private void CreateBuffers(ushort[] indices, short[] vertices)
{
var numIndices = (uint)indices.Length;
var numVertices = (uint)vertices.Length;
_vertexDeclaration = HardwareBufferManager.Singleton.CreateVertexDeclaration();
_vertexDeclaration.AddElement(0, 0, VertexElementType.VET_SHORT2, VertexElementSemantic.VES_POSITION);
_ib = HardwareBufferManager.Singleton.CreateIndexBuffer(HardwareIndexBuffer.IndexType.IT_16BIT, numIndices, HardwareBuffer.Usage.HBU_STATIC_WRITE_ONLY);
_vb = HardwareBufferManager.Singleton.CreateVertexBuffer(_vertexDeclaration.GetVertexSize(0), numVertices, HardwareBuffer.Usage.HBU_STATIC_WRITE_ONLY, false);
unsafe
{
fixed(ushort *x = indices)
_ib.WriteData(0, numIndices * sizeof(ushort), x, true);
fixed(short *x = vertices)
_vb.WriteData(0, numVertices * sizeof(ushort), x, true);
}
var binding = new VertexBufferBinding();
binding.SetBinding(0, _vb);
VertexData = new VertexData(_vertexDeclaration, binding);
VertexData.vertexCount = numVertices;
VertexData.vertexStart = 0;
IndexData = new IndexData();
IndexData.indexBuffer = _ib;
IndexData.indexCount = numIndices;
IndexData.indexStart = 0;
}
/// <summary>
/// Convert Obj Model File to Ogre Mesh format
/// </summary>
/// <param name="fileStream">Obj File Stream</param>
/// <returns>Ogre Mesh</returns>
public MeshPtr ConvertObjToMesh(Stream fileStream)
{
List <Vector3> vertexObj = new List <Vector3>();
List <Vector3> faceObj = new List <Vector3>();
float[] vertices;
float[] faces;
StreamReader reader = new StreamReader(fileStream);
string line;
Regex floatNumber = new Regex(@"[\d\-][\d\.]*");
Regex ushortNumber = new Regex(@"\d+");
MatchCollection matchList;
while ((line = reader.ReadLine()) != null)
{
//Read vertices
if (line.Substring(0, 2) == "v ")
{
matchList = floatNumber.Matches(line);
float x = Convert.ToSingle(matchList[0].ToString());
float y = Convert.ToSingle(matchList[1].ToString());
float z = Convert.ToSingle(matchList[2].ToString());
vertexObj.Add(new Vector3(x, y, z));
}
//Read faces
else if (line.Substring(0, 2) == "f ")
{
//Error here where invalid indices were given. This is because the OBJ file started indexing the verts from 1 instead of 0.
matchList = ushortNumber.Matches(line);
int v1 = -1 + Convert.ToUInt16(matchList[0].ToString());
int v2 = -1 + Convert.ToUInt16(matchList[1].ToString());
int v3 = -1 + Convert.ToUInt16(matchList[2].ToString());
faceObj.Add(new Vector3((ushort)v1, (ushort)v2, (ushort)v3));
}
}
int vertexNum = vertexObj.Count;
vertices = new float[vertexNum * 3];
for (int i = 0; i < vertexNum; i++)
{
vertices[i * 3 + 0] = vertexObj[i].x;
vertices[i * 3 + 1] = vertexObj[i].y;
vertices[i * 3 + 2] = vertexObj[i].z;
}
int faceNum = faceObj.Count;
faces = new float[faceNum * 3];
for (int i = 0; i < faceNum; i++)
{
faces[i * 3 + 0] = faceObj[i].x;
faces[i * 3 + 1] = faceObj[i].y;
faces[i * 3 + 2] = faceObj[i].z;
}
MeshPtr mesh = MeshManager.Singleton.CreateManual("mesh1", ResourceGroupManager.DEFAULT_RESOURCE_GROUP_NAME);
SubMesh subMesh = mesh.CreateSubMesh();
mesh.sharedVertexData = new VertexData();
