Class TCastleTerrainData

Fields

Properties

Unit

type TCastleTerrainData = class(TCastleComponent)

Terrain (height map) data that can be used for TCastleTerrain.Data.

	`procedure DoChange;`
	`constructor Create(AOwner: TComponent); override;`
	`destructor Destroy; override;`
	`function Height(const Coord, TexCoord: TVector2): Single; virtual; abstract;`
	`procedure AddChangeNotification(const Notify: TNotifyEvent);`
	`procedure RemoveChangeNotification(const Notify: TNotifyEvent);`

	`procedure DoChange;`
Use this in descendants implementation to notify that data (affecting Height results) changed. In the base class, it takes care to run notifications registered by AddChangeNotification.

	`constructor Create(AOwner: TComponent); override;`

	`destructor Destroy; override;`

function Height(const Coord, TexCoord: TVector2): Single; virtual; abstract;

Return height for given terrain point.

Coord: The queried terrain height. Coord.X is the X position in local terrain coordinate space. Coord.Y is the Z position in local terrain coordinate space. They are in the range determined by TCastleTerrain.Size.
TexCoord: The texture coordinate at this point, assuming that TCastleTerrain.Size and texture UV scale would cancel each other, making both TexCoord.X and TexCoord.Y always in [0..1] range.
Note that TexCoord.Y grows in different direction than Coord.Y, this means that textures have natural look when viewer from above the terrain (otherwise they would seem flipped in one direction in CGE right-handed coordinate system).

	`procedure AddChangeNotification(const Notify: TNotifyEvent);`
Add notification when data (affecting Height results) changes.

	`procedure RemoveChangeNotification(const Notify: TNotifyEvent);`
Remove notification when data (affecting Height results) changes.

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