File: CppWrap.comp

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/*******************************************************************************
*
* McStas, neutron ray-tracing package
*         Copyright 1997-2002, All rights reserved
*         Risoe National Laboratory, Roskilde, Denmark
*         Institut Laue Langevin, Grenoble, France
*
* Component: CppWrap
*
* %I
*
* Written by: Peter Willendrup
* Date: June 2017
* Origin: DTU
*
* Simple example of wrapping / calling a c++ library from McStas, Hello World style
*
* %D
* Compile the enclosed snippets this way:
*
* g++ -fpic -shared hello.cpp -o libhello.so
* g++ -fpic -shared hellowrap.cpp -L. -lhello -o libhellowrap.so
*
*
* %P
* Input parameters:
*
* %E
*******************************************************************************/

DEFINE COMPONENT CppWrap
DEFINITION PARAMETERS ()
SETTING PARAMETERS (string something="default")
OUTPUT PARAMETERS ()
DEPENDENCY "-L. -lhellowrap"
/* Neutron parameters: (x,y,z,vx,vy,vz,t,sx,sy,sz,p) */
INITIALIZE
%{
#include "hellowrap.h"
  sayHi(something);
%}

TRACE
%{
%}

MCDISPLAY
%{
  /* A bit ugly; hard-coded dimensions. */
  
  line(0,0,0,0.2,0,0);
  line(0,0,0,0,0.2,0);
  line(0,0,0,0,0,0.2);
%}

END