mesh.sharedVertexData.vertexCount = (uint)vertexObj.Count;
VertexDeclaration vdecl = mesh.sharedVertexData.vertexDeclaration;
VertexBufferBinding vbind = mesh.sharedVertexData.vertexBufferBinding;
vdecl.AddElement(0, 0, VertexElementType.VET_FLOAT3, VertexElementSemantic.VES_POSITION);
HardwareVertexBufferSharedPtr vertexBuff =
HardwareBufferManager.Singleton.CreateVertexBuffer((uint)(3 * System.Runtime.InteropServices.Marshal.SizeOf(typeof(float))), (uint)vertexObj.Count, HardwareBuffer.Usage.HBU_DYNAMIC_WRITE_ONLY_DISCARDABLE);
unsafe
{
GCHandle handle = GCHandle.Alloc(vertices, GCHandleType.Pinned);
void * pVertex = (void *)handle.AddrOfPinnedObject();
vertexBuff.WriteData(0, vertexBuff.SizeInBytes, pVertex, true);
handle.Free();
vbind.SetBinding(0, vertexBuff);
}
HardwareIndexBufferSharedPtr indexBuff =
HardwareBufferManager.Singleton.CreateIndexBuffer(HardwareIndexBuffer.IndexType.IT_32BIT, (uint)(3 * faceObj.Count), HardwareBuffer.Usage.HBU_STATIC, true);
unsafe {
GCHandle handle = GCHandle.Alloc(faces, GCHandleType.Pinned);
void * pFaces = (void *)handle.AddrOfPinnedObject();
indexBuff.WriteData(0, indexBuff.SizeInBytes, pFaces, true);
handle.Free();
}
subMesh.useSharedVertices = true;
subMesh.indexData.indexBuffer = indexBuff;
subMesh.indexData.indexStart = 0;
subMesh.indexData.indexCount = (uint)(3 * faceObj.Count);
mesh._setBounds(new AxisAlignedBox(-100, -100, -100, 100, 100, 100));
mesh.Touch();
reader.Close();
return(mesh);
}
private void CreateBuffers(ushort[] indices, short[] vertices)
{
var numIndices = (uint)indices.Length;
var numVertices = (uint)vertices.Length;
_vertexDeclaration = HardwareBufferManager.Singleton.CreateVertexDeclaration();
_vertexDeclaration.AddElement(0, 0, VertexElementType.VET_SHORT2, VertexElementSemantic.VES_POSITION);
_ib = HardwareBufferManager.Singleton.CreateIndexBuffer(HardwareIndexBuffer.IndexType.IT_16BIT, numIndices, HardwareBuffer.Usage.HBU_STATIC_WRITE_ONLY);
_vb = HardwareBufferManager.Singleton.CreateVertexBuffer(_vertexDeclaration.GetVertexSize(0), numVertices, HardwareBuffer.Usage.HBU_STATIC_WRITE_ONLY, false);
unsafe
{
fixed (ushort* x = indices)
_ib.WriteData(0, numIndices * sizeof(ushort), x, true);
fixed (short* x = vertices)
_vb.WriteData(0, numVertices * sizeof(ushort), x, true);
}
var binding = new VertexBufferBinding();
binding.SetBinding(0, _vb);
VertexData = new VertexData(_vertexDeclaration, binding);
VertexData.vertexCount = numVertices;
VertexData.vertexStart = 0;
IndexData = new IndexData();
IndexData.indexBuffer = _ib;
IndexData.indexCount = numIndices;
IndexData.indexStart = 0;
}
/// <summary>
///
/// </summary>
private unsafe void CreateGeometry()
{
int numVertices = this.Steps * this.Circles + 1;
int numEule = 6 * this.Steps * (this.Circles - 1) + 3 * this.Steps;
// Vertex buffers
this.SubMesh.vertexData = new VertexData();
this.SubMesh.vertexData.vertexStart = 0;
this.SubMesh.vertexData.vertexCount = (uint)numVertices;
VertexDeclaration vdecl = this.SubMesh.vertexData.vertexDeclaration;
VertexBufferBinding vbind = this.SubMesh.vertexData.vertexBufferBinding;
