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。
- s( s5 l; }: M) S& x, O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！
' @+ {) J+ ]/ d( R6 C
效果如下：
# `3 c( ~, \4 I+ _1 H5 t

admin

比较乱，仅供参考

1. <p>void basicFeatures::createSketch()
   
2. {</p><p>{
   7 F0 P  O% A6 w, I% x% N1 f$ m
3.     Session *theSession = Session::GetSession();
   , y, K- U' k! {4 t
4.     Part *workPart(theSession->Parts()->Work());
   
5.     Part *displayPart(theSession->Parts()->Display());
   
6.     Sketch *nullSketch(NULL);
   0 Z( u! b% `1 j. d
7.     SketchInPlaceBuilder *sketchInPlaceBuilder1;
   , Y' b" n% J1 Q
8.     sketchInPlaceBuilder1 = workPart->Sketches()->CreateNewSketchInPlaceBuilder(nullSketch);
   / f4 X8 z0 w8 y9 s4 G, P5 D
9.     sketchInPlaceBuilder1->Plane()->SetMethod(PlaneTypes::MethodTypeFixedZ);
   , M7 h# K( `: ^8 Q
10.     Point3d origin1(0.0, 0.0, 0.0);
    
11.     sketchInPlaceBuilder1->Plane()->SetOrigin(origin1);
    5 Z0 S0 e# {$ n) I$ G1 x. S0 c
12.     sketchInPlaceBuilder1->Plane()->Evaluate();</p><p> // set the reference</p><p> theSession->Preferences()->Sketch()->SetCreateInferredConstraints(true);
    $ U$ \5 c2 h* C) {) r; |
13.    
    
14.     theSession->Preferences()->Sketch()->SetContinuousAutoDimensioning(false);
      Z. y6 @' H. q$ D) J: k
15.    
    
16.     theSession->Preferences()->Sketch()->SetDimensionLabel(Preferences::SketchPreferences::DimensionLabelTypeExpression);
    . P) T, y7 G$ f; H$ _* R& d
17.    
    5 _9 K. f1 M+ L
18.     theSession->Preferences()->Sketch()->SetTextSizeFixed(true);
    
19.    
    & L, a+ I+ X+ _7 H2 u0 j! |
20.     theSession->Preferences()->Sketch()->SetFixedTextSize(3.0);
    ( y; j3 h* v. |1 `1 W  R; ?
21.    
    
22.     theSession->Preferences()->Sketch()->SetConstraintSymbolSize(3.0);
    
23.    
    
24.     theSession->Preferences()->Sketch()->SetDisplayObjectColor(false);
    
25.    
    
26.     theSession->Preferences()->Sketch()->SetDisplayObjectName(true);</p><p>   
    
27.     NXObject *nXObject1;
    ! ?; ~9 Y9 v% U" ?- X& H
28.     nXObject1 = sketchInPlaceBuilder1->Commit();
    
29.    
    
30.     Sketch *sketch1(dynamic_cast<Sketch *>(nXObject1));
    # e+ c& m8 ^" p; h# l
31.     Features::Feature *feature1;
    
32.     feature1 = sketch1->Feature();</p><p>
    
33.     sketchInPlaceBuilder1->Destroy();</p><p>
    
34. sketch1->Activate(Sketch::ViewReorientFalse);
    & ?, D9 J; _5 j& [. a( G
35. 
    
36. // define the dimensions
    
37.     double heigth1 = this->doubleHeight1->GetProperties()->GetDouble("Value");
    
38. double heigth2 = this->doubleHeight2->GetProperties()->GetDouble("Value");
    
39. double length = this->doubleLength->GetProperties()->GetDouble("Value");
    
40. char msg1[UF_MAX_EXP_BUFSIZE],msg2[UF_MAX_EXP_BUFSIZE],msg3[UF_MAX_EXP_BUFSIZE];
    ' r: d& A( s# W" y3 a( G; j7 f
41. sprintf(msg1,"%f",heigth1);
    6 x+ X7 y3 N) [6 H4 d  ^1 S
42. sprintf(msg2,"%f",heigth2);
    
43. sprintf(msg3,"%f",length);
    1 [$ H# J. r9 |9 Y; |4 c
44. Expression *height1exp,*height2exp,*lengthexp;
    2 f1 ^% M" m1 ~1 e* a
45. height1exp= workPart->Expressions()->CreateSystemExpression(msg1);
    
