NX二次开发源码：创建草图并通过草图做出回转体

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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！

效果如下：

admin · 发表于 2014-2-19 17:07:47

比较乱，仅供参考

void basicFeatures::createSketch()
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{{
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Session *theSession = Session::GetSession();# z2 Y% t; n0 E1 `) n+ Y
Part *workPart(theSession->Parts()->Work());
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Part *displayPart(theSession->Parts()->Display()); A( M) H5 M" g, n' A: B
Sketch *nullSketch(NULL);
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SketchInPlaceBuilder *sketchInPlaceBuilder1;
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sketchInPlaceBuilder1 = workPart->Sketches()->CreateNewSketchInPlaceBuilder(nullSketch);
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sketchInPlaceBuilder1->Plane()->SetMethod(PlaneTypes::MethodTypeFixedZ);
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Point3d origin1(0.0, 0.0, 0.0);$ e- y" W8 `2 n9 l' y3 p) Q
sketchInPlaceBuilder1->Plane()->SetOrigin(origin1);4 Z5 }5 C) [( r, o
sketchInPlaceBuilder1->Plane()->Evaluate(); // set the reference theSession->Preferences()->Sketch()->SetCreateInferredConstraints(true);, Y$ s: S( w5 M6 ?8 M7 T4 x3 P
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theSession->Preferences()->Sketch()->SetContinuousAutoDimensioning(false);
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theSession->Preferences()->Sketch()->SetDimensionLabel(Preferences::SketchPreferences::DimensionLabelTypeExpression);
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theSession->Preferences()->Sketch()->SetTextSizeFixed(true);5 S, A5 [8 }' n, B m1 a1 o
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theSession->Preferences()->Sketch()->SetFixedTextSize(3.0);$ A( e* j4 i- Q2 G
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theSession->Preferences()->Sketch()->SetConstraintSymbolSize(3.0);
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theSession->Preferences()->Sketch()->SetDisplayObjectColor(false);1 t) `- |$ C1 @5 d+ t
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theSession->Preferences()->Sketch()->SetDisplayObjectName(true);
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NXObject *nXObject1;: `' B" }4 J+ K# {/ V1 d
nXObject1 = sketchInPlaceBuilder1->Commit();
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Sketch *sketch1(dynamic_cast<Sketch *>(nXObject1));. }6 X n/ c3 S' c8 K& b
Features::Feature *feature1;+ Q7 T$ O5 z# E7 P$ n. R E5 s
feature1 = sketch1->Feature();2 o6 o% }; F5 Q
sketchInPlaceBuilder1->Destroy();
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sketch1->Activate(Sketch::ViewReorientFalse);
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// define the dimensions % X; W" p5 z/ {
double heigth1 = this->doubleHeight1->GetProperties()->GetDouble("Value");
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double heigth2 = this->doubleHeight2->GetProperties()->GetDouble("Value");
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double length = this->doubleLength->GetProperties()->GetDouble("Value");0 S/ @- a, I3 B% K8 _, N o X/ F
char msg1[UF_MAX_EXP_BUFSIZE],msg2[UF_MAX_EXP_BUFSIZE],msg3[UF_MAX_EXP_BUFSIZE];7 e8 }. |! E9 S
sprintf(msg1,"%f",heigth1);
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sprintf(msg2,"%f",heigth2);
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sprintf(msg3,"%f",length);
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Expression *height1exp,*height2exp,*lengthexp;8 g0 a: w3 i8 ]* e) X' Y+ f; d
height1exp= workPart->Expressions()->CreateSystemExpression(msg1);
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height2exp= workPart->Expressions()->CreateSystemExpression(msg2);+ \6 J. I$ \ X+ h1 q% x) m
lengthexp= workPart->Expressions()->CreateSystemExpression(msg3);4 |; y( M0 R9 y% A: G' S
// these for the dimension position0 P1 N4 R# @# Y& i7 X9 X
Point3d dimOrigin1(-100, heigth1/2, 0.0); 7 {. C+ W9 x+ I* M. s
Point3d dimOrigin2(length/2, heigth1+100, 0.0);
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Point3d dimOrigin3(length+100, heigth1-heigth2/2, 0.0); // add curves
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Point3d startPoint1(0.0, 0.0, 0.0);/ p& P* Y M' g/ {) T# K
Point3d endPoint1(0.0,heigth1,0.0);! Y) X7 s# S6 ?# Q
Point3d endPoint2(length,heigth1,0.0);
