public void Init( TerrainOptions options )
{
this.options = options;
this.numMipMaps = options.maxMipmap;
this.size = options.size;
this.terrain = new VertexData();
this.terrain.vertexStart = 0;
this.terrain.vertexCount = options.size*options.size;
VertexDeclaration decl = this.terrain.vertexDeclaration;
VertexBufferBinding binding = this.terrain.vertexBufferBinding;
int offset = 0;
// Position/Normal
decl.AddElement( POSITION, 0, VertexElementType.Float3, VertexElementSemantic.Position );
decl.AddElement( NORMAL, 0, VertexElementType.Float3, VertexElementSemantic.Normal );
// TexCoords
decl.AddElement( TEXCOORD, offset, VertexElementType.Float2, VertexElementSemantic.TexCoords, 0 );
offset += VertexElement.GetTypeSize( VertexElementType.Float2 );
decl.AddElement( TEXCOORD, offset, VertexElementType.Float2, VertexElementSemantic.TexCoords, 1 );
offset += VertexElement.GetTypeSize( VertexElementType.Float2 );
// TODO: Color
HardwareVertexBuffer buffer = HardwareBufferManager.Instance.CreateVertexBuffer( decl.Clone( POSITION ),
this.terrain.vertexCount,
BufferUsage.StaticWriteOnly, true );
binding.SetBinding( POSITION, buffer );
buffer = HardwareBufferManager.Instance.CreateVertexBuffer( decl.Clone( NORMAL ), this.terrain.vertexCount,
BufferUsage.StaticWriteOnly, true );
binding.SetBinding( NORMAL, buffer );
buffer = HardwareBufferManager.Instance.CreateVertexBuffer( decl.Clone( TEXCOORD ), this.terrain.vertexCount,
BufferUsage.StaticWriteOnly, true );
binding.SetBinding( TEXCOORD, buffer );
this.minLevelDistSqr = new float[this.numMipMaps];
int endx = options.startx + options.size;
int endz = options.startz + options.size;
// TODO: name buffers different so we can unlock
HardwareVertexBuffer posBuffer = binding.GetBuffer( POSITION );
var pos = posBuffer.Lock( BufferLocking.Discard );
HardwareVertexBuffer texBuffer = binding.GetBuffer( TEXCOORD );
var tex = texBuffer.Lock( BufferLocking.Discard );
float min = 99999999, max = 0;
#if !AXIOM_SAFE_ONLY
unsafe
#endif
{
var posPtr = pos.ToFloatPointer();
var texPtr = tex.ToFloatPointer();
int posCount = 0;
int texCount = 0;
for ( int j = options.startz; j < endz; j++ )
{
for ( int i = options.startx; i < endx; i++ )
{
float height = options.GetWorldHeight( i, j )*options.scaley;
posPtr[ posCount++ ] = i*options.scalex;
posPtr[ posCount++ ] = height;
posPtr[ posCount++ ] = j*options.scalez;
texPtr[ texCount++ ] = (float)i/options.worldSize;
texPtr[ texCount++ ] = (float)j/options.worldSize;
texPtr[ texCount++ ] = ( (float)i/options.size )*options.detailTile;
texPtr[ texCount++ ] = ( (float)j/options.size )*options.detailTile;
if ( height < min )
{
min = height;
}
if ( height > max )
{
max = height;
}
} // for i
} // for j
} // unsafe
// unlock the buffers
posBuffer.Unlock();
texBuffer.Unlock();
this.box.SetExtents( new Vector3( options.startx*options.scalex, min, options.startz*options.scalez ),
new Vector3( ( endx - 1 )*options.scalex, max, ( endz - 1 )*options.scalez ) );
this.center = new Vector3( ( options.startx*options.scalex + endx - 1 )/2, ( min + max )/2,
( options.startz*options.scalez + endz - 1 )/2 );
float C = CalculateCFactor();
CalculateMinLevelDist2( C );
}
public void Init(TerrainOptions options)
{
this.options = options;
numMipMaps = options.maxMipmap;
size = options.size;
terrain = new VertexData();
terrain.vertexStart = 0;
// Turbo: appended factor 3
// Not sure about that, but without that the terrain manager seems
// to mess up memory because of buffer overruns
//terrain.vertexCount = options.size * options.size;