uint offset = 0;
vdecl.AddElement(0, offset, VertexElementType.VET_FLOAT3, VertexElementSemantic.VES_POSITION);
offset += VertexElement.GetTypeSize(VertexElementType.VET_FLOAT3);
vdecl.AddElement(0, offset, VertexElementType.VET_FLOAT3, VertexElementSemantic.VES_TEXTURE_COORDINATES, 0);
offset += VertexElement.GetTypeSize(VertexElementType.VET_FLOAT3);
vdecl.AddElement(0, offset, VertexElementType.VET_FLOAT2, VertexElementSemantic.VES_TEXTURE_COORDINATES, 1);
offset += VertexElement.GetTypeSize(VertexElementType.VET_FLOAT2);
vdecl.AddElement(0, offset, VertexElementType.VET_FLOAT1, VertexElementSemantic.VES_TEXTURE_COORDINATES, 2);
offset += VertexElement.GetTypeSize(VertexElementType.VET_FLOAT1);
_vertexBuffer = HardwareBufferManager.Singleton.CreateVertexBuffer(offset, (uint)numVertices, HardwareBuffer.Usage.HBU_DYNAMIC_WRITE_ONLY);
vbind.SetBinding(0, _vertexBuffer);
int[] indexBuffer = new int[numEule];
for (int k = 0; k < this.Steps; k++)
{
indexBuffer[k * 3] = 0;
indexBuffer[k * 3 + 1] = k + 1;
if (k != this.Steps - 1)
{
indexBuffer[k * 3 + 2] = k + 2;
}
else
{
indexBuffer[k * 3 + 2] = 1;
}
}
for (int y = 0; y < this.Circles - 1; y++)
{
for (int x = 0; x < this.Steps; x++)
{
int twoface = (y * this.Steps + x) * 6 + 3 * this.Steps;
int p0 = 1 + y * this.Steps + x;
int p1 = 1 + y * this.Steps + x + 1;
int p2 = 1 + (y + 1) * this.Steps + x;
int p3 = 1 + (y + 1) * this.Steps + x + 1;
if (x == this.Steps - 1)
{
p1 -= x + 1;
p3 -= x + 1;
}
// First triangle
indexBuffer[twoface + 2] = p0;
indexBuffer[twoface + 1] = p1;
indexBuffer[twoface + 0] = p2;
// Second triangle
indexBuffer[twoface + 5] = p1;
indexBuffer[twoface + 4] = p3;
indexBuffer[twoface + 3] = p2;
}
}
// Prepare buffer for indices
_indexBuffer = HardwareBufferManager.Singleton.CreateIndexBuffer(Mogre.HardwareIndexBuffer.IndexType.IT_32BIT, (uint)numEule, HardwareBuffer.Usage.HBU_STATIC, true);
//for(int z = 0; z < indexBuffer.Length;z++)
// LogManager.Singleton.Write("Index " + indexBuffer[z]);
fixed(int *addr = &indexBuffer[0])
{
_indexBuffer.WriteData(0, _indexBuffer.SizeInBytes, addr, true);
}
// Set index buffer for this submesh
this.SubMesh.indexData.indexBuffer = _indexBuffer;
this.SubMesh.indexData.indexStart = 0;
this.SubMesh.indexData.indexCount = (uint)numEule;
// Create our internal buffer for manipulations
_vertices = new PosUVVertex[1 + this.Steps * this.Circles];
}
public unsafe void createMesh()
{
/// Create the mesh via the MeshManager
MeshPtr msh = MeshManager.Singleton.CreateManual("ColourCube", "General");
/// Create one submesh
SubMesh sub = msh.CreateSubMesh();
/// Define the vertices (8 vertices, each consisting of 2 groups of 3 floats
//const int nVertices = 8;
//int row = recordno;
// int col = demcol;
int row = recordno;
int col = 1100;
int step = 10;
int vbufCount;
uint nVertices = (uint)(col * row);
float[] vertices = CreateVertices(row, col, step, out vbufCount);
/// Define 12 triangles (two triangles per cube face)
/// The values in this table refer to vertices in the above table
uint ibufCount;
ushort[] faces = CreateFaces(row, col, out ibufCount);
