PLM之家-NX9.0 二次开发实例视频31 NXOpen C++创建草图基本特征

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PLM之家-NX9.0 二次开发实例视频31 NXOpen C++创建基本特征 <1>-草图的创建
内容：
草图作为参数化建模的基础，使用代码实现草图的创建过程，主要是对草图环境的初始化，以及草图约束的添加等问题。
目的：
在NX中，使用NXOpen C++可以很方便的进行JA的录制，从而发掘草图约束中尺寸约束和几何约束的规律，通过这种方式，可以快速的完成开发。

NXOpen C++创建草图基本特征

31 NXOpen C++创建基本特征-草图的创建(1)项目介绍
31 NXOpen C++创建基本特征-草图的创建(2)UI设计
31 NXOpen C++创建基本特征-草图的创建(3)项目创建
31 NXOpen C++创建基本特征-草图的创建(4)草图特征创建
31 NXOpen C++创建基本特征-草图的创建(5)添加几何到草图
31 NXOpen C++创建基本特征-草图的创建(6)添加草图几何约束
31 NXOpen C++创建基本特征-草图的创建(7)添加草图尺寸约束
31 NXOpen C++创建基本特征-草图的创建(8)尺寸和UI关联





关键代码分享：

1. 
   
2. void lesson31_createSkeTCh::createIPSketch()
   
3. {
   
4. 
   
5.         Sketch *nullSketch(NULL);
   
6.     SketchInPlaceBuilder *sketchInPlaceBuilder1;
   
7.         sketchInPlaceBuilder1 = workPart->Sketches()->CreateNewSketchInPlaceBuilder(nullSketch);
   
8.         sketchInPlaceBuilder1->SetPlaneOption(Sketch::PlaneOptionNewPlane);
   
9. 
   
10.         //sketchInPlaceBuilder1->Plane()->SetMethod(PlaneTypes::MethodTypeFixedZ);
    
11. 
    
12. 
    
13.         // add preference
    
14. 
    
15.         theSession->Preferences()->Sketch()->SetContinuousAutoDimensioning(false);
    
16. 
    
17.         Drafting::PreferencesBuilder *preferencesBuilder1;
    
18.     preferencesBuilder1 = workPart->SettingsManager()->CreatePreferencesBuilder();
    
19.         preferencesBuilder1->AnnotationStyle()->DimensionStyle()->SetAngularDimensionValuePrecision(3);
    
20.         preferencesBuilder1->AnnotationStyle()->DimensionStyle()->SetDimensionValuePrecision(3);
    
21.         preferencesBuilder1->Commit();
    
22. 
    
23.         preferencesBuilder1->Destroy();
    
24. 
    
25. 
    
26.         NXObject *nXObject1;
    
27.         nXObject1 = sketchInPlaceBuilder1->Commit();
    
28. 
    
29.         Sketch *sketch1(dynamic_cast<Sketch *>(nXObject1));
    
30.     Features::Feature *feature1;
    
31.     feature1 = sketch1->Feature();
    
32.         feature1->SetName("XY-Plane-Sketch");
    
33.         
    
34.         sketchInPlaceBuilder1->Destroy();
    
35. 
    
36.         //1  active sketch
    
37. 
    
38.         sketch1->Activate(Sketch::ViewReorientFalse);
    
39.         
    
40.          double height1 = this->expressionHeight1->GetProperties()->GetDouble("Value");
    
41.          double height2 = this->expressionHeight2->GetProperties()->GetDouble("Value");
    
42.          double length = this->expressionLength->GetProperties()->GetDouble("Value");
    
43.         // 2.1  create geometry
    
44. 
    
45.         Point3d startPoint1(0.0, 0.0, 0.0);
    
46.     Point3d endPoint1(0, height1, 0.0);
    
47.     Point3d endPoint2(length, height1, 0.0);
    
48.         Point3d endPoint3(length, height1-height2, 0.0);
    
49.         Point3d origin = sketch1->Origin();
    
50.         Point *originPoint = workPart->Points()->CreatePoint(origin);
    
51. 
    
52.         Line *line1,*line2,*line3,*line4;
    
53.         line1 = workPart->Curves()->CreateLine(startPoint1, endPoint1);
    
54.         line2 = workPart->Curves()->CreateLine(endPoint1, endPoint2);
    
55.         line3 = workPart->Curves()->CreateLine(endPoint2, endPoint3);
    
56.         line4 = workPart->Curves()->CreateLine(endPoint3, startPoint1);
    
57.         // 2.2 add geometry
    
58. 
    