terrain.vertexCount = options.size * options.size * 3;
VertexDeclaration decl = terrain.vertexDeclaration;
VertexBufferBinding binding = terrain.vertexBufferBinding;
int offset = 0;
// Position/Normal
decl.AddElement(POSITION, 0, VertexElementType.Float3, VertexElementSemantic.Position);
decl.AddElement(NORMAL, 0, VertexElementType.Float3, VertexElementSemantic.Normal);
// TexCoords
decl.AddElement(TEXCOORD, offset, VertexElementType.Float2, VertexElementSemantic.TexCoords, 0);
offset += VertexElement.GetTypeSize(VertexElementType.Float2);
decl.AddElement(TEXCOORD, offset, VertexElementType.Float2, VertexElementSemantic.TexCoords, 1);
offset += VertexElement.GetTypeSize(VertexElementType.Float2);
// TODO: Color
HardwareVertexBuffer buffer =
HardwareBufferManager.Instance.CreateVertexBuffer(
decl.GetVertexSize(POSITION),
terrain.vertexCount,
BufferUsage.StaticWriteOnly, true);
binding.SetBinding(POSITION, buffer);
buffer =
HardwareBufferManager.Instance.CreateVertexBuffer(
decl.GetVertexSize(NORMAL),
terrain.vertexCount,
BufferUsage.StaticWriteOnly, true);
binding.SetBinding(NORMAL, buffer);
buffer =
HardwareBufferManager.Instance.CreateVertexBuffer(
offset,
terrain.vertexCount,
BufferUsage.StaticWriteOnly, true);
binding.SetBinding(TEXCOORD, buffer);
minLevelDistSqr = new float[numMipMaps];
int endx = options.startx + options.size;
int endz = options.startz + options.size;
// TODO: name buffers different so we can unlock
HardwareVertexBuffer posBuffer = binding.GetBuffer(POSITION);
IntPtr pos = posBuffer.Lock(BufferLocking.Discard);
HardwareVertexBuffer texBuffer = binding.GetBuffer(TEXCOORD);
IntPtr tex = texBuffer.Lock(BufferLocking.Discard);
float min = 99999999, max = 0;
unsafe {
float *posPtr = (float *)pos.ToPointer();
float *texPtr = (float *)tex.ToPointer();
int posCount = 0;
int texCount = 0;
for (int j = options.startz; j < endz; j++)
{
for (int i = options.startx; i < endx; i++)
{
float height = options.GetWorldHeight(i, j) * options.scaley;
posPtr[posCount++] = (float)i * options.scalex;
posPtr[posCount++] = height;
posPtr[posCount++] = (float)j * options.scalez;
texPtr[texCount++] = (float)i / (float)options.worldSize;
texPtr[texCount++] = (float)j / (float)options.worldSize;
texPtr[texCount++] = ((float)i / (float)options.size) * (float)options.detailTile;
texPtr[texCount++] = ((float)j / (float)options.size) * (float)options.detailTile;
if (height < min)
{
min = height;
}
if (height > max)
{
max = height;
}
} // for i
} // for j
} // unsafe
// unlock the buffers
posBuffer.Unlock();
texBuffer.Unlock();
box.SetExtents(
new Vector3((float)options.startx * options.scalex, min, (float)options.startz * options.scalez),
new Vector3((float)(endx - 1) * options.scalex, max, (float)(endz - 1) * options.scalez));
center = new Vector3((options.startx * options.scalex + endx - 1) / 2,
(min + max) / 2,
(options.startz * options.scalez + endz - 1) / 2);
float C = CalculateCFactor();
CalculateMinLevelDist2(C);
}
public override void LoadWorldGeometry(string fileName)
{
var serializer = new XmlSerializer(typeof(TerrainOptions));
this.options = (TerrainOptions)serializer.Deserialize(ResourceGroupManager.Instance.OpenResource(fileName));
this.scale = new Vector3(this.options.scalex, this.options.scaley, this.options.scalez);
this.tileSize = this.options.size;
// load the heightmap
{
Image image = Image.FromStream(ResourceGroupManager.Instance.OpenResource(this.options.Terrain),
this.options.Terrain.Split('.')[1]);
worldSize = this.options.worldSize = image.Width;
var dest = new Real[(int)worldSize * (int)worldSize];
