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。
- b! ?9 [, B  ]( ^6 m2 J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。
0 M# x7 Q( e4 w' T& {) \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！
# G& o4 t+ S+ P* B6 G" `1 {* L
效果如下：
, C  O2 z9 U. Z, \

0 H! I9 r5 t  V3 u6 E

admin

比较乱，仅供参考


9 j) s2 W# ~/ w7 M

1. <p>void basicFeatures::createSketch()
   8 P) ?" G$ g' r, w
2. {</p><p>{
   3 U. A; V' p7 P0 n1 d
3.     Session *theSession = Session::GetSession();
   
4.     Part *workPart(theSession->Parts()->Work());
   3 z: D/ P" g% ~! v+ N. ~
5.     Part *displayPart(theSession->Parts()->Display());
   
6.     Sketch *nullSketch(NULL);
   0 ^+ Y+ w; u/ h, K
7.     SketchInPlaceBuilder *sketchInPlaceBuilder1;
   9 B" y$ U  Z  B/ d: w
8.     sketchInPlaceBuilder1 = workPart->Sketches()->CreateNewSketchInPlaceBuilder(nullSketch);
   - ]4 ^% H/ x+ L6 I5 U4 k8 r2 i
9.     sketchInPlaceBuilder1->Plane()->SetMethod(PlaneTypes::MethodTypeFixedZ);
   / s& o3 [& @5 M: C- `
10.     Point3d origin1(0.0, 0.0, 0.0);
    - `6 O' D6 c0 K% g+ r
11.     sketchInPlaceBuilder1->Plane()->SetOrigin(origin1);
    
12.     sketchInPlaceBuilder1->Plane()->Evaluate();</p><p> // set the reference</p><p> theSession->Preferences()->Sketch()->SetCreateInferredConstraints(true);
    
13.    
    1 r' P& y5 Y2 n9 l
14.     theSession->Preferences()->Sketch()->SetContinuousAutoDimensioning(false);
    
15.    
    
16.     theSession->Preferences()->Sketch()->SetDimensionLabel(Preferences::SketchPreferences::DimensionLabelTypeExpression);
    / H% P8 W2 o2 B3 Q) d7 o5 ~5 u
17.    
    
18.     theSession->Preferences()->Sketch()->SetTextSizeFixed(true);
    
19.    
    5 ?4 D3 B  A* R3 E
20.     theSession->Preferences()->Sketch()->SetFixedTextSize(3.0);
    
21.    
    
22.     theSession->Preferences()->Sketch()->SetConstraintSymbolSize(3.0);
    
23.    
    
24.     theSession->Preferences()->Sketch()->SetDisplayObjectColor(false);
    - L; C3 _. \1 {! s
25.    
    
26.     theSession->Preferences()->Sketch()->SetDisplayObjectName(true);</p><p>   
    
27.     NXObject *nXObject1;
    ; e  ]5 i) ?& Y" K( r
28.     nXObject1 = sketchInPlaceBuilder1->Commit();
    1 I+ ^6 B: B$ @% Z6 M! r
29.    
    
30.     Sketch *sketch1(dynamic_cast<Sketch *>(nXObject1));
    # F- k0 T( N. ]2 @$ {. ?
31.     Features::Feature *feature1;
    
32.     feature1 = sketch1->Feature();</p><p>
    : O; w7 T6 o) _& z
33.     sketchInPlaceBuilder1->Destroy();</p><p>
    9 P$ X" d1 I* S
34. sketch1->Activate(Sketch::ViewReorientFalse);
    - e5 l3 [: r' `- ]9 L$ O
35. 
    
36. // define the dimensions
    7 d( R, O! Y& `7 s* J
37.     double heigth1 = this->doubleHeight1->GetProperties()->GetDouble("Value");
    & k4 m+ Z" Z$ K, E* i4 u6 M
38. double heigth2 = this->doubleHeight2->GetProperties()->GetDouble("Value");
    , |6 w1 P" q: r, i  v
39. double length = this->doubleLength->GetProperties()->GetDouble("Value");
    ! Q- L! f0 a) b, G
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);
    7 _; i3 u9 [* }6 h% l$ h
43. sprintf(msg3,"%f",length);
    7 o4 O" R% C: [9 h% j1 V8 b) ~
44. Expression *height1exp,*height2exp,*lengthexp;
    8 |& M" _! F' Z9 P) ~8 e
45. height1exp= workPart->Expressions()->CreateSystemExpression(msg1);
    
