NX二次开发源码： 创建草图并通过草图做出回转体

admin

通过NX开发进行草图的创建，创建草图过程包括基本曲线的创建以及约束。
草图的约束分为几何约束和尺寸约束，通过代码的约束使得草图完全约束。
草图完成后，可以通过回转体进行旋转，此处直接做出简单的例子。
仅供参考！
2 X0 k5 z9 t( a" s) l0 F
效果如下：
  I$ a1 k7 Y2 D$ @( P1 Z" D) t9 Y5 `' F
7 l7 p4 S6 t6 ^' L- e; i& n
9 p" u, I, H! `% `0 d/ i/ X* f

admin

比较乱，仅供参考
$ d- |3 p5 U7 r
9 ]8 A5 o  {% Y' K$ ~8 J; w8 J" l

1. <p>void basicFeatures::createSketch()
   
2. {</p><p>{
   $ C1 i1 E- y; J, L+ v, e
3.     Session *theSession = Session::GetSession();
   2 v5 h' D$ ~, U  n( \; z) A
4.     Part *workPart(theSession->Parts()->Work());
   
5.     Part *displayPart(theSession->Parts()->Display());
   * u7 [- r& _; Q0 Q( i
6.     Sketch *nullSketch(NULL);
   
7.     SketchInPlaceBuilder *sketchInPlaceBuilder1;
   
8.     sketchInPlaceBuilder1 = workPart->Sketches()->CreateNewSketchInPlaceBuilder(nullSketch);
   
9.     sketchInPlaceBuilder1->Plane()->SetMethod(PlaneTypes::MethodTypeFixedZ);
   
10.     Point3d origin1(0.0, 0.0, 0.0);
    
11.     sketchInPlaceBuilder1->Plane()->SetOrigin(origin1);
    
12.     sketchInPlaceBuilder1->Plane()->Evaluate();</p><p> // set the reference</p><p> theSession->Preferences()->Sketch()->SetCreateInferredConstraints(true);
    
13.    
    . |; c+ x( Y4 I2 s" m: f8 u& O3 g
14.     theSession->Preferences()->Sketch()->SetContinuousAutoDimensioning(false);
    
15.    
    # w2 I2 F) h$ y. F7 j
16.     theSession->Preferences()->Sketch()->SetDimensionLabel(Preferences::SketchPreferences::DimensionLabelTypeExpression);
    - \( V1 [5 f1 U, b
17.    
    
18.     theSession->Preferences()->Sketch()->SetTextSizeFixed(true);
    
19.    
    , X2 g: o/ E7 a4 E! D" {& d! ^
20.     theSession->Preferences()->Sketch()->SetFixedTextSize(3.0);
    
21.    
    . o2 X! V2 U4 ^# a7 A
22.     theSession->Preferences()->Sketch()->SetConstraintSymbolSize(3.0);
    
23.    
    
24.     theSession->Preferences()->Sketch()->SetDisplayObjectColor(false);
    
25.    
    & v9 }" r0 S; n; \5 t
26.     theSession->Preferences()->Sketch()->SetDisplayObjectName(true);</p><p>   
    % ?. f/ d+ C3 h, u$ v
27.     NXObject *nXObject1;
    ) y: ?4 p' j& W2 N; ]# C. z
28.     nXObject1 = sketchInPlaceBuilder1->Commit();
    
29.    
    
30.     Sketch *sketch1(dynamic_cast<Sketch *>(nXObject1));
    
31.     Features::Feature *feature1;
    ; j! Z5 x% A: d) s9 m2 Z
32.     feature1 = sketch1->Feature();</p><p>
    
33.     sketchInPlaceBuilder1->Destroy();</p><p>
    
34. sketch1->Activate(Sketch::ViewReorientFalse);
    
35. 
    
