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docs: generated API documentation (483 pages)
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&#160;<span id="projectnumber">3.1.0</span>
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<a href="#nested-classes">类</a> &#124;
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<a href="#typedef-members">类型定义</a> &#124;
<a href="#enum-members">枚举</a> &#124;
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<div class="title">sdf_tree.h 文件参考<div class="ingroups"><a class="el" href="group__sdf.html">SDF 模块 (vde::sdf)</a></div></div> </div>
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<p>SDF 表达式树结构
<a href="#details">更多...</a></p>
<div class="textblock"><code>#include &quot;<a class="el" href="sdf__primitives_8h_source.html">vde/sdf/sdf_primitives.h</a>&quot;</code><br />
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sdf_tree.h 的引用(Include)关系图:</div>
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<p><a href="sdf__tree_8h_source.html">浏览源代码.</a></p>
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类</h2></td></tr>
<tr class="memitem:"><td class="memItemLeft" align="right" valign="top">struct &#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="structvde_1_1sdf_1_1SdfParams.html">vde::sdf::SdfParams</a></td></tr>
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枚举</h2></td></tr>
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, <a class="el" href="namespacevde_1_1sdf.html#a9ba4992806c82a0737f72c23bd0b76a1a75005e4bb7beb34ecfe5067ccba5a958">vde::sdf::SmoothDifference</a>
, <a class="el" href="namespacevde_1_1sdf.html#a9ba4992806c82a0737f72c23bd0b76a1ab7f41fc1412ad2ee75e9b2635d3b9d5c">vde::sdf::Round</a>
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, <a class="el" href="namespacevde_1_1sdf.html#a9ba4992806c82a0737f72c23bd0b76a1a7020426cfb0a204051be4b3053d2acc8">vde::sdf::Repeat</a>
, <a class="el" href="namespacevde_1_1sdf.html#a9ba4992806c82a0737f72c23bd0b76a1a8ee36c9c42f877feee31aaf4b0883546">vde::sdf::MirrorX</a>
, <a class="el" href="namespacevde_1_1sdf.html#a9ba4992806c82a0737f72c23bd0b76a1ac81ac223c7946d2dd3872e591c6988f5">vde::sdf::MirrorY</a>
, <br />
&#160;&#160;<a class="el" href="namespacevde_1_1sdf.html#a9ba4992806c82a0737f72c23bd0b76a1a6824e17f0c6d79093e95c24c80af97f6">vde::sdf::MirrorZ</a>
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&#160;&#160;<a class="el" href="namespacevde_1_1sdf.html#a9ba4992806c82a0737f72c23bd0b76a1a508f64e1623cf34c9040a219077301ba">vde::sdf::Displace</a>
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<tr class="memdesc:a9ba4992806c82a0737f72c23bd0b76a1"><td class="mdescLeft">&#160;</td><td class="mdescRight">CSG 树的所有节点类型 <a href="namespacevde_1_1sdf.html#a9ba4992806c82a0737f72c23bd0b76a1">更多...</a><br /></td></tr>
<tr class="separator:a9ba4992806c82a0737f72c23bd0b76a1"><td class="memSeparator" colspan="2">&#160;</td></tr>
</table><table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="func-members"></a>
函数</h2></td></tr>
<tr class="memitem:a30bd88dc6f714962cb14ec76a5ca5365"><td class="memItemLeft" align="right" valign="top">double&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="namespacevde_1_1sdf.html#a30bd88dc6f714962cb14ec76a5ca5365">vde::sdf::evaluate</a> (const SdfNodePtr &amp;root, const Point3D &amp;p)</td></tr>
