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。
, X; X) R+ q3 n9 X+ C! m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！
/ F- A4 [$ e. ~$ H' ?
效果如下：

admin

比较乱，仅供参考

8 C7 \/ T* C6 \1 {+ Y

1. <p>void basicFeatures::createSketch()
   5 F# G: a" F* f1 y" `4 d: H, W
2. {</p><p>{
   
3.     Session *theSession = Session::GetSession();
   
4.     Part *workPart(theSession->Parts()->Work());
   
5.     Part *displayPart(theSession->Parts()->Display());
   
6.     Sketch *nullSketch(NULL);
   & \' b9 a) b  ]- ^4 G
7.     SketchInPlaceBuilder *sketchInPlaceBuilder1;
   
8.     sketchInPlaceBuilder1 = workPart->Sketches()->CreateNewSketchInPlaceBuilder(nullSketch);
   ) M/ x- K1 A) ]* Z( z9 B3 p! c+ I
9.     sketchInPlaceBuilder1->Plane()->SetMethod(PlaneTypes::MethodTypeFixedZ);
   + E7 x, T& A% Y4 t. p" M4 n: \+ m
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);
    ( M) B% O, t, M% S  j  x2 p& W
13.    
    
14.     theSession->Preferences()->Sketch()->SetContinuousAutoDimensioning(false);
    
15.    
    
16.     theSession->Preferences()->Sketch()->SetDimensionLabel(Preferences::SketchPreferences::DimensionLabelTypeExpression);
    ) q/ ]* ^( E- o  n
17.    
    / L0 [) K5 L2 Q' X# B' \
18.     theSession->Preferences()->Sketch()->SetTextSizeFixed(true);
    
19.    
    
20.     theSession->Preferences()->Sketch()->SetFixedTextSize(3.0);
    : t  [1 b6 O7 r( n$ R
21.    
    
22.     theSession->Preferences()->Sketch()->SetConstraintSymbolSize(3.0);
    5 R; c6 C0 H8 q3 N
23.    
    . q; h/ P' k8 B9 @1 I
24.     theSession->Preferences()->Sketch()->SetDisplayObjectColor(false);
    1 |% x+ k3 g4 d+ `  F" \" L- ^; Q6 e3 p
25.    
    9 L$ r6 `" D6 G* u" l: g
26.     theSession->Preferences()->Sketch()->SetDisplayObjectName(true);</p><p>   
    " z- W1 z4 O% h
27.     NXObject *nXObject1;
    2 Z$ y- T- {  Z
28.     nXObject1 = sketchInPlaceBuilder1->Commit();
    ! j. P3 [2 `, u+ g) |' j
29.    
    5 c, M# o/ f7 k4 k5 o1 j! `
30.     Sketch *sketch1(dynamic_cast<Sketch *>(nXObject1));
    
31.     Features::Feature *feature1;
    
32.     feature1 = sketch1->Feature();</p><p>
    , R3 g" F4 `5 ~: q; N1 m! y
33.     sketchInPlaceBuilder1->Destroy();</p><p>
    & c9 ~6 \4 j3 c7 M
34. sketch1->Activate(Sketch::ViewReorientFalse);
    ! V5 E7 r# |! X
35. 
    
36. // define the dimensions
    7 U* |% m/ d% K# b
37.     double heigth1 = this->doubleHeight1->GetProperties()->GetDouble("Value");
    ' t& I) b3 X, B
38. double heigth2 = this->doubleHeight2->GetProperties()->GetDouble("Value");
    7 G% @% X5 ^0 g( |  Z
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];
    
41. sprintf(msg1,"%f",heigth1);
    
42. sprintf(msg2,"%f",heigth2);
    
43. sprintf(msg3,"%f",length);
    3 `8 l5 C( {7 U( ?
44. Expression *height1exp,*height2exp,*lengthexp;
    & J0 u- R6 e( _
45. height1exp= workPart->Expressions()->CreateSystemExpression(msg1);
    
46. height2exp= workPart->Expressions()->CreateSystemExpression(msg2);
    ! z" x8 Z2 h0 ]" q* Y. {
47. lengthexp= workPart->Expressions()->CreateSystemExpression(msg3);
    " d7 W6 u* S4 W
48. // these for the dimension position
    
49. Point3d dimOrigin1(-100, heigth1/2, 0.0);
    
50. Point3d dimOrigin2(length/2, heigth1+100, 0.0);
    
51. Point3d dimOrigin3(length+100, heigth1-heigth2/2, 0.0);</p><p>  // add curves
    3 t- N# {- H$ W' v& s: b" b
52.     Point3d startPoint1(0.0, 0.0, 0.0);
    