59.         sketch1->AddGeometry(line1,Sketch::InferConstraintsOptionInferCoincidentConstraints);
    
60.         sketch1->AddGeometry(line2,Sketch::InferConstraintsOptionInferCoincidentConstraints);
    
61.         sketch1->AddGeometry(line3,Sketch::InferConstraintsOptionInferCoincidentConstraints);
    
62.         sketch1->AddGeometry(line4,Sketch::InferConstraintsOptionInferCoincidentConstraints);
    
63. 
    
64.         //3  add constraints ( gemo)
    
65. 
    
66.         Sketch::ConstraintGeometry geomline1;
    
67.         geomline1.Geometry = line1;
    
68.         geomline1.PointType = Sketch::ConstraintPointTypeNone;
    
69.         geomline1.SplineDefiningPointIndex = 0;
    
70.         sketch1->CreateVerticalConstraint(geomline1);
    
71. 
    
72.         Sketch::ConstraintGeometry geomline2;
    
73.         geomline2.Geometry = line2;
    
74.         geomline2.PointType = Sketch::ConstraintPointTypeNone;
    
75.         geomline2.SplineDefiningPointIndex = 0;
    
76.         sketch1->CreateHorizontalConstraint(geomline2);
    
77. 
    
78.         Sketch::ConstraintGeometry geomline3;
    
79.         geomline3.Geometry = line3;
    
80.         geomline3.PointType = Sketch::ConstraintPointTypeNone;
    
81.         geomline3.SplineDefiningPointIndex = 0;
    
82.         sketch1->CreateVerticalConstraint(geomline3);
    
83. 
    
84.         Sketch::ConstraintGeometry geomline1_startPoint;
    
85.         geomline1_startPoint.Geometry = line1;
    
86.         geomline1_startPoint.PointType = Sketch::ConstraintPointTypeStartVertex;
    
87.         geomline1.SplineDefiningPointIndex = 0;
    
88.         Sketch::ConstraintGeometry geomline2_originPoint;
    
89.         geomline2_originPoint.Geometry = originPoint;
    
90.         geomline2_originPoint.PointType = Sketch::ConstraintPointTypeNone;
    
91.         geomline2_originPoint.SplineDefiningPointIndex = 0;
    
92.         sketch1->CreateCoincidentConstraint(geomline1_startPoint,geomline2_originPoint);
    
93. 
    
94.         //4  add constraints (dimension)
    
95. 
    
96.          NXObject *nullNXObject(NULL);
    
97. 
    
98. 
    
99.          stringstream s_height1,s_height2,s_length;
    
100.          s_height1 <<height1;
     
101.          s_height2 <<height2;
     
102.          s_length <<length;
     
103. 
     
104.          Expression *expression1,*expression2,*expression3;
     
105.          expression1 = workPart->Expressions()->CreateSystemExpression(s_height1.str());
     
106.     expression2 = workPart->Expressions()->CreateSystemExpression(s_length.str());
     
107.         expression3 = workPart->Expressions()->CreateSystemExpression(s_height2.str());
     
108. 
     
109.         // line1 dimension
     
110. 
     
111.         Sketch::DimensionGeometry dimLine1_startPoint;
     
112.     dimLine1_startPoint.Geometry = line1;
     
113.     dimLine1_startPoint.AssocType = Sketch::AssocTypeStartPoint;
     
114.     dimLine1_startPoint.AssocValue = 0;
     
115.     dimLine1_startPoint.HelpPoint.X = 0.0;
     
116.     dimLine1_startPoint.HelpPoint.Y = 0.0;
     
117.     dimLine1_startPoint.HelpPoint.Z = 0.0;
     
118.     dimLine1_startPoint.View = nullNXObject;
     
119. 
     
120.     Sketch::DimensionGeometry dimLine1_endPoint;
     
121.     dimLine1_endPoint.Geometry = line1;
     
122.     dimLine1_endPoint.AssocType = Sketch::AssocTypeEndPoint;
     
123.     dimLine1_endPoint.AssocValue = 0;
     
124.     dimLine1_endPoint.HelpPoint.X = 0.0;
     
125.     dimLine1_endPoint.HelpPoint.Y = 0.0;
     
126.     dimLine1_endPoint.HelpPoint.Z = 0.0;
     
127.     dimLine1_endPoint.View = nullNXObject;
     
128. 
     
129.         Point3d dimOrigin1(-100, height1/2, 0.0);
     
130. 
     
131.         sketch1->CreateDimension(Sketch::ConstraintTypeParallelDim, dimLine1_startPoint, dimLine1_endPoint, dimOrigin1, expression1, Sketch::DimensionOptionCreateAsDriving);
     
132. 
     
133. 
     
134.         
     
135.         // line2 dimension
     
136. 
     
