| 904 |
|
|
| 905 |
|
if (ac < 5) |
| 906 |
|
return(MG_EARGC); |
| 907 |
< |
if (!isflt(av[1])) |
| 907 |
> |
if (!isflt(av[ac-1])) |
| 908 |
|
return(MG_ETYPE); |
| 909 |
< |
length = atof(av[1]); |
| 909 |
> |
length = atof(av[ac-1]); |
| 910 |
|
if (length <= FTINY && length >= -FTINY) |
| 911 |
|
return(MG_EILL); |
| 912 |
|
/* do bottom face */ |
| 913 |
|
newav[0] = mg_ename[MG_E_FACE]; |
| 914 |
|
for (i = 1; i < ac-1; i++) |
| 915 |
< |
newav[i] = av[i+1]; |
| 915 |
> |
newav[i] = av[i]; |
| 916 |
|
newav[i] = NULL; |
| 917 |
|
if ((rv = handle_it(MG_E_FACE, i, newav)) != MG_OK) |
| 918 |
|
return(rv); |
| 922 |
|
norm[0] = norm[1] = norm[2] = 0.; |
| 923 |
|
v1[0] = v1[1] = v1[2] = 0.; |
| 924 |
|
for (i = 2; i < ac-1; i++) { |
| 925 |
< |
if ((cv = c_getvert(av[i+1])) == NULL) |
| 925 |
> |
if ((cv = c_getvert(av[i])) == NULL) |
| 926 |
|
return(MG_EUNDEF); |
| 927 |
|
v2[0] = cv->p[0] - cv0->p[0]; |
| 928 |
|
v2[1] = cv->p[1] - cv0->p[1]; |
| 941 |
|
vent[1] = nvn[i-1]; |
| 942 |
|
if ((rv = handle_it(MG_E_VERTEX, 3, vent)) != MG_OK) |
| 943 |
|
return(rv); |
| 944 |
< |
cv = c_getvert(av[i+1]); /* checked above */ |
| 944 |
> |
cv = c_getvert(av[i]); /* checked above */ |
| 945 |
|
for (j = 0; j < 3; j++) |
| 946 |
|
sprintf(p[j], FLTFMT, cv->p[j] - length*norm[j]); |
| 947 |
|
if ((rv = handle_it(MG_E_POINT, 4, pent)) != MG_OK) |
| 953 |
|
return(rv); |
| 954 |
|
/* do the side faces */ |
| 955 |
|
newav[5] = NULL; |
| 956 |
< |
newav[3] = av[ac-1]; |
| 956 |
> |
newav[3] = av[ac-2]; |
| 957 |
|
newav[4] = nvn[ac-3]; |
| 958 |
|
for (i = 1; i < ac-1; i++) { |
| 959 |
|
newav[1] = nvn[i-1]; |
| 960 |
< |
newav[2] = av[i+1]; |
| 960 |
> |
newav[2] = av[i]; |
| 961 |
|
if ((rv = handle_it(MG_E_FACE, 5, newav)) != MG_OK) |
| 962 |
|
return(rv); |
| 963 |
|
newav[3] = newav[2]; |