46. height2exp= workPart->Expressions()->CreateSystemExpression(msg2);
    - Q6 o( r7 [- b: M$ U) v
47. lengthexp= workPart->Expressions()->CreateSystemExpression(msg3);
    
48. // these for the dimension position
    3 H! Z5 i, s+ ^6 V$ X, C
49. Point3d dimOrigin1(-100, heigth1/2, 0.0);
    
50. Point3d dimOrigin2(length/2, heigth1+100, 0.0);
    ( h# \( G, t- Z% t' f, [  d0 G& L
51. Point3d dimOrigin3(length+100, heigth1-heigth2/2, 0.0);</p><p>  // add curves
    
52.     Point3d startPoint1(0.0, 0.0, 0.0);
      W/ Z: b9 R: S. l1 T: s( j% ?8 I4 D
53. Point3d endPoint1(0.0,heigth1,0.0);
    
54. Point3d endPoint2(length,heigth1,0.0);
    ( `5 `) ]0 W& }
55. Point3d endPoint3(length,heigth1-heigth2,0.0);
    
56.     Line *line1,*line2,*line3,*line4;
    ! V- r' u  F& J- L+ N) k  }
57.     line1 = workPart->Curves()->CreateLine(startPoint1, endPoint1);
    
58. line2 = workPart->Curves()->CreateLine(endPoint1, endPoint2);
    : J8 B% z, F% P+ i& [
59. line3 = workPart->Curves()->CreateLine(endPoint2, endPoint3);
    
60. line4 = workPart->Curves()->CreateLine(endPoint3, startPoint1);
    
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);
    
65.    </p><p> // add constraints
    
66. //..
    1 `; B: }' [% K4 d) H( R! @, g  P
67. // for line1
    
68. Sketch::ConstraintGeometry geopoint1;
    
69. geopoint1.Geometry = line1;
    5 d0 @0 N2 U  t2 z! T/ Q/ Z& k$ a+ s
70. geopoint1.PointType = Sketch::ConstraintPointTypeStartVertex;
    
71. geopoint1.SplineDefiningPointIndex = 0;
    
72. // find the (0,0,0) point
    / \7 T" @# j- |( y3 `) a7 `
73. Sketch::ConstraintGeometry geopoint2;
    
74. Point *pointOriginal;
    
75. pointOriginal = workPart->Points()->CreatePoint(sketch1->Origin());
    : D7 g5 V" e% ^* s0 b* t$ }2 K: t
76. geopoint2.Geometry = pointOriginal;
    ; v+ U+ l" r# M/ [' m2 ~. b1 ~
77. geopoint2.PointType = Sketch::ConstraintPointTypeStartVertex;
    
78. geopoint2.SplineDefiningPointIndex = 0;
    
79. theSession->ActiveSketch()->CreateCoincidentConstraint(geopoint1,geopoint2);</p><p> Sketch::ConstraintGeometry geoline1;
    ' P& A% N7 E$ n6 w6 P! R5 s
80. geoline1.Geometry = line1;
    
81. geoline1.PointType = Sketch::ConstraintPointTypeNone;
    
82. geoline1.SplineDefiningPointIndex = 0;
    
83. theSession->ActiveSketch()->CreateVerticalConstraint(geoline1);
    
84. //..
    
85. // for line2
    " i- Z6 s" W1 b% a% H
86. Sketch::ConstraintGeometry geoline2;
    5 S5 y7 H' D, f( D. o6 W3 h
87. geoline2.Geometry = line2;
    
88. geoline2.PointType = Sketch::ConstraintPointTypeNone;
    
89. geoline2.SplineDefiningPointIndex = 0;
    
90. theSession->ActiveSketch()->CreateHorizontalConstraint(geoline2);
    
91. //..
    