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Point3d endPoint3(length,heigth1-heigth2,0.0);
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Line *line1,*line2,*line3,*line4;/ c$ Y& ~3 L* \4 @0 w
line1 = workPart->Curves()->CreateLine(startPoint1, endPoint1);3 X2 {- W8 A8 _; S% L/ g
line2 = workPart->Curves()->CreateLine(endPoint1, endPoint2);
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line3 = workPart->Curves()->CreateLine(endPoint2, endPoint3);1 e) J6 `7 @" \: F. v0 y8 v2 d4 S
line4 = workPart->Curves()->CreateLine(endPoint3, startPoint1);
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theSession->ActiveSketch()->AddGeometry(line1, Sketch::InferConstraintsOptionInferCoincidentConstraints);
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theSession->ActiveSketch()->AddGeometry(line2, Sketch::InferConstraintsOptionInferCoincidentConstraints);
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theSession->ActiveSketch()->AddGeometry(line3, Sketch::InferConstraintsOptionInferCoincidentConstraints);3 ?- q/ d* M }, R4 ]* J6 g! G
theSession->ActiveSketch()->AddGeometry(line4, Sketch::InferConstraintsOptionInferCoincidentConstraints);
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// add constraints; L* r5 Y! W# h. g) y0 b
//..& D$ j; m; |4 ^) u" p# h- ~ `+ v
// for line1
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Sketch::ConstraintGeometry geopoint1;
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geopoint1.Geometry = line1;
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geopoint1.PointType = Sketch::ConstraintPointTypeStartVertex;
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geopoint1.SplineDefiningPointIndex = 0;
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// find the (0,0,0) point
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Sketch::ConstraintGeometry geopoint2;
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Point *pointOriginal;- \& R( N; I& u
pointOriginal = workPart->Points()->CreatePoint(sketch1->Origin());, B5 | b4 k2 l) s3 G; j5 L
geopoint2.Geometry = pointOriginal;
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geopoint2.PointType = Sketch::ConstraintPointTypeStartVertex;
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geopoint2.SplineDefiningPointIndex = 0;
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theSession->ActiveSketch()->CreateCoincidentConstraint(geopoint1,geopoint2); Sketch::ConstraintGeometry geoline1;8 ~6 R3 V1 Z0 [8 z, \2 X
geoline1.Geometry = line1;
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geoline1.PointType = Sketch::ConstraintPointTypeNone;' `7 o% W) i0 H( \; C+ [0 h
geoline1.SplineDefiningPointIndex = 0;5 Y9 ]) Y( z( r' I, B8 K& j
theSession->ActiveSketch()->CreateVerticalConstraint(geoline1);
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//..6 u9 q a& r* b0 l+ {
// for line2: h; O3 m& e: B8 t4 d6 A1 C* U
Sketch::ConstraintGeometry geoline2;
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geoline2.Geometry = line2;
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geoline2.PointType = Sketch::ConstraintPointTypeNone;
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geoline2.SplineDefiningPointIndex = 0;
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theSession->ActiveSketch()->CreateHorizontalConstraint(geoline2);* W. }5 @$ }; Z/ V3 ^- ?
//..
// for line3. ]' z( S8 s' Y: D
Sketch::ConstraintGeometry geoline3;5 z6 Z7 ^. [7 I4 B U0 s; E
geoline3.Geometry = line3;/ q; x& a. m5 Z
geoline3.PointType = Sketch::ConstraintPointTypeNone;( t! T' p: F$ @3 y3 T
geoline3.SplineDefiningPointIndex = 0;
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theSession->ActiveSketch()->CreateVerticalConstraint(geoline3);
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// use this method to create the constraints
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/*SketchConstraintBuilder *line3constraint;! H) W' X3 B Y4 V( ?% f0 p
line3constraint= workPart->Sketches()->CreateConstraintBuilder();
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line3constraint->GeometryToConstrain()->Add(line3);
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line3constraint->SetConstraintType(SketchConstraintBuilder::ConstraintVertical);' [1 ~' c5 ]! N$ j4 d
line3constraint->Commit();6 P" B# s) N$ j/ s( r
line3constraint->Destroy();*/
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// add dimension
