NeL: NL3D::CTessVertex class Reference

Constructor & Destructor Documentation

NL3D::CTessVertex::CTessVertex ( ) [inline]

Definition at line 107 of file tessellation.h.

References MaxFaceSize, and MaxNearLimit.

00108         {
00109                 // init to 0, so max always() works.
00110                 MaxFaceSize= 0;
00111                 MaxNearLimit= 0;
00112         }

Member Function Documentation

void NL3D::CTessVertex::computeGeomPos

(

)

Definition at line 113 of file tessellation.cpp.

References NLMISC::clamp(), EndPos, MaxFaceSize, MaxNearLimit, NLMISC::sqr(), and StartPos.

Referenced by NL3D::CPatch::computeGeomorphVertexList(), and NL3D::CTessFace::computeTesselatedPos().

00114 {
00115         // Compute Basic ErrorMetric.
00116         float   sqrDist= (StartPos - CLandscapeGlobals::RefineCenter).sqrnorm();
00117         float   pgeom= MaxFaceSize * CLandscapeGlobals::OORefineThreshold / sqrDist;
00118 
00119         // Compute ErrorMetric modified by TileNear transition, only if TileNear transition.
00120         if( sqrDist< CLandscapeGlobals::TileDistFarSqr )
00121         {
00122                 // Soft optim: do it only if necessary, ie result of max(errorMetric, errorMetricModified) is foreseeable here.
00123                 if(pgeom < MaxNearLimit)
00124                 {
00125                         float   f= (CLandscapeGlobals::TileDistFarSqr - sqrDist) * CLandscapeGlobals::OOTileDistDeltaSqr;
00126                         clamp(f, 0, 1);
00127                         // ^4 gives better smooth result
00128                         f= sqr(f);
00129                         f= sqr(f);
00130                         // interpolate the errorMetric
00131                         pgeom= MaxNearLimit*f + pgeom*(1-f);
00132                 }
00133         }
00134 
00135         // Interpolate StartPos to EndPos, between 1 and 2.
00136         if(pgeom<=1.0f)
00137                 Pos= StartPos;
00138         else if(pgeom>=2.0f)
00139                 Pos= EndPos;
00140         else
00141         {
00142                 float           f= pgeom - 1.0f;
00143                 Pos= f * (EndPos-StartPos) + StartPos;
00144         }
00145 }

NL3D::CTessVertex Class Reference

Detailed Description

Public Member Functions

Data Fields

Constructor & Destructor Documentation

Member Function Documentation

Field Documentation


Public Member Functions
void	computeGeomPos ()
	CTessVertex ()
Data Fields
CVector	EndPos
float	MaxFaceSize
float	MaxNearLimit
CVector	Pos
CVector	StartPos