CSG/tests/intersect_leaf_box3_test.cc

0001 /**
0002 intersect_leaf_box3_test.cc
0003 ===================================
0004
0005 This is for very low level testing of csg_intersect_node.h intersect functions.
0006 For a slightly higher level test see CSGNodeScanTest.cc
0007
0008 **/
0009
0010 #include "OPTICKS_LOG.hh"
0011 #include <cmath>
0012
0013
0014 #include "scuda.h"
0015 #include "squad.h"
0016 #include "sqat4.h"
0017
0018 #define DEBUG 1
0019 #include "csg_intersect_leaf.h"
0020 //#include "csg_intersect_node.h"
0021 //#include "csg_intersect_tree.h"
0022
0023
0024
0025 int main(int argc, char** argv)
0026 {
0027     OPTICKS_LOG(argc, argv);
0028
0029     quad q0 ;
0030     q0.f.x = 2.f*5.f ;
0031     q0.f.y = 2.f*10.f ;
0032     q0.f.z = 2.f*15.f ;
0033     q0.f.w = 0.f ;
0034
0035     float4 isect = make_float4(0.f, 0.f, 0.f, 0.f );
0036     float t_min = 0.f ;
0037
0038     float3 ray_origin    = make_float3(  0.f, 0.f, 0.f );
0039     float3 ray_direction = make_float3(  0.f, 0.f, 1.f );
0040
0041     bool valid_isect(false) ;
0042     intersect_leaf_box3( valid_isect, isect, q0, t_min, ray_origin, ray_direction );
0043
0044     float3 pos = make_float3( 0.f, 0.f, 0.f );
0045     if(valid_isect)
0046     {
0047         float t = isect.w ;
0048         pos = ray_origin + t*ray_direction ;
0049         float sd = distance_leaf_box3(pos, q0) ;
0050
0051         printf("//pos %10.4f %10.4f %10.4f    sd %10.4f \n", pos.x, pos.y, pos.z, sd );
0052     }
0053
0054     return 0 ;
0055 }
0056
0057
0058