From 0ea5fc66924303d1bf73ba283a383e2aadee02f2 Mon Sep 17 00:00:00 2001 From: neodarz Date: Sat, 11 Aug 2018 20:21:34 +0200 Subject: Initial commit --- docs/doxygen/nel/a02719.html | 391 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 391 insertions(+) create mode 100644 docs/doxygen/nel/a02719.html (limited to 'docs/doxygen/nel/a02719.html') diff --git a/docs/doxygen/nel/a02719.html b/docs/doxygen/nel/a02719.html new file mode 100644 index 00000000..fe1a6800 --- /dev/null +++ b/docs/doxygen/nel/a02719.html @@ -0,0 +1,391 @@ + + +NeL: NL3D::CLandscapeVegetableBlockCreateContext class Reference + + + +
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+

NL3D::CLandscapeVegetableBlockCreateContext Class Reference

#include <landscape_vegetable_block.h> +

+

Detailed Description

+Information for instanciation of vegetable IG. NB: there is one CLandscapeVegetableBlock per landscape TessBlock.
Author:
Lionel Berenguier

+Nevrax France

+
Date:
2001
+ +

+ +

+Definition at line 127 of file landscape_vegetable_block.h. + + + + + + + + + + + + + + + + + + + + + +

Public Member Functions

 CLandscapeVegetableBlockCreateContext ()
void eval (uint ts, uint tt, float x, float y, CVector &pos)
void init (CPatch *patch, uint ts, uint tt)

Private Attributes

bool _Empty
CPatch * _Patch
CVector _Pos [9]
uint _Ts
 Coordinate of the lower-left tile. 2x2 tile vegetables are generated.

uint _Tt
 Coordinate of the lower-left tile. 2x2 tile vegetables are generated.

+

Constructor & Destructor Documentation

+

+ + + + +
+ + + + + + + + + +
NL3D::CLandscapeVegetableBlockCreateContext::CLandscapeVegetableBlockCreateContext (   ) 
+
+ + + + + +
+   + + +

+ +

+Definition at line 277 of file landscape_vegetable_block.cpp. +

+

00278 {
+00279         _Patch= NULL;
+00280 }
+
+

Member Function Documentation

+

+ + + + +
+ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
void NL3D::CLandscapeVegetableBlockCreateContext::eval ( uint  ts,
uint  tt,
float  x,
float  y,
CVector &  pos
) 
+
+ + + + + +
+   + + +

+If Empty, create all the necessary information from patch. Then compute requested Pos, from the tile ts,tt, and pos in this tile.

Parameters:
+ + + +
ts,tt coordinate of the tile.
x,y coordinate [0..1] in the tile.
+
+ +

+Definition at line 295 of file landscape_vegetable_block.cpp. +

+References _Empty, NL3D::CPatch::computeVertex(), NL3D::CPatch::getOrderS(), NL3D::CPatch::getOrderT(), NL3D_TESSBLOCK_TILESIZE, nlassert, s, t, uint, x, and y. +

+Referenced by NL3D::CPatch::generateTileVegetable(). +

+

00296 {
+00297         nlassert(NL3D_TESSBLOCK_TILESIZE==4);
+00298 
+00299         // If never created, do it now
+00300         // ==================
+00301         if(_Empty)
+00302         {
+00303                 // Eval Position and normals for the 9 vertices (around the 2x2 tiles)
+00304                 for(uint j=0; j<3;j++)
+00305                 {
+00306                         float   t= (float)(_Tt+j)/_Patch->getOrderT();
+00307                         for(uint i=0; i<3;i++)
+00308                         {
+00309                                 float   s= (float)(_Ts+i)/_Patch->getOrderS();
+00310                                 // eval position.
+00311                                 // use computeVertex() and not bpatch->eval() because vegetables must follow the 
+00312                                 // noise (at least at tile precision...). It is slower but necessary.
+00313                                 _Pos[j*3+i]= _Patch->computeVertex(s, t);
+00314                         }
+00315                 }
+00316 
+00317                 // Ok, it's done
+00318                 _Empty= false;
+00319         }
+00320 
+00321 
+00322         // Eval, with simple bilinear
+00323         // ==================
+00324         nlassert(ts==_Ts || ts==_Ts+1);
+00325         nlassert(tt==_Tt || tt==_Tt+1);
+00326         uint    ds= ts-_Ts;
+00327         uint    dt= tt-_Tt;
+00328         // Indices.
+00329         uint    v00= dt*3 + ds;
+00330         uint    v10= v00 + 1;
+00331         uint    v01= v00 + 3;
+00332         uint    v11= v00 + 4;
+00333         // BiLinearFactor.
+00334         float   dxdy= (1-x)*(1-y);
+00335         float   dx2dy= x*(1-y);
+00336         float   dxdy2= (1-x)*y;
+00337         float   dx2dy2= x*y;
+00338 
+00339         // Compute Pos.
+00340         pos = _Pos[v00] * dxdy;
+00341         pos+= _Pos[v10] * dx2dy;
+00342         pos+= _Pos[v01] * dxdy2;
+00343         pos+= _Pos[v11] * dx2dy2;
+00344 }
+
+

+ + + + +
+ + + + + + + + + + + + + + + + + + + + + + + + + +
void NL3D::CLandscapeVegetableBlockCreateContext::init ( CPatch *  patch,
uint  ts,
uint  tt
) 
+
+ + + + + +
+   + + +

+ +

+Definition at line 284 of file landscape_vegetable_block.cpp. +

+References _Empty, nlassert, and uint. +

+Referenced by NL3D::CLandscapeVegetableBlock::update(). +

+

00285 {
+00286         nlassert(patch);
+00287         _Empty= true;
+00288         _Patch= patch;
+00289         _Ts= ts;
+00290         _Tt= tt;
+00291 }
+
+

Field Documentation

+

+ + + + +
+ + +
bool NL3D::CLandscapeVegetableBlockCreateContext::_Empty [private] +
+
+ + + + + +
+   + + +

+ +

+Definition at line 144 of file landscape_vegetable_block.h. +

+Referenced by eval(), and init().

+

+ + + + +
+ + +
CPatch* NL3D::CLandscapeVegetableBlockCreateContext::_Patch [private] +
+
+ + + + + +
+   + + +

+ +

+Definition at line 145 of file landscape_vegetable_block.h.

+

+ + + + +
+ + +
CVector NL3D::CLandscapeVegetableBlockCreateContext::_Pos[ 9 ] [private] +
+
+ + + + + +
+   + + +

+ +

+Definition at line 149 of file landscape_vegetable_block.h.

+

+ + + + +
+ + +
uint NL3D::CLandscapeVegetableBlockCreateContext::_Ts [private] +
+
+ + + + + +
+   + + +

+Coordinate of the lower-left tile. 2x2 tile vegetables are generated. +

+ +

+Definition at line 147 of file landscape_vegetable_block.h.

+

+ + + + +
+ + +
uint NL3D::CLandscapeVegetableBlockCreateContext::_Tt [private] +
+
+ + + + + +
+   + + +

+Coordinate of the lower-left tile. 2x2 tile vegetables are generated. +

+ +

+Definition at line 147 of file landscape_vegetable_block.h.

+

The documentation for this class was generated from the following files: +
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