byte[] src = image.Data;
Real invScale;
//if ( image.Format != PixelFormat.L8 && image.Format != PixelFormat.L16 )
// throw new AxiomException( "Heightmap is not a grey scale image!" );
bool is16bit = (image.Format == PixelFormat.L16);
// Determine mapping from fixed to floating
ulong rowSize;
if (is16bit)
{
invScale = 1.0f / 65535.0f;
rowSize = (ulong)worldSize * 2;
}
else
{
invScale = 1.0f; // / 255.0f;
rowSize = (ulong)worldSize;
}
// Read the data
int srcIndex = 0;
int dstIndex = 0;
for (ulong j = 0; j < (ulong)worldSize; ++j)
{
for (ulong i = 0; i < (ulong)worldSize; ++i)
{
if (is16bit)
{
#if AXIOM_BIG_ENDIAN
ushort val = (ushort)(src[srcIndex++] << 8);
val += src[srcIndex++];
#else
ushort val = src[srcIndex++];
val += (ushort)(src[srcIndex++] << 8);
#endif
dest[dstIndex++] = new Real(val) * invScale;
}
else
{
dest[dstIndex++] = new Real(src[srcIndex++]); // *invScale;
#if (XBOX || XBOX360)
srcIndex += 3;
#endif
}
}
}
// get the data from the heightmap
this.options.data = dest;
}
float maxx = this.options.scalex * this.options.worldSize;
float maxy = 255 * this.options.scaley;
float maxz = this.options.scalez * this.options.worldSize;
Resize(new AxisAlignedBox(Vector3.Zero, new Vector3(maxx, maxy, maxz)));
this.terrainMaterial =
(Material)
(MaterialManager.Instance.CreateOrRetrieve(
!String.IsNullOrEmpty(this.options.MaterialName) ? this.options.MaterialName : "Terrain",
ResourceGroupManager.Instance.WorldResourceGroupName).First);
if (this.options.WorldTexture != "")
{
this.terrainMaterial.GetTechnique(0).GetPass(0).CreateTextureUnitState(this.options.WorldTexture, 0);
}
if (this.options.DetailTexture != "")
{
this.terrainMaterial.GetTechnique(0).GetPass(0).CreateTextureUnitState(this.options.DetailTexture, 1);
}
this.terrainMaterial.Lighting = this.options.isLit;
this.terrainMaterial.Load();
this.terrainRoot = (SceneNode)RootSceneNode.CreateChild("TerrainRoot");
this.numTiles = (this.options.worldSize - 1) / (this.options.size - 1);
this.tiles = new TerrainRenderable[this.numTiles, this.numTiles];
int p = 0, q = 0;
for (int j = 0; j < this.options.worldSize - 1; j += (this.options.size - 1))
{
p = 0;
for (int i = 0; i < this.options.worldSize - 1; i += (this.options.size - 1))
{
this.options.startx = i;
this.options.startz = j;
string name = string.Format("Tile[{0},{1}]", p, q);
var node = (SceneNode)this.terrainRoot.CreateChild(name);
var tile = new TerrainRenderable();
tile.Name = name;
tile.RenderQueueGroup = WorldGeometryRenderQueueId;
tile.SetMaterial(this.terrainMaterial);
tile.Init(this.options);
this.tiles[p, q] = tile;
node.AttachObject(tile);
p++;
}
q++;
}
int size1 = this.tiles.GetLength(0);
int size2 = this.tiles.GetLength(1);
for (int j = 0; j < size1; j++)
{
for (int i = 0; i < size2; i++)
{
if (j != size1 - 1)
{
this.tiles[i, j].SetNeighbor(Neighbor.South, this.tiles[i, j + 1]);
this.tiles[i, j + 1].SetNeighbor(Neighbor.North, this.tiles[i, j]);
}
if (i != size2 - 1)
{
this.tiles[i, j].SetNeighbor(Neighbor.East, this.tiles[i + 1, j]);
this.tiles[i + 1, j].SetNeighbor(Neighbor.West, this.tiles[i, j]);
}
}
}
if (this.options.isLit)
{
for (int j = 0; j < size1; j++)
{
for (int i = 0; i < size2; i++)
{
this.tiles[i, j].CalculateNormals();
}
}
}
}
public override void LoadWorldGeometry( string fileName )
{
var serializer = new XmlSerializer( typeof ( TerrainOptions ) );
this.options = (TerrainOptions)serializer.Deserialize( ResourceGroupManager.Instance.OpenResource( fileName ) );
this.scale = new Vector3( this.options.scalex, this.options.scaley, this.options.scalez );