53. Point3d endPoint1(0.0,heigth1,0.0);
    
54. Point3d endPoint2(length,heigth1,0.0);
    
55. Point3d endPoint3(length,heigth1-heigth2,0.0);
    
56.     Line *line1,*line2,*line3,*line4;
    
57.     line1 = workPart->Curves()->CreateLine(startPoint1, endPoint1);
    
58. line2 = workPart->Curves()->CreateLine(endPoint1, endPoint2);
    
59. line3 = workPart->Curves()->CreateLine(endPoint2, endPoint3);
    $ F% ~1 D9 U( i) w( o5 }1 @9 i
60. line4 = workPart->Curves()->CreateLine(endPoint3, startPoint1);
    ; \+ Z3 x" M& b' _+ C( g* J
61. theSession->ActiveSketch()->AddGeometry(line1, Sketch::InferConstraintsOptionInferCoincidentConstraints);
    
62. theSession->ActiveSketch()->AddGeometry(line2, Sketch::InferConstraintsOptionInferCoincidentConstraints);
    % ~* D9 Q4 ~1 q+ P) ~6 s* E/ M/ v9 _
63. theSession->ActiveSketch()->AddGeometry(line3, Sketch::InferConstraintsOptionInferCoincidentConstraints);
    
64. theSession->ActiveSketch()->AddGeometry(line4, Sketch::InferConstraintsOptionInferCoincidentConstraints);
    ! @! z" u4 `  y3 n* L$ Y* ^! H
65.    </p><p> // add constraints
    , Y  r( L% v8 v5 m
66. //..
    
67. // for line1
    1 a7 r% t; X5 ]1 T: i/ a2 l+ T
68. Sketch::ConstraintGeometry geopoint1;
    
69. geopoint1.Geometry = line1;
    $ y* D: I5 R5 S8 \# n/ y2 W
70. geopoint1.PointType = Sketch::ConstraintPointTypeStartVertex;
    $ E* b5 d9 e6 j0 }# A
71. geopoint1.SplineDefiningPointIndex = 0;
    
72. // find the (0,0,0) point
    
73. Sketch::ConstraintGeometry geopoint2;
    ' R* o0 m- N  i" X
74. Point *pointOriginal;
    
75. pointOriginal = workPart->Points()->CreatePoint(sketch1->Origin());
    
76. geopoint2.Geometry = pointOriginal;
    * m4 ~+ U7 C% ^9 T" @, ]
77. geopoint2.PointType = Sketch::ConstraintPointTypeStartVertex;
    ; l) D8 ~6 x4 G1 J( A! y
78. geopoint2.SplineDefiningPointIndex = 0;
    
79. theSession->ActiveSketch()->CreateCoincidentConstraint(geopoint1,geopoint2);</p><p> Sketch::ConstraintGeometry geoline1;
    
80. geoline1.Geometry = line1;
    + g# L: j, E5 M7 p
81. geoline1.PointType = Sketch::ConstraintPointTypeNone;
    
82. geoline1.SplineDefiningPointIndex = 0;
    9 h/ [4 G" @1 v  p; Z$ w7 s" s
83. theSession->ActiveSketch()->CreateVerticalConstraint(geoline1);
    
84. //..
    
85. // for line2
    
86. Sketch::ConstraintGeometry geoline2;
    9 ^  G9 x2 w3 {, e
87. geoline2.Geometry = line2;
    7 G* q. \0 ]# z% Z
88. geoline2.PointType = Sketch::ConstraintPointTypeNone;
    
89. geoline2.SplineDefiningPointIndex = 0;
    ) Z5 j: P9 l' H, u6 k: k
90. theSession->ActiveSketch()->CreateHorizontalConstraint(geoline2);
    
91. //..
    6 k, E) q6 o3 Q% q
92. // for line3
    9 J$ |) Q% n0 ]9 Z) U/ z- W1 ?
93. Sketch::ConstraintGeometry geoline3;
    ' \) x) s& w& D% F4 `
94. geoline3.Geometry = line3;
    * S* F- H6 b0 Z* ], E- v
95. geoline3.PointType = Sketch::ConstraintPointTypeNone;
    % ]; j0 G+ e  K3 s3 r+ j/ G
96. geoline3.SplineDefiningPointIndex = 0;
    6 O8 l3 m7 a: p& @* A, F& k
97. theSession->ActiveSketch()->CreateVerticalConstraint(geoline3);
    # ?8 F' w4 ~4 K* ~* F* l+ u  c9 i
98. // use this method to create the constraints
    
