vtlib library

Public Member Functions  
vtGeomFactory (vtGeode *pGeode, vtMesh::PrimType ePrimType, int iVertType, int iMaxVertsPerMesh, int iMatIndex, int iExpectedVerts=1)  
vtGeomFactory (vtMesh *pMesh)  
void  PrimStart () 
void  AddVertex (const FPoint3 &p) 
void  PrimEnd () 
float  AddSurfaceLineToMesh (vtHeightField3d *pHF, const DLine2 &line, float fSpacing, float fOffset, bool bInterp=true, bool bCurve=false, bool bTrue=false) 
The vtGeomFactory class makes it easy to create geometry with a lot of vertices. You simply provide vertices, and it will create as many geometries as necessary to contain them all.
vtGeomFactory::vtGeomFactory  (  vtGeode *  pGeode, 
vtMesh::PrimType  ePrimType,  
int  iVertType,  
int  iMaxVertsPerMesh,  
int  iMatIndex,  
int  iExpectedVerts = 1 

) 
Constructor.
pGeode  The geometry node which will receive the mesh object(s) that this factory will produce. 
ePrimType  The type of mesh to produce. 
iVertType  The vertex attributes for the meshes to produce. 
iMaxVertsPerMesh  The largest number of vertices to allow in a single mesh. When this number is exceeded, the current mesh will be finished and another mesh begun. 
iMatIndex  The material index of the mesh when it is added to the geometry node. 
iExpectedVerts  If you know how many vertices will be mesh ahead of time, you can save a little time and memory by passing the number. 
vtGeomFactory::vtGeomFactory  (  vtMesh *  pMesh  ) 
Alternate, simpler constructor.
pMesh  The mesh which will receive all the vertices that this factory produces. 
float vtGeomFactory::AddSurfaceLineToMesh  (  vtHeightField3d *  pHF, 
const DLine2 &  line,  
float  fSpacing,  
float  fOffset,  
bool  bInterp = true , 

bool  bCurve = false , 

bool  bTrue = false 

) 
Create geometry for a 2D line by draping the points on a heightfield.
pHF  The heightfield to drape on. 
line  The 2D line to drape, in Earth coordinates. 
fSpacing  The approximate spacing of the surface tessellation, used to decide how finely to tessellate the line. 
fOffset  An offset to elevate each point in the resulting geometry, useful for keeping it visibly above the ground. 
bInterp  True to interpolate between the vertices of the input line. This is generally desirable when the ground is much more finely spaced than the input line. 
bCurve  True to interpret the vertices of the input line as control points of a curve. The created geometry will consist of a draped line which passes through the control points. 
bTrue  True to use the true elevation of the terrain, ignoring whatever scale factor is being used to exaggerate elevation for display. 
void vtGeomFactory::AddVertex  (  const FPoint3 &  p  ) 
Tell the factory to add a vertex to the current primitive.
void vtGeomFactory::PrimEnd  (  ) 
Tell the factory to end a primitive.
void vtGeomFactory::PrimStart  (  ) 
Tell the factory to start a primitive.