NX二次开发-NXOPEN C#UF三点创建圆弧theUfSession.Curve.CreateArcThru3pts

NX9+VS2012

using System;
using NXOpen;
using NXOpen.UF;
using NXOpenUI;
using NXOpen.Utilities;



//获取WCS
Tag WcsId = Tag.Null;
theUfSession.Csys.AskWcs(out WcsId);

//获取WCS的矩阵和原点
Tag MatrixId = Tag.Null;
double[] CsysOrigin = new Double[3];
theUfSession.Csys.AskCsysInfo(WcsId, out MatrixId, CsysOrigin);

//画两个整圆
UFCurve.Arc HoleArcCoords1 = new UFCurve.Arc();
HoleArcCoords1.matrix_tag = MatrixId;
HoleArcCoords1.start_angle = 0 * UFConstants.DEGRA;
HoleArcCoords1.end_angle = 360 * UFConstants.DEGRA;
HoleArcCoords1.arc_center = new Double[3];
HoleArcCoords1.arc_center[0] = 0.0;
HoleArcCoords1.arc_center[1] = 0.0;
HoleArcCoords1.arc_center[2] = 0.0;
HoleArcCoords1.radius = 100;
Tag HoleArcTag1 = Tag.Null;
theUfSession.Curve.CreateArc(ref HoleArcCoords1, out HoleArcTag1);

UFCurve.Arc HoleArcCoords2 = new UFCurve.Arc();
HoleArcCoords2.matrix_tag = MatrixId;
HoleArcCoords2.start_angle = 0 * UFConstants.DEGRA;
HoleArcCoords2.end_angle = 360 * UFConstants.DEGRA;
HoleArcCoords2.arc_center = new Double[3];
HoleArcCoords2.arc_center[0] = 0.0;
HoleArcCoords2.arc_center[1] = 0.0;
HoleArcCoords2.arc_center[2] = 0.0;
HoleArcCoords2.radius = 120;
Tag HoleArcTag2 = Tag.Null;
theUfSession.Curve.CreateArc(ref HoleArcCoords2, out HoleArcTag2);

//创建链表
Tag[] ArcList = new Tag[2];
theUfSession.Modl.CreateList(out ArcList);

//插入对象到链表
theUfSession.Modl.PutListItem(ref ArcList, HoleArcTag1);
theUfSession.Modl.PutListItem(ref ArcList, HoleArcTag2);

//创建拉伸
string[] HoleLimit = { "0.0", "50.0" };
double[] HolePoint = { 0.0, 0.0, 0.0 };
double[] HoleDirection = { 0.0, 0.0, 1.0 };
Tag[] HoleExtrudedTag = new Tag[1];
theUfSession.Modl.CreateExtruded(ArcList, "0", HoleLimit, HolePoint, HoleDirection, FeatureSigns.Nullsign, out HoleExtrudedTag);

//特征找体
Tag HoleBodyTag = Tag.Null;
theUfSession.Modl.AskFeatBody(HoleExtrudedTag[0], out HoleBodyTag);

//创建颜色
theUfSession.Obj.SetColor(HoleBodyTag, 186);

//设置透明度
theUfSession.Obj.SetTranslucency(HoleBodyTag, 60);

//画一个整圆
UFCurve.Arc ToolMoveArcCoords1 = new UFCurve.Arc();
ToolMoveArcCoords1.matrix_tag = MatrixId;
ToolMoveArcCoords1.start_angle = 0 * UFConstants.DEGRA;
ToolMoveArcCoords1.end_angle = 360 * UFConstants.DEGRA;
ToolMoveArcCoords1.arc_center = new Double[3];
ToolMoveArcCoords1.arc_center[0] = 120;
ToolMoveArcCoords1.arc_center[1] = 0.0;
ToolMoveArcCoords1.arc_center[2] = 0.0;
ToolMoveArcCoords1.radius = 60;
Tag ToolMoveArcTag1 = Tag.Null;
theUfSession.Curve.CreateArc(ref ToolMoveArcCoords1, out ToolMoveArcTag1);

//创建链表
Tag[] ToolMoveArcList;
theUfSession.Modl.CreateList(out ToolMoveArcList);

//插入对象到链表
theUfSession.Modl.PutListItem(ref ToolMoveArcList, ToolMoveArcTag1);

//创建拉伸
string[] ToolMoveLimit = { "0.0", "50.0" };
double[] ToolMovePoint = { 0.0, 0.0, 0.0 };
double[] ToolMoveDirection = { 0.0, 0.0, 1.0 };
Tag[] ToolMoveExtrudedTag;
theUfSession.Modl.CreateExtruded(ToolMoveArcList, "0", ToolMoveLimit, ToolMovePoint, ToolMoveDirection, FeatureSigns.Nullsign, out ToolMoveExtrudedTag);

//特征找体
Tag ToolMoveBodyTag = Tag.Null;
theUfSession.Modl.AskFeatBody(ToolMoveExtrudedTag[0], out ToolMoveBodyTag);

//创建颜色
theUfSession.Obj.SetColor(ToolMoveBodyTag, 211);

//布尔求交
int NumResult = 0;
Tag[] ResultingBodies;
theUfSession.Modl.IntersectBodies(ToolMoveBodyTag, HoleBodyTag, out NumResult, out ResultingBodies);


//获得两个圆曲线的两个交点
int num_intersections = 0;
double[] data;
theUfSession.Modl.IntersectCurveToCurve(HoleArcTag1, ToolMoveArcTag1, out num_intersections, out data);

//创建起点
double[] FirstPoint = { data[0], data[1], data[2] };

//创建中点
double[] SecondPoint = { 100, 0, 0 };

//创建终点
double[] ThirdPoint = { data[5], data[6], data[7] };

//三点创建圆弧
Tag Thru3ArcTag = Tag.Null;
theUfSession.Curve.CreateArcThru3pts(1, FirstPoint, SecondPoint, ThirdPoint, out Thru3ArcTag);

//获得圆弧的长度
NXOpen.Arc arc1 = (NXOpen.Arc)NXObjectManager.Get(Thru3ArcTag);
double ArcLength = arc1.GetLength();

Caesar卢尚宇
2020年6月27日