137.         Sketch::DimensionGeometry dimLine2_startPoint;
     
138.     dimLine2_startPoint.Geometry = line2;
     
139.     dimLine2_startPoint.AssocType = Sketch::AssocTypeStartPoint;
     
140.     dimLine2_startPoint.AssocValue = 0;
     
141.     dimLine2_startPoint.HelpPoint.X = 0.0;
     
142.     dimLine2_startPoint.HelpPoint.Y = 0.0;
     
143.     dimLine2_startPoint.HelpPoint.Z = 0.0;
     
144.     dimLine2_startPoint.View = nullNXObject;
     
145. 
     
146.     Sketch::DimensionGeometry dimLine2_endPoint;
     
147.     dimLine2_endPoint.Geometry = line2;
     
148.     dimLine2_endPoint.AssocType = Sketch::AssocTypeEndPoint;
     
149.     dimLine2_endPoint.AssocValue = 0;
     
150.     dimLine2_endPoint.HelpPoint.X = 0.0;
     
151.     dimLine2_endPoint.HelpPoint.Y = 0.0;
     
152.     dimLine2_endPoint.HelpPoint.Z = 0.0;
     
153.     dimLine2_endPoint.View = nullNXObject;
     
154. 
     
155.         Point3d dimOrigin2(length /2,100 + height1, 0.0);
     
156. 
     
157.         sketch1->CreateDimension(Sketch::ConstraintTypeParallelDim, dimLine2_startPoint, dimLine2_endPoint, dimOrigin2, expression2, Sketch::DimensionOptionCreateAsDriving);
     
158. 
     
159. 
     
160.                
     
161.         // line3 dimension
     
162. 
     
163.         Sketch::DimensionGeometry dimLine3_startPoint;
     
164.     dimLine3_startPoint.Geometry = line3;
     
165.     dimLine3_startPoint.AssocType = Sketch::AssocTypeStartPoint;
     
166.     dimLine3_startPoint.AssocValue = 0;
     
167.     dimLine3_startPoint.HelpPoint.X = 0.0;
     
168.     dimLine3_startPoint.HelpPoint.Y = 0.0;
     
169.     dimLine3_startPoint.HelpPoint.Z = 0.0;
     
170.     dimLine3_startPoint.View = nullNXObject;
     
171. 
     
172.     Sketch::DimensionGeometry dimLine3_endPoint;
     
173.     dimLine3_endPoint.Geometry = line3;
     
174.     dimLine3_endPoint.AssocType = Sketch::AssocTypeEndPoint;
     
175.     dimLine3_endPoint.AssocValue = 0;
     
176.     dimLine3_endPoint.HelpPoint.X = 0.0;
     
177.     dimLine3_endPoint.HelpPoint.Y = 0.0;
     
178.     dimLine3_endPoint.HelpPoint.Z = 0.0;
     
179.     dimLine3_endPoint.View = nullNXObject;
     
180. 
     
181.         Point3d dimOrigin3( 100 + length, height1-height2+ height2 /2 , 0.0);
     
182.          
     
183.         sketch1->CreateDimension(Sketch::ConstraintTypeParallelDim, dimLine3_startPoint, dimLine3_endPoint, dimOrigin3, expression3, Sketch::DimensionOptionCreateAsDriving);
     
184. 
     
185. 
     
186. 
     
187.         //5 update & deactive
     
188.         sketch1->Update();
     
189. 
     
190.         sketch1->Deactivate(Sketch::ViewReorientFalse,Sketch::UpdateLevelModel);
     
191. 
     
192.         delete expression1;
     
193.         delete expression2;
     
194.         delete expression3;
     
195.         
     
196. }
     

复制代码

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PLM之家-NX9.0二次开发实例31 NXOpen C++草图的创建(1)项目介绍.mp4

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PLM之家-NX9.0二次开发实例31 NXOpen C++草图的创建(2)对话框UI设计.mp4

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PLM之家-NX9.0二次开发实例31 NXOpen C++草图的创建(3)项目创建.mp4

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PLM之家-NX9.0二次开发实例31 NXOpen C++草图的创建(4)草图特征创建.mp4

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PLM之家-NX9.0二次开发实例31 NXOpen C++草图的创建(5)添加几何到草图.mp4

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PLM之家-NX9.0二次开发实例31 NXOpen C++草图的创建(6)添加草图几何约束.mp4

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PLM之家-NX9.0二次开发实例31 NXOpen C++草图的创建(7)添加草图尺寸约束.mp4

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PLM之家-NX9.0二次开发实例31 NXOpen C++草图的创建(8)尺寸和UI关联.mp4

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guojie123

支持，不过今天没视频啊

smthan

老大，您的教程很给力哟，什么时候才能膜拜呢？？

加持

视频呢，我在等啊

admin

这部分先更新到这里

45guop

学习一下谢谢

leaf

谢谢分享

璀璨の樱之雨

想要看看啊

椰子酥

奈斯啊。