NX二次开发-测量投影距离

NXOPEN方法，直接录制测量投影距离命令

 NX9+VS2012

 #include <NXOpen/Annotations.hxx>
 #include <NXOpen/Assemblies_Component.hxx>
 #include <NXOpen/Assemblies_ComponentAssembly.hxx>
 #include <NXOpen/Body.hxx>
 #include <NXOpen/BodyCollection.hxx>
 #include <NXOpen/Face.hxx>
 #include <NXOpen/Line.hxx>
 #include <NXOpen/NXException.hxx>
 #include <NXOpen/Part.hxx>
 #include <NXOpen/PartCollection.hxx>
 #include <NXOpen/DirectionCollection.hxx>
 #include <NXOpen/MeasureBuilder.hxx>
 #include <NXOpen/MeasureDistance.hxx>
 #include <NXOpen/MeasureDistanceBuilder.hxx>
 #include <NXOpen/MeasureManager.hxx>
 #include <NXOpen/Point.hxx>
 #include <NXOpen/PointCollection.hxx>
 #include <NXOpen/ScCollector.hxx>
 #include <NXOpen/SelectDisplayableObject.hxx>
 #include <NXOpen/NXObjectManager.hxx>
 #include <uf_obj.h>
 #include <uf_part.h>
 #include <uf_ui.h>

 UF_initialize();

 //找名字得到面的tag
 tag_t FaceTag = NULL_TAG;
 UF_OBJ_cycle_by_name("MYFACE", &FaceTag);

 //以下为NXOPEN录制
 NXObject *nullNXObject(NULL);
 MeasureDistanceBuilder *measureDistanceBuilder1;
 measureDistanceBuilder1 = workPart->MeasureManager()->CreateMeasureDistanceBuilder(nullNXObject);

 Point3d origin1(0.0, 0.0, 0.0);
 Vector3d vector1(0.0, 1.0, 0.0);//设置矢量方向
 Direction *direction1;
 direction1 = workPart->Directions()->CreateDirection(origin1, vector1, SmartObject::UpdateOptionAfterModeling);

 measureDistanceBuilder1->SetProjectionVector(direction1);//设置投影

 //创建点
 NXOpen::Point3d Point1XYZ(,,);

 //Point3d转Point
 NXOpen::Point *Point1 = workPart->Points()->CreatePoint(Point1XYZ);

 //设置第一个对象
 measureDistanceBuilder1->Object1()->SetValue(Point1);

 //设置第二个对象
 Face *face1(dynamic_cast<Face *>(NXOpen::NXObjectManager::Get(FaceTag)));
 measureDistanceBuilder1->Object2()->SetValue(face1);

 //创建,类型为投影距离
 MeasureDistance *measureDistance1;
 measureDistance1 = workPart->MeasureManager()->NewDistance(NULL, Point1, face1, direction1, MeasureManager::ProjectionTypeMinimum);

 //获得距离
 double Distance = measureDistance1->Value();

 //打印
 char msg[];
 sprintf_s(msg, "%f", Distance);
 uc1601(msg, );

 //销毁删除
 delete measureDistance1;

 UF_terminate();

 Caesar卢尚宇
 2019年7月26日

UFUN写的算法

思路：自己指定原点和矢量方向，从原点沿着矢量方向作一条无限长的直线，在对选择的面获取面的原点和向量方向，创建一个基准平面(基准平面是无限大的)，最后求直线和基准平面的交点到原点距离，就是投影距离。

 NX9+VS2012

 #include <uf.h>
 #include <uf_ui.h>
 #include <uf_csys.h>
 #include <uf_curve.h>
 #include <uf_obj.h>
 #include <uf_mtx.h>
 #include <uf_modl.h>

 UF_initialize();

 //找名字得到点的tag
 tag_t PointTag = NULL_TAG;
 UF_OBJ_cycle_by_name("MYPOINT", &PointTag);

 //找名字得到面的tag
 tag_t FaceTag = NULL_TAG;
 UF_OBJ_cycle_by_name("MYFACE", &FaceTag);

 //由点出发创建直线

 //创建向量方向
 double Vec[] = { 0.0, 0.0, 1.0 };

 //3*3矩阵,输入Z向量,得到矩阵
 double Mtx[];
 UF_MTX3_initialize_z(Vec, Mtx);

 //创建矩阵
 tag_t MatrixTag = NULL_TAG;
 UF_CSYS_create_matrix(Mtx, &MatrixTag);

 //创建临时坐标系
 double P1[] = { 0.0, 0.0, 0.0 };//直线起点
 tag_t CsysTag = NULL_TAG;
 UF_CSYS_create_temp_csys(P1, MatrixTag, &CsysTag);

 //设置WCS
 UF_CSYS_set_wcs(CsysTag);

 //创建直线终点
 double P2[] = { P1[], P1[] + , P1[] };

 //从当前工作坐标系转换到绝对坐标系
 int InputCsys = UF_CSYS_ROOT_WCS_COORDS;
 int OutputCsys = UF_CSYS_ROOT_COORDS;
 double OutputPoint[];
 UF_CSYS_map_point(InputCsys, P2, OutputCsys, OutputPoint);

 //创建直线
 UF_CURVE_line_t LineCoods;
 LineCoods.start_point[] = P1[];
 LineCoods.start_point[] = P1[];
 LineCoods.start_point[] = P1[];
 LineCoods.end_point[] = OutputPoint[];
 LineCoods.end_point[] = OutputPoint[];
 LineCoods.end_point[] = OutputPoint[];
 tag_t LineTag = NULL_TAG;
 UF_CURVE_create_line(&LineCoods, &LineTag);

 //获得面的原点和向量方向
 int Type;
 double Point[];
 double Dir[];
 double Box[];
 double Radius[];
 double RadData[];
 int NormDir;
 UF_MODL_ask_face_data(FaceTag, &Type, Point, Dir, Box, Radius, RadData, &NormDir);

 //创建基准平面
 tag_t Plane_Tag = NULL_TAG;
 UF_MODL_create_fixed_dplane(Point, Dir, &Plane_Tag);

 //求直线与基准平面的交点
 int IntersectionsNum;
 UF_MODL_intersect_info_p_t * Intersections;
 UF_MODL_intersect_objects(LineTag, Plane_Tag, 0.01, &IntersectionsNum, &Intersections);//输入两个对象tag，找交点

 double IntersectionsPoint[];//交点坐标
 for (int i = ; i < IntersectionsNum; i++)
 {
     int type = Intersections[i]->intersect_type;
     if (type == UF_MODL_INTERSECT_POINT)
     {
         IntersectionsPoint[] = Intersections[i]->intersect.point.coords[];
         IntersectionsPoint[] = Intersections[i]->intersect.point.coords[];
         IntersectionsPoint[] = Intersections[i]->intersect.point.coords[];
     }
 }

 //删除直线和基准平面
 UF_OBJ_delete_object(LineTag);
 UF_OBJ_delete_object(Plane_Tag);

 //打印
 char msg[];
 sprintf_s(msg, "距离为:%f", IntersectionsPoint[]);
 uc1601(msg,);

 //释放内存
 UF_free(Intersections);

 UF_terminate();

 caesar卢尚宇
 2019年7月26日