this.tileSize = this.options.size;
// load the heightmap
{
Image image = Image.FromStream( ResourceGroupManager.Instance.OpenResource( this.options.Terrain ),
this.options.Terrain.Split( '.' )[ 1 ] );
worldSize = this.options.worldSize = image.Width;
var dest = new Real[(int)worldSize*(int)worldSize];
byte[] src = image.Data;
Real invScale;
//if ( image.Format != PixelFormat.L8 && image.Format != PixelFormat.L16 )
// throw new AxiomException( "Heightmap is not a grey scale image!" );
bool is16bit = ( image.Format == PixelFormat.L16 );
// Determine mapping from fixed to floating
ulong rowSize;
if ( is16bit )
{
invScale = 1.0f/65535.0f;
rowSize = (ulong)worldSize*2;
}
else
{
invScale = 1.0f; // / 255.0f;
rowSize = (ulong)worldSize;
}
// Read the data
int srcIndex = 0;
int dstIndex = 0;
for ( ulong j = 0; j < (ulong)worldSize; ++j )
{
for ( ulong i = 0; i < (ulong)worldSize; ++i )
{
if ( is16bit )
{
#if AXIOM_BIG_ENDIAN
ushort val = (ushort)(src[srcIndex++] << 8);
val += src[srcIndex++];
#else
ushort val = src[ srcIndex++ ];
val += (ushort)( src[ srcIndex++ ] << 8 );
#endif
dest[ dstIndex++ ] = new Real( val )*invScale;
}
else
{
dest[ dstIndex++ ] = new Real( src[ srcIndex++ ] ); // *invScale;
#if (XBOX || XBOX360 )
srcIndex += 3;
#endif
}
}
}
// get the data from the heightmap
this.options.data = dest;
}
float maxx = this.options.scalex*this.options.worldSize;
float maxy = 255*this.options.scaley;
float maxz = this.options.scalez*this.options.worldSize;
Resize( new AxisAlignedBox( Vector3.Zero, new Vector3( maxx, maxy, maxz ) ) );
this.terrainMaterial =
(Material)
( MaterialManager.Instance.CreateOrRetrieve(
!String.IsNullOrEmpty( this.options.MaterialName ) ? this.options.MaterialName : "Terrain",
ResourceGroupManager.Instance.WorldResourceGroupName ).First );
if ( this.options.WorldTexture != "" )
{
this.terrainMaterial.GetTechnique( 0 ).GetPass( 0 ).CreateTextureUnitState( this.options.WorldTexture, 0 );
}
if ( this.options.DetailTexture != "" )
{
this.terrainMaterial.GetTechnique( 0 ).GetPass( 0 ).CreateTextureUnitState( this.options.DetailTexture, 1 );
}
this.terrainMaterial.Lighting = this.options.isLit;
this.terrainMaterial.Load();
this.terrainRoot = (SceneNode)RootSceneNode.CreateChild( "TerrainRoot" );
this.numTiles = ( this.options.worldSize - 1 )/( this.options.size - 1 );
this.tiles = new TerrainRenderable[this.numTiles,this.numTiles];
int p = 0, q = 0;
for ( int j = 0; j < this.options.worldSize - 1; j += ( this.options.size - 1 ) )
{
p = 0;
for ( int i = 0; i < this.options.worldSize - 1; i += ( this.options.size - 1 ) )
{
this.options.startx = i;
this.options.startz = j;
string name = string.Format( "Tile[{0},{1}]", p, q );
var node = (SceneNode)this.terrainRoot.CreateChild( name );
var tile = new TerrainRenderable();
tile.Name = name;
tile.RenderQueueGroup = WorldGeometryRenderQueueId;
tile.SetMaterial( this.terrainMaterial );
tile.Init( this.options );
this.tiles[ p, q ] = tile;
node.AttachObject( tile );
p++;
}
q++;
}
int size1 = this.tiles.GetLength( 0 );
int size2 = this.tiles.GetLength( 1 );
for ( int j = 0; j < size1; j++ )
{
for ( int i = 0; i < size2; i++ )
{
if ( j != size1 - 1 )
{
this.tiles[ i, j ].SetNeighbor( Neighbor.South, this.tiles[ i, j + 1 ] );
this.tiles[ i, j + 1 ].SetNeighbor( Neighbor.North, this.tiles[ i, j ] );
}
if ( i != size2 - 1 )
{
this.tiles[ i, j ].SetNeighbor( Neighbor.East, this.tiles[ i + 1, j ] );
this.tiles[ i + 1, j ].SetNeighbor( Neighbor.West, this.tiles[ i, j ] );
}
}
}
if ( this.options.isLit )
{