<tr class="memdesc:a30bd88dc6f714962cb14ec76a5ca5365"><td class="mdescLeft">&#160;</td><td class="mdescRight">在空间点 p 处求值 SDF 树 <a href="namespacevde_1_1sdf.html#a30bd88dc6f714962cb14ec76a5ca5365">更多...</a><br /></td></tr>
<tr class="separator:a30bd88dc6f714962cb14ec76a5ca5365"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ae6bcbe30bdd5180fd6cb7a6818969c4d"><td class="memItemLeft" align="right" valign="top">Point3D&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="namespacevde_1_1sdf.html#ae6bcbe30bdd5180fd6cb7a6818969c4d">vde::sdf::estimate_bounds</a> (const SdfNodePtr &amp;root, double margin=1.0)</td></tr>
<tr class="memdesc:ae6bcbe30bdd5180fd6cb7a6818969c4d"><td class="mdescLeft">&#160;</td><td class="mdescRight">估算 SDF 树的包围半尺寸 <a href="namespacevde_1_1sdf.html#ae6bcbe30bdd5180fd6cb7a6818969c4d">更多...</a><br /></td></tr>
<tr class="separator:ae6bcbe30bdd5180fd6cb7a6818969c4d"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a06d4ae274cd858e331cf56f497a545bb"><td class="memItemLeft" align="right" valign="top">SdfBBox&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="namespacevde_1_1sdf.html#a06d4ae274cd858e331cf56f497a545bb">vde::sdf::estimate_bbox</a> (const SdfNodePtr &amp;root, double margin=1.0)</td></tr>
<tr class="memdesc:a06d4ae274cd858e331cf56f497a545bb"><td class="mdescLeft">&#160;</td><td class="mdescRight">估算 SDF 树的完整轴对齐包围盒 <a href="namespacevde_1_1sdf.html#a06d4ae274cd858e331cf56f497a545bb">更多...</a><br /></td></tr>
<tr class="separator:a06d4ae274cd858e331cf56f497a545bb"><td class="memSeparator" colspan="2">&#160;</td></tr>
</table>
<a name="details" id="details"></a><h2 class="groupheader">详细描述</h2>
<div class="textblock"><p>SDF 表达式树结构 </p>
<p>将 SDF 原语和 CSG 操作以树形数据结构表示，支持树遍历、求值和包围盒估算。</p>
<h2><a class="anchor" id="autotoc_md35"></a>
架构层级</h2>
<div class="fragment"><div class="line">SdfNode (树节点) — 单节点，含操作类型+参数+子节点</div>
<div class="line"> ├─ <span class="keyword">enum</span> <a class="code" href="namespacevde_1_1sdf.html#a9ba4992806c82a0737f72c23bd0b76a1">SdfOp</a> — 操作枚举（图元/CSG/修饰/变形）</div>
<div class="line"> ├─ <span class="keyword">struct </span>SdfParams — 参数联合体</div>
<div class="line"> ├─ 静态工厂方法 — 创建各类型节点</div>
<div class="line"> └─ visit() — 前序遍历</div>
<div class="line"> </div>
<div class="line"><a class="code" href="namespacevde_1_1sdf.html#a30bd88dc6f714962cb14ec76a5ca5365">evaluate</a>() — 递归求值</div>
<div class="line"><a class="code" href="namespacevde_1_1sdf.html#ae6bcbe30bdd5180fd6cb7a6818969c4d">estimate_bounds</a>() / <a class="code" href="namespacevde_1_1sdf.html#a06d4ae274cd858e331cf56f497a545bb">estimate_bbox</a>() — 包围盒估算</div>
<div class="ttc" id="anamespacevde_1_1sdf_html_a06d4ae274cd858e331cf56f497a545bb"><div class="ttname"><a href="namespacevde_1_1sdf.html#a06d4ae274cd858e331cf56f497a545bb">vde::sdf::estimate_bbox</a></div><div class="ttdeci">SdfBBox estimate_bbox(const SdfNodePtr &amp;root, double margin=1.0)</div><div class="ttdoc">估算 SDF 树的完整轴对齐包围盒</div></div>
<div class="ttc" id="anamespacevde_1_1sdf_html_a30bd88dc6f714962cb14ec76a5ca5365"><div class="ttname"><a href="namespacevde_1_1sdf.html#a30bd88dc6f714962cb14ec76a5ca5365">vde::sdf::evaluate</a></div><div class="ttdeci">double evaluate(const SdfNodePtr &amp;root, const Point3D &amp;p)</div><div class="ttdoc">在空间点 p 处求值 SDF 树</div></div>
<div class="ttc" id="anamespacevde_1_1sdf_html_a9ba4992806c82a0737f72c23bd0b76a1"><div class="ttname"><a href="namespacevde_1_1sdf.html#a9ba4992806c82a0737f72c23bd0b76a1">vde::sdf::SdfOp</a></div><div class="ttdeci">SdfOp</div><div class="ttdoc">CSG 树的所有节点类型</div><div class="ttdef"><b>Definition:</b> <a href="sdf__tree_8h_source.html#l00060">sdf_tree.h:60</a></div></div>
