/*
  This is the unite.cxx example program from page 80 of:
  J. Corney and T. Lim, "3D Modeling with ACIS", Saxe-Coburg Publications, Dun Eaglais, UK, 2001

  This program creates two cylinders, rotates one and then unites them before the resulting BODY
  (solid) is saved to a file.

  Before running this program, make sure you set the shared library path:
  setenv LD_LIBRARY_PATH ${LD_LIBRARY_PATH}:/usr/arch/apps/acis/lib/solaris_so:/usr/arch/apps/acis/lib/solaris_so_debug
*/

#include <stdio.h>
#include <boolean/kernapi/api/boolapi.hxx>
#include <constrct/kernapi/api/cstrapi.hxx>
#include <kernel/kernapi/api/kernapi.hxx>
#include <kernel/kerndata/top/alltop.hxx>
#include <kernel/kerndata/lists/lists.hxx>
#include <baseutil/vector/transf.hxx>
#include <baseutil/vector/vector.hxx>
#include <kernel/kerndata/savres/fileinfo.hxx>

void save_ent(const char *filename, ENTITY *ent);

int main()
{
  api_start_modeller(0);
  
  api_initialize_booleans();
  
  BODY *cyl1, *cyl2;
  
  api_make_frustum(100, 20, 20, 20, cyl1);
  api_make_frustum(100, 20, 20, 20, cyl2);

// Rotate one cylinder 90 degrees about X axis
  transf rotX = rotate_transf(3.14159265358/2, vector(1,0,0));
  api_apply_transf(cyl1, rotX);
  
// Unite the two cylinders
  api_unite(cyl1, cyl2);  // cyl2 is the result
  
// Save the result
  save_ent("unite.sat", cyl2);
    
  
  api_terminate_booleans();
  
  api_stop_modeller();
  return 0;
}



void save_ent(const char *filename, ENTITY *ent)
{
  FileInfo info; // Create FileInfo Object
  info.set_product_id("Michigan Tech University"); // set info's data
  info.set_units(1.0); // Millimeters
  
// Sets header info to be written to sat file
  api_set_file_info(FileId|FileUnits, info);
  
  FILE *fp = fopen(filename,"w");
  if (fp != NULL)
  {
    ENTITY_LIST *savelist = new ENTITY_LIST;
    savelist->add(ent);
    api_save_entity_list(fp, TRUE, *savelist);
    delete savelist;
  }
  else
    printf("Unable to save file!\n");
    
    fclose(fp);
}