for ( int j = 0; j < size1; j++ )
{
for ( int i = 0; i < size2; i++ )
{
this.tiles[ i, j ].CalculateNormals();
}
}
}
}
public override void LoadWorldGeometry(string fileName)
{
TerrainOptions options = new TerrainOptions();
DataSet optionData = new DataSet();
optionData.ReadXml(fileName);
DataTable table = optionData.Tables[0];
DataRow row = table.Rows[0];
string terrainFileName = "";
string detailTexture = "";
string worldTexture = "";
if (table.Columns["Terrain"] != null)
{
terrainFileName = (string)row["Terrain"];
}
if (table.Columns["DetailTexture"] != null)
{
detailTexture = (string)row["DetailTexture"];
}
if (table.Columns["WorldTexture"] != null)
{
worldTexture = (string)row["WorldTexture"];
}
if (table.Columns["MaxMipMapLevel"] != null)
{
options.maxMipmap = Convert.ToInt32(row["MaxMipMapLevel"]);
}
if (table.Columns["DetailTile"] != null)
{
options.detailTile = Convert.ToInt32(row["DetailTile"]);
}
if (table.Columns["MaxPixelError"] != null)
{
options.maxPixelError = Convert.ToInt32(row["MaxPixelError"]);
}
if (table.Columns["TileSize"] != null)
{
options.size = Convert.ToInt32(row["TileSize"]);
}
if (table.Columns["ScaleX"] != null)
{
options.scalex = StringConverter.ParseFloat((string)row["ScaleX"]);
}
if (table.Columns["ScaleY"] != null)
{
options.scaley = StringConverter.ParseFloat((string)row["ScaleY"]);
}
if (table.Columns["ScaleZ"] != null)
{
options.scalez = StringConverter.ParseFloat((string)row["ScaleZ"]);
}
if (table.Columns["VertexNormals"] != null)
{
options.isLit = ((string)row["VertexNormals"]) == "yes" ? true : false;
}
scale = new Vector3(options.scalex, options.scaley, options.scalez);
tileSize = options.size;
// load the heightmap
Image image = Image.FromFile(terrainFileName);
// TODO: Check terrain size for 2^n + 1
// get the data from the heightmap
options.data = image.Data;
options.worldSize = image.Width;
float maxx = options.scalex * options.worldSize;
float maxy = 255 * options.scaley;
float maxz = options.scalez * options.worldSize;
Resize(new AxisAlignedBox(Vector3.Zero, new Vector3(maxx, maxy, maxz)));
terrainMaterial = CreateMaterial("Terrain");
if (worldTexture != "")
{
terrainMaterial.GetTechnique(0).GetPass(0).CreateTextureUnitState(worldTexture, 0);
}
if (detailTexture != "")
{
terrainMaterial.GetTechnique(0).GetPass(0).CreateTextureUnitState(detailTexture, 1);
}
terrainMaterial.Lighting = options.isLit;
terrainMaterial.Load();
terrainRoot = (SceneNode)RootSceneNode.CreateChild("TerrainRoot");
numTiles = (options.worldSize - 1) / (options.size - 1);
tiles = new TerrainRenderable[numTiles, numTiles];
int p = 0, q = 0;
for (int j = 0; j < options.worldSize - 1; j += (options.size - 1))
{
p = 0;
for (int i = 0; i < options.worldSize - 1; i += (options.size - 1))
{
options.startx = i;
options.startz = j;
string name = string.Format("Tile[{0},{1}]", p, q);
SceneNode node = (SceneNode)terrainRoot.CreateChild(name);
TerrainRenderable tile = new TerrainRenderable();
tile.Name = name;
tile.SetMaterial(terrainMaterial);
tile.Init(options);
tiles[p, q] = tile;
node.AttachObject(tile);
p++;
}
q++;
}
int size1 = tiles.GetLength(0);
int size2 = tiles.GetLength(1);
for (int j = 0; j < size1; j++)
{
for (int i = 0; i < size2; i++)
{
if (j != size1 - 1)
{
((TerrainRenderable)tiles[i, j]).SetNeighbor(Neighbor.South, (TerrainRenderable)tiles[i, j + 1]);
((TerrainRenderable)tiles[i, j + 1]).SetNeighbor(Neighbor.North, (TerrainRenderable)tiles[i, j]);
}
if (i != size2 - 1)
{
((TerrainRenderable)tiles[i, j]).SetNeighbor(Neighbor.East, (TerrainRenderable)tiles[i + 1, j]);
