Mathc initiation/a133

Sommaire

Installer et compiler ces fichiers dans votre répertoire de travail.

	c00a1.c

/* --------------------------------- */
/* save as c00a1.c                   */
/* --------------------------------- */
#include "x_hfile.h"
#include      "fa.h"
/* --------------------------------- */
int main(void)
{
tvalue t;
	
  t.value =  4.;
  t.min   =  0.; 
  t.max   =  6.*PI;  
  t.step  =  .1; 

 clrscrn();
 
 printf(" r(t) = f(t)i + g(t)j + h(t)k \n\n");
 printf(" With \n\n");
 printf(" f : t-> %s  \n", feq);
 printf(" g : t-> %s  \n", geq);
 printf(" h : t-> %s\n\n", heq);
 printf(" t = %+.2f \n\n", t.value);

 printf(" Animate the velocity and accelerator vectors\n\n"
        " ... load \"a_main.plt\" ... with gnuplot.   \n\n");
 
  axe_3d();
    
  do{	  
       G_Curve_3d(
             f,g,h,
             t
            );
            
       pause(9.E7);
  
 } while((t.value+=t.step)<t.max);
 
 stop();

 return 0;
}
/* --------------------------------- */
/* --------------------------------- */

Draw the velocity and the accelerator vectors at the point P(f(t),g(t),h(t)) in 3d

Exemple de sortie écran :

 r(t) = f(t)i + g(t)j + h(t)k 

 With 

 f : t-> cos(t)  
 g : t-> sin(t)  
 h : t-> t

 t = +4.00 

 Animate the velocity and accelerator vectors

 ... load "a_main.plt" ... with gnuplot.  .