NX二次开发源码分享：动态画圆，指定屏幕点和向量相关用法

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NX二次开发源码分享：动态画圆，指定屏幕点和向量相关用法

这个案例很不错的，分享下，程序运行的结果是指定屏幕，拖拉即可动态绘制圆圈！

#include <stdio.h>
#include <uf_defs.h>
#include <uf.h>
#include <uf_ui.h>
#include <uf_csys.h>
#include <uf_vec.h>
#include <uf_disp.h>
#include <uf_curve.h>
#include <uf_mtx.h>
#include <uf_obj.h>
typedef struct
      { UF_CURVE_arc_t  *arc;
      double       abs_ctr[3];
      double       matrix[9];
      double       x_axis[3];
      double       y_axis[3];
      } my_motion_data_t;
/* Define a motion callback to render a visual representation of
* the circle to be created, along with a bounding box around the
* circle, an arc of radius 1.0, and a "rubberband" line from the
* center to the cursor position.
*/
static void motion_cb( double                *screen_pos,
                     UF_UI_motion_cb_data_p_t  motion_cb_data,
                     my_motion_data_t       *my_data )
{
double radius, pos_array[5][3];
double xrad[3], yrad[3], x_y_vec[3], x_ny_vec[3];
/* Calculate the arc radius:  the distance from the arc center
   * to the current screen position.
   */
UF_VEC3_distance( my_data->abs_ctr, screen_pos, &radius );
/* Map the arc center to the "csys of the arc".
   */
UF_MTX3_vec_multiply( my_data->abs_ctr,
                     my_data->matrix,
                     my_data->arc->arc_center );
/* Draw a circle and an arc in the view of the cursor.
   */
UF_DISP_display_ogp_circle( motion_cb_data->view_tag,
                        my_data->matrix,
                        my_data->arc->arc_center,
                        radius );
UF_DISP_display_ogp_arc( motion_cb_data->view_tag,
                           my_data->matrix,
                           15.0*DEGRA, 345.0*DEGRA,
                           my_data->arc->arc_center,
                           1.0 );
/* Draw a bounding box around the circle.
   */
UF_VEC3_scale( radius, my_data->x_axis, xrad );
UF_VEC3_scale( radius, my_data->y_axis, yrad );
UF_VEC3_add( xrad, yrad, x_y_vec  );
UF_VEC3_sub( xrad, yrad, x_ny_vec );
UF_VEC3_add( my_data->abs_ctr, x_y_vec,  pos_array[0] );
UF_VEC3_sub( my_data->abs_ctr, x_ny_vec, pos_array[1] );
UF_VEC3_sub( my_data->abs_ctr, x_y_vec,  pos_array[2] );
UF_VEC3_add( my_data->abs_ctr, x_ny_vec, pos_array[3] );
UF_VEC3_add( my_data->abs_ctr, x_y_vec,  pos_array[4] );
UF_DISP_display_ogp_polyline( motion_cb_data->view_tag,
                           pos_array, 5 );
/* Draw a "rubberband" line from the circle center to the
   * cursor position.
   */
UF_DISP_display_ogp_line( motion_cb_data->view_tag,
                        my_data->abs_ctr,
                        screen_pos );
}
#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)
{
int             default_plane;
int             plane_resp, ctr_resp, pos_resp;
tag_t          plane_tag, saved_wcs, mtx_id, csys_id,
                  arc_id, view_tag;
double          plane_matrix[9], plane_origin[3],
                  x_vec[3], y_vec[3], arc_edge_pos[3];
double          root_origin[3] = {0.0, 0.0, 0.0};
double          work_origin[3];
UF_CURVE_arc_t arc;
my_motion_data_t  my_data;