36. // define the dimensions
    6 |& v: k& a2 ^# v2 N
37.     double heigth1 = this->doubleHeight1->GetProperties()->GetDouble("Value");
    
38. double heigth2 = this->doubleHeight2->GetProperties()->GetDouble("Value");
    # Z* t. l# h3 ^
39. double length = this->doubleLength->GetProperties()->GetDouble("Value");
    2 T: [( N6 c' [3 N/ q+ J' O! k
40. char msg1[UF_MAX_EXP_BUFSIZE],msg2[UF_MAX_EXP_BUFSIZE],msg3[UF_MAX_EXP_BUFSIZE];
    
41. sprintf(msg1,"%f",heigth1);
    
42. sprintf(msg2,"%f",heigth2);
      y' t! E/ m2 q! D  k" D% A( c
43. sprintf(msg3,"%f",length);
    & z  J$ Q! {" w. Y1 Q
44. Expression *height1exp,*height2exp,*lengthexp;
    
45. height1exp= workPart->Expressions()->CreateSystemExpression(msg1);
    
46. height2exp= workPart->Expressions()->CreateSystemExpression(msg2);
    
47. lengthexp= workPart->Expressions()->CreateSystemExpression(msg3);
    
48. // these for the dimension position
    
49. Point3d dimOrigin1(-100, heigth1/2, 0.0);
    + b$ \1 @0 g  a5 w1 U( |' {4 p& z& y
50. Point3d dimOrigin2(length/2, heigth1+100, 0.0);
    8 q" |  |4 m# K. U
51. Point3d dimOrigin3(length+100, heigth1-heigth2/2, 0.0);</p><p>  // add curves
    % z- w0 L. @2 B8 g( X- A
52.     Point3d startPoint1(0.0, 0.0, 0.0);
    $ g% w. c7 V# K) f. |
53. Point3d endPoint1(0.0,heigth1,0.0);
    
54. Point3d endPoint2(length,heigth1,0.0);
    ' Q; p5 ?0 {4 O" w( s
55. Point3d endPoint3(length,heigth1-heigth2,0.0);
    7 X5 g+ m8 p# C% U' ]5 T
56.     Line *line1,*line2,*line3,*line4;
    % U+ L1 U' N; ^$ O4 o! H& `
57.     line1 = workPart->Curves()->CreateLine(startPoint1, endPoint1);
    
58. line2 = workPart->Curves()->CreateLine(endPoint1, endPoint2);
    / m* t- o3 D2 Y2 T3 y
59. line3 = workPart->Curves()->CreateLine(endPoint2, endPoint3);
    / v* B' i; h1 {0 C6 K0 L- h
60. line4 = workPart->Curves()->CreateLine(endPoint3, startPoint1);
    * R) c. j+ [1 v* L2 v9 V% I
61. theSession->ActiveSketch()->AddGeometry(line1, Sketch::InferConstraintsOptionInferCoincidentConstraints);
    
62. theSession->ActiveSketch()->AddGeometry(line2, Sketch::InferConstraintsOptionInferCoincidentConstraints);
    
63. theSession->ActiveSketch()->AddGeometry(line3, Sketch::InferConstraintsOptionInferCoincidentConstraints);
    
64. theSession->ActiveSketch()->AddGeometry(line4, Sketch::InferConstraintsOptionInferCoincidentConstraints);
    ) m8 s2 r# {2 _" R+ o
65.    </p><p> // add constraints
    
66. //..
    
67. // for line1
    , N/ _5 n' t' w0 u4 U8 Z
68. Sketch::ConstraintGeometry geopoint1;
    & G$ U5 o3 v0 A
69. geopoint1.Geometry = line1;
    
70. geopoint1.PointType = Sketch::ConstraintPointTypeStartVertex;
    8 w/ o5 `$ V, K$ y$ F# U+ \
71. geopoint1.SplineDefiningPointIndex = 0;
    
72. // find the (0,0,0) point
    
73. Sketch::ConstraintGeometry geopoint2;
    / q0 }8 e: T+ y* u
74. Point *pointOriginal;
    
75. pointOriginal = workPart->Points()->CreatePoint(sketch1->Origin());
    
76. geopoint2.Geometry = pointOriginal;
    
77. geopoint2.PointType = Sketch::ConstraintPointTypeStartVertex;
    6 H' w. _9 P3 M* R
78. geopoint2.SplineDefiningPointIndex = 0;
    . k: s% ~7 T! C4 q  j1 e5 T/ D
79. theSession->ActiveSketch()->CreateCoincidentConstraint(geopoint1,geopoint2);</p><p> Sketch::ConstraintGeometry geoline1;
    
80. geoline1.Geometry = line1;
    $ v5 c+ h) V' X* u2 ^# ~% q9 v# z1 q
81. geoline1.PointType = Sketch::ConstraintPointTypeNone;
    + B* h% P! |% F
82. geoline1.SplineDefiningPointIndex = 0;
    8 D8 `* \4 T+ Y; a: T( ?4 `
83. theSession->ActiveSketch()->CreateVerticalConstraint(geoline1);
    , i0 X- n  P+ u% R5 P; n. Y
84. //..
    
