proland::MousePositionHandler Class Reference
[ui]

An EventHandler that can determine the position of the mouse in world space. More...

#include <MousePositionHandler.h>

List of all members.

Public Member Functions
	MousePositionHandler (map< ptr< SceneNode >, ptr< TerrainNode > > terrains, ptr< EventHandler > next)
	Creates a new MousePositionhandler.
virtual	~MousePositionHandler ()
	Deletes this MousePositionHandler.
ptr< TerrainQuad >	findTile (float x, float y, ptr< TerrainQuad > quad)
	Finds the TerrainQuad that contains the given coordinates.
void	getWorldCoordinates (int x, int y)
	Determines the terrain and the terrain tile that contains the given coordinates.
Protected Member Functions
	MousePositionHandler ()
	Creates a new MousePositionHandler.
void	init (map< ptr< SceneNode >, ptr< TerrainNode > > terrains, ptr< EventHandler > next)
	Initializes this MousePositionHandler.
Protected Attributes
map< ptr< SceneNode >, ptr < TerrainNode > >	terrains
	The list of SceneNodes contained in the scene mapped to their TerrainNodes.
Private Attributes
vec2i	mousePosition
	Displayed mouse position.
int	currentTerrain
	The terrain pointed by the cursor.
vec3d	terrainPosition
	Local position inside the terrain pointer by the cursor.
vec3i	tile
	Coordinates of the tile (level, tx, ty) pointed inside the terrain.
ptr< EventHandler >	next
	The EventHandler that must handle the events.

---

Detailed Description

An EventHandler that can determine the position of the mouse in world space.

It can determine on which TerrainNode the cursor is, and the position inside it. This EventHandler is only for debug purpose, since it requires costly operations. (DepthBuffer read...). It then uses the ShowInfoTask to display the mouse position.

Author:

Antoine Begault

---

Constructor & Destructor Documentation

proland::MousePositionHandler::MousePositionHandler	(	map< ptr< SceneNode >, ptr< TerrainNode > >	terrains,
		ptr< EventHandler >	next
	)

Creates a new MousePositionhandler.

Parameters:

	terrains	the list of SceneNodes contained in the scene mapped to their TerrainNodes. These SceneNodes are used to determine the transformation matrices, and the TerrainNodes are used to determine if the point is inside the terrain.
	next	the EventHandler that must handle the events.

virtual proland::MousePositionHandler::~MousePositionHandler

(

)

[virtual]

Deletes this MousePositionHandler.

proland::MousePositionHandler::MousePositionHandler

(

)

[protected]

Creates a new MousePositionHandler.

---

Member Function Documentation

ptr<TerrainQuad> proland::MousePositionHandler::findTile	(	float	x,
		float	y,
		ptr< TerrainQuad >	quad
	)

Finds the TerrainQuad that contains the given coordinates.

void proland::MousePositionHandler::getWorldCoordinates	(	int	x,
		int	y
	)

Determines the terrain and the terrain tile that contains the given coordinates.

It will set mousePosition, currentTerrain, terrainPosition, and tile.

void proland::MousePositionHandler::init	(	map< ptr< SceneNode >, ptr< TerrainNode > >	terrains,
		ptr< EventHandler >	next
	)			[protected]

Initializes this MousePositionHandler.

See MousePositionHandler.

---

Member Data Documentation

int proland::MousePositionHandler::currentTerrain [private]

The terrain pointed by the cursor.

If no terrain is under the cursor, it will be set to -1 and no terrain coordinates will be displayed, only mouse coordinates.

vec2i proland::MousePositionHandler::mousePosition [private]

Displayed mouse position.

Retrieved when the mouse moves.

ptr<EventHandler> proland::MousePositionHandler::next [private]

The EventHandler that must handle the events.

vec3d proland::MousePositionHandler::terrainPosition [private]

Local position inside the terrain pointer by the cursor.

map<ptr<SceneNode>, ptr<TerrainNode> > proland::MousePositionHandler::terrains [protected]

The list of SceneNodes contained in the scene mapped to their TerrainNodes.

These SceneNodes are used to determine the transformation matrices, and the TerrainNodes are used to determine if the point is inside the terrain.

vec3i proland::MousePositionHandler::tile [private]

Coordinates of the tile (level, tx, ty) pointed inside the terrain.