Class TTriangleOctreeNode

DescriptionHierarchyFieldsMethodsProperties

Unit

Declaration

type TTriangleOctreeNode = class(TBaseTrianglesOctreeNode)

Description

no description available, TBaseTrianglesOctreeNode description follows
no description available, TOctreeNode description follows

Octree node.

  • Leaf nodes store a list of indexes in ItemsIndices array. These are usuallly indexes to some array of items on TOctree. 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 TOctreeNode class doesn't clarify what kind of items are actually kept.

  • Not leaf (internal) nodes have 8 children nodes in TreeSubNodes.

Each TOctreeNode also has some essential properties like Box, MiddlePoint and ParentTree.

Hierarchy

Overview

Methods

Protected procedure PutItemIntoSubNodes(ItemIndex: integer); override;
Protected function CommonSphereLeaf(const pos: TVector3Single; const Radius: Single; const TriangleToIgnore: PTriangle; const TrianglesToIgnoreFunc: T3DTriangleIgnoreFunc): PTriangle; override;
Protected function CommonBoxLeaf(const ABox: TBox3D; const TriangleToIgnore: PTriangle; const TrianglesToIgnoreFunc: T3DTriangleIgnoreFunc): PTriangle; override;
Protected function CommonSegmentLeaf( out Intersection: TVector3Single; out IntersectionDistance: Single; const pos1, pos2: TVector3Single; const Tag: TMailboxTag; const ReturnClosestIntersection: boolean; const TriangleToIgnore: PTriangle; const IgnoreMarginAtStart: boolean; const TrianglesToIgnoreFunc: T3DTriangleIgnoreFunc): PTriangle; override;
Protected function CommonRayLeaf( out Intersection: TVector3Single; out IntersectionDistance: Single; const RayOrigin, RayDirection: TVector3Single; const Tag: TMailboxTag; const ReturnClosestIntersection: boolean; const TriangleToIgnore: PTriangle; const IgnoreMarginAtStart: boolean; const TrianglesToIgnoreFunc: T3DTriangleIgnoreFunc): PTriangle; override;
Public function ParentTree: TTriangleOctree;
Public function SphereCollision(const pos: TVector3Single; const Radius: Single; const TriangleToIgnore: PTriangle; const TrianglesToIgnoreFunc: T3DTriangleIgnoreFunc): PTriangle; override;
Public function IsSphereCollision(const pos: TVector3Single; const Radius: Single; const TriangleToIgnore: PTriangle; const TrianglesToIgnoreFunc: T3DTriangleIgnoreFunc): boolean; override;
Public function BoxCollision(const ABox: TBox3D; const TriangleToIgnore: PTriangle; const TrianglesToIgnoreFunc: T3DTriangleIgnoreFunc): PTriangle; override;
Public function IsBoxCollision(const ABox: TBox3D; const TriangleToIgnore: PTriangle; const TrianglesToIgnoreFunc: T3DTriangleIgnoreFunc): boolean; override;
Public function SegmentCollision( out Intersection: TVector3Single; out IntersectionDistance: Single; const pos1, pos2: TVector3Single; const Tag: TMailboxTag; const ReturnClosestIntersection: boolean; const TriangleToIgnore: PTriangle; const IgnoreMarginAtStart: boolean; const TrianglesToIgnoreFunc: T3DTriangleIgnoreFunc): PTriangle; override;
Public function IsSegmentCollision( const pos1, pos2: TVector3Single; const Tag: TMailboxTag; const TriangleToIgnore: PTriangle; const IgnoreMarginAtStart: boolean; const TrianglesToIgnoreFunc: T3DTriangleIgnoreFunc): boolean; override;
Public function RayCollision( out Intersection: TVector3Single; out IntersectionDistance: Single; const RayOrigin, RayDirection: TVector3Single; const Tag: TMailboxTag; const ReturnClosestIntersection: boolean; const TriangleToIgnore: PTriangle; const IgnoreMarginAtStart: boolean; const TrianglesToIgnoreFunc: T3DTriangleIgnoreFunc): PTriangle; override;
Public function IsRayCollision( const RayOrigin, RayDirection: TVector3Single; const Tag: TMailboxTag; const TriangleToIgnore: PTriangle; const IgnoreMarginAtStart: boolean; const TrianglesToIgnoreFunc: T3DTriangleIgnoreFunc): boolean; override;