92. // for line3
    
93. Sketch::ConstraintGeometry geoline3;
    
94. geoline3.Geometry = line3;
    
95. geoline3.PointType = Sketch::ConstraintPointTypeNone;
    
96. geoline3.SplineDefiningPointIndex = 0;
    6 b7 ^0 I6 a- s. U
97. theSession->ActiveSketch()->CreateVerticalConstraint(geoline3);
    1 z' {. J, N! K; _  F2 j# f
98. // use this method to create the constraints
    - b" j# [& Q9 `# R' A
99. /*SketchConstraintBuilder *line3constraint;
    
100. line3constraint= workPart->Sketches()->CreateConstraintBuilder();
     ) m# S1 a, L, D1 s
101. line3constraint->GeometryToConstrain()->Add(line3);
     
102. line3constraint->SetConstraintType(SketchConstraintBuilder::ConstraintVertical);
     
103. line3constraint->Commit();
     
104.     line3constraint->Destroy();*/
     $ o# L/ P( M  W6 R9 G% Y' O6 J
105.    
     * H$ {& v  X) R& I9 P
106. // add dimension
     / Z! i  I/ m; ~5 i/ o7 p# I$ \7 ^" M
107. //..
     
108. // for line1
     9 x3 L5 k. v* X* m' B
109. Sketch::DimensionGeometry dimobject1_start;
     
110. dimobject1_start.AssocType = Sketch::AssocTypeStartPoint;
     " s+ T  w+ p3 s7 Y. M
111. dimobject1_start.AssocValue = 0;
     
112. dimobject1_start.Geometry = line1;
     
113. dimobject1_start.HelpPoint.X = 0 ;
     2 e' ~1 @( i! |
114. dimobject1_start.HelpPoint.Y = 0 ;
     
115. dimobject1_start.HelpPoint.Z = 0 ;
     
116. NXObject *nullNXObject1(NULL);
     
117. dimobject1_start.View = nullNXObject1;</p><p> Sketch::DimensionGeometry dimobject1_end;
     
118. dimobject1_end.AssocType = Sketch::AssocTypeEndPoint;
     . c7 f- ]) n: x2 L0 r) u6 O
119. dimobject1_end.AssocValue = 0;
     
120. dimobject1_end.Geometry = line1;
     , N) ^, q7 r% n2 \$ y) X
121. dimobject1_end.HelpPoint.X = 0 ;
     
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>
     
126. //..
     
127. // for line2
     
128. Sketch::DimensionGeometry dimobject2_start;
     
129. dimobject2_start.AssocType = Sketch::AssocTypeStartPoint;
     8 ]3 u" y; c9 v$ k) y
130. dimobject2_start.AssocValue = 0;
     
131. dimobject2_start.Geometry = line2;
     
132. dimobject2_start.HelpPoint.X = 0 ;
     ! A! p0 A9 U5 c4 X( ^
133. dimobject2_start.HelpPoint.Y = 0 ;
     
134. dimobject2_start.HelpPoint.Z = 0 ;
     8 N0 ^( A$ }7 H( D, [
135. dimobject2_start.View = nullNXObject1;</p><p> Sketch::DimensionGeometry dimobject2_end;
     , q: Z2 c- }, x7 x2 {6 \7 W
136. dimobject2_end.AssocType = Sketch::AssocTypeEndPoint;
     2 }( b1 f* b4 D; T1 f: F) u
137. dimobject2_end.AssocValue = 0;
     
138. dimobject2_end.Geometry = line2;
     
139. dimobject2_end.HelpPoint.X = 0 ;
     
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;
     
143.     dimension2 = sketchDimensionalConstraint2->AssociatedDimension();</p><p> // for line3
     
144. Sketch::DimensionGeometry dimobject3_start;
     + W) f8 ?% w- @  h' F1 [
145. dimobject3_start.AssocType = Sketch::AssocTypeStartPoint;
     9 A  _3 G: F! Z5 k6 b
146. dimobject3_start.AssocValue = 0;
     
147. dimobject3_start.Geometry = line3;
     ( ]3 G  r( d- E# K! T
148. dimobject3_start.HelpPoint.X = 0 ;
     0 O4 d* x2 j8 {- @
149. dimobject3_start.HelpPoint.Y = 0 ;
     
150. dimobject3_start.HelpPoint.Z = 0 ;
     
151. dimobject3_start.View = nullNXObject1;</p><p> Sketch::DimensionGeometry dimobject3_end;
     
152. dimobject3_end.AssocType = Sketch::AssocTypeEndPoint;
     
153. dimobject3_end.AssocValue = 0;
     
154. dimobject3_end.Geometry = line3;
     9 @7 J6 Q; g5 W% k/ R
155. dimobject3_end.HelpPoint.X = 0 ;
     
