/**************** New Functions Begin ***************/
/// <summary>
/// Generate navmesh by entity
/// </summary>
/// <param name="ent">Ogre Entity</param>
/// <returns>Navmesh</returns>
public static Navmesh LoadNavmesh(Entity ent)
{
bool addedSharedVertex = false;
vertices.Clear();
faces.Clear();
MeshPtr mesh = ent.GetMesh();
Mesh.SubMeshIterator subIterator = mesh.GetSubMeshIterator();
uint vertexNum = 0;
uint vertexOffset = mesh.sharedVertexData.vertexStart;
MyVector3 <float>[] verticeArray = new MyVector3 <float> [vertexNum];
VertexElement posElem = mesh.sharedVertexData.vertexDeclaration.FindElementBySemantic(VertexElementSemantic.VES_POSITION);
HardwareVertexBufferSharedPtr vertexBuffer = mesh.sharedVertexData.vertexBufferBinding.GetBuffer(posElem.Source);
while (subIterator.MoveNext())
{
SubMesh subMesh = subIterator.Current;
VertexData vertexData = subMesh.useSharedVertices ? mesh.sharedVertexData : subMesh.vertexData;
HardwareIndexBufferSharedPtr indexBuffer = subMesh.indexData.indexBuffer;
HardwareIndexBuffer.IndexType indexType = indexBuffer.Type;
uint indexCount = subMesh.indexData.indexCount;
uint trisNum = indexCount / 3;
uint[] indcies = new uint[indexCount];
uint indexOffset = subMesh.indexData.indexStart;
if (subMesh.useSharedVertices)
{
if (!addedSharedVertex)
{
vertexNum += mesh.sharedVertexData.vertexCount;
addedSharedVertex = true;
}
}
else
{
vertexNum += subMesh.vertexData.vertexCount;
}
unsafe
{
uint * pLong = (uint *)(indexBuffer.Lock(HardwareBuffer.LockOptions.HBL_READ_ONLY));
ushort *pShort = (ushort *)pLong;
for (int i = 0; i < indexCount; i++)
{
if (indexType == HardwareIndexBuffer.IndexType.IT_32BIT)
{
indcies[indexOffset] = pLong[i] + vertexNum;
}
else
{
indcies[indexOffset] = pShort[i] + vertexNum;
}
indexOffset++;
}
}
int indexLength = indcies.Length / 3;
for (int i = 0; i < indexLength; i++)
{
faces.Add(new MyVector3 <ushort>(
(ushort)indcies[i * 3 + 0],
(ushort)indcies[i * 3 + 1],
(ushort)indcies[i * 3 + 2]
));
}
indexBuffer.Unlock();
if (subMesh.vertexData != null)
{
vertexNum = subMesh.vertexData.vertexCount;
vertexOffset = subMesh.vertexData.vertexStart;
verticeArray = new MyVector3 <float> [vertexNum];
posElem = subMesh.vertexData.vertexDeclaration.FindElementBySemantic(VertexElementSemantic.VES_POSITION);
vertexBuffer = subMesh.vertexData.vertexBufferBinding.GetBuffer(posElem.Source);
unsafe
{
byte * vertexMemory = (byte *)vertexBuffer.Lock(HardwareBuffer.LockOptions.HBL_READ_ONLY);
float *pVertexBuffer;
for (int i = 0; i < vertexNum; i++)
{
posElem.BaseVertexPointerToElement(vertexMemory, &pVertexBuffer);
verticeArray[vertexOffset] = (new MyVector3 <float>(
pVertexBuffer[0],
pVertexBuffer[1],
pVertexBuffer[2]
));
vertexMemory += vertexBuffer.VertexSize;
vertexOffset++;
}
}
for (int i = 0; i < verticeArray.Length; i++)
{
vertices.Add(verticeArray[i]);
}
vertexBuffer.Unlock();
}
}
vertexNum = mesh.sharedVertexData.vertexCount;
vertexOffset = mesh.sharedVertexData.vertexStart;
verticeArray = new MyVector3 <float> [vertexNum];
posElem = mesh.sharedVertexData.vertexDeclaration.FindElementBySemantic(VertexElementSemantic.VES_POSITION);
vertexBuffer = mesh.sharedVertexData.vertexBufferBinding.GetBuffer(posElem.Source);
unsafe
{
byte * vertexMemory = (byte *)vertexBuffer.Lock(HardwareBuffer.LockOptions.HBL_READ_ONLY);
float *pVertexBuffer;
for (int i = 0; i < vertexNum; i++)
{
posElem.BaseVertexPointerToElement(vertexMemory, &pVertexBuffer);
verticeArray[vertexOffset] = (new MyVector3 <float>(
pVertexBuffer[0],
pVertexBuffer[1],
pVertexBuffer[2]
));
vertexMemory += vertexBuffer.VertexSize;
vertexOffset++;
}
}
for (int i = 0; i < verticeArray.Length; i++)
{
vertices.Add(verticeArray[i]);
}
vertexBuffer.Unlock();
return(GenerateNavmesh());
}