85. // for line2
    . n+ q' m& h: A& C- \1 t+ ^
86. Sketch::ConstraintGeometry geoline2;
    ( M- I8 z! A; ^; T& k' p, o6 \% g
87. geoline2.Geometry = line2;
    + ^: ]. R  }! n- E( ~  C
88. geoline2.PointType = Sketch::ConstraintPointTypeNone;
    
89. geoline2.SplineDefiningPointIndex = 0;
    
90. theSession->ActiveSketch()->CreateHorizontalConstraint(geoline2);
    1 @% Z7 x1 X9 m4 J5 A
91. //..
    4 S" V4 \# n0 u6 u& B1 {, A
92. // for line3
    
93. Sketch::ConstraintGeometry geoline3;
    
94. geoline3.Geometry = line3;
    
95. geoline3.PointType = Sketch::ConstraintPointTypeNone;
    , J# \' S: r+ [
96. geoline3.SplineDefiningPointIndex = 0;
    8 A* j; l, a( A3 ]: c2 W
97. theSession->ActiveSketch()->CreateVerticalConstraint(geoline3);
    
98. // use this method to create the constraints
    
99. /*SketchConstraintBuilder *line3constraint;
    
100. line3constraint= workPart->Sketches()->CreateConstraintBuilder();
     
101. line3constraint->GeometryToConstrain()->Add(line3);
     
102. line3constraint->SetConstraintType(SketchConstraintBuilder::ConstraintVertical);
     
103. line3constraint->Commit();
     
104.     line3constraint->Destroy();*/
     
105.    
     & L' w  M* N  n
106. // add dimension
     , X4 n9 h' l# K7 W# p7 y
107. //..
     , d4 p( {; C& x* ?; z" V, f
108. // for line1
       U% \7 O3 I% l5 |3 Y
109. Sketch::DimensionGeometry dimobject1_start;
     
110. dimobject1_start.AssocType = Sketch::AssocTypeStartPoint;
     + z1 V% i4 }: t& ]( R3 v0 V' O
111. dimobject1_start.AssocValue = 0;
     & l0 a& J+ B3 j' p; W4 s% _6 F$ T0 ~
112. dimobject1_start.Geometry = line1;
     $ n) f6 o1 |- o" z
113. dimobject1_start.HelpPoint.X = 0 ;
     / K" a8 g8 g9 k) A% s5 X4 a: P
114. dimobject1_start.HelpPoint.Y = 0 ;
     3 K& {6 D0 g( _7 s: _2 f
115. dimobject1_start.HelpPoint.Z = 0 ;
     9 x7 @3 f  [' p7 M1 Q5 J
116. NXObject *nullNXObject1(NULL);
     & Z0 _( x+ M: B: E6 r$ r( f
117. dimobject1_start.View = nullNXObject1;</p><p> Sketch::DimensionGeometry dimobject1_end;
     $ c; T" M. [- }/ [; i5 ~
118. dimobject1_end.AssocType = Sketch::AssocTypeEndPoint;
     
119. dimobject1_end.AssocValue = 0;
     7 B. y4 l7 ?& [) X; l
120. dimobject1_end.Geometry = line1;
     " U* U( ?  U$ ?4 y* G; |; W
121. dimobject1_end.HelpPoint.X = 0 ;
     $ v- L) H* }% i0 c9 |/ k( l
122. dimobject1_end.HelpPoint.Y = 0 ;
     
123. dimobject1_end.HelpPoint.Z = 0 ;
     
124. dimobject1_end.View = nullNXObject1;</p><p> SketchDimensionalConstraint *sketchDimensionalConstraint1 = theSession->ActiveSketch()->CreateDimension(Sketch::ConstraintTypeVerticalDim,dimobject1_start,dimobject1_end,dimOrigin1,height1exp,Sketch::DimensionOptionCreateAsDriving);</p><p>    Annotations::Dimension *dimension1;
     
125.     dimension1 = sketchDimensionalConstraint1->AssociatedDimension();</p><p>
     # A; r- s3 ~7 |  V% X4 F
126. //..
     