Properties

Public property Items[ItemIndex:integer]: PTriangle read GetItems;

Description

Methods

Protected procedure PutItemIntoSubNodes(ItemIndex: integer); override;
 
Protected function CommonSphereLeaf(const pos: TVector3Single; const Radius: Single; const TriangleToIgnore: PTriangle; const TrianglesToIgnoreFunc: T3DTriangleIgnoreFunc): PTriangle; override;
 
Protected function CommonBoxLeaf(const ABox: TBox3D; const TriangleToIgnore: PTriangle; const TrianglesToIgnoreFunc: T3DTriangleIgnoreFunc): PTriangle; override;
 
Protected function CommonSegmentLeaf( out Intersection: TVector3Single; out IntersectionDistance: Single; const pos1, pos2: TVector3Single; const Tag: TMailboxTag; const ReturnClosestIntersection: boolean; const TriangleToIgnore: PTriangle; const IgnoreMarginAtStart: boolean; const TrianglesToIgnoreFunc: T3DTriangleIgnoreFunc): PTriangle; override;
 
Protected function CommonRayLeaf( out Intersection: TVector3Single; out IntersectionDistance: Single; const RayOrigin, RayDirection: TVector3Single; const Tag: TMailboxTag; const ReturnClosestIntersection: boolean; const TriangleToIgnore: PTriangle; const IgnoreMarginAtStart: boolean; const TrianglesToIgnoreFunc: T3DTriangleIgnoreFunc): PTriangle; override;
 
Public function ParentTree: TTriangleOctree;
 
Public function SphereCollision(const pos: TVector3Single; const Radius: Single; const TriangleToIgnore: PTriangle; const TrianglesToIgnoreFunc: T3DTriangleIgnoreFunc): PTriangle; override;
 
Public function IsSphereCollision(const pos: TVector3Single; const Radius: Single; const TriangleToIgnore: PTriangle; const TrianglesToIgnoreFunc: T3DTriangleIgnoreFunc): boolean; override;
 
Public function BoxCollision(const ABox: TBox3D; const TriangleToIgnore: PTriangle; const TrianglesToIgnoreFunc: T3DTriangleIgnoreFunc): PTriangle; override;
 
Public function IsBoxCollision(const ABox: TBox3D; const TriangleToIgnore: PTriangle; const TrianglesToIgnoreFunc: T3DTriangleIgnoreFunc): boolean; override;
 
Public function SegmentCollision( out Intersection: TVector3Single; out IntersectionDistance: Single; const pos1, pos2: TVector3Single; const Tag: TMailboxTag; const ReturnClosestIntersection: boolean; const TriangleToIgnore: PTriangle; const IgnoreMarginAtStart: boolean; const TrianglesToIgnoreFunc: T3DTriangleIgnoreFunc): PTriangle; override;
 
Public function IsSegmentCollision( const pos1, pos2: TVector3Single; const Tag: TMailboxTag; const TriangleToIgnore: PTriangle; const IgnoreMarginAtStart: boolean; const TrianglesToIgnoreFunc: T3DTriangleIgnoreFunc): boolean; override;
 
Public function RayCollision( out Intersection: TVector3Single; out IntersectionDistance: Single; const RayOrigin, RayDirection: TVector3Single; const Tag: TMailboxTag; const ReturnClosestIntersection: boolean; const TriangleToIgnore: PTriangle; const IgnoreMarginAtStart: boolean; const TrianglesToIgnoreFunc: T3DTriangleIgnoreFunc): PTriangle; override;
 
Public function IsRayCollision( const RayOrigin, RayDirection: TVector3Single; const Tag: TMailboxTag; const TriangleToIgnore: PTriangle; const IgnoreMarginAtStart: boolean; const TrianglesToIgnoreFunc: T3DTriangleIgnoreFunc): boolean; override;
 

Properties

Public property Items[ItemIndex:integer]: PTriangle read GetItems;

Triangles stored in this octree leaf. This is a more comfortable way to access ItemsIndices array. Given ItemIndex indexes our ItemsIndices, and we return ParentTree.Triangles[ItemsIndices[ItemIndex]].


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