99. /*SketchConstraintBuilder *line3constraint;
    
100. line3constraint= workPart->Sketches()->CreateConstraintBuilder();
     + |: Y) x' @* K  B& k: H
101. line3constraint->GeometryToConstrain()->Add(line3);
     ( o( P* w/ g9 z) R8 N/ L0 N
102. line3constraint->SetConstraintType(SketchConstraintBuilder::ConstraintVertical);
     - |# @' L- b4 @8 z5 |
103. line3constraint->Commit();
     8 k5 x. U7 W& z, r8 J
104.     line3constraint->Destroy();*/
     * ~; U" G# |1 W- A  W- l
105.    
     
106. // add dimension
     
107. //..
     7 [; s/ G5 ~' g' W' @: P, b
108. // for line1
     
109. Sketch::DimensionGeometry dimobject1_start;
     3 k) S* {* E- C$ [) V+ i( o
110. dimobject1_start.AssocType = Sketch::AssocTypeStartPoint;
     
111. dimobject1_start.AssocValue = 0;
     
112. dimobject1_start.Geometry = line1;
     0 c) q2 M- J0 k$ A( ?
113. dimobject1_start.HelpPoint.X = 0 ;
     
114. dimobject1_start.HelpPoint.Y = 0 ;
     0 I% G2 _! r' ~" f2 ]4 p
115. dimobject1_start.HelpPoint.Z = 0 ;
     
116. NXObject *nullNXObject1(NULL);
     6 f* c: V9 |! }- v0 v
117. dimobject1_start.View = nullNXObject1;</p><p> Sketch::DimensionGeometry dimobject1_end;
     
118. dimobject1_end.AssocType = Sketch::AssocTypeEndPoint;
     2 L- }/ L5 }, V' ]. H9 n
119. dimobject1_end.AssocValue = 0;
     ) \0 t5 l: Z" o. |4 ^9 `. o
120. dimobject1_end.Geometry = line1;
     
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;
     . ]* q& m, q- n: z. V" T( V
125.     dimension1 = sketchDimensionalConstraint1->AssociatedDimension();</p><p>
     " k# {1 n# d1 ~+ g8 E8 a4 K: E. _
126. //..
       J1 k/ \9 J7 }* c7 I4 P+ s3 X
127. // for line2
     0 h/ E# [, P8 ?- `" c
128. Sketch::DimensionGeometry dimobject2_start;
     
129. dimobject2_start.AssocType = Sketch::AssocTypeStartPoint;
     # {4 h0 T! X8 k
130. dimobject2_start.AssocValue = 0;
     / a6 w/ g6 s7 `: j; ^, c& {8 g7 s
131. dimobject2_start.Geometry = line2;
     / x% Q/ j7 P8 a! {9 G
132. dimobject2_start.HelpPoint.X = 0 ;
     * ^. D* q& d3 \1 ~" i. G
133. dimobject2_start.HelpPoint.Y = 0 ;
     : V1 ?. E9 {; u! o, [& u8 F% J
134. dimobject2_start.HelpPoint.Z = 0 ;
     
135. dimobject2_start.View = nullNXObject1;</p><p> Sketch::DimensionGeometry dimobject2_end;
     
136. dimobject2_end.AssocType = Sketch::AssocTypeEndPoint;
     ; `. Q2 I. W0 y* F# l0 }8 `3 p* W
137. dimobject2_end.AssocValue = 0;
     3 y3 _5 ?' V; K( S' W' w
138. dimobject2_end.Geometry = line2;
     2 s+ K6 N# D" H7 r0 ?4 z
139. dimobject2_end.HelpPoint.X = 0 ;
     
140. dimobject2_end.HelpPoint.Y = 0 ;
     ! B  ]8 `+ _& L* F4 o+ ~& w
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;
     ( E2 r# z  |" D+ ]  t
145. dimobject3_start.AssocType = Sketch::AssocTypeStartPoint;
     
146. dimobject3_start.AssocValue = 0;
     ; k: `  Q$ `2 X% b% s) a
147. dimobject3_start.Geometry = line3;
     
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;
     