my_data.arc = &arc;
arc.start_angle = 0.0;
arc.end_angle = TWOPI; /* Create a full circle. */
default_plane = 5;    /* Default plane = WCS */
do
{
      /* Specify the plane on which the circle is to be created.
      */
      UF_CALL(UF_UI_specify_plane(
                     "Specify plane for circle creation",
                     &default_plane,
                     1,
                     &plane_resp,
                     plane_matrix,
                     plane_origin,
                     &plane_tag ));
      if (plane_resp ==3)
      {
         /* Save the current WCS for future restoration.
         */
         UF_CSYS_ask_wcs( &saved_wcs );
         /* Move the WCS to the specified plane. This is
         * necessary because the position passed to the motion
         * callback, and the position returned by
         * UF_UI_specify_screen_position, is the screen
         * position projected onto the WCS XY plane.
         */
         if (default_plane != 5)
         {
            UF_CSYS_create_matrix( plane_matrix, &mtx_id );
            UF_CSYS_create_csys(  plane_origin, mtx_id,
                                 &csys_id );
            UF_CSYS_set_wcs( csys_id );
         }
         /* Obtain unit vectors and the arc matrix relative to
         * the Work Part coordinate system.
         */
         UF_MTX3_x_vec( plane_matrix, x_vec );
         UF_MTX3_y_vec( plane_matrix, y_vec );
         UF_CSYS_map_point( UF_CSYS_ROOT_COORDS, x_vec,
                        UF_CSYS_WORK_COORDS, x_vec );
         UF_CSYS_map_point( UF_CSYS_ROOT_COORDS, y_vec,
                        UF_CSYS_WORK_COORDS, y_vec );
         UF_CSYS_map_point( UF_CSYS_ROOT_COORDS, root_origin,
                        UF_CSYS_WORK_COORDS, work_origin );
         UF_VEC3_sub( x_vec, work_origin, my_data.x_axis );
         UF_VEC3_sub( y_vec, work_origin, my_data.y_axis );
         UF_MTX3_initialize( my_data.x_axis, my_data.y_axis,
                           my_data.matrix );
         UF_CSYS_create_matrix( my_data.matrix,
                              &arc.matrix_tag );
         do
         {
            UF_CALL(UF_UI_specify_screen_position(
                              "Specify arc center",
                              NULL,
                              NULL,
                              my_data.abs_ctr,
                              &view_tag,
                              &ctr_resp ));
            if (ctr_resp == UF_UI_PICK_RESPONSE)
            {
                  /* Map the arc center to the arc csys.
                  */
                  UF_MTX3_vec_multiply( my_data.abs_ctr,
                                       my_data.matrix,
                                       arc.arc_center );
                  UF_CALL(UF_UI_specify_screen_position(
                                 "Indicate arc radius",
                                 (UF_UI_motion_fn_t)motion_cb,
                                 (void *)&my_data,
                                 arc_edge_pos,
                                 &view_tag,
                                 &pos_resp ));
                  /* If a position was obtained, create the
                  * circle.
                  */
                  if (pos_resp == UF_UI_PICK_RESPONSE)
                  {
                     UF_VEC3_distance( my_data.abs_ctr,
                                    arc_edge_pos,
                                    &arc.radius );
                     UF_CURVE_create_arc( &arc, &arc_id );
                  }
            }
         } while ( (ctr_resp == UF_UI_PICK_RESPONSE) &&
                  (pos_resp != UF_UI_CANCEL)          );
         /* Restore the WCS if it was altered above.
         */
         if (default_plane != 5)
         {
            UF_CSYS_set_wcs( saved_wcs );
            UF_OBJ_delete_object( csys_id );
         }
      }
} while (ctr_resp == UF_UI_BACK && plane_resp == 3);
}
/*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);
}

yuleihz · 发表于 2016-1-8 22:21:57

老师来个NXOPEN的耍耍

wu150060 · 发表于 2016-9-17 10:11:08

学习一下，顶( }

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[二次开发源码] NX二次开发源码分享：动态画圆，指定屏幕点和向量相关用法

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