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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/1999/REC-html401-19991224/loose.dtd">
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<title>Castle Game Engine: CastleTriangleOctree: Class TTriangleOctreeNode</title>
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<h2>Castle Game Engine</h2><p><a href="introduction.html" class="navigation">Introduction</a></p><p><a href="AllUnits.html" class="navigation">Units</a></p><p><a href="ClassHierarchy.html" class="navigation">Class Hierarchy</a></p><p><a href="AllClasses.html" class="navigation">Classes, Interfaces, Objects and Records</a></p><p><a href="AllTypes.html" class="navigation">Types</a></p><p><a href="AllVariables.html" class="navigation">Variables</a></p><p><a href="AllConstants.html" class="navigation">Constants</a></p><p><a href="AllFunctions.html" class="navigation">Functions and Procedures</a></p><p><a href="AllIdentifiers.html" class="navigation">Identifiers</a></p></td><td class="content">
<a name="TTriangleOctreeNode"></a><h1 class="cio">Class TTriangleOctreeNode</h1>
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<td><a class="section" href="#PasDoc-Description">Description</a></td><td><a class="section" href="#PasDoc-Hierarchy">Hierarchy</a></td><td>Fields</td><td><a class="section" href="#PasDoc-Methods">Methods</a></td><td><a class="section" href="#PasDoc-Properties">Properties</a></td></tr></table>
<a name="PasDoc-Description"></a><h2 class="unit">Unit</h2>
<p class="unitlink">
<a href="CastleTriangleOctree.html">CastleTriangleOctree</a></p>
<h2 class="declaration">Declaration</h2>
<p class="declaration">
<code>type TTriangleOctreeNode = class(<a class="normal" href="X3DTriangles.TBaseTrianglesOctreeNode.html">TBaseTrianglesOctreeNode</a>)</code></p>
<h2 class="description">Description</h2>
<div class="nodescription">no description available, TBaseTrianglesOctreeNode description follows</div><div class="nodescription">no description available, TOctreeNode description follows</div><p>
Octree node.
<p></p>
<ul class="paragraph_spacing">
<li><p><i>Leaf nodes</i> store a list of indexes in <a class="normal" href="CastleOctree.TOctreeNode.html#ItemsIndices">ItemsIndices</a> array. These are usuallly indexes to some array of items on <a class="normal" href="CastleOctree.TOctree.html">TOctree</a>. For the sake of this unit they are just some integers that uniquely describe items that you want to keep in octree leafs. The base abstract <code>TOctreeNode</code> class doesn't clarify what kind of items are actually kept.</p></li>
<li><p><i>Not leaf (internal) nodes</i> have 8 children nodes in <a class="normal" href="CastleOctree.TOctreeNode.html#TreeSubNodes">TreeSubNodes</a>.</p></li>
</ul>
<p>
<p>Each <a class="normal" href="CastleOctree.TOctreeNode.html">TOctreeNode</a> also has some essential properties like Box, <a class="normal" href="CastleOctree.TOctreeNode.html#MiddlePoint">MiddlePoint</a> and ParentTree.</p>
<a name="PasDoc-Hierarchy"></a><h2 class="hierarchy">Hierarchy</h2>
<ul class="hierarchy"><li class="ancestor">TObject</li>
<li class="ancestor"><a class="normal" href="CastleOctree.TOctreeNode.html">TOctreeNode</a></li>
<li class="ancestor"><a class="normal" href="X3DTriangles.TBaseTrianglesOctreeNode.html">TBaseTrianglesOctreeNode</a></li>
<li class="thisitem">TTriangleOctreeNode</li></ul><h2 class="overview">Overview</h2>
<a name="PasDoc-Methods"></a><h3 class="summary">Methods</h3>
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<td class="itemcode"><code>procedure <b><a href="CastleTriangleOctree.TTriangleOctreeNode.html#PutItemIntoSubNodes">PutItemIntoSubNodes</a></b>(ItemIndex: integer); override;</code></td>
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<td class="itemcode"><code>function <b><a href="CastleTriangleOctree.TTriangleOctreeNode.html#CommonSphereLeaf">CommonSphereLeaf</a></b>(const pos: <a href="CastleVectors.html#TVector3Single">TVector3Single</a>; const Radius: Single; const TriangleToIgnore: <a href="X3DTriangles.html#PTriangle">PTriangle</a>; const TrianglesToIgnoreFunc: <a href="CastleTriangles.html#T3DTriangleIgnoreFunc">T3DTriangleIgnoreFunc</a>): <a href="X3DTriangles.html#PTriangle">PTriangle</a>; override;</code></td>