127. // for line2
     , v4 |3 y& a& N4 [
128. Sketch::DimensionGeometry dimobject2_start;
     
129. dimobject2_start.AssocType = Sketch::AssocTypeStartPoint;
     ( w4 h, j/ B+ x- q
130. dimobject2_start.AssocValue = 0;
     
131. dimobject2_start.Geometry = line2;
     * g5 Y* E& E0 D0 N. i6 D9 p& p
132. dimobject2_start.HelpPoint.X = 0 ;
     
133. dimobject2_start.HelpPoint.Y = 0 ;
     
134. dimobject2_start.HelpPoint.Z = 0 ;
     
135. dimobject2_start.View = nullNXObject1;</p><p> Sketch::DimensionGeometry dimobject2_end;
     , Z3 k  N) Z+ d+ d" U
136. dimobject2_end.AssocType = Sketch::AssocTypeEndPoint;
     ! {2 t& |4 V7 W$ K* p% A3 N
137. dimobject2_end.AssocValue = 0;
     9 d# u, F! K) Y/ r; ]
138. dimobject2_end.Geometry = line2;
     
139. dimobject2_end.HelpPoint.X = 0 ;
     $ o* \  k0 E  Y0 w# H% m& @
140. dimobject2_end.HelpPoint.Y = 0 ;
     
141. dimobject2_end.HelpPoint.Z = 0 ;
     
142. dimobject2_end.View = nullNXObject1;</p><p> SketchDimensionalConstraint *sketchDimensionalConstraint2 = theSession->ActiveSketch()->CreateDimension(Sketch::ConstraintTypeHorizontalDim,dimobject2_start,dimobject2_end,dimOrigin2,lengthexp,Sketch::DimensionOptionCreateAsDriving);</p><p>    Annotations::Dimension *dimension2;
     * J9 l/ C& f6 t- {
143.     dimension2 = sketchDimensionalConstraint2->AssociatedDimension();</p><p> // for line3
     
144. Sketch::DimensionGeometry dimobject3_start;
     6 w" K! Y" P+ D
145. dimobject3_start.AssocType = Sketch::AssocTypeStartPoint;
     8 |( V8 d9 y& `8 G
146. dimobject3_start.AssocValue = 0;
     ! L. ?* _- d, X. Y+ I0 Q. }
147. dimobject3_start.Geometry = line3;
     $ W7 W5 @7 d' t$ L0 u% n
148. dimobject3_start.HelpPoint.X = 0 ;
     
149. dimobject3_start.HelpPoint.Y = 0 ;
     
150. dimobject3_start.HelpPoint.Z = 0 ;
     
151. dimobject3_start.View = nullNXObject1;</p><p> Sketch::DimensionGeometry dimobject3_end;
     % B, d9 E6 I' o+ o# a7 l
152. dimobject3_end.AssocType = Sketch::AssocTypeEndPoint;
     . v' W( N0 C' u
153. dimobject3_end.AssocValue = 0;
     * m7 J# v7 {/ b- `% f
154. dimobject3_end.Geometry = line3;
     * t2 k. y9 J8 D; g4 A
155. dimobject3_end.HelpPoint.X = 0 ;
     5 O0 D! [  z3 s& E2 N, \. \
156. dimobject3_end.HelpPoint.Y = 0 ;
     * p" v9 o7 W& X+ ~" @9 w
157. dimobject3_end.HelpPoint.Z = 0 ;
       R7 P7 _' G4 E; q  e$ S
158. dimobject3_end.View = nullNXObject1;</p><p> SketchDimensionalConstraint *sketchDimensionalConstraint3 = theSession->ActiveSketch()->CreateDimension(Sketch::ConstraintTypeVerticalDim,dimobject3_start,dimobject3_end,dimOrigin3,height2exp,Sketch::DimensionOptionCreateAsDriving);</p><p>    Annotations::Dimension *dimension3;
     8 U+ [8 I$ s* o+ `# |3 J5 R/ w$ {3 h( ]
159.     dimension3 = sketchDimensionalConstraint3->AssociatedDimension();</p><p> //workPart->Expressions()->Delete(height1exp);</p><p> theSession->ActiveSketch()->Update();</p><p> theSession->ActiveSketch()->Deactivate(Sketch::ViewReorientFalse,Sketch::UpdateLevelModel);
     % O, g- [, h$ F2 L& ]
160. 
     
