30 |
|
#define max(a,b) ((a) > (b) ? (a) : (b)) |
31 |
|
|
32 |
|
|
33 |
< |
double funvalue(), l_hermite(), argument(); |
33 |
> |
double funvalue(), l_hermite(), l_bezier(), argument(); |
34 |
|
|
35 |
|
|
36 |
|
main(argc, argv) |
44 |
|
|
45 |
|
varset("PI", PI, NULL); |
46 |
|
funset("hermite", 5, l_hermite); |
47 |
+ |
funset("bezier", 5, l_bezier); |
48 |
|
|
49 |
|
if (argc < 8) |
50 |
|
goto userror; |
163 |
|
argument(2)*(-2.0*t+3.0)*t*t + |
164 |
|
argument(3)*((t-2.0)*t+1.0)*t + |
165 |
|
argument(4)*(t-1.0)*t*t ); |
166 |
+ |
} |
167 |
+ |
|
168 |
+ |
|
169 |
+ |
double |
170 |
+ |
l_bezier() |
171 |
+ |
{ |
172 |
+ |
double t; |
173 |
+ |
|
174 |
+ |
t = argument(5); |
175 |
+ |
return( argument(1) * (1.+t*(-3.+t*(3.-t))) + |
176 |
+ |
argument(2) * 3.*t*(1.+t*(-2.+t)) + |
177 |
+ |
argument(3) * 3.*t*t*(1.-t) + |
178 |
+ |
argument(4) * t*t*t ); |
179 |
|
} |