DXGfxLib.Terrain Class Reference

Terrain2 class manage a full 3D Terrain2. The Terrain2 will be built from a 2D grey level bitmap, which size need to be 259*259 nad which format need to be bmp. At loading time you need to provide a D3ddevice and a ref to an outdoor scene. The Terrain2 will be build of a multitude of tiles that will be registered to the outdoor scene graph. The current implementation of OutDoorScene feature a Quadtree for efficient culling of a Terrain2 outdoor scene. The quadtree struture is also used to optimize intersection methods. The Terrain2 is multi textured. The method used is to render at max two texture per pass which should accomodate even very old 3D cards. More...

List of all members.

Public Member Functions

Terrain ()

Terrain (float desiredWidth, float desiredHeigth)

Default constructor for Terrain. After that you won't have much until you effectively load a bitmap to really build the terrain.

void Initialize ()

void Initialize (float desiredWidth, float desiredHeigth)

void DeviceChanged (Device d3ddevice, OutDoorScene scene)

If your device has changed you need to call this one.

void Load (Device d3ddevice, OutDoorScene scene, string ressourceName)

This method is the most CPU intensive method of this class. It will use the bitmap to generate the terrain tiles geometry. Also each newly generated tile is going to be attached to the provided Outdoorscene. With our base implementation of Ourdoorscene this means that position in the quadtree will be determine for each newly created tile.

void LoadFromFile (Device d3ddevice, OutDoorScene scene, string fileName)

Load the terrain from a bitmap image used as an heigthmap. In Eter 3D Control the Terrain class will then load two texture grass.bmp and snow.bmp as well as an alphamap lightmap.dds and used those to texture the terrain. As in your specific situation I expect that your textured might be named differently, you should consider using the other load method. The lightmap.dds is used only for alpha value to know where on the terrain the snow texture should be applied. The grass texture is applied everywhere.

void Load (Device d3ddevice, OutDoorScene scene, string fileName, string baseTextureFile, string secondTextureFile)

Load the terrain from the bitmap in the filename file. base texture will be loaded then and applied everywhere. Then the secondtexture will also be tiled on the terrain geometry based on the alpha information in the alphamap dds file. As far as I am concerned I made up the dds file with the texture tool in the directx sdk.

float GetHeigth (OutDoorScene scene, float x, float z)

This method return the heigth of the terrain at the specified x and z coordinate. Remember that the z coordinate is going far away with directx default convention. The y is pointing up.

float GetHeigth (OutDoorScene scene, float x, float y, float z)

This method return the heigth of the terrain at the specified x and z coordinate and below the y value provided. In DX the ray intersection with a mesh is sensible to the distance between the point from which the ray is cast and the mesh here using an y value allow us to have a better precision than by cast the ray from a very high point in the sky :). This will also be consistant with a world getheigth that would be able to deal with houses with several level.

float GetHeigth (OutDoorScene scene, Vector3 underPoint)

Get the heigth of the tile under the point given in parameter. If the point is under the terrain level at that x and z 65536 is returned.

void AddInstances (OutDoorScene scene, FrameworkMesh mesh, InstanceInfo[] instancesInfo)

Terrain ()

Terrain (float desiredWidth, float desiredHeigth)

Default constructor for Terrain. After that you won't have much until you effectively load a bitmap to really build the terrain.

void Initialize ()

void Initialize (float desiredWidth, float desiredHeigth)

void DeviceChanged (Device d3ddevice, OutDoorScene scene)

If your device has changed you need to call this one.

void Load (Device d3ddevice, OutDoorScene scene, string ressourceName)

This method is the most CPU intensive method of this class. It will use the bitmap to generate the terrain tiles geometry. Also each newly generated tile is going to be attached to the provided Outdoorscene. With our base implementation of Ourdoorscene this means that position in the quadtree will be determine for each newly created tile.

void LoadFromFile (Device d3ddevice, OutDoorScene scene, string fileName)

Load the terrain from a bitmap image used as an heigthmap. In Eter 3D Control the Terrain class will then load two texture grass.bmp and snow.bmp as well as an alphamap lightmap.dds and used those to texture the terrain. As in your specific situation I expect that your textured might be named differently, you should consider using the other load method. The lightmap.dds is used only for alpha value to know where on the terrain the snow texture should be applied. The grass texture is applied everywhere.