46. height2exp= workPart->Expressions()->CreateSystemExpression(msg2);
    5 U' g/ n9 U4 b3 ~2 q+ X7 t
47. lengthexp= workPart->Expressions()->CreateSystemExpression(msg3);
    
48. // these for the dimension position
    5 L. q0 s$ c3 O- i8 s' ^7 T
49. Point3d dimOrigin1(-100, heigth1/2, 0.0);
    - H+ B3 B& s$ ?7 k0 h2 d/ S
50. Point3d dimOrigin2(length/2, heigth1+100, 0.0);
    ! i& N6 m4 h6 C  v7 ^$ K, @
51. Point3d dimOrigin3(length+100, heigth1-heigth2/2, 0.0);</p><p>  // add curves
    5 v4 F' K+ Z0 L* `: S0 p
52.     Point3d startPoint1(0.0, 0.0, 0.0);
    
53. Point3d endPoint1(0.0,heigth1,0.0);
    
54. Point3d endPoint2(length,heigth1,0.0);
    ! c: [6 O/ N: c8 s
55. Point3d endPoint3(length,heigth1-heigth2,0.0);
    
56.     Line *line1,*line2,*line3,*line4;
    
57.     line1 = workPart->Curves()->CreateLine(startPoint1, endPoint1);
    & C! h2 @1 u- Y& G4 {; ^
58. line2 = workPart->Curves()->CreateLine(endPoint1, endPoint2);
    
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);
    : i+ t5 t6 n8 G! P+ R
63. theSession->ActiveSketch()->AddGeometry(line3, Sketch::InferConstraintsOptionInferCoincidentConstraints);
    
64. theSession->ActiveSketch()->AddGeometry(line4, Sketch::InferConstraintsOptionInferCoincidentConstraints);
    
65.    </p><p> // add constraints
    & a* N4 s0 ]. @9 ]5 u
66. //..
    
67. // for line1
    ( I! z8 @: j& f4 l
68. Sketch::ConstraintGeometry geopoint1;
    
69. geopoint1.Geometry = line1;
    0 B9 N; K) f# ]+ k
70. geopoint1.PointType = Sketch::ConstraintPointTypeStartVertex;
    " C1 C( S1 l! c  E
71. geopoint1.SplineDefiningPointIndex = 0;
    
72. // find the (0,0,0) point
    . w) @9 c6 T+ N7 V0 ~2 p( z% u1 K
73. Sketch::ConstraintGeometry geopoint2;
    
74. Point *pointOriginal;
    
75. pointOriginal = workPart->Points()->CreatePoint(sketch1->Origin());
    / o7 m6 z3 o' K4 J, ]! D
76. geopoint2.Geometry = pointOriginal;
    
77. geopoint2.PointType = Sketch::ConstraintPointTypeStartVertex;
    7 g+ {( K8 C# r: u+ a
78. geopoint2.SplineDefiningPointIndex = 0;
    
79. theSession->ActiveSketch()->CreateCoincidentConstraint(geopoint1,geopoint2);</p><p> Sketch::ConstraintGeometry geoline1;
    % i+ j- u/ S& ~* X" f# Z
80. geoline1.Geometry = line1;
    
81. geoline1.PointType = Sketch::ConstraintPointTypeNone;
    5 T& D1 j7 V6 g* Q+ c
82. geoline1.SplineDefiningPointIndex = 0;
    . @! v- X. G& H" Y; h$ A0 T
83. theSession->ActiveSketch()->CreateVerticalConstraint(geoline1);
    8 e7 M$ L7 x& T8 r0 Y9 [8 s
84. //..
    ) c5 \/ R1 N4 l5 R+ ^8 Q1 h8 r: R/ q
85. // for line2
    
86. Sketch::ConstraintGeometry geoline2;
    % I" e6 b. }& Y( Y" _/ B
87. geoline2.Geometry = line2;
    
88. geoline2.PointType = Sketch::ConstraintPointTypeNone;
    
89. geoline2.SplineDefiningPointIndex = 0;
    
