# Ogre::EdgeData Class Reference

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

`#include <OgreEdgeListBuilder.h>`

List of all members.

## Public Types

typedef std::vector< Vector4, AlignedAllocator< Vector4 > > | TriangleFaceNormalList
typedef std::vector< char > | TriangleLightFacingList
typedef std::vector< Triangle > | TriangleList
typedef std::vector< Edge > | EdgeList
typedef std::vector< EdgeGroup > | EdgeGroupList

## Public Member Functions

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

## Public Attributes

TriangleList | triangles
| Main triangles array, stores all triangles of this edge list.
TriangleFaceNormalList | triangleFaceNormals
| All triangle face normals.
TriangleLightFacingList | triangleLightFacings
| Triangle light facing states.
EdgeGroupList | edgeGroups
| All edge groups of this edge list.
bool | isClosed
| Flag indicate the mesh is manifold.

## Classes

struct | Edge
| Edge data. More...
struct | EdgeGroup
| A group of edges sharing the same vertex data. More...
struct | Triangle
| Basic triangle structure. More...

## Detailed Description

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

Remarks:
  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

Definition at line 47 of file OgreEdgeListBuilder.h.

## Member Typedef Documentation

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

| Definition at line 108 of file OgreEdgeListBuilder.h.

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

| Definition at line 87 of file OgreEdgeListBuilder.h.

typedef std::vector<Vector4, AlignedAllocator<Vector4> > Ogre::EdgeData::TriangleFaceNormalList

| Definition at line 79 of file OgreEdgeListBuilder.h.

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

| Definition at line 84 of file OgreEdgeListBuilder.h.

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

| Definition at line 86 of file OgreEdgeListBuilder.h.

## Member Function Documentation

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

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

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

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

Remarks:
  This is normally the first stage of calculating a silhouette, ie 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.

## Member Data Documentation

EdgeGroupList Ogre::EdgeData::edgeGroups

| All edge groups of this edge list. Definition at line 119 of file OgreEdgeListBuilder.h.

bool Ogre::EdgeData::isClosed

| Flag indicate the mesh is manifold. Definition at line 121 of file OgreEdgeListBuilder.h.

TriangleFaceNormalList Ogre::EdgeData::triangleFaceNormals

| All triangle face normals. It should be 1:1 with triangles. Definition at line 115 of file OgreEdgeListBuilder.h.

TriangleLightFacingList Ogre::EdgeData::triangleLightFacings

| Triangle light facing states. It should be 1:1 with triangles. Definition at line 117 of file OgreEdgeListBuilder.h.

TriangleList Ogre::EdgeData::triangles

| Main triangles array, stores all triangles of this edge list. Note that triangles are grouping against edge group. Definition at line 113 of file OgreEdgeListBuilder.h.

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

- OgreEdgeListBuilder.h

Copyright © 2000-2005 by The OGRE Team
This work is licensed under a Creative Commons Attribution-ShareAlike 2.5 License.
Last modified Mon Aug 20 13:51:34 2007