156. dimobject3_end.HelpPoint.Y = 0 ;
     * p* h" `2 Z" f& {- |
157. dimobject3_end.HelpPoint.Z = 0 ;
     7 T. q3 N, u8 P: F9 L
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;
     
159.     dimension3 = sketchDimensionalConstraint3->AssociatedDimension();</p><p> //workPart->Expressions()->Delete(height1exp);</p><p> theSession->ActiveSketch()->Update();</p><p> theSession->ActiveSketch()->Deactivate(Sketch::ViewReorientFalse,Sketch::UpdateLevelModel);
     2 B: K0 [7 [8 Z
160. 
     $ ?, T8 p% [! Z
161. /*</p><p> // revolve the body</p><p> */
     ; n9 J/ \; P. c! d/ [( y
162. Features::Feature *nullFeatures_Feature(NULL);
     ; c+ m' u: h6 z! Q8 v1 e3 w. m: v
163. Features::RevolveBuilder *revolveBuilder1;
     
164.     revolveBuilder1 = workPart->Features()->CreateRevolveBuilder(nullFeatures_Feature);
     
165.     revolveBuilder1->Limits()->StartExtend()->Value()->SetRightHandSide("0");
     & F. d$ f9 s# @: e+ f* C" B" \
166.     revolveBuilder1->Limits()->EndExtend()->Value()->SetRightHandSide("360");
     1 k6 S) F0 _; [$ X& p3 n9 V
167.     revolveBuilder1->SetTolerance(0.01);
     
168. Section *section1;
     % e$ B2 S2 O" `* G6 M
169.     section1 = workPart->Sections()->CreateSection(0.0095, 0.01, 0.5);
     
170.     revolveBuilder1->SetSection(section1);
     
171.    
     & t1 C7 z& D- m3 L2 M; [, B% s9 T
172. section1->SetAllowedEntityTypes(Section::AllowTypesOnlyCurves);
       ?6 {& b  \, t$ a* p' u7 ~- v, I
173.    
     2 f7 \: X: o+ B. N0 v% t
174. std::vector<Features::Feature *> features1(1);
     0 W1 g! H6 W: y' f3 j; S
175.     features1[0] = feature1;
     
176.     CurveFeatureRule *curveFeatureRule1;
     1 m" F5 W  g1 P# j* t9 ]' |
177.     curveFeatureRule1 = workPart->ScRuleFactory()->CreateRuleCurveFeature(features1);
     6 j- b" o/ ]/ G# Z. j- e) q* M
178.    
     2 [5 F& y. l* y; @3 i) S. R2 M$ d! h
179.     section1->AllowSelfIntersection(false);
     
180.    
     
181.     std::vector<SelectionIntentRule *> rules1(1);
     
182.     rules1[0] = curveFeatureRule1;
     
183.     NXObject *nullNXObject(NULL);
     
184.     Point3d helpPoint1(0.0, 0.0, 0.0);
     
185.     section1->AddToSection(rules1, nullNXObject, nullNXObject, nullNXObject, helpPoint1, Section::ModeCreate, false);
     
186. 
     0 r6 u) x" q% ?% Y& y- i
187. // define the axis</p><p>    Direction *direction1;
     : |- C0 t. H2 R/ ?# @9 Z0 `$ f+ |: i
188.     direction1 = workPart->Directions()->CreateDirection(line2, SenseForward, SmartObject::UpdateOptionWithinModeling);
     - |% i6 H) _, w8 K
189.    
     ' N; s/ L0 \* s# _: B8 d0 g, G. G
190.     Point *nullPoint(NULL);
     0 P/ u1 b8 t4 L# C/ C
191.     Axis *axis1;
     & u5 o$ @! n5 ~$ `" V
192.     axis1 = workPart->Axes()->CreateAxis(nullPoint, direction1, SmartObject::UpdateOptionWithinModeling);
     
193. 
     7 C, i2 e, @5 p( ?
194. revolveBuilder1->SetAxis(axis1);</p><p> // commit feature
     0 Q9 Z; p, P1 F5 o# t+ Y
195. Features::Feature *feature2;
     
196.     feature2 = revolveBuilder1->CommitFeature();
     ( @9 \8 J- h8 p
197. revolveBuilder1->Destroy();
     
198. }</p><p>}
     
199. </p><p> </p>

复制代码

9 U$ P& W7 v* B; d7 h