line_ex1.cpp

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00001 #include <SyFi.h>
00002 
00003 int main() {
00004 
00005   
00006   ex p0 = lst(0.0,0.0,0.0);
00007   ex p1 = lst(1.0,1.0,1.0);
00008   
00009   Line line(p0,p1);
00010   
00011   // show usage of repr 
00012   symbol t("t"); 
00013   ex l_repr = line.repr(t);
00014   cout <<"l.repr "<<l_repr<<endl; 
00015   EQUAL_OR_DIE(l_repr, "{x==t,y==t,z==t,{t,0,1}}"); 
00016 
00017   for (int i=0; i< l_repr.nops(); i++) {
00018     cout <<"l_repr.op(" <<i<<"):  "<<l_repr.op(i)<<endl; 
00019   }
00020   
00021   // compute the integral of a function along the line 
00022   ex f = x*x + y*y*y + z;
00023   ex intf = line.integrate(f); 
00024   cout <<"intf "<<intf<<endl; 
00025   EQUAL_OR_DIE(intf, "13/12*sqrt(3)"); 
00026 
00027 
00028 
00029   return 0; 
00030 
00031 }
00032 

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