((TerrainRenderable)tiles[i + 1, j]).SetNeighbor(Neighbor.West, (TerrainRenderable)tiles[i, j]);
}
}
}
#if NOT_USED
if (false) // && options.isLit) //TODO: Fix
{
for (int j = 0; j < size1; j++)
{
for (int i = 0; i < size2; i++)
{
((TerrainRenderable)tiles[i, j]).CalculateNormals();
}
}
}
#endif
this.terrainOptions = options; //we need these later for GetHeightAt, so make them a member variable
}
public void Init(TerrainOptions options)
{
this.options = options;
this.numMipMaps = options.maxMipmap;
this.size = options.size;
this.terrain = new VertexData();
this.terrain.vertexStart = 0;
this.terrain.vertexCount = options.size * options.size;
VertexDeclaration decl = this.terrain.vertexDeclaration;
VertexBufferBinding binding = this.terrain.vertexBufferBinding;
int offset = 0;
// Position/Normal
decl.AddElement(POSITION, 0, VertexElementType.Float3, VertexElementSemantic.Position);
decl.AddElement(NORMAL, 0, VertexElementType.Float3, VertexElementSemantic.Normal);
// TexCoords
decl.AddElement(TEXCOORD, offset, VertexElementType.Float2, VertexElementSemantic.TexCoords, 0);
offset += VertexElement.GetTypeSize(VertexElementType.Float2);
decl.AddElement(TEXCOORD, offset, VertexElementType.Float2, VertexElementSemantic.TexCoords, 1);
offset += VertexElement.GetTypeSize(VertexElementType.Float2);
// TODO: Color
HardwareVertexBuffer buffer = HardwareBufferManager.Instance.CreateVertexBuffer(decl.Clone(POSITION),
this.terrain.vertexCount,
BufferUsage.StaticWriteOnly, true);
binding.SetBinding(POSITION, buffer);
buffer = HardwareBufferManager.Instance.CreateVertexBuffer(decl.Clone(NORMAL), this.terrain.vertexCount,
BufferUsage.StaticWriteOnly, true);
binding.SetBinding(NORMAL, buffer);
buffer = HardwareBufferManager.Instance.CreateVertexBuffer(decl.Clone(TEXCOORD), this.terrain.vertexCount,
BufferUsage.StaticWriteOnly, true);
binding.SetBinding(TEXCOORD, buffer);
this.minLevelDistSqr = new float[this.numMipMaps];
int endx = options.startx + options.size;
int endz = options.startz + options.size;
// TODO: name buffers different so we can unlock
HardwareVertexBuffer posBuffer = binding.GetBuffer(POSITION);
var pos = posBuffer.Lock(BufferLocking.Discard);
HardwareVertexBuffer texBuffer = binding.GetBuffer(TEXCOORD);
var tex = texBuffer.Lock(BufferLocking.Discard);
float min = 99999999, max = 0;
#if !AXIOM_SAFE_ONLY
unsafe
#endif
{
var posPtr = pos.ToFloatPointer();
var texPtr = tex.ToFloatPointer();
int posCount = 0;
int texCount = 0;
for (int j = options.startz; j < endz; j++)
{
for (int i = options.startx; i < endx; i++)
{
float height = options.GetWorldHeight(i, j) * options.scaley;
posPtr[posCount++] = i * options.scalex;
posPtr[posCount++] = height;
posPtr[posCount++] = j * options.scalez;
texPtr[texCount++] = (float)i / options.worldSize;
texPtr[texCount++] = (float)j / options.worldSize;
texPtr[texCount++] = ((float)i / options.size) * options.detailTile;
texPtr[texCount++] = ((float)j / options.size) * options.detailTile;
if (height < min)
{
min = height;
}
if (height > max)
{
max = height;
}
} // for i
} // for j
} // unsafe
// unlock the buffers
posBuffer.Unlock();
texBuffer.Unlock();
this.box.SetExtents(new Vector3(options.startx * options.scalex, min, options.startz * options.scalez),
new Vector3((endx - 1) * options.scalex, max, (endz - 1) * options.scalez));
this.center = new Vector3((options.startx * options.scalex + endx - 1) / 2, (min + max) / 2,
(options.startz * options.scalez + endz - 1) / 2);
float C = CalculateCFactor();
CalculateMinLevelDist2(C);
}
public override void LoadWorldGeometry(string fileName)