void Load (Device d3ddevice, OutDoorScene scene, string fileName, string baseTextureFile, string secondTextureFile)

Load the terrain from the bitmap in the filename file. base texture will be loaded then and applied everywhere. Then the secondtexture will also be tiled on the terrain geometry based on the alpha information in the alphamap dds file. As far as I am concerned I made up the dds file with the texture tool in the directx sdk.

float GetHeigth (OutDoorScene scene, float x, float z)

This method return the heigth of the terrain at the specified x and z coordinate. Remember that the z coordinate is going far away with directx default convention. The y is pointing up.

float GetHeigth (OutDoorScene scene, float x, float y, float z)

This method return the heigth of the terrain at the specified x and z coordinate and below the y value provided. In DX the ray intersection with a mesh is sensible to the distance between the point from which the ray is cast and the mesh here using an y value allow us to have a better precision than by cast the ray from a very high point in the sky :). This will also be consistant with a world getheigth that would be able to deal with houses with several level.

float GetHeigth (OutDoorScene scene, Vector3 underPoint)

Get the heigth of the tile under the point given in parameter. If the point is under the terrain level at that x and z 65536 is returned.

void AddInstances (OutDoorScene scene, FrameworkMesh mesh, InstanceInfo[] instancesInfo)

Public Attributes

Texture texture = null

Our terrain is going to use a default texture.

Material material

It is also going to use a default material.

string heightmapFile

For some obscure reason we want to keep the filename of the bitmap used to build the terrain.

string baseTextureFile

The filename of the 'default' texture.

string secondTextureFile

Filename of a second texture that will be rendered only on the areas specified through the alphamap.

float maxTerrainHeigth

Out Terrain has a maximum heigth.

float minTerrainHeigth

A minimal height.

float secondTexHeigth

Not used. :).

Texture secondTexture = null

The second texture texture. Will be used for areas specified through the alphaMap texture.

Texture alphaMap = null

Used to specify where the secondTexture should be used.

float desiredWidth

We certainly want our terrain to have a specific width. This can be specified upon terrain creation and we keep the value in this member variable.

float desiredHeigth

We certainly want our terrain to have a specific heigth. This can be specified upon terrain creation and we keep the value in this member variable.

int width

Number of tiles along X.

int heigth

Number of tiles along Z (remember Z is looking far away, y is up and x is looking to the right).

float xSpacing

Dimension of a tile along x axis.

float zSpacing

Dimension of a tile along z axis.

float stretchFactor

Static Public Attributes

static string terrainEffectFile = "terrainTile.fx"

The effect file used for Terrain2 tiles. We load it once in the Terrain2 class and we pass a reference to the newly created effectGroup to all Terrain2 tiles.

Detailed Description

Terrain2 class manage a full 3D Terrain2. The Terrain2 will be built from a 2D grey level bitmap, which size need to be 259*259 nad which format need to be bmp. At loading time you need to provide a D3ddevice and a ref to an outdoor scene. The Terrain2 will be build of a multitude of tiles that will be registered to the outdoor scene graph. The current implementation of OutDoorScene feature a Quadtree for efficient culling of a Terrain2 outdoor scene. The quadtree struture is also used to optimize intersection methods. The Terrain2 is multi textured. The method used is to render at max two texture per pass which should accomodate even very old 3D cards.

Definition at line 39 of file Terrain.cs.

Constructor & Destructor Documentation

DXGfxLib.Terrain.Terrain ( )

Definition at line 144 of file Terrain.cs.

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DXGfxLib.Terrain.Terrain	(	float	desiredWidth,
		float	desiredHeigth
	)

Default constructor for Terrain. After that you won't have much until you effectively load a bitmap to really build the terrain.

Parameters:

	desiredWidth
	desiredHeigth

Definition at line 155 of file Terrain.cs.

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DXGfxLib.Terrain.Terrain ( )

Definition at line 144 of file Terrain.cs.

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DXGfxLib.Terrain.Terrain	(	float	desiredWidth,
		float	desiredHeigth
	)

Default constructor for Terrain. After that you won't have much until you effectively load a bitmap to really build the terrain.

Parameters:

	desiredWidth
	desiredHeigth

Definition at line 155 of file Terrain.cs.

