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#include <pcl/visualization/pcl_visualizer.h>
#include <pcl/surface/on_nurbs/triangulation.h>
using Point = pcl::PointXYZ;
int
main (int argc, char *argv[])
{
std::string file_3dm;
if (argc < 2)
{
printf ("\nUsage: pcl_example_nurbs_viewer_surface 3dm-out-file\n\n");
exit (0);
}
file_3dm = argv[1];
pcl::visualization::PCLVisualizer viewer ("B-spline surface viewer");
viewer.setSize (800, 600);
int mesh_resolution = 128;
ON::Begin();
// load surface
ONX_Model on_model;
bool rc = on_model.Read(file_3dm.c_str());
// print diagnostic
if ( rc )
std::cout << "Successfully read: " << file_3dm << std::endl;
else
std::cout << "Errors during reading: " << file_3dm << std::endl;
// ON_TextLog out;
// on_model.Dump(out);
if(on_model.m_object_table.Count()==0)
{
std::cout << "3dm file does not contain any objects: " << file_3dm << std::endl;
return -1;
}
const ON_Object* on_object = on_model.m_object_table[0].m_object;
if(on_object==nullptr)
{
std::cout << "object[0] not valid." << std::endl;
return -1;
}
const ON_NurbsSurface& on_surf = *(ON_NurbsSurface*)on_object;
pcl::PolygonMesh mesh;
std::string mesh_id = "mesh_nurbs";
if(on_model.m_object_table.Count()==1)
{
std::cout << "3dm file does not contain a trimming curve: " << file_3dm << std::endl;
pcl::on_nurbs::Triangulation::convertSurface2PolygonMesh (on_surf, mesh, mesh_resolution);
}
else
{
on_object = on_model.m_object_table[1].m_object;
if(on_object==nullptr)
{
std::cout << "object[1] not valid." << std::endl;
return -1;
}
const ON_NurbsCurve& on_curv = *(ON_NurbsCurve*)on_object;
pcl::on_nurbs::Triangulation::convertTrimmedSurface2PolygonMesh (on_surf, on_curv, mesh,
mesh_resolution);
}
viewer.addPolygonMesh (mesh, mesh_id);
viewer.spin ();
return 0;
}
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