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<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.

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

Definition at line 87 of file OgreEdgeListBuilder.h.

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

Definition at line 108 of file OgreEdgeListBuilder.h.


Member Function Documentation

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.

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::log ( Log log  ) 


Member Data Documentation

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.

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.

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.


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

Copyright © 2000-2005 by The OGRE Team
Creative Commons License
This work is licensed under a Creative Commons Attribution-ShareAlike 2.5 License.
Last modified Mon Jun 16 12:49:32 2008