server.</li>
<li><strong>The floor is two pairs, and both ends enforce it.</strong> The remove button is disabled at two and
the controller refuses the call below two.</li>
<li><strong>Creating one seeds three pairs.</strong> The create endpoint starts a new cylindroid at (0, 20),
(30, 20) and (60, 10) rather than empty.</li>
<li><strong>Four endpoints ship without a caller.</strong> The controller exposes <code>GetPairCount</code>, <code>GetPairAt</code>,
<code>UpdatePairAt</code> and <code>SortByZ</code>; the shipped SPA uses none of them, committing the whole list instead.</li>
</ul>
<h2 id="tessellation-resolution-is-not-a-property-of-the-shape">Tessellation Resolution Is Not a Property of the Shape</h2>
<p>There is no longitude count, and no per-instance resolution, on a cylindroid. The STL longitude
number is derived internally at generation time from a resolution the caller supplies; the type
carries only a static default.</p>
<p>Where resolution <em>is</em> exposed, it belongs to the holder rather than to the shape: the Tool House
cylindroid holder carries a <strong>Resolution</strong> tree node beside its Geometry one, offering a linear
resolution in millimetres and an angle resolution in degrees, described in the app as the tessellation resolution used for display and collision meshing.</p>
<h2 id="source-code-path">Source Code Path</h2>
<p>See <a class="xref" href="../index.html">HiNC App Anatomy</a> for git repository links.</p>
<p>HiNC-2025-webservice (Quasar CLI SPA):</p>
<ul>
<li><code>wwwroot-src/src/components/geom/CylindroidEditor.vue</code> — the editor: the header row and Add
button, the Z / R table with its per-cell commit, and the per-row remove and its two-pair floor.
Edits by IndexService key and emits <code>changed</code> so the owner can resync.</li>
<li><code>wwwroot-src/src/components/geom/geometryEditors.ts</code> — maps the <code>Cylindroid</code> kind to this editor.</li>
<li><code>wwwroot-src/src/components/geom/GeometryEditor.vue</code> — the kind picker that creates a Cylindroid
and embeds this editor beneath itself.</li>
<li><code>wwwroot-src/src/components/controlTree/itemTypes.ts</code> — registers <code>Cylindroid</code> against the
sole-editor panel and lists it among the kinds a container may hold.</li>
<li><code>wwwroot-src/src/components/controlTree/SoleEditorPanel.vue</code> — the kind node's panel.</li>
<li><code>wwwroot-src/src/components/controlTree/toolhouse/HolderSectionPanel.vue</code> — the second host: it
embeds this editor on the holder's cylindroid key for the Geometry node, and renders the linear
and angle resolution fields for the sibling Resolution node.</li>
<li><code>wwwroot-src/src/components/controlTree/toolHouseItemTypes.ts</code> — grows those two holder children,
and only for a cylindroid holder.</li>
<li><code>wwwroot-src/src/api/geometry.ts</code> — <code>getCylindroid</code>, <code>updateCylindroidPairs</code>, <code>addCylindroidPair</code>,
<code>removeCylindroidPairAt</code> and the create entry.</li>
<li><code>wwwroot-src/src/api/cylindroidHolder.ts</code> — the holder side: the cylindroid key it exposes, the
geometry update, and the resolution setter.</li>
<li><code>wwwroot-src/src/i18n/en/geom.ts</code> — the <code>cylindroid.*</code> strings, and
<code>wwwroot-src/src/i18n/en/toolhouse.ts</code> — the Resolution node's own labels and hint.</li>
<li><code>Geom/CylindroidController.cs</code> — REST endpoints at <code>/api/Cylindroid/*</code>: <code>New</code>, <code>Get</code>,
<code>GetPairCount</code>, <code>GetPairAt</code>, <code>UpdatePairAt</code>, <code>UpdateAllPairs</code>, <code>AddPair</code>, <code>RemovePairAt</code> and
<code>SortByZ</code>.</li>
<li><code>Mech/CylindroidHolderController.cs</code> — the holder surface at <code>/api/CylindroidHolder/*</code> behind the
Tool House host.</li>
<li><code>Common/IndexService.cs</code> — the keyed object store every cylindroid key resolves against.</li>
</ul>
<h2 id="see-also">See Also</h2>
<ul>
<li><a href="geometry-editor.html">Geometry Editor</a> — the switchboard that offers this kind and
hosts this editor</li>
<li><a class="xref" href="../tool-house/holder/cylindroid-holder-panel.html">Cylindroid Holder Panel</a> — the second host, and the surface
that owns the tessellation resolution</li>
</ul>

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