/// Create vertex data structure for 8 vertices shared between submeshes
msh.sharedVertexData = new VertexData();
msh.sharedVertexData.vertexCount = nVertices;
/// Create declaration (memory format) of vertex data
VertexDeclaration decl = msh.sharedVertexData.vertexDeclaration;
uint offset = 0;
// 1st buffer
decl.AddElement(0, offset, VertexElementType.VET_FLOAT3, VertexElementSemantic.VES_POSITION);
offset += VertexElement.GetTypeSize(VertexElementType.VET_FLOAT3);
decl.AddElement(0, offset, VertexElementType.VET_FLOAT2, VertexElementSemantic.VES_TEXTURE_COORDINATES);
offset += VertexElement.GetTypeSize(VertexElementType.VET_FLOAT2);
/// Allocate vertex buffer of the requested number of vertices (vertexCount)
/// and bytes per vertex (offset)
HardwareVertexBufferSharedPtr vbuf =
HardwareBufferManager.Singleton.CreateVertexBuffer(offset, msh.sharedVertexData.vertexCount,
HardwareBuffer.Usage.HBU_STATIC_WRITE_ONLY);
/// Upload the vertex data to the card
fixed(void *p = vertices)
{
vbuf.WriteData(0, vbuf.SizeInBytes, p, true);// writeData(0, vbuf->getSizeInBytes(), vertices, true);
}
/// Set vertex buffer binding so buffer 0 is bound to our vertex buffer
VertexBufferBinding bind = msh.sharedVertexData.vertexBufferBinding;// msh->sharedVertexData->vertexBufferBinding;
bind.SetBinding(0, vbuf);
/// Allocate index buffer of the requested number of vertices (ibufCount)
HardwareIndexBufferSharedPtr ibuf =
HardwareBufferManager.Singleton.CreateIndexBuffer(HardwareIndexBuffer.IndexType.IT_16BIT,
ibufCount, HardwareBuffer.Usage.HBU_STATIC_WRITE_ONLY);
/// Upload the index data to the card
fixed(void *p = faces)
{
ibuf.WriteData(0, ibuf.SizeInBytes, p, true);
}
/// Set parameters of the submesh
sub.useSharedVertices = true;
sub.indexData.indexBuffer = ibuf;
sub.indexData.indexCount = ibufCount;
sub.indexData.indexStart = 0;
/// Set bounding information (for culling)
msh._setBounds(new AxisAlignedBox(min, max));
// msh._setBoundingSphereRadius(Mogre.Math.Sqrt(3 * 100 * 100));
/// Notify Mesh object that it has been loaded
msh.Load();
}
/// <summary>
///
/// </summary>
private unsafe void CreateGeometry()
{
// Vertex buffers
_subMesh.vertexData = new VertexData();
_subMesh.vertexData.vertexStart = 0;
_subMesh.vertexData.vertexCount = (uint)_vertexCount;
VertexDeclaration vdecl = _subMesh.vertexData.vertexDeclaration;
VertexBufferBinding vbind = _subMesh.vertexData.vertexBufferBinding;
uint offset = 0;
// Position
vdecl.AddElement(0, offset, VertexElementType.VET_FLOAT3, VertexElementSemantic.VES_POSITION);
offset += VertexElement.GetTypeSize(VertexElementType.VET_FLOAT3);
// 3D coords
vdecl.AddElement(0, offset, VertexElementType.VET_FLOAT3, VertexElementSemantic.VES_TEXTURE_COORDINATES, 0);
offset += VertexElement.GetTypeSize(VertexElementType.VET_FLOAT3);
// Noise coords
vdecl.AddElement(0, offset, VertexElementType.VET_FLOAT2, VertexElementSemantic.VES_TEXTURE_COORDINATES, 1);
offset += VertexElement.GetTypeSize(VertexElementType.VET_FLOAT2);
// Opacity