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Member Function Documentation

void DXGfxLib.Terrain.AddInstances	(	OutDoorScene	scene,
		FrameworkMesh	mesh,
		InstanceInfo[]	instancesInfo
	)

Definition at line 546 of file Terrain.cs.

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void DXGfxLib.Terrain.AddInstances	(	OutDoorScene	scene,
		FrameworkMesh	mesh,
		InstanceInfo[]	instancesInfo
	)

Definition at line 546 of file Terrain.cs.

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void DXGfxLib.Terrain.DeviceChanged	(	Device	d3ddevice,
		OutDoorScene	scene
	)

If your device has changed you need to call this one.

Parameters:

	d3ddevice
	scene

Definition at line 197 of file Terrain.cs.

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void DXGfxLib.Terrain.DeviceChanged	(	Device	d3ddevice,
		OutDoorScene	scene
	)

If your device has changed you need to call this one.

Parameters:

	d3ddevice
	scene

Definition at line 197 of file Terrain.cs.

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float DXGfxLib.Terrain.GetHeigth	(	OutDoorScene	scene,
		Vector3	underPoint
	)

Get the heigth of the tile under the point given in parameter. If the point is under the terrain level at that x and z 65536 is returned.

Parameters:

underPoint

Returns:

Definition at line 341 of file Terrain.cs.

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float DXGfxLib.Terrain.GetHeigth	(	OutDoorScene	scene,
		float	x,
		float	y,
		float	z
	)

This method return the heigth of the terrain at the specified x and z coordinate and below the y value provided. In DX the ray intersection with a mesh is sensible to the distance between the point from which the ray is cast and the mesh here using an y value allow us to have a better precision than by cast the ray from a very high point in the sky :). This will also be consistant with a world getheigth that would be able to deal with houses with several level.

Parameters:

	x
	y
	z

Returns:

Definition at line 328 of file Terrain.cs.

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float DXGfxLib.Terrain.GetHeigth	(	OutDoorScene	scene,
		float	x,
		float	z
	)

This method return the heigth of the terrain at the specified x and z coordinate. Remember that the z coordinate is going far away with directx default convention. The y is pointing up.

Parameters:

	x
	z

Returns:: the heigth of the terrain at the specified x and z position.

Definition at line 311 of file Terrain.cs.

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float DXGfxLib.Terrain.GetHeigth	(	OutDoorScene	scene,
		Vector3	underPoint
	)

Get the heigth of the tile under the point given in parameter. If the point is under the terrain level at that x and z 65536 is returned.

Parameters:

underPoint

Returns:

Definition at line 341 of file Terrain.cs.

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float DXGfxLib.Terrain.GetHeigth	(	OutDoorScene	scene,
		float	x,
		float	y,
		float	z
	)

This method return the heigth of the terrain at the specified x and z coordinate and below the y value provided. In DX the ray intersection with a mesh is sensible to the distance between the point from which the ray is cast and the mesh here using an y value allow us to have a better precision than by cast the ray from a very high point in the sky :). This will also be consistant with a world getheigth that would be able to deal with houses with several level.

Parameters:

	x
	y
	z

Returns:

Definition at line 328 of file Terrain.cs.

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float DXGfxLib.Terrain.GetHeigth	(	OutDoorScene	scene,
		float	x,
		float	z
	)

This method return the heigth of the terrain at the specified x and z coordinate. Remember that the z coordinate is going far away with directx default convention. The y is pointing up.

Parameters:

	x
	z

Returns:: the heigth of the terrain at the specified x and z position.

Definition at line 311 of file Terrain.cs.

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void DXGfxLib.Terrain.Initialize	(	float	desiredWidth,
		float	desiredHeigth
	)

Definition at line 165 of file Terrain.cs.

void DXGfxLib.Terrain.Initialize ( )

Definition at line 160 of file Terrain.cs.

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void DXGfxLib.Terrain.Initialize	(	float	desiredWidth,
		float	desiredHeigth
	)

Definition at line 165 of file Terrain.cs.

void DXGfxLib.Terrain.Initialize ( )

Definition at line 160 of file Terrain.cs.

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void DXGfxLib.Terrain.Load	(	Device	d3ddevice,
		OutDoorScene	scene,
		string	fileName,
		string	baseTextureFile,
		string	secondTextureFile
	)

Load the terrain from the bitmap in the filename file. base texture will be loaded then and applied everywhere. Then the secondtexture will also be tiled on the terrain geometry based on the alpha information in the alphamap dds file. As far as I am concerned I made up the dds file with the texture tool in the directx sdk.