{
TerrainOptions options = new TerrainOptions();
DataSet optionData = new DataSet();
optionData.ReadXml(fileName);
DataTable table = optionData.Tables[0];
DataRow row = table.Rows[0];
string terrainFileName = "";
string detailTexture = "";
string worldTexture = "";
if(table.Columns["Terrain"] != null)
{
terrainFileName = (string)row["Terrain"];
}
if(table.Columns["DetailTexture"] != null)
{
detailTexture = (string)row["DetailTexture"];
}
if(table.Columns["WorldTexture"] != null)
{
worldTexture = (string)row["WorldTexture"];
}
if(table.Columns["MaxMipMapLevel"] != null)
{
options.maxMipmap = Convert.ToInt32(row["MaxMipMapLevel"]);
}
if(table.Columns["DetailTile"] != null)
{
options.detailTile = Convert.ToInt32(row["DetailTile"]);
}
if(table.Columns["MaxPixelError"] != null)
{
options.maxPixelError = Convert.ToInt32(row["MaxPixelError"]);
}
if(table.Columns["TileSize"] != null)
{
options.size = Convert.ToInt32(row["TileSize"]);
}
if(table.Columns["ScaleX"] != null)
{
options.scalex = StringConverter.ParseFloat((string)row["ScaleX"]);
}
if(table.Columns["ScaleY"] != null)
{
options.scaley = StringConverter.ParseFloat((string)row["ScaleY"]);
}
if(table.Columns["ScaleZ"] != null)
{
options.scalez = StringConverter.ParseFloat((string)row["ScaleZ"]);
}
if(table.Columns["VertexNormals"] != null)
{
options.isLit = ((string)row["VertexNormals"]) == "yes" ? true : false;
}
scale = new Vector3(options.scalex, options.scaley, options.scalez);
tileSize = options.size;
// load the heightmap
Image image = Image.FromFile(terrainFileName);
// TODO: Check terrain size for 2^n + 1
// get the data from the heightmap
options.data = image.Data;
options.worldSize = image.Width;
float maxx = options.scalex * options.worldSize;
float maxy = 255 * options.scaley;
float maxz = options.scalez * options.worldSize;
Resize(new AxisAlignedBox(Vector3.Zero, new Vector3(maxx, maxy, maxz)));
terrainMaterial = CreateMaterial("Terrain");
if(worldTexture != "")
{
terrainMaterial.GetTechnique(0).GetPass(0).CreateTextureUnitState(worldTexture, 0);
}
if(detailTexture != "")
{
terrainMaterial.GetTechnique(0).GetPass(0).CreateTextureUnitState(detailTexture, 1);
}
terrainMaterial.Lighting = options.isLit;
terrainMaterial.Load();
terrainRoot = (SceneNode)RootSceneNode.CreateChild("TerrainRoot");
numTiles = (options.worldSize - 1) / (options.size - 1);
tiles = new TerrainRenderable[numTiles, numTiles];
int p = 0, q = 0;
for(int j = 0; j < options.worldSize - 1; j += (options.size - 1))
{
p = 0;
for(int i = 0; i < options.worldSize - 1; i += (options.size - 1))
{
options.startx = i;
options.startz = j;
string name = string.Format("Tile[{0},{1}]", p, q);
SceneNode node = (SceneNode)terrainRoot.CreateChild(name);
TerrainRenderable tile = new TerrainRenderable();
tile.Name = name;
tile.SetMaterial(terrainMaterial);
tile.Init(options);
tiles[p,q] = tile;
node.AttachObject(tile);
p++;
}
q++;
}
int size1 = tiles.GetLength(0);
int size2 = tiles.GetLength(1);
for(int j = 0; j < size1; j++)
{
for(int i = 0; i < size2; i++)
{
if(j != size1 - 1)
{
((TerrainRenderable)tiles[i,j]).SetNeighbor(Neighbor.South, (TerrainRenderable)tiles[i, j + 1]);
((TerrainRenderable)tiles[i,j + 1]).SetNeighbor(Neighbor.North, (TerrainRenderable)tiles[i, j]);
}
if(i != size2 - 1)
{
((TerrainRenderable)tiles[i,j]).SetNeighbor(Neighbor.East, (TerrainRenderable)tiles[i + 1, j]);
((TerrainRenderable)tiles[i + 1,j]).SetNeighbor(Neighbor.West, (TerrainRenderable)tiles[i, j]);
}
}
}
#if NOT_USED
if(false) // && options.isLit) //TODO: Fix
{
