nv::index::IDomain_specific_subdivision_topology Class Reference

Domain specific subdivision with topology information. More...

#include <iaffinity_information.h>

Inherits mi::base::Interface_declare< 0x25d72982, ... >.

Public Types
enum	Topology_type {   TOPO_KD_TREE ,   TOPO_OCTREE }
	Subdivision schemes can rely on different topologies. More...

Public Member Functions
virtual mi::Uint32	get_topology_type () const =0
	Get type of topology,. More...
virtual mi::Uint32	get_nb_nodes () const =0
	Get the total number of nodes of the topology. More...
virtual mi::math::Bbox_struct< mi::Float32, 3 >	get_node_box (mi::Uint32 inode) const =0
	Get the bounding box of the node inode. More...
virtual mi::Uint32	get_node_child_count (mi::Uint32 inode) const =0
	Get the number of children of node inode. More...
virtual mi::Sint32	get_node_child (mi::Uint32 inode, mi::Uint32 ichild) const =0
	Get a child index of the node inode. More...
virtual mi::Sint32	get_node_subregion_index (mi::Uint32 inode) const =0
	Get index of subregion associated with node inode (or -1, if no subregion). More...

Detailed Description

Domain specific subdivision with topology information.

This interface extends IDomain_specific_subdivision by providing topology information for efficient subregion sorting.

Member Enumeration Documentation

Topology_type

enum nv::index::IDomain_specific_subdivision_topology::Topology_type

Subdivision schemes can rely on different topologies.

Enumerator
TOPO_KD_TREE	! Kd-tree based topology.
TOPO_OCTREE	! Octree-based topology.

Member Function Documentation

get_nb_nodes()

virtual mi::Uint32 nv::index::IDomain_specific_subdivision_topology::get_nb_nodes ( ) const

pure virtual

Get the total number of nodes of the topology.

It is assumed that the first node is the root node.

get_node_box()

virtual mi::math::Bbox_struct< mi::Float32, 3 > nv::index::IDomain_specific_subdivision_topology::get_node_box ( mi::Uint32  inode ) const

pure virtual

Get the bounding box of the node inode.

Parameters

inode

The node's index value.

Returns

Returns the bounding box of the node.

get_node_child()

virtual mi::Sint32 nv::index::IDomain_specific_subdivision_topology::get_node_child ( mi::Uint32  inode, mi::Uint32  ichild  ) const

pure virtual

Get a child index of the node inode.

Return -1 if no child at given ichild slot.

Parameters

inode	Index of node.
ichild	Index of child slot.

get_node_child_count()

virtual mi::Uint32 nv::index::IDomain_specific_subdivision_topology::get_node_child_count ( mi::Uint32  inode ) const

pure virtual

Get the number of children of node inode.

Note that this expresses the number of available child slots, but not the number of valid children. This means for a Kd-tree, you can always return 2, and for an Octree 8.

Parameters

inode

The node's index value.

get_node_subregion_index()

virtual mi::Sint32 nv::index::IDomain_specific_subdivision_topology::get_node_subregion_index ( mi::Uint32  inode ) const

pure virtual

Get index of subregion associated with node inode (or -1, if no subregion).

The subregions are provided by the IDomain_specific_subdivision interface.

Parameters

inode

Index of node.

get_topology_type()

virtual mi::Uint32 nv::index::IDomain_specific_subdivision_topology::get_topology_type ( ) const

pure virtual

Get type of topology,.

See also

Topology_type. If not supported, topology will be ignored.

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The documentation for this class was generated from the following file:

• iaffinity_information.h