Parameters:

	fileName
	baseTexture
	secondTexture
	alphaMap

Definition at line 254 of file Terrain.cs.

void DXGfxLib.Terrain.Load	(	Device	d3ddevice,
		OutDoorScene	scene,
		string	ressourceName
	)

This method is the most CPU intensive method of this class. It will use the bitmap to generate the terrain tiles geometry. Also each newly generated tile is going to be attached to the provided Outdoorscene. With our base implementation of Ourdoorscene this means that position in the quadtree will be determine for each newly created tile.

Parameters:

	d3ddevice
	scene
	ressourceName

Definition at line 211 of file Terrain.cs.

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void DXGfxLib.Terrain.Load	(	Device	d3ddevice,
		OutDoorScene	scene,
		string	fileName,
		string	baseTextureFile,
		string	secondTextureFile
	)

Load the terrain from the bitmap in the filename file. base texture will be loaded then and applied everywhere. Then the secondtexture will also be tiled on the terrain geometry based on the alpha information in the alphamap dds file. As far as I am concerned I made up the dds file with the texture tool in the directx sdk.

Parameters:

	fileName
	baseTexture
	secondTexture
	alphaMap

Definition at line 254 of file Terrain.cs.

void DXGfxLib.Terrain.Load	(	Device	d3ddevice,
		OutDoorScene	scene,
		string	ressourceName
	)

This method is the most CPU intensive method of this class. It will use the bitmap to generate the terrain tiles geometry. Also each newly generated tile is going to be attached to the provided Outdoorscene. With our base implementation of Ourdoorscene this means that position in the quadtree will be determine for each newly created tile.

Parameters:

	d3ddevice
	scene
	ressourceName

Definition at line 211 of file Terrain.cs.

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void DXGfxLib.Terrain.LoadFromFile	(	Device	d3ddevice,
		OutDoorScene	scene,
		string	fileName
	)

Load the terrain from a bitmap image used as an heigthmap. In Eter 3D Control the Terrain class will then load two texture grass.bmp and snow.bmp as well as an alphamap lightmap.dds and used those to texture the terrain. As in your specific situation I expect that your textured might be named differently, you should consider using the other load method. The lightmap.dds is used only for alpha value to know where on the terrain the snow texture should be applied. The grass texture is applied everywhere.

Parameters:

fileName

The bitmap used as heigthmap

Definition at line 225 of file Terrain.cs.

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void DXGfxLib.Terrain.LoadFromFile	(	Device	d3ddevice,
		OutDoorScene	scene,
		string	fileName
	)

Load the terrain from a bitmap image used as an heigthmap. In Eter 3D Control the Terrain class will then load two texture grass.bmp and snow.bmp as well as an alphamap lightmap.dds and used those to texture the terrain. As in your specific situation I expect that your textured might be named differently, you should consider using the other load method. The lightmap.dds is used only for alpha value to know where on the terrain the snow texture should be applied. The grass texture is applied everywhere.

Parameters:

fileName

The bitmap used as heigthmap

Definition at line 225 of file Terrain.cs.

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Member Data Documentation

Texture DXGfxLib.Terrain::alphaMap = null

Used to specify where the secondTexture should be used.

Definition at line 100 of file Terrain.cs.

string DXGfxLib.Terrain::baseTextureFile

The filename of the 'default' texture.

Definition at line 70 of file Terrain.cs.

float DXGfxLib.Terrain::desiredHeigth

We certainly want our terrain to have a specific heigth. This can be specified upon terrain creation and we keep the value in this member variable.

Definition at line 112 of file Terrain.cs.

float DXGfxLib.Terrain::desiredWidth

We certainly want our terrain to have a specific width. This can be specified upon terrain creation and we keep the value in this member variable.

Definition at line 106 of file Terrain.cs.

string DXGfxLib.Terrain::heightmapFile

For some obscure reason we want to keep the filename of the bitmap used to build the terrain.

Definition at line 65 of file Terrain.cs.

int DXGfxLib.Terrain::heigth

Number of tiles along Z (remember Z is looking far away, y is up and x is looking to the right).

