Dynamic Terrain (CLOD)

Classes
class	BruteTerrain
class	DemeterTerrain
class	vtDynTerrainGeom
class	BinTri
class	Block
class	SMTerrain
class	SRTerrain
class	TiledDatasetDescription
class	vtTiledGeom
struct	TriIndex
class	TVTerrain

Macros
#define	INTEGER_HEIGHT   1
#define	STORE_FRUSTUM   0
#define	FAST_ALLOC   0
#define	USE_FP8   1
#define	SetFrust(t, i)
#define	FRUST_OUT   0
#define	FRUST_PARTIN   1
#define	FRUST_ALLIN   2
#define	PI   3.1415926535897932385
#define	ABS(x)   (((x)<0)?(-(x)):(x))
#define	ROUND(a)   ((int)((a)+0.5))
#define	MAXERR   USHRT_MAX /* maximum scaled triangle error */
#define	SMALLER1   1 /* Is neighbor 1 smaller? */
#define	SMALLER2   2 /* Is neighbor 2 smaller? */
#define	BIGGER3   4 /* Is neighbor 3 larger? */
#define	SURFACE   8 /* on surface? */
#define	ALLINFOV   16 /* completely in field of view? */
#define	PARTINFOV   32 /* partially in field of view? */
#define	ALLINROD   64 /* completely in rectangle of definition? */
#define	PARTINROD   128 /* partially in rectangle of definition? */
#define	BORDER(t)   (m_info[(t)->s] & PARTINROD)
#define	INROD(t)   (m_info[(t)->s] & ALLINROD)
#define	PUTONSURFACE(t)   m_info[(t)->s] = (m_info[(t)->s]&(ALLINROD|PARTINROD))|SURFACE
#define	ONSURFACE(t)   (m_info[(t)->s] & SURFACE)
#define	INFOV(t)   (m_info[(t)->s] & (ALLINFOV | PARTINFOV))
#define	SMALLN1(t)   (m_info[(t)->s] & SMALLER1)
#define	SMALLN2(t)   (m_info[(t)->s] & SMALLER2)
#define	BIGN3(t)   (m_info[(t)->s] & BIGGER3)
#define	ISLEAF(t)   ((t)->depth >= m_depth)
#define	IAMLEFTCHILD(t)
#define	TRIEQUATE(a, b)
#define	IERRTHRESH   0.001
#define	IERRTHRESHINC   0.00005
#define	IDISTTHRESH   700.0
#define	IDISTTHRESHINC   50.0
#define	IVEXAGGER   1.0
#define	IVEXAGGERINC   0.1

Typedefs
typedef osg::ref_ptr < vtDynTerrainGeom >	vtDynTerrainGeomPtr
typedef short	HeightType
typedef uchar	VarianceType
typedef int	MathType
typedef Block *	BlockPtr
typedef uchar *	ucharptr
typedef bool(*	ProgFuncPtrType )(int)
typedef osg::ref_ptr< vtTiledGeom >	vtTiledGeomPtr
typedef int	Coord2d [2]

Enumerations
enum	DTErr {   DTErr_OK, DTErr_EMPTY_EXTENTS, DTErr_NOTSQUARE, DTErr_NOTPOWER2,   DTErr_NOMEM }

Detailed Description

These classes are used for dynamically rendered terrain surfaces, including implementations of Continuous Level of Detail (CLOD).

Macro Definition Documentation

#define IAMLEFTCHILD

(

t)

Value:

((((t)->depth&1)&&(((t)->orient^(t)->x)&1)) || \
             ((((t)->depth&1)==0)&&(((t)->orient^(t)->x^(t)->y)&1)))

#define TRIEQUATE	(		a,
			b
	)

Value:

(a)->x=(b)->x; \
            (a)->y=(b)->y; \
            (a)->depth=(b)->depth; \
            (a)->orient=(b)->orient; \
            (a)->s=(b)->s