分享一段求曲面等参数曲线的代码

ll_109

tag_t Extract_isoCurve(tag_t face,double w,int type)
{
& [3 g; R9 V% p4 S3 b% x! z tag_t* pcurve;
+ C/ V# C2 w1 H8 a+ a) ] int n=0;
if (!face)
7 r: U9 j  g# _4 F {
0 ?- v6 @% L: R. V  uc1601("no face is get",1);
  return NULL_TAG;
. D0 H5 l8 T( H$ r5 ~0 W# f }
( |; O1 j6 R7 c* S UF_CALL(UF_MODL_create_isocurve(face,type,w,0.001,&pcurve,&n));

; Y; `3 Z# b8 }( o  s if (pcurve)
{
! I- F1 Y! S: ]: o; {4 ^6 |  tag_t t1=pcurve[0];
  UF_free(pcurve);
  return t1;
}
2 K* L% b" Z0 }" s1 p& F+ Y* y else
{
  uc1601("no spline",1);
& i$ G" I) E" l0 U4 j  return NULL_TAG;
}
! Q4 B. W0 u5 h) ?}
' R' W$ K# N& Q2 H5 G9 A