90. theSession->ActiveSketch()->CreateHorizontalConstraint(geoline2);
    
91. //..
    6 z+ ]: K! f0 D  Q, J
92. // for line3
    
93. Sketch::ConstraintGeometry geoline3;
    
94. geoline3.Geometry = line3;
    
95. geoline3.PointType = Sketch::ConstraintPointTypeNone;
      W* F9 t2 O3 O1 u+ \
96. geoline3.SplineDefiningPointIndex = 0;
    5 b. `. D6 j7 q( Q
97. theSession->ActiveSketch()->CreateVerticalConstraint(geoline3);
    
98. // use this method to create the constraints
    $ B( l0 k' F& N+ t, v
99. /*SketchConstraintBuilder *line3constraint;
    
100. line3constraint= workPart->Sketches()->CreateConstraintBuilder();
     
101. line3constraint->GeometryToConstrain()->Add(line3);
     : @4 x) d, A% B7 d  A- O! j; `
102. line3constraint->SetConstraintType(SketchConstraintBuilder::ConstraintVertical);
     ! v: Z1 G6 q. W) c$ Z5 C: u, I
103. line3constraint->Commit();
       t0 D9 g; S* u8 S& l
104.     line3constraint->Destroy();*/
     * {; j8 L3 \7 T5 a. E- j# v
105.    
     
106. // add dimension
     1 a1 F6 a2 ?4 K
107. //..
     5 M, {" e- e0 `) e7 m; [
108. // for line1
     $ [8 y" N) F8 _' x
109. Sketch::DimensionGeometry dimobject1_start;
     
110. dimobject1_start.AssocType = Sketch::AssocTypeStartPoint;
     7 }) ?; y, P  w
111. dimobject1_start.AssocValue = 0;
     
112. dimobject1_start.Geometry = line1;
     
113. dimobject1_start.HelpPoint.X = 0 ;
     
114. dimobject1_start.HelpPoint.Y = 0 ;
     
115. dimobject1_start.HelpPoint.Z = 0 ;
     . U& i+ L1 U5 L# c
116. NXObject *nullNXObject1(NULL);
     5 m, Q" ]- I) |1 u; t% A
117. dimobject1_start.View = nullNXObject1;</p><p> Sketch::DimensionGeometry dimobject1_end;
     
118. dimobject1_end.AssocType = Sketch::AssocTypeEndPoint;
     9 P1 J$ `# |0 B) J* B
119. dimobject1_end.AssocValue = 0;
     
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;
     9 t) E( q* g: ?4 [& V1 y7 Z( `
125.     dimension1 = sketchDimensionalConstraint1->AssociatedDimension();</p><p>
       s. i5 M8 }, w  N: d
126. //..
     3 B# {. X& i+ w* X0 Q
127. // for line2
     
128. Sketch::DimensionGeometry dimobject2_start;
     
129. dimobject2_start.AssocType = Sketch::AssocTypeStartPoint;
     , s9 Q; m" p" i! H* |
130. dimobject2_start.AssocValue = 0;
     
131. dimobject2_start.Geometry = line2;
     
132. dimobject2_start.HelpPoint.X = 0 ;
     
133. dimobject2_start.HelpPoint.Y = 0 ;
     ' w: t% `- c7 A" I1 G0 Z
134. dimobject2_start.HelpPoint.Z = 0 ;
     . m; p! g* T) b/ l0 ~1 P
135. dimobject2_start.View = nullNXObject1;</p><p> Sketch::DimensionGeometry dimobject2_end;
     
136. dimobject2_end.AssocType = Sketch::AssocTypeEndPoint;
     + r0 @; H, U  K* k6 F' c
137. dimobject2_end.AssocValue = 0;
     / ^3 R5 l& t( g) ~
138. dimobject2_end.Geometry = line2;
     ) i5 r5 x- t) f
139. dimobject2_end.HelpPoint.X = 0 ;
     , |. \5 |" }6 F& ^
140. dimobject2_end.HelpPoint.Y = 0 ;
     ! z; I2 e6 Z5 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;
     3 Y" V% |1 N) R1 l. m) V) {
143.     dimension2 = sketchDimensionalConstraint2->AssociatedDimension();</p><p> // for line3
     ; H" [/ x$ k8 J  z3 N. o3 e- M  [
144. Sketch::DimensionGeometry dimobject3_start;
     