for(int j = 0; j < size1; j++)
{
for(int i = 0; i < size2; i++)
{
((TerrainRenderable)tiles[i,j]).CalculateNormals();
}
}
}
#endif
this.terrainOptions = options; //we need these later for GetHeightAt, so make them a member variable
}
public void Init(TerrainOptions options)
{
this.options = options;
numMipMaps = options.maxMipmap;
size = options.size;
terrain = new VertexData();
terrain.vertexStart = 0;
// Turbo: appended factor 3
// Not sure about that, but without that the terrain manager seems
// to mess up memory because of buffer overruns
//terrain.vertexCount = options.size * options.size;
terrain.vertexCount = options.size * options.size * 3;
VertexDeclaration decl = terrain.vertexDeclaration;
VertexBufferBinding binding = terrain.vertexBufferBinding;
int offset = 0;
// Position/Normal
decl.AddElement(POSITION, 0, VertexElementType.Float3, VertexElementSemantic.Position);
decl.AddElement(NORMAL, 0, VertexElementType.Float3, VertexElementSemantic.Normal);
// TexCoords
decl.AddElement(TEXCOORD, offset, VertexElementType.Float2, VertexElementSemantic.TexCoords, 0);
offset += VertexElement.GetTypeSize(VertexElementType.Float2);
decl.AddElement(TEXCOORD, offset, VertexElementType.Float2, VertexElementSemantic.TexCoords, 1);
offset += VertexElement.GetTypeSize(VertexElementType.Float2);
// TODO: Color
HardwareVertexBuffer buffer =
HardwareBufferManager.Instance.CreateVertexBuffer(
decl.GetVertexSize(POSITION),
terrain.vertexCount,
BufferUsage.StaticWriteOnly, true);
binding.SetBinding(POSITION, buffer);
buffer =
HardwareBufferManager.Instance.CreateVertexBuffer(
decl.GetVertexSize(NORMAL),
terrain.vertexCount,
BufferUsage.StaticWriteOnly, true);
binding.SetBinding(NORMAL, buffer);
buffer =
HardwareBufferManager.Instance.CreateVertexBuffer(
offset,
terrain.vertexCount,
BufferUsage.StaticWriteOnly, true);
binding.SetBinding(TEXCOORD, buffer);
minLevelDistSqr = new float[numMipMaps];
int endx = options.startx + options.size;
int endz = options.startz + options.size;
// TODO: name buffers different so we can unlock
HardwareVertexBuffer posBuffer = binding.GetBuffer(POSITION);
IntPtr pos = posBuffer.Lock(BufferLocking.Discard);
HardwareVertexBuffer texBuffer = binding.GetBuffer(TEXCOORD);
IntPtr tex = texBuffer.Lock(BufferLocking.Discard);
float min = 99999999, max = 0;
unsafe {
float* posPtr = (float*)pos.ToPointer();
float* texPtr = (float*)tex.ToPointer();
int posCount = 0;
int texCount = 0;
for(int j = options.startz; j < endz; j++) {
for(int i = options.startx; i < endx; i++) {
float height = options.GetWorldHeight(i, j) * options.scaley;
posPtr[posCount++] = (float)i * options.scalex;
posPtr[posCount++] = height;
posPtr[posCount++] = (float)j * options.scalez;
texPtr[texCount++] = (float)i / (float)options.worldSize;
texPtr[texCount++] = (float)j / (float)options.worldSize;
texPtr[texCount++] = ((float)i / (float)options.size) * (float)options.detailTile;
texPtr[texCount++] = ((float)j / (float)options.size) * (float)options.detailTile;
if(height < min) {
min = height;
}
if(height > max) {
max = height;
}
} // for i
} // for j
} // unsafe
// unlock the buffers
posBuffer.Unlock();
texBuffer.Unlock();
box.SetExtents(
new Vector3((float) options.startx * options.scalex, min, (float)options.startz * options.scalez),
new Vector3((float)(endx - 1) * options.scalex, max, (float)(endz - 1) * options.scalez));
center = new Vector3((options.startx * options.scalex + endx - 1) / 2,
(min + max) / 2,
(options.startz * options.scalez + endz - 1) / 2);
float C = CalculateCFactor();
CalculateMinLevelDist2(C);
}