vdecl.AddElement(0, offset, VertexElementType.VET_FLOAT1, VertexElementSemantic.VES_TEXTURE_COORDINATES, 2);
offset += VertexElement.GetTypeSize(VertexElementType.VET_FLOAT1);
_vertexBuffer = HardwareBufferManager.Singleton.CreateVertexBuffer(
offset, (uint)_vertexCount,
HardwareBuffer.Usage.HBU_DYNAMIC_WRITE_ONLY);
vbind.SetBinding(0, _vertexBuffer);
int[] indexbuffer = new int[_numberOfTriangles * 3];
int IndexOffset = 0;
int VertexOffset = 0;
// C
for (int k = 0; k < _nc; k++)
{
// First triangle
indexbuffer[IndexOffset] = VertexOffset;
indexbuffer[IndexOffset + 1] = VertexOffset + 1;
indexbuffer[IndexOffset + 2] = VertexOffset + 3;
// Second triangle
indexbuffer[IndexOffset + 3] = VertexOffset;
indexbuffer[IndexOffset + 4] = VertexOffset + 3;
indexbuffer[IndexOffset + 5] = VertexOffset + 2;
IndexOffset += 6;
VertexOffset += 4;
}
// B
for (int k = 0; k < _nb; k++)
{
// First triangle
indexbuffer[IndexOffset] = VertexOffset;
indexbuffer[IndexOffset + 1] = VertexOffset + 1;
indexbuffer[IndexOffset + 2] = VertexOffset + 3;
// Second triangle
indexbuffer[IndexOffset + 3] = VertexOffset;
indexbuffer[IndexOffset + 4] = VertexOffset + 3;
indexbuffer[IndexOffset + 5] = VertexOffset + 2;
// Third triangle
indexbuffer[IndexOffset + 6] = VertexOffset + 2;
indexbuffer[IndexOffset + 7] = VertexOffset + 3;
indexbuffer[IndexOffset + 8] = VertexOffset + 5;
// Fourth triangle
indexbuffer[IndexOffset + 9] = VertexOffset + 2;
indexbuffer[IndexOffset + 10] = VertexOffset + 5;
indexbuffer[IndexOffset + 11] = VertexOffset + 4;
IndexOffset += 12;
VertexOffset += 6;
}
// A
for (int k = 0; k < _na; k++)
{
// First triangle
indexbuffer[IndexOffset] = VertexOffset;
indexbuffer[IndexOffset + 1] = VertexOffset + 1;
indexbuffer[IndexOffset + 2] = VertexOffset + 3;
// Second triangle
indexbuffer[IndexOffset + 3] = VertexOffset;
indexbuffer[IndexOffset + 4] = VertexOffset + 3;
indexbuffer[IndexOffset + 5] = VertexOffset + 2;
// Third triangle
indexbuffer[IndexOffset + 6] = VertexOffset + 2;
indexbuffer[IndexOffset + 7] = VertexOffset + 3;
indexbuffer[IndexOffset + 8] = VertexOffset + 5;
// Fourth triangle
indexbuffer[IndexOffset + 9] = VertexOffset + 2;
indexbuffer[IndexOffset + 10] = VertexOffset + 5;
indexbuffer[IndexOffset + 11] = VertexOffset + 4;
// Fifth triangle
indexbuffer[IndexOffset + 12] = VertexOffset + 4;
indexbuffer[IndexOffset + 13] = VertexOffset + 5;
indexbuffer[IndexOffset + 14] = VertexOffset + 6;
IndexOffset += 15;
VertexOffset += 7;
}
// Prepare buffer for indices
_indexBuffer =
HardwareBufferManager.Singleton.CreateIndexBuffer(Mogre.HardwareIndexBuffer.IndexType.IT_32BIT,
(uint)_numberOfTriangles * 3, HardwareBuffer.Usage.HBU_STATIC, true);
fixed(int *addr = &indexbuffer[0])
{
_indexBuffer.WriteData(
0, _indexBuffer.SizeInBytes, addr, true);
}
//indexbufferArr = null;
// Set index buffer for this submesh
_subMesh.indexData.indexBuffer = _indexBuffer;
_subMesh.indexData.indexStart = 0;
_subMesh.indexData.indexCount = (uint)_numberOfTriangles * 3;
// Create our internal buffer for manipulations
_vertices = new Vertex[_vertexCount];
// Update geometry
UpdateGeometry();
}