145. dimobject3_start.AssocType = Sketch::AssocTypeStartPoint;
     
146. dimobject3_start.AssocValue = 0;
     % g5 Y& l3 e% I2 _( l9 N5 k
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;
     8 l9 o8 R9 J) I' c3 a
153. dimobject3_end.AssocValue = 0;
     
154. dimobject3_end.Geometry = line3;
     
155. dimobject3_end.HelpPoint.X = 0 ;
     1 Z, a' D" {) T! [9 P" @$ [
156. dimobject3_end.HelpPoint.Y = 0 ;
     : G8 S9 T+ Y, b
157. dimobject3_end.HelpPoint.Z = 0 ;
     8 c5 _* u7 K/ y7 J5 |/ f
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);
     ) b7 ?0 G; e* t$ O
160. 
     ) J- m8 |3 @" b6 M  d" B8 T
161. /*</p><p> // revolve the body</p><p> */
     
162. Features::Feature *nullFeatures_Feature(NULL);
     
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");
     
167.     revolveBuilder1->SetTolerance(0.01);
     ( s* F0 Z' Q  P) e& Q. F
168. Section *section1;
     
169.     section1 = workPart->Sections()->CreateSection(0.0095, 0.01, 0.5);
     
170.     revolveBuilder1->SetSection(section1);
     ' D) c* q' k" Z3 @% j
171.    
     
172. section1->SetAllowedEntityTypes(Section::AllowTypesOnlyCurves);
     - p% r2 {3 q1 q3 P6 j
173.    
     : W7 t# d. H' j1 x0 \: I( J/ r- g
174. std::vector<Features::Feature *> features1(1);
     8 d: W/ R7 s7 t: R
175.     features1[0] = feature1;
     / f, K2 K) C: O6 g7 n5 n8 f/ e
176.     CurveFeatureRule *curveFeatureRule1;
     ; T+ K7 L$ M0 c) l5 S6 x% o
177.     curveFeatureRule1 = workPart->ScRuleFactory()->CreateRuleCurveFeature(features1);
     , p! p& g; h8 y9 w! T7 x1 }
178.    
     
179.     section1->AllowSelfIntersection(false);
     
180.    
     ! M1 B$ P) y3 q1 N4 k0 K8 z
181.     std::vector<SelectionIntentRule *> rules1(1);
     # v4 Q, q- Q/ T1 o
182.     rules1[0] = curveFeatureRule1;
     8 _+ M* ]8 t! y+ N5 `; v$ v
183.     NXObject *nullNXObject(NULL);
     * x4 y4 l8 K0 Q4 i. U3 j
184.     Point3d helpPoint1(0.0, 0.0, 0.0);
     
185.     section1->AddToSection(rules1, nullNXObject, nullNXObject, nullNXObject, helpPoint1, Section::ModeCreate, false);
     * J" o. r! P) n5 p
186. 
     9 C* b/ Z; D* k# o9 H$ o
187. // define the axis</p><p>    Direction *direction1;
     
188.     direction1 = workPart->Directions()->CreateDirection(line2, SenseForward, SmartObject::UpdateOptionWithinModeling);
     
189.    
     / j8 z& x/ n7 g9 n3 f
190.     Point *nullPoint(NULL);
     
191.     Axis *axis1;
     ( K2 r. K) L1 v6 w. V5 R
192.     axis1 = workPart->Axes()->CreateAxis(nullPoint, direction1, SmartObject::UpdateOptionWithinModeling);
     3 E+ u- C" {, E* p% s
193. 
     $ ^1 h2 }& i$ E  K' z/ l- L$ J
194. revolveBuilder1->SetAxis(axis1);</p><p> // commit feature
     ) ]# x* M9 f* s
195. Features::Feature *feature2;
     
196.     feature2 = revolveBuilder1->CommitFeature();
     0 h: {* A( i6 e
197. revolveBuilder1->Destroy();
     , `. R3 y  r4 Z# f$ b
198. }</p><p>}
     0 ]* o. s5 o1 `9 a
199. </p><p> </p>

复制代码

. O( \* o/ j& e3 A