161. /*</p><p> // revolve the body</p><p> */
     5 ^, V4 [/ J' M
162. Features::Feature *nullFeatures_Feature(NULL);
     ; u7 |" p  I& y* j. [  c1 N+ L/ J
163. Features::RevolveBuilder *revolveBuilder1;
     
164.     revolveBuilder1 = workPart->Features()->CreateRevolveBuilder(nullFeatures_Feature);
     
165.     revolveBuilder1->Limits()->StartExtend()->Value()->SetRightHandSide("0");
     
166.     revolveBuilder1->Limits()->EndExtend()->Value()->SetRightHandSide("360");
     6 ?: a$ n3 F1 A- T3 Z" u9 M% P" n! x
167.     revolveBuilder1->SetTolerance(0.01);
     4 f! N3 _7 I' V6 n+ e: @
168. Section *section1;
     ! g* B8 {  j8 P) x
169.     section1 = workPart->Sections()->CreateSection(0.0095, 0.01, 0.5);
     
170.     revolveBuilder1->SetSection(section1);
     
171.    
     ' ~$ F- {& K7 J; g7 w# b4 O- @
172. section1->SetAllowedEntityTypes(Section::AllowTypesOnlyCurves);
     . m5 E1 |6 |0 r& j/ T
173.    
     
174. std::vector<Features::Feature *> features1(1);
     * b! _: @  c$ `9 A* i
175.     features1[0] = feature1;
     + g) Q' j9 ]: a1 }/ o8 ]0 r, a! M9 J
176.     CurveFeatureRule *curveFeatureRule1;
     1 O' t8 ^9 {6 z. q7 b: D
177.     curveFeatureRule1 = workPart->ScRuleFactory()->CreateRuleCurveFeature(features1);
     # {% U  P/ ?4 Z, X! U2 D
178.    
     1 j7 p9 E/ \' w+ k8 r
179.     section1->AllowSelfIntersection(false);
     . W5 X/ w! Q  T: s8 \( y5 @$ G: R
180.    
     
181.     std::vector<SelectionIntentRule *> rules1(1);
     6 Q, Z9 a6 x9 T. k; G3 L" k* k
182.     rules1[0] = curveFeatureRule1;
     
183.     NXObject *nullNXObject(NULL);
     6 Z3 g4 X) m. B% o/ l
184.     Point3d helpPoint1(0.0, 0.0, 0.0);
       A! L6 h" a+ g  p& `
185.     section1->AddToSection(rules1, nullNXObject, nullNXObject, nullNXObject, helpPoint1, Section::ModeCreate, false);
     
186. 
     
187. // define the axis</p><p>    Direction *direction1;
     
188.     direction1 = workPart->Directions()->CreateDirection(line2, SenseForward, SmartObject::UpdateOptionWithinModeling);
     
189.    
     4 q8 L" G# c7 [( Q; h; k  o0 a2 B
190.     Point *nullPoint(NULL);
     2 O9 ^& F/ {) B* o
191.     Axis *axis1;
     
192.     axis1 = workPart->Axes()->CreateAxis(nullPoint, direction1, SmartObject::UpdateOptionWithinModeling);
     ; [( P# c4 A: c0 y: j# z! D/ r
193. 
     2 F# w- P. L% f5 P
194. revolveBuilder1->SetAxis(axis1);</p><p> // commit feature
     3 J# [2 T3 ~2 T
195. Features::Feature *feature2;
     
196.     feature2 = revolveBuilder1->CommitFeature();
     
197. revolveBuilder1->Destroy();
     
198. }</p><p>}
     
199. </p><p> </p>

复制代码