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<td class="itemcode"><code>function <b><a href="CastleTriangleOctree.TTriangleOctreeNode.html#CommonBoxLeaf">CommonBoxLeaf</a></b>(const ABox: <a href="CastleBoxes.TBox3D.html">TBox3D</a>; const TriangleToIgnore: <a href="X3DTriangles.html#PTriangle">PTriangle</a>; const TrianglesToIgnoreFunc: <a href="CastleTriangles.html#T3DTriangleIgnoreFunc">T3DTriangleIgnoreFunc</a>): <a href="X3DTriangles.html#PTriangle">PTriangle</a>; override;</code></td>
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<td class="itemcode"><code>function <b><a href="CastleTriangleOctree.TTriangleOctreeNode.html#CommonSegmentLeaf">CommonSegmentLeaf</a></b>( out Intersection: <a href="CastleVectors.html#TVector3Single">TVector3Single</a>; out IntersectionDistance: Single; const pos1, pos2: <a href="CastleVectors.html#TVector3Single">TVector3Single</a>; const Tag: <a href="X3DTriangles.html#TMailboxTag">TMailboxTag</a>; const ReturnClosestIntersection: boolean; const TriangleToIgnore: <a href="X3DTriangles.html#PTriangle">PTriangle</a>; const IgnoreMarginAtStart: boolean; const TrianglesToIgnoreFunc: <a href="CastleTriangles.html#T3DTriangleIgnoreFunc">T3DTriangleIgnoreFunc</a>): <a href="X3DTriangles.html#PTriangle">PTriangle</a>; override;</code></td>
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<td class="itemcode"><code>function <b><a href="CastleTriangleOctree.TTriangleOctreeNode.html#CommonRayLeaf">CommonRayLeaf</a></b>( out Intersection: <a href="CastleVectors.html#TVector3Single">TVector3Single</a>; out IntersectionDistance: Single; const RayOrigin, RayDirection: <a href="CastleVectors.html#TVector3Single">TVector3Single</a>; const Tag: <a href="X3DTriangles.html#TMailboxTag">TMailboxTag</a>; const ReturnClosestIntersection: boolean; const TriangleToIgnore: <a href="X3DTriangles.html#PTriangle">PTriangle</a>; const IgnoreMarginAtStart: boolean; const TrianglesToIgnoreFunc: <a href="CastleTriangles.html#T3DTriangleIgnoreFunc">T3DTriangleIgnoreFunc</a>): <a href="X3DTriangles.html#PTriangle">PTriangle</a>; override;</code></td>
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<td class="itemcode"><code>function <b><a href="CastleTriangleOctree.TTriangleOctreeNode.html#ParentTree">ParentTree</a></b>: <a href="CastleTriangleOctree.TTriangleOctree.html">TTriangleOctree</a>;</code></td>
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<td class="itemcode"><code>function <b><a href="CastleTriangleOctree.TTriangleOctreeNode.html#SphereCollision">SphereCollision</a></b>(const pos: <a href="CastleVectors.html#TVector3Single">TVector3Single</a>; const Radius: Single; const TriangleToIgnore: <a href="X3DTriangles.html#PTriangle">PTriangle</a>; const TrianglesToIgnoreFunc: <a href="CastleTriangles.html#T3DTriangleIgnoreFunc">T3DTriangleIgnoreFunc</a>): <a href="X3DTriangles.html#PTriangle">PTriangle</a>; override;</code></td>
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<td class="itemcode"><code>function <b><a href="CastleTriangleOctree.TTriangleOctreeNode.html#IsSphereCollision">IsSphereCollision</a></b>(const pos: <a href="CastleVectors.html#TVector3Single">TVector3Single</a>; const Radius: Single; const TriangleToIgnore: <a href="X3DTriangles.html#PTriangle">PTriangle</a>; const TrianglesToIgnoreFunc: <a href="CastleTriangles.html#T3DTriangleIgnoreFunc">T3DTriangleIgnoreFunc</a>): boolean; override;</code></td>
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<td class="itemcode"><code>function <b><a href="CastleTriangleOctree.TTriangleOctreeNode.html#BoxCollision">BoxCollision</a></b>(const ABox: <a href="CastleBoxes.TBox3D.html">TBox3D</a>; const TriangleToIgnore: <a href="X3DTriangles.html#PTriangle">PTriangle</a>; const TrianglesToIgnoreFunc: <a href="CastleTriangles.html#T3DTriangleIgnoreFunc">T3DTriangleIgnoreFunc</a>): <a href="X3DTriangles.html#PTriangle">PTriangle</a>; override;</code></td>
