购买与咨询 NX 二次开发视频教程，请联系微信号：13890821008  QQ号：85585969  

函数说明：
编辑一个平面的数据。

函数参数：
第1个参数为输入：
plane_tag代表参数变量，tag_t 为输入参数类型，平面

第2个参数为输入：
输入double 双精度类型的参数，参数的变量格式为origin_point [ 3 ]，飞机上的新原点

第3个参数为输入：
输入double 双精度类型的参数，参数的变量格式为plane_normal [ 3 ]，飞机的新常态

UF_MODL_edit_plane函数实例代码演示：
说明：此文件包含以下外部函数支持创建和编辑平面：UF_MODL_ask_planeUF_MODL_create_planeUF_MODL_edit_plane
[quote]
#include <stdio.h>
#include <uf.h>
#include <uf_part.h>
#include <uf_defs.h>
#include <uf_modl.h>
#include <uf_vec.h>

#define UF_CALL(X) (report( __FILE__, __LINE__, #X, (X)))

static int report( char *file, int line, char *call, int irc)
{
if (irc)
{
char messg[133];
printf("%s, line %d: %s\n", file, line, call);
(UF_get_fail_message(irc, messg)) ?
printf(" returned a %d\n", irc) :
printf(" returned error %d: %s\n", irc, messg);
}
return(irc);
}

static void do_ugopen_api(void)
{

char *edge_length[3] = {"5.0", "5.0", "5.0"};
char *prtnam = "planes";

double dot_value;
double magnitude;
double origin[3] = {0.0, 0.0, 0.0};
double origin_point[3];
double pl1_normal[3];
double pl2_normal[3];
double unit_pl2_normal[3];

tag_t block_feat_tag;
tag_t part_tag;
tag_t plane1_tag;
tag_t plane2_tag;

UF_FEATURE_SIGN create = UF_NULLSIGN;

/* Open a new part */
UF_CALL( UF_PART_new(prtnam, METRIC, &part_tag) );

/* Create a block of dimensions 5, 5, 5 */
UF_CALL(UF_MODL_create_block1(create, origin, edge_length, &block_feat_tag));

/* Create the first plane on a face of the block */
origin_point[0] = 0.0;
origin_point[1] = 0.0;
origin_point[2] = 5.0;

pl1_normal[0] = 0.0;
pl1_normal[1] = 0.0;
pl1_normal[2] = 1.0;

UF_CALL(UF_MODL_create_plane(origin_point, pl1_normal, &plane1_tag));

/* Create the second plane on the diagonally opposite face of the block */
origin_point[0] = 5.0;
origin_point[1] = 5.0;
origin_point[2] = 0.0;

pl2_normal[0] = 0.0;
pl2_normal[1] = 0.0;
pl2_normal[2] = 1.0;

UF_CALL(UF_MODL_create_plane(origin_point, pl2_normal, &plane2_tag));

/* Fetch the parameters of both the planes */
UF_CALL(UF_MODL_ask_plane(plane1_tag, origin_point, pl1_normal));
UF_CALL(UF_MODL_ask_plane(plane2_tag, origin_point, pl2_normal));

/* Compute the dot product of plane normals and verify it to be 1 */
/* normals should be identical */
UF_VEC3_dot(pl1_normal, pl2_normal, &dot_value);

if ( dot_value != 1.0 )
{
printf("***ERROR creating planes***\n");
}

/* Edit the second plane by changing it's normal by 90 degrees */
pl2_normal[0] = 0.0;
pl2_normal[1] = 1.0;
pl2_normal[2] = 0.0;

UF_CALL(UF_VEC3_unitize(pl2_normal, 0.0000002, &magnitude, unit_pl2_normal));
UF_CALL(UF_MODL_edit_plane(plane2_tag, origin_point, unit_pl2_normal));

/* Fetch the parameter again of the second plane */
UF_CALL(UF_MODL_ask_plane(plane2_tag, origin_point, pl2_normal));

/* Compute the dot product of plane normals and verify it to be 0 */
UF_VEC3_dot(pl1_normal, pl2_normal, &dot_value);

if ( dot_value != 0.0 )
{
printf("***ERROR editing planes***\n");
}

}

/*ARGSUSED*/
void ufusr(char *param, int *retcode, int param_len)
{
if (!UF_CALL(UF_initialize()))
{
do_ugopen_api();
UF_CALL(UF_terminate());
}
}

int ufusr_ask_unload(void)
{
return (UF_UNLOAD_IMMEDIATELY);
}

[/quote]