eic-opticks/CSG/CSGGrid.h

0001 #pragma once
0002 /**
0003 CSGGrid.h : signed distance field grid
0004 =======================================
0005
0006 * NB: no other CSG dependency, can and should be relocated down to sysrap if still needed
0007 * instance returned from CSGQuery::scanPrim which is used by CSGGeometry::saveSignedDistanceField
0008
0009 ::
0010
0011     epsilon:GeoChain blyth$ opticks-f CSGGrid.h
0012     ./CSG/CSGGeometry.cc:#include "CSGGrid.h"
0013     ./CSG/CSGGrid.cc:#include "CSGGrid.h"
0014     ./CSG/CSGQuery.cc:#include "CSGGrid.h"
0015     ./CSG/CMakeLists.txt:    CSGGrid.h
0016     ./CSG/CSGGrid.h:CSGGrid.h : signed distance field grid
0017     epsilon:opticks blyth$
0018
0019
0020 **/
0021
0022 #include <functional>
0023 struct float4 ;
0024 struct float3 ;
0025 struct NP ;
0026
0027 #include "CSG_API_EXPORT.hh"
0028
0029 struct CSG_API CSGGrid
0030 {
0031     static const char* BASE ;
0032
0033     float4 ce ;
0034     float margin ;
0035     int nx ;
0036     int ny ;
0037     int nz ;
0038     float3 gridscale ;
0039     int ni ;
0040     int nj ;
0041     int nk ;
0042     NP* sdf ;
0043     float* sdf_v ;
0044     NP* xyzd ;
0045     float* xyzd_v ;
0046
0047     CSGGrid( const float4& ce_, int nx_, int ny_, int nz_ );
0048
0049     void init();
0050     void init_meta();
0051     void scan( std::function<float(const float3&)> sdf  ) ;
0052
0053     void save(const char* geom, const char* base=nullptr) const ;
0054 };
0055
0056