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<td class="itemcode"><code>function <b><a href="CastleTriangleOctree.TTriangleOctreeNode.html#IsBoxCollision">IsBoxCollision</a></b>(const ABox: <a href="CastleBoxes.TBox3D.html">TBox3D</a>; const TriangleToIgnore: <a href="X3DTriangles.html#PTriangle">PTriangle</a>; const TrianglesToIgnoreFunc: <a href="CastleTriangles.html#T3DTriangleIgnoreFunc">T3DTriangleIgnoreFunc</a>): boolean; override;</code></td>
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<td class="itemcode"><code>function <b><a href="CastleTriangleOctree.TTriangleOctreeNode.html#SegmentCollision">SegmentCollision</a></b>( out Intersection: <a href="CastleVectors.html#TVector3Single">TVector3Single</a>; out IntersectionDistance: Single; const pos1, pos2: <a href="CastleVectors.html#TVector3Single">TVector3Single</a>; const Tag: <a href="X3DTriangles.html#TMailboxTag">TMailboxTag</a>; const ReturnClosestIntersection: boolean; const TriangleToIgnore: <a href="X3DTriangles.html#PTriangle">PTriangle</a>; const IgnoreMarginAtStart: boolean; const TrianglesToIgnoreFunc: <a href="CastleTriangles.html#T3DTriangleIgnoreFunc">T3DTriangleIgnoreFunc</a>): <a href="X3DTriangles.html#PTriangle">PTriangle</a>; override;</code></td>
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<td class="itemcode"><code>function <b><a href="CastleTriangleOctree.TTriangleOctreeNode.html#IsSegmentCollision">IsSegmentCollision</a></b>( const pos1, pos2: <a href="CastleVectors.html#TVector3Single">TVector3Single</a>; const Tag: <a href="X3DTriangles.html#TMailboxTag">TMailboxTag</a>; const TriangleToIgnore: <a href="X3DTriangles.html#PTriangle">PTriangle</a>; const IgnoreMarginAtStart: boolean; const TrianglesToIgnoreFunc: <a href="CastleTriangles.html#T3DTriangleIgnoreFunc">T3DTriangleIgnoreFunc</a>): boolean; override;</code></td>
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<td class="itemcode"><code>function <b><a href="CastleTriangleOctree.TTriangleOctreeNode.html#RayCollision">RayCollision</a></b>( out Intersection: <a href="CastleVectors.html#TVector3Single">TVector3Single</a>; out IntersectionDistance: Single; const RayOrigin, RayDirection: <a href="CastleVectors.html#TVector3Single">TVector3Single</a>; const Tag: <a href="X3DTriangles.html#TMailboxTag">TMailboxTag</a>; const ReturnClosestIntersection: boolean; const TriangleToIgnore: <a href="X3DTriangles.html#PTriangle">PTriangle</a>; const IgnoreMarginAtStart: boolean; const TrianglesToIgnoreFunc: <a href="CastleTriangles.html#T3DTriangleIgnoreFunc">T3DTriangleIgnoreFunc</a>): <a href="X3DTriangles.html#PTriangle">PTriangle</a>; override;</code></td>
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<td class="itemcode"><code>function <b><a href="CastleTriangleOctree.TTriangleOctreeNode.html#IsRayCollision">IsRayCollision</a></b>( const RayOrigin, RayDirection: <a href="CastleVectors.html#TVector3Single">TVector3Single</a>; const Tag: <a href="X3DTriangles.html#TMailboxTag">TMailboxTag</a>; const TriangleToIgnore: <a href="X3DTriangles.html#PTriangle">PTriangle</a>; const IgnoreMarginAtStart: boolean; const TrianglesToIgnoreFunc: <a href="CastleTriangles.html#T3DTriangleIgnoreFunc">T3DTriangleIgnoreFunc</a>): boolean; override;</code></td>
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<a name="PasDoc-Properties"></a><h3 class="summary">Properties</h3>
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<td class="itemcode"><code>property <b><a href="CastleTriangleOctree.TTriangleOctreeNode.html#Items">Items</a></b>[ItemIndex:integer]: <a href="X3DTriangles.html#PTriangle">PTriangle</a> read GetItems;</code></td>
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<h2 class="description">Description</h2>
<h3 class="detail">Methods</h3>
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<td class="itemcode"><a name="PutItemIntoSubNodes"></a><code>procedure <b>PutItemIntoSubNodes</b>(ItemIndex: integer); override;</code></td>