Definition at line 122 of file Terrain.cs.

Material DXGfxLib.Terrain::material

It is also going to use a default material.

Definition at line 60 of file Terrain.cs.

float DXGfxLib.Terrain::maxTerrainHeigth

Out Terrain has a maximum heigth.

Definition at line 80 of file Terrain.cs.

float DXGfxLib.Terrain::minTerrainHeigth

A minimal height.

Definition at line 85 of file Terrain.cs.

float DXGfxLib.Terrain::secondTexHeigth

Not used. :).

Definition at line 90 of file Terrain.cs.

Texture DXGfxLib.Terrain::secondTexture = null

The second texture texture. Will be used for areas specified through the alphaMap texture.

Definition at line 95 of file Terrain.cs.

string DXGfxLib.Terrain::secondTextureFile

Filename of a second texture that will be rendered only on the areas specified through the alphamap.

Definition at line 75 of file Terrain.cs.

float DXGfxLib.Terrain::stretchFactor

Definition at line 137 of file Terrain.cs.

static string DXGfxLib.Terrain::terrainEffectFile = "terrainTile.fx" [static]

The effect file used for Terrain2 tiles. We load it once in the Terrain2 class and we pass a reference to the newly created effectGroup to all Terrain2 tiles.

Definition at line 45 of file Terrain.cs.

Texture DXGfxLib.Terrain::texture = null

Our terrain is going to use a default texture.

Definition at line 55 of file Terrain.cs.

int DXGfxLib.Terrain::width

Number of tiles along X.

Definition at line 117 of file Terrain.cs.

float DXGfxLib.Terrain::xSpacing

Dimension of a tile along x axis.

Definition at line 127 of file Terrain.cs.

float DXGfxLib.Terrain::zSpacing

Dimension of a tile along z axis.

Definition at line 132 of file Terrain.cs.

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

D:/guillaume/guillara/3D/DXGfx/Backup/DXGfxLib/Terrain.cs
D:/guillaume/guillara/3D/DXGfx/DXGfxLib/Terrain.cs