152. dimobject3_end.AssocType = Sketch::AssocTypeEndPoint;
     ! A! l: M- t0 l/ w6 o* h: J3 U
153. dimobject3_end.AssocValue = 0;
     # r' N% q: O2 k" ]% X
154. dimobject3_end.Geometry = line3;
     : h9 @. E% _- A- b" a+ s6 O
155. dimobject3_end.HelpPoint.X = 0 ;
     
156. dimobject3_end.HelpPoint.Y = 0 ;
     
157. dimobject3_end.HelpPoint.Z = 0 ;
     $ }, \1 v6 ]0 A6 n. M
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;
     6 ?4 R$ w; l: T
159.     dimension3 = sketchDimensionalConstraint3->AssociatedDimension();</p><p> //workPart->Expressions()->Delete(height1exp);</p><p> theSession->ActiveSketch()->Update();</p><p> theSession->ActiveSketch()->Deactivate(Sketch::ViewReorientFalse,Sketch::UpdateLevelModel);
     
160. 
     9 `" o& Y0 k) F  p& j
161. /*</p><p> // revolve the body</p><p> */
     9 O5 J  e* |6 F8 y
162. Features::Feature *nullFeatures_Feature(NULL);
     
163. Features::RevolveBuilder *revolveBuilder1;
     
164.     revolveBuilder1 = workPart->Features()->CreateRevolveBuilder(nullFeatures_Feature);
     5 i8 D& D8 V1 j+ x1 `
165.     revolveBuilder1->Limits()->StartExtend()->Value()->SetRightHandSide("0");
     % _4 q* R$ V6 ~$ E/ O& e
166.     revolveBuilder1->Limits()->EndExtend()->Value()->SetRightHandSide("360");
     , r0 G( o0 s$ C
167.     revolveBuilder1->SetTolerance(0.01);
     # w0 [! f9 l5 J9 K+ P% S3 w
168. Section *section1;
     
169.     section1 = workPart->Sections()->CreateSection(0.0095, 0.01, 0.5);
     
170.     revolveBuilder1->SetSection(section1);
     & l' t2 y, i& h- U/ q/ ^- H
171.    
     + k2 E* a* ]- O% f9 g4 v% `% N
172. section1->SetAllowedEntityTypes(Section::AllowTypesOnlyCurves);
     2 V3 k' n8 ?) q
173.    
     6 p1 F1 G+ G; k" M8 S: d; U
174. std::vector<Features::Feature *> features1(1);
     
175.     features1[0] = feature1;
     
176.     CurveFeatureRule *curveFeatureRule1;
     
177.     curveFeatureRule1 = workPart->ScRuleFactory()->CreateRuleCurveFeature(features1);
     
178.    
       x- D7 S$ k+ Q* q
179.     section1->AllowSelfIntersection(false);
     2 ?* S( O7 J0 W: w2 k
180.    
     
181.     std::vector<SelectionIntentRule *> rules1(1);
     
182.     rules1[0] = curveFeatureRule1;
     
183.     NXObject *nullNXObject(NULL);
     
184.     Point3d helpPoint1(0.0, 0.0, 0.0);
     3 o& B. `+ B' E5 L6 W% }  Q0 G
185.     section1->AddToSection(rules1, nullNXObject, nullNXObject, nullNXObject, helpPoint1, Section::ModeCreate, false);
     7 L/ E9 `7 K% f0 ~3 z! G* C3 P
186. 
     3 y. Y( c7 N4 g3 q( p* H3 {9 z
187. // define the axis</p><p>    Direction *direction1;
     5 ?. A. {2 A) U* R9 C+ ~
188.     direction1 = workPart->Directions()->CreateDirection(line2, SenseForward, SmartObject::UpdateOptionWithinModeling);
     ' J& L7 m, E# Y5 m
189.    
     
190.     Point *nullPoint(NULL);
     , T5 Z- l3 I% {# H/ ^/ n
191.     Axis *axis1;
     " W. P% Y6 l0 f/ ~1 k. D
192.     axis1 = workPart->Axes()->CreateAxis(nullPoint, direction1, SmartObject::UpdateOptionWithinModeling);
     
193. 
     
194. revolveBuilder1->SetAxis(axis1);</p><p> // commit feature
     : S4 Y- Z# q) c* p. r& k
195. Features::Feature *feature2;
     * [3 E2 O6 S1 I5 [- V
196.     feature2 = revolveBuilder1->CommitFeature();
     % k( i6 ^5 \7 f, H
197. revolveBuilder1->Destroy();
     
198. }</p><p>}
     ! d8 ?$ O: f- |- {& \6 c! n
199. </p><p> </p>

复制代码