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<td class="itemcode"><a name="CommonSphereLeaf"></a><code>function <b>CommonSphereLeaf</b>(const pos: <a href="CastleVectors.html#TVector3Single">TVector3Single</a>; const Radius: Single; const TriangleToIgnore: <a href="X3DTriangles.html#PTriangle">PTriangle</a>; const TrianglesToIgnoreFunc: <a href="CastleTriangles.html#T3DTriangleIgnoreFunc">T3DTriangleIgnoreFunc</a>): <a href="X3DTriangles.html#PTriangle">PTriangle</a>; override;</code></td>
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<td class="itemcode"><a name="CommonBoxLeaf"></a><code>function <b>CommonBoxLeaf</b>(const ABox: <a href="CastleBoxes.TBox3D.html">TBox3D</a>; const TriangleToIgnore: <a href="X3DTriangles.html#PTriangle">PTriangle</a>; const TrianglesToIgnoreFunc: <a href="CastleTriangles.html#T3DTriangleIgnoreFunc">T3DTriangleIgnoreFunc</a>): <a href="X3DTriangles.html#PTriangle">PTriangle</a>; override;</code></td>
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<td class="itemcode"><a name="CommonSegmentLeaf"></a><code>function <b>CommonSegmentLeaf</b>( out Intersection: <a href="CastleVectors.html#TVector3Single">TVector3Single</a>; out IntersectionDistance: Single; const pos1, pos2: <a href="CastleVectors.html#TVector3Single">TVector3Single</a>; const Tag: <a href="X3DTriangles.html#TMailboxTag">TMailboxTag</a>; const ReturnClosestIntersection: boolean; const TriangleToIgnore: <a href="X3DTriangles.html#PTriangle">PTriangle</a>; const IgnoreMarginAtStart: boolean; const TrianglesToIgnoreFunc: <a href="CastleTriangles.html#T3DTriangleIgnoreFunc">T3DTriangleIgnoreFunc</a>): <a href="X3DTriangles.html#PTriangle">PTriangle</a>; override;</code></td>
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<td class="itemcode"><a name="CommonRayLeaf"></a><code>function <b>CommonRayLeaf</b>( out Intersection: <a href="CastleVectors.html#TVector3Single">TVector3Single</a>; out IntersectionDistance: Single; const RayOrigin, RayDirection: <a href="CastleVectors.html#TVector3Single">TVector3Single</a>; const Tag: <a href="X3DTriangles.html#TMailboxTag">TMailboxTag</a>; const ReturnClosestIntersection: boolean; const TriangleToIgnore: <a href="X3DTriangles.html#PTriangle">PTriangle</a>; const IgnoreMarginAtStart: boolean; const TrianglesToIgnoreFunc: <a href="CastleTriangles.html#T3DTriangleIgnoreFunc">T3DTriangleIgnoreFunc</a>): <a href="X3DTriangles.html#PTriangle">PTriangle</a>; override;</code></td>
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<td class="itemcode"><a name="ParentTree"></a><code>function <b>ParentTree</b>: <a href="CastleTriangleOctree.TTriangleOctree.html">TTriangleOctree</a>;</code></td>
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<td class="itemcode"><a name="SphereCollision"></a><code>function <b>SphereCollision</b>(const pos: <a href="CastleVectors.html#TVector3Single">TVector3Single</a>; const Radius: Single; const TriangleToIgnore: <a href="X3DTriangles.html#PTriangle">PTriangle</a>; const TrianglesToIgnoreFunc: <a href="CastleTriangles.html#T3DTriangleIgnoreFunc">T3DTriangleIgnoreFunc</a>): <a href="X3DTriangles.html#PTriangle">PTriangle</a>; override;</code></td>
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<td class="itemcode"><a name="IsSphereCollision"></a><code>function <b>IsSphereCollision</b>(const pos: <a href="CastleVectors.html#TVector3Single">TVector3Single</a>; const Radius: Single; const TriangleToIgnore: <a href="X3DTriangles.html#PTriangle">PTriangle</a>; const TrianglesToIgnoreFunc: <a href="CastleTriangles.html#T3DTriangleIgnoreFunc">T3DTriangleIgnoreFunc</a>): boolean; override;</code></td>
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<td class="itemcode"><a name="BoxCollision"></a><code>function <b>BoxCollision</b>(const ABox: <a href="CastleBoxes.TBox3D.html">TBox3D</a>; const TriangleToIgnore: <a href="X3DTriangles.html#PTriangle">PTriangle</a>; const TrianglesToIgnoreFunc: <a href="CastleTriangles.html#T3DTriangleIgnoreFunc">T3DTriangleIgnoreFunc</a>): <a href="X3DTriangles.html#PTriangle">PTriangle</a>; override;</code></td>