private unsafe void createCube(string name, Mogre.Vector3 gpose, double d)
{
MeshPtr msh = MeshManager.Singleton.CreateManual(name, "General");
SubMesh sub1 = msh.CreateSubMesh("1");
const float sqrt13 = 0.577350269f; /* sqrt(1/3) */
const int nVertices = 8;
const int vbufCount = 3 * 2 * nVertices;
float[] vertices = new float[vbufCount] {
(float)(gpose.x - d / 2), (float)(gpose.y + d / 2), (float)(gpose.z - d / 2), //0 position
-sqrt13, sqrt13, -sqrt13, //0 normal A
(float)(gpose.x + d / 2), (float)(gpose.y + d / 2), (float)(gpose.z - d / 2), //1 position
sqrt13, sqrt13, -sqrt13, //1 normal B
(float)(gpose.x + d / 2), (float)(gpose.y - d / 2), (float)(gpose.z - d / 2), //2 position
sqrt13, -sqrt13, -sqrt13, //2 normal F
(float)(gpose.x - d / 2), (float)(gpose.y - d / 2), (float)(gpose.z - d / 2), //3 position
-sqrt13, -sqrt13, -sqrt13, //3 normal H
(float)(gpose.x - d / 2), (float)(gpose.y + d / 2), (float)(gpose.z + d / 2),
-sqrt13, sqrt13, sqrt13, //4 normal C
(float)(gpose.x + d / 2), (float)(gpose.y + d / 2), (float)(gpose.z + d / 2),
sqrt13, sqrt13, sqrt13, //5 normal D
(float)(gpose.x + d / 2), (float)(gpose.y - d / 2), (float)(gpose.z + d / 2),
sqrt13, -sqrt13, sqrt13, //6 normal E
(float)(gpose.x - d / 2), (float)(gpose.y - d / 2), (float)(gpose.z + d / 2),
-sqrt13, -sqrt13, sqrt13, //7 normal G
};
const int ibufCount = 36;
ushort[] faces = new ushort[ibufCount] {
//back
0, 2, 3,
0, 1, 2,
//right
1, 6, 2,
1, 5, 6,
//front
4, 6, 5,
4, 7, 6,
//left
0, 7, 4,
0, 3, 7,
//top
0, 5, 1,
0, 4, 5,
//bottom
2, 7, 3,
2, 6, 7
};
sub1.vertexData = new VertexData();
sub1.vertexData.vertexCount = nVertices;
VertexDeclaration decl = sub1.vertexData.vertexDeclaration;
uint offset = 0;
//position
decl.AddElement(0, offset, VertexElementType.VET_FLOAT3, VertexElementSemantic.VES_POSITION);
offset += VertexElement.GetTypeSize(VertexElementType.VET_FLOAT3);
//normal
decl.AddElement(0, offset, VertexElementType.VET_FLOAT3, VertexElementSemantic.VES_NORMAL);
offset += VertexElement.GetTypeSize(VertexElementType.VET_FLOAT3);
HardwareVertexBufferSharedPtr vbuf = HardwareBufferManager.Singleton.CreateVertexBuffer(offset, sub1.vertexData.vertexCount, HardwareBuffer.Usage.HBU_STATIC_WRITE_ONLY);
VertexBufferBinding bind = sub1.vertexData.vertexBufferBinding;
void *pVertices;
fixed(float *pFVertice = vertices)
{
pVertices = (void *)pFVertice;
}
vbuf.WriteData(0, vbuf.SizeInBytes, pVertices, true);
bind.SetBinding(0, vbuf);
void *pFaces;
fixed(ushort *pUFaces = faces)
{
pFaces = (void *)pUFaces;
}
HardwareIndexBufferSharedPtr ibuf = HardwareBufferManager.Singleton.CreateIndexBuffer(HardwareIndexBuffer.IndexType.IT_16BIT, ibufCount, HardwareBuffer.Usage.HBU_STATIC_WRITE_ONLY);
ibuf.WriteData(0, ibuf.SizeInBytes, pFaces, true);
sub1.useSharedVertices = false;
sub1.indexData.indexBuffer = ibuf;
sub1.indexData.indexCount = ibufCount;
sub1.indexData.indexStart = 0;
sub1.SetMaterialName("Examples/10PointBlock");
msh._setBounds(new AxisAlignedBox(-100, -100, -100, 100, 100, 100));
msh._setBoundingSphereRadius(Mogre.Math.Sqrt(3 * 100 * 100));
msh.Load();
}