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FNode

API > API/Plugins > API/Plugins/Water > API/Plugins/Water/FWaterQuadTree

   
Name FNode
Type struct
Header File /Engine/Plugins/Experimental/Water/Source/Runtime/Public/WaterQuadTree.h
Include Path #include "WaterQuadTree.h"

Syntax

struct FNode

Constructors

Name Remarks Include Path Unreal Specifiers

FNode()

   WaterQuadTree.h  

Variables

Public

Name Type Remarks Include Path Unreal Specifiers
Bounds FBox World bounds WaterQuadTree.h  
BreadthFirstIndex uint32   WaterQuadTree.h  
Children uint32 Children, 0 means invalid WaterQuadTree.h  
HasCompleteSubtree uint32 If all 4 child nodes have a full set of leaf nodes (each descentant has 4 children all the way down) WaterQuadTree.h  
HasMaterial uint32 Cached value to avoid having to visit this node's FWaterBodyRenderData WaterQuadTree.h  
IsSubtreeSameWaterBody uint32 If all descendant nodes are from the same waterbody. WaterQuadTree.h  
ParentIndex uint32 Index to parent WaterQuadTree.h  
TransitionWaterBodyIndex uint32 Index to the water body that this tile possibly transitions to WaterQuadTree.h  
WaterBodyIndex uint32 Index into the water body render data array on the tree. WaterQuadTree.h  

Functions

Public

Name Remarks Include Path Unreal Specifiers

void AddNodeForRender ( const FNodeData& InNodeData,
const FWaterBodyRenderData& InWaterBodyRenderData,
int32 InDensityLevel,
int32 InLODLevel,
const FTraversalDesc& InTraversalDesc,
FTraversalOutput& Output
) const

 Add instance for rendering this node WaterQuadTree.h  

void AddNodes ( FNodeData& InNodeData,
const FBox& InMeshBounds,
const FBox& InWaterBodyBounds,
uint32 InWaterBodyIndex,
int32 InLODLevel,
uint32 InParentIndex
)

 Add nodes that intersect InMeshBounds. WaterQuadTree.h  

bool CanMerge ( const FNode& Other
) const

 Check if all conditions are met to potentially allow this and another node to render as one WaterQuadTree.h  

bool CanRender ( int32 InDensityLevel,
int32 InForceCollapseDensityLevel,
const FWaterBodyRenderData& InWaterBodyRenderData
) const

 If this node is allowed to be rendered, it means it can be rendered in place of all leaf nodes in its subtree. WaterQuadTree.h  

bool QueryBaseHeightAtLocation ( const FNodeData& InNodeData,
const FVector2D& InWorldLocationXY,
float& OutHeight
) const

 Recursive function to query the height(prior to any displacement) at a given location, return false if no height could be found WaterQuadTree.h  

bool QueryBoundsAtLocation ( const FNodeData& InNodeData,
const FVector2D& InWorldLocationXY,
FBox& OutHeight
) const

 Recursive function to query the bounds of a tile at a given location, return false if no leaf node could be found WaterQuadTree.h  

void SelectLOD ( const FNodeData& InNodeData,
int32 InLODLevel,
const FTraversalDesc& InTraversalDesc,
FTraversalOutput& Output
) const

 Recursive function to select nodes visible from the current point of view WaterQuadTree.h  

void SelectLODRefinement ( const FNodeData& InNodeData,
int32 InDensityLevel,
int32 InLODLevel,
const FTraversalDesc& InTraversalDesc,
FTraversalOutput& Output
) const

 Recursive function to traverse down to the appropriate density level. WaterQuadTree.h  

void SelectLODWithinBounds ( const FNodeData& InNodeData,
int32 InLODLevel,
const FTraversalDesc& InTraversalDesc,
FTraversalOutput& Output
) const

 Recursive function to select nodes visible from the current point of view within an active bounding box WaterQuadTree.h  

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