<div class="ttc" id="anamespacevde_1_1sdf_html_ae6bcbe30bdd5180fd6cb7a6818969c4d"><div class="ttname"><a href="namespacevde_1_1sdf.html#ae6bcbe30bdd5180fd6cb7a6818969c4d">vde::sdf::estimate_bounds</a></div><div class="ttdeci">Point3D estimate_bounds(const SdfNodePtr &amp;root, double margin=1.0)</div><div class="ttdoc">估算 SDF 树的包围半尺寸</div></div>
</div><!-- fragment --><h2><a class="anchor" id="autotoc_md36"></a>
使用模式</h2>
<p>通过静态工厂方法构建节点树，然后调用 <a class="el" href="namespacevde_1_1sdf.html#a30bd88dc6f714962cb14ec76a5ca5365" title="在空间点 p 处求值 SDF 树">evaluate()</a> 进行求值：</p>
<div class="fragment"><div class="line"><span class="keyword">auto</span> root = <a class="code" href="namespacevde_1_1sdf.html#a93c4506583db122c5b657d39d6d2bb62">SdfNode::op_union</a>(</div>
<div class="line"> <a class="code" href="namespacevde_1_1sdf.html#ab544a3ebc4c0844b322b73bbbe4efb3f">SdfNode::sphere</a>(1.0),</div>
<div class="line"> <a class="code" href="namespacevde_1_1sdf.html#a380ebfe1b3b65d5ecc4efcb946b21834">SdfNode::box</a>(<a class="code" href="namespacevde_1_1core.html#ac6aed70c4b90d13f10217267cd7a1952">Point3D</a>(0.5, 0.5, 0.5))</div>
<div class="line">);</div>
<div class="line"><span class="keywordtype">double</span> d = <a class="code" href="namespacevde_1_1sdf.html#a30bd88dc6f714962cb14ec76a5ca5365">evaluate</a>(root, <a class="code" href="namespacevde_1_1core.html#ac6aed70c4b90d13f10217267cd7a1952">Point3D</a>(1.0, 0.0, 0.0));</div>
<div class="ttc" id="anamespacevde_1_1core_html_ac6aed70c4b90d13f10217267cd7a1952"><div class="ttname"><a href="namespacevde_1_1core.html#ac6aed70c4b90d13f10217267cd7a1952">vde::core::Point3D</a></div><div class="ttdeci">foundation::Point3D Point3D</div><div class="ttdoc">双精度三维点（重新导出）</div><div class="ttdef"><b>Definition:</b> <a href="point_8h_source.html#l00031">point.h:31</a></div></div>
<div class="ttc" id="anamespacevde_1_1sdf_html_a380ebfe1b3b65d5ecc4efcb946b21834"><div class="ttname"><a href="namespacevde_1_1sdf.html#a380ebfe1b3b65d5ecc4efcb946b21834">vde::sdf::box</a></div><div class="ttdeci">double box(const Point3D &amp;p, const Point3D &amp;half_extents)</div><div class="ttdoc">轴对齐立方体的 SDF</div><div class="ttdef"><b>Definition:</b> <a href="sdf__primitives_8h_source.html#l00096">sdf_primitives.h:96</a></div></div>
<div class="ttc" id="anamespacevde_1_1sdf_html_a93c4506583db122c5b657d39d6d2bb62"><div class="ttname"><a href="namespacevde_1_1sdf.html#a93c4506583db122c5b657d39d6d2bb62">vde::sdf::op_union</a></div><div class="ttdeci">double op_union(double d1, double d2)</div><div class="ttdoc">布尔并集: A ∪ B</div><div class="ttdef"><b>Definition:</b> <a href="sdf__operations_8h_source.html#l00048">sdf_operations.h:48</a></div></div>
<div class="ttc" id="anamespacevde_1_1sdf_html_ab544a3ebc4c0844b322b73bbbe4efb3f"><div class="ttname"><a href="namespacevde_1_1sdf.html#ab544a3ebc4c0844b322b73bbbe4efb3f">vde::sdf::sphere</a></div><div class="ttdeci">double sphere(const Point3D &amp;p, double radius)</div><div class="ttdoc">球体的 SDF</div><div class="ttdef"><b>Definition:</b> <a href="sdf__primitives_8h_source.html#l00068">sdf_primitives.h:68</a></div></div>
</div><!-- fragment -->
<p class="definition">在文件 <a class="el" href="sdf__tree_8h_source.html">sdf_tree.h</a> 中定义.</p>
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