This class contains the information required to describe the edge connectivity of a given set of vertices and indexes. More...

#include <OgreEdgeListBuilder.h>

Inheritance diagram for Ogre::EdgeData:

Classes
struct	Edge
	Edge data. More...

struct	EdgeGroup
	A group of edges sharing the same vertex data. More...

struct	Triangle
	Basic triangle structure. More...

Public Types
typedef std::vector< EdgeGroup >	EdgeGroupList

typedef std::vector< Edge >	EdgeList

typedef aligned_vector< Vector4 >	TriangleFaceNormalList
	Array of 4D vector of triangle face normal, which is unit vector orthogonal to the triangles, plus distance from origin.

typedef std::vector< char >	TriangleLightFacingList
	Working vector used when calculating the silhouette.

typedef std::vector< Triangle >	TriangleList

Public Member Functions
	EdgeData ()

EdgeData *	clone ()

void	log (Log *log)
	Debugging method.

void	updateFaceNormals (size_t vertexSet, const HardwareVertexBufferSharedPtr &positionBuffer)
	Updates the face normals for this edge list based on (changed) position information, useful for animated objects.

void	updateTriangleLightFacing (const Vector4 &lightPos)
	Calculate the light facing state of the triangles in this edge list.

Public Attributes
EdgeGroupList	edgeGroups
	All edge groups of this edge list.

bool	isClosed
	Flag indicate the mesh is manifold.

TriangleFaceNormalList	triangleFaceNormals
	All triangle face normals.

TriangleLightFacingList	triangleLightFacings
	Triangle light facing states.

TriangleList	triangles
	Main triangles array, stores all triangles of this edge list.

Detailed Description

This class contains the information required to describe the edge connectivity of a given set of vertices and indexes.

This information is built using the EdgeListBuilder class. Note that for a given mesh, which can be made up of multiple submeshes, there are separate edge lists for when

Member Typedef Documentation

◆ TriangleFaceNormalList

typedef aligned_vector<Vector4> Ogre::EdgeData::TriangleFaceNormalList

Array of 4D vector of triangle face normal, which is unit vector orthogonal to the triangles, plus distance from origin.

Use aligned policy here because we are intended to use in SIMD optimised routines.

◆ TriangleLightFacingList

typedef std::vector<char> Ogre::EdgeData::TriangleLightFacingList

Working vector used when calculating the silhouette.

Use std::vector<char> instead of std::vector<bool> which might implemented similar bit-fields causing loss performance.

◆ TriangleList

typedef std::vector<Triangle> Ogre::EdgeData::TriangleList

◆ EdgeList

typedef std::vector<Edge> Ogre::EdgeData::EdgeList

◆ EdgeGroupList

typedef std::vector<EdgeGroup> Ogre::EdgeData::EdgeGroupList

Constructor & Destructor Documentation

◆ EdgeData()

Ogre::EdgeData::EdgeData ( )

Member Function Documentation

◆ updateTriangleLightFacing()

void Ogre::EdgeData::updateTriangleLightFacing ( const Vector4 & lightPos )

Calculate the light facing state of the triangles in this edge list.

This is normally the first stage of calculating a silhouette, i.e. establishing which tris are facing the light and which are facing away. This state is stored in the 'triangleLightFacings'.

Parameters

lightPos 4D position of the light in object space, note that for directional lights (which have no position), the w component is 0 and the x/y/z position are the direction.

◆ updateFaceNormals()

void Ogre::EdgeData::updateFaceNormals	(	size_t	vertexSet,
		const HardwareVertexBufferSharedPtr &	positionBuffer
	)

Updates the face normals for this edge list based on (changed) position information, useful for animated objects.

Parameters

vertexSet	The vertex set we are updating
positionBuffer	The updated position buffer, must contain ONLY xyz

◆ clone()

EdgeData * Ogre::EdgeData::clone ( )

◆ log()

void Ogre::EdgeData::log ( Log * log )

Debugging method.

Member Data Documentation

◆ triangles

TriangleList Ogre::EdgeData::triangles

Main triangles array, stores all triangles of this edge list.

Note that triangles are grouping against edge group.

◆ triangleFaceNormals

TriangleFaceNormalList Ogre::EdgeData::triangleFaceNormals

All triangle face normals.

It should be 1:1 with triangles.

◆ triangleLightFacings

TriangleLightFacingList Ogre::EdgeData::triangleLightFacings

Triangle light facing states.

It should be 1:1 with triangles.

◆ edgeGroups

EdgeGroupList Ogre::EdgeData::edgeGroups

All edge groups of this edge list.

◆ isClosed

bool Ogre::EdgeData::isClosed

Flag indicate the mesh is manifold.

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

OgreEdgeListBuilder.h

Classes

Public Types

Public Member Functions

Public Attributes