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<td class="itemcode"><a name="IsBoxCollision"></a><code>function <b>IsBoxCollision</b>(const ABox: <a href="CastleBoxes.TBox3D.html">TBox3D</a>; const TriangleToIgnore: <a href="X3DTriangles.html#PTriangle">PTriangle</a>; const TrianglesToIgnoreFunc: <a href="CastleTriangles.html#T3DTriangleIgnoreFunc">T3DTriangleIgnoreFunc</a>): boolean; override;</code></td>
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<td class="itemcode"><a name="SegmentCollision"></a><code>function <b>SegmentCollision</b>( out Intersection: <a href="CastleVectors.html#TVector3Single">TVector3Single</a>; out IntersectionDistance: Single; const pos1, pos2: <a href="CastleVectors.html#TVector3Single">TVector3Single</a>; const Tag: <a href="X3DTriangles.html#TMailboxTag">TMailboxTag</a>; const ReturnClosestIntersection: boolean; const TriangleToIgnore: <a href="X3DTriangles.html#PTriangle">PTriangle</a>; const IgnoreMarginAtStart: boolean; const TrianglesToIgnoreFunc: <a href="CastleTriangles.html#T3DTriangleIgnoreFunc">T3DTriangleIgnoreFunc</a>): <a href="X3DTriangles.html#PTriangle">PTriangle</a>; override;</code></td>
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<td class="itemcode"><a name="IsSegmentCollision"></a><code>function <b>IsSegmentCollision</b>( const pos1, pos2: <a href="CastleVectors.html#TVector3Single">TVector3Single</a>; const Tag: <a href="X3DTriangles.html#TMailboxTag">TMailboxTag</a>; const TriangleToIgnore: <a href="X3DTriangles.html#PTriangle">PTriangle</a>; const IgnoreMarginAtStart: boolean; const TrianglesToIgnoreFunc: <a href="CastleTriangles.html#T3DTriangleIgnoreFunc">T3DTriangleIgnoreFunc</a>): boolean; override;</code></td>
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<td class="itemcode"><a name="RayCollision"></a><code>function <b>RayCollision</b>( out Intersection: <a href="CastleVectors.html#TVector3Single">TVector3Single</a>; out IntersectionDistance: Single; const RayOrigin, RayDirection: <a href="CastleVectors.html#TVector3Single">TVector3Single</a>; const Tag: <a href="X3DTriangles.html#TMailboxTag">TMailboxTag</a>; const ReturnClosestIntersection: boolean; const TriangleToIgnore: <a href="X3DTriangles.html#PTriangle">PTriangle</a>; const IgnoreMarginAtStart: boolean; const TrianglesToIgnoreFunc: <a href="CastleTriangles.html#T3DTriangleIgnoreFunc">T3DTriangleIgnoreFunc</a>): <a href="X3DTriangles.html#PTriangle">PTriangle</a>; override;</code></td>
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<td class="itemcode"><a name="IsRayCollision"></a><code>function <b>IsRayCollision</b>( const RayOrigin, RayDirection: <a href="CastleVectors.html#TVector3Single">TVector3Single</a>; const Tag: <a href="X3DTriangles.html#TMailboxTag">TMailboxTag</a>; const TriangleToIgnore: <a href="X3DTriangles.html#PTriangle">PTriangle</a>; const IgnoreMarginAtStart: boolean; const TrianglesToIgnoreFunc: <a href="CastleTriangles.html#T3DTriangleIgnoreFunc">T3DTriangleIgnoreFunc</a>): boolean; override;</code></td>
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<h3 class="detail">Properties</h3>
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<td class="itemcode"><a name="Items"></a><code>property <b>Items</b>[ItemIndex:integer]: <a href="X3DTriangles.html#PTriangle">PTriangle</a> read GetItems;</code></td>
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<p>
Triangles stored in this octree leaf. This is a more comfortable way to access <a class="normal" href="CastleOctree.TOctreeNode.html#ItemsIndices">ItemsIndices</a> array. Given ItemIndex indexes our <a class="normal" href="CastleOctree.TOctreeNode.html#ItemsIndices">ItemsIndices</a>, and we return <code>ParentTree.Triangles[<a class="normal" href="CastleOctree.TOctreeNode.html#ItemsIndices">ItemsIndices</a>[ItemIndex]]</code>.</p>
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