【NX二次开发】获取对象边界包容盒的三个函数UF_MODL_ask_bounding_box

今天看到胡工对bounding_box的分享，我也来测试一番（原帖地址：https://www.ugapi.com/thread-10287.html）

获取对象的边界盒子的三个函数：

1 UF_MODL_ask_bounding_box　　　　　　//只能得到绝对坐标系下的边界盒子，速度快，结果不精确 
2 UF_MODL_ask_bounding_box_aligned　//可以得到指定坐标系下的盒子，速度快，结果不精确 
3 UF_MODL_ask_bounding_box_exact 　 //可以得到指定坐标系下的盒子，速度慢，结果精确

运行时间测试：　

　

生成上面这个3D产品的边界包容盒100次，测试的结果为：

UF_MODL_ask_bounding_box_exact的速度还是挺慢的

函数例子：

  1 //box
  2 #include "Text.h"
  3 static int init_proc(UF_UI_selection_p_t select, void *user_data)
  4 {
  5     int  errorCode = 0;
  6     int  num_triples = 1; //选择类型 数量
  7     UF_UI_mask_t mask_triples[] = { UF_solid_type,0,0 }; //定义选择类型
  8
  9     errorCode = UF_UI_set_sel_mask(select, UF_UI_SEL_MASK_CLEAR_AND_ENABLE_SPECIFIC, num_triples, mask_triples);
 10     if (errorCode == 0)
 11     {
 12         return UF_UI_SEL_SUCCESS;
 13     }
 14     else
 15     {
 16         return UF_UI_SEL_FAILURE;
 17     }
 18 }
 19
 20 extern DllExport void ufusr(char *param, int *returnCode, int rlen)
 21 {
 22     UF_initialize();
 23     char *message = "提示";
 24     char *title = "标题";
 25     int scope = UF_UI_SEL_SCOPE_ANY_IN_ASSEMBLY;//选取范围
 26     int response;
 27     int count = 0;
 28     tag_p_t object;
 29     UF_UI_select_with_class_dialog(message, title, scope, init_proc, NULL, &response, &count, &object);
 30     for (int i = 0; i < count; i++)
 31     {
 32         tag_t tagObj = object[i];
 33         UF_DISP_set_highlight(tagObj, 0);
 34         //---------------------- Enter your callback code here -------------------
 35         double    block_corner_pt[3];
 36         char charC[132] = "";
 37         char charK[132] = "";
 38         char charG[132] = "";
 39         char * edge_len[3] = { "","","" };
 40
 41         //UF_MODL_ask_bounding_box
 42         double bounding_box[6];
 43         UF_MODL_ask_bounding_box(tagObj, bounding_box);
 44         //创建方块
 45         tag_t tagBox;
 46         block_corner_pt[0] = bounding_box[0];
 47         block_corner_pt[1] = bounding_box[1];
 48         block_corner_pt[2] = bounding_box[2];
 49         sprintf(charC, "%f", abs(bounding_box[0]-bounding_box[3]));
 50         sprintf(charK, "%f", abs(bounding_box[1]-bounding_box[4]));
 51         sprintf(charG, "%f", abs(bounding_box[2]-bounding_box[5]));
 52         edge_len[0] = charC;
 53         edge_len[1] = charK;
 54         edge_len[2] = charG;
 55         UF_MODL_create_block1(UF_NULLSIGN, block_corner_pt, edge_len, &tagBox);
 56
 57
 58         //UF_MODL_ask_bounding_box_aligned
 59         tag_t tagWcsTemp = NULL_TAG;
 60         UF_CSYS_ask_wcs(&tagWcsTemp);
 61         double    pDblMin_corner[3] = { 0,0,0 };
 62         double    pDblminDirections[3][3];
 63         double    pDbDistances[3] = { 0,0,0 };
 64         UF_MODL_ask_bounding_box_aligned(tagObj, tagWcsTemp, FALSE, pDblMin_corner, pDblminDirections, pDbDistances);
 65         //创建方块
 66         block_corner_pt[0] = pDblMin_corner[0];
 67         block_corner_pt[1] = pDblMin_corner[1];
 68         block_corner_pt[2] = pDblMin_corner[2];
 69         sprintf(charC, "%f", pDbDistances[0]);
 70         sprintf(charK, "%f", pDbDistances[1]);
 71         sprintf(charG, "%f", pDbDistances[2]);
 72         edge_len[0] = charC;
 73         edge_len[1] = charK;
 74         edge_len[2] = charG;
 75         UF_MODL_create_block1(UF_NULLSIGN, block_corner_pt, edge_len, &tagBox);
 76
 77
 78         //UF_MODL_ask_bounding_box_exact
 79         double pDblBodyBox[3];
 80         double directions[3][3];
 81         double distances[3];
 82         UF_MODL_ask_bounding_box_exact(tagObj, tagWcsTemp, pDblBodyBox, directions, distances);
 83         //创建方块
 84         block_corner_pt[0] = pDblBodyBox[0];
 85         block_corner_pt[1] = pDblBodyBox[1];
 86         block_corner_pt[2] = pDblBodyBox[2];
 87         sprintf(charC, "%f", distances[0]);
 88         sprintf(charK, "%f", distances[1]);
 89         sprintf(charG, "%f", distances[2]);
 90         edge_len[0] = charC;
 91         edge_len[1] = charK;
 92         edge_len[2] = charG;
 93         UF_MODL_create_block1(UF_NULLSIGN, block_corner_pt, edge_len, &tagBox);
 94
 95
 96         //------------------------------------------------------------------------
 97     }
 98     UF_terminate();
 99 }
100
101 extern int ufusr_ask_unload(void)
102 {
103     return (UF_UNLOAD_IMMEDIATELY);
104 }

效果：