Public Member Functions
	Terrain ()
	Terrain (float desiredWidth, float desiredHeigth)
	Default constructor for Terrain. After that you won't have much until you effectively load a bitmap to really build the terrain.
void	Initialize ()
void	Initialize (float desiredWidth, float desiredHeigth)
void	DeviceChanged (Device d3ddevice, OutDoorScene scene)
	If your device has changed you need to call this one.
void	Load (Device d3ddevice, OutDoorScene scene, string ressourceName)
	This method is the most CPU intensive method of this class. It will use the bitmap to generate the terrain tiles geometry. Also each newly generated tile is going to be attached to the provided Outdoorscene. With our base implementation of Ourdoorscene this means that position in the quadtree will be determine for each newly created tile.
void	LoadFromFile (Device d3ddevice, OutDoorScene scene, string fileName)
	Load the terrain from a bitmap image used as an heigthmap. In Eter 3D Control the Terrain class will then load two texture grass.bmp and snow.bmp as well as an alphamap lightmap.dds and used those to texture the terrain. As in your specific situation I expect that your textured might be named differently, you should consider using the other load method. The lightmap.dds is used only for alpha value to know where on the terrain the snow texture should be applied. The grass texture is applied everywhere.
void	Load (Device d3ddevice, OutDoorScene scene, string fileName, string baseTextureFile, string secondTextureFile)
	Load the terrain from the bitmap in the filename file. base texture will be loaded then and applied everywhere. Then the secondtexture will also be tiled on the terrain geometry based on the alpha information in the alphamap dds file. As far as I am concerned I made up the dds file with the texture tool in the directx sdk.
float	GetHeigth (OutDoorScene scene, float x, float z)
	This method return the heigth of the terrain at the specified x and z coordinate. Remember that the z coordinate is going far away with directx default convention. The y is pointing up.
float	GetHeigth (OutDoorScene scene, float x, float y, float z)
	This method return the heigth of the terrain at the specified x and z coordinate and below the y value provided. In DX the ray intersection with a mesh is sensible to the distance between the point from which the ray is cast and the mesh here using an y value allow us to have a better precision than by cast the ray from a very high point in the sky :). This will also be consistant with a world getheigth that would be able to deal with houses with several level.
float	GetHeigth (OutDoorScene scene, Vector3 underPoint)
	Get the heigth of the tile under the point given in parameter. If the point is under the terrain level at that x and z 65536 is returned.
void	AddInstances (OutDoorScene scene, FrameworkMesh mesh, InstanceInfo[] instancesInfo)
	Terrain ()
	Terrain (float desiredWidth, float desiredHeigth)
	Default constructor for Terrain. After that you won't have much until you effectively load a bitmap to really build the terrain.
void	Initialize ()
void	Initialize (float desiredWidth, float desiredHeigth)
void	DeviceChanged (Device d3ddevice, OutDoorScene scene)
	If your device has changed you need to call this one.
void	Load (Device d3ddevice, OutDoorScene scene, string ressourceName)
	This method is the most CPU intensive method of this class. It will use the bitmap to generate the terrain tiles geometry. Also each newly generated tile is going to be attached to the provided Outdoorscene. With our base implementation of Ourdoorscene this means that position in the quadtree will be determine for each newly created tile.
void	LoadFromFile (Device d3ddevice, OutDoorScene scene, string fileName)
	Load the terrain from a bitmap image used as an heigthmap. In Eter 3D Control the Terrain class will then load two texture grass.bmp and snow.bmp as well as an alphamap lightmap.dds and used those to texture the terrain. As in your specific situation I expect that your textured might be named differently, you should consider using the other load method. The lightmap.dds is used only for alpha value to know where on the terrain the snow texture should be applied. The grass texture is applied everywhere.
void	Load (Device d3ddevice, OutDoorScene scene, string fileName, string baseTextureFile, string secondTextureFile)
	Load the terrain from the bitmap in the filename file. base texture will be loaded then and applied everywhere. Then the secondtexture will also be tiled on the terrain geometry based on the alpha information in the alphamap dds file. As far as I am concerned I made up the dds file with the texture tool in the directx sdk.
float	GetHeigth (OutDoorScene scene, float x, float z)
	This method return the heigth of the terrain at the specified x and z coordinate. Remember that the z coordinate is going far away with directx default convention. The y is pointing up.
float	GetHeigth (OutDoorScene scene, float x, float y, float z)
	This method return the heigth of the terrain at the specified x and z coordinate and below the y value provided. In DX the ray intersection with a mesh is sensible to the distance between the point from which the ray is cast and the mesh here using an y value allow us to have a better precision than by cast the ray from a very high point in the sky :). This will also be consistant with a world getheigth that would be able to deal with houses with several level.
float	GetHeigth (OutDoorScene scene, Vector3 underPoint)
	Get the heigth of the tile under the point given in parameter. If the point is under the terrain level at that x and z 65536 is returned.
void	AddInstances (OutDoorScene scene, FrameworkMesh mesh, InstanceInfo[] instancesInfo)
Public Attributes
Texture	texture = null
	Our terrain is going to use a default texture.
Material	material
	It is also going to use a default material.
string	heightmapFile
	For some obscure reason we want to keep the filename of the bitmap used to build the terrain.
string	baseTextureFile
	The filename of the 'default' texture.
string	secondTextureFile
	Filename of a second texture that will be rendered only on the areas specified through the alphamap.
float	maxTerrainHeigth
	Out Terrain has a maximum heigth.
float	minTerrainHeigth
	A minimal height.
float	secondTexHeigth
	Not used. :).
Texture	secondTexture = null
	The second texture texture. Will be used for areas specified through the alphaMap texture.
Texture	alphaMap = null
	Used to specify where the secondTexture should be used.
float	desiredWidth
	We certainly want our terrain to have a specific width. This can be specified upon terrain creation and we keep the value in this member variable.
float	desiredHeigth
	We certainly want our terrain to have a specific heigth. This can be specified upon terrain creation and we keep the value in this member variable.
int	width
	Number of tiles along X.
int	heigth
	Number of tiles along Z (remember Z is looking far away, y is up and x is looking to the right).
float	xSpacing
	Dimension of a tile along x axis.
float	zSpacing
	Dimension of a tile along z axis.
float	stretchFactor
Static Public Attributes
static string	terrainEffectFile = "terrainTile.fx"
	The effect file used for Terrain2 tiles. We load it once in the Terrain2 class and we pass a reference to the newly created effectGroup to all Terrain2 tiles.