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//..! {5 L8 ?' M" [" U" [
// for line1
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Sketch::DimensionGeometry dimobject1_start;2 M; V* ?) R, i/ l; v
dimobject1_start.AssocType = Sketch::AssocTypeStartPoint;2 P1 m3 A1 h- [- k$ d4 k8 B
dimobject1_start.AssocValue = 0;& M0 I' S4 b3 n# b# \& j. Z
dimobject1_start.Geometry = line1;
dimobject1_start.HelpPoint.X = 0 ;, t5 h$ L6 L) r& t. s, i1 u
dimobject1_start.HelpPoint.Y = 0 ;
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dimobject1_start.HelpPoint.Z = 0 ;, U- E& w+ U S2 g7 J: s
NXObject *nullNXObject1(NULL);3 s, \9 E: M+ e5 ^0 J6 O
dimobject1_start.View = nullNXObject1; Sketch::DimensionGeometry dimobject1_end;2 c6 C5 u& m: ~7 l- Q- D
dimobject1_end.AssocType = Sketch::AssocTypeEndPoint;
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dimobject1_end.AssocValue = 0;8 }6 a' H' b& R3 K, S3 k0 e
dimobject1_end.Geometry = line1;
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dimobject1_end.HelpPoint.X = 0 ;- n* p6 [8 M2 c. S) U
dimobject1_end.HelpPoint.Y = 0 ;, n; G7 I0 i8 ^
dimobject1_end.HelpPoint.Z = 0 ;/ y o* A3 u' {- j3 t. t" T6 h
dimobject1_end.View = nullNXObject1; SketchDimensionalConstraint *sketchDimensionalConstraint1 = theSession->ActiveSketch()->CreateDimension(Sketch::ConstraintTypeVerticalDim,dimobject1_start,dimobject1_end,dimOrigin1,height1exp,Sketch::DimensionOptionCreateAsDriving); Annotations::Dimension *dimension1;3 Y" ?6 Q. V4 A+ K: m9 F
dimension1 = sketchDimensionalConstraint1->AssociatedDimension();
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//..1 X5 F. d( n. X- y
// for line2
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Sketch::DimensionGeometry dimobject2_start;1 W; q2 ], I* K! J( v* ~
dimobject2_start.AssocType = Sketch::AssocTypeStartPoint;% L ]! J) Q K) p1 C
dimobject2_start.AssocValue = 0;
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dimobject2_start.Geometry = line2;: ?% y% a5 A$ K5 @5 O8 |6 T. S4 z( U
dimobject2_start.HelpPoint.X = 0 ;
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dimobject2_start.HelpPoint.Y = 0 ;
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dimobject2_start.HelpPoint.Z = 0 ;
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dimobject2_start.View = nullNXObject1; Sketch::DimensionGeometry dimobject2_end;) @, h# ` y$ C+ q, x
dimobject2_end.AssocType = Sketch::AssocTypeEndPoint;% l9 ~' S0 s J( q
dimobject2_end.AssocValue = 0;
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dimobject2_end.Geometry = line2;
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dimobject2_end.HelpPoint.X = 0 ;6 S8 f4 w5 R" f* B0 J
dimobject2_end.HelpPoint.Y = 0 ;
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dimobject2_end.HelpPoint.Z = 0 ;
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dimobject2_end.View = nullNXObject1; SketchDimensionalConstraint *sketchDimensionalConstraint2 = theSession->ActiveSketch()->CreateDimension(Sketch::ConstraintTypeHorizontalDim,dimobject2_start,dimobject2_end,dimOrigin2,lengthexp,Sketch::DimensionOptionCreateAsDriving); Annotations::Dimension *dimension2;
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dimension2 = sketchDimensionalConstraint2->AssociatedDimension(); // for line3 R- U. i! j- N3 ]8 E7 Q7 M1 i
Sketch::DimensionGeometry dimobject3_start;
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dimobject3_start.AssocType = Sketch::AssocTypeStartPoint;3 E3 u- c" h" F. c
dimobject3_start.AssocValue = 0;& |; t8 U& ]1 Z) i. k' R
dimobject3_start.Geometry = line3;
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dimobject3_start.HelpPoint.X = 0 ;; v8 w4 X7 c5 P: L4 B% d
dimobject3_start.HelpPoint.Y = 0 ;
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dimobject3_start.HelpPoint.Z = 0 ;
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dimobject3_start.View = nullNXObject1; Sketch::DimensionGeometry dimobject3_end;, v3 T; G+ o# ]9 }$ P* w/ X' y) C
dimobject3_end.AssocType = Sketch::AssocTypeEndPoint;# j% Z+ a. }: o) h! R2 _* m: S
dimobject3_end.AssocValue = 0;
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dimobject3_end.Geometry = line3;7 n. |8 A1 n3 g+ g( N, a
dimobject3_end.HelpPoint.X = 0 ;
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dimobject3_end.HelpPoint.Y = 0 ;
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dimobject3_end.HelpPoint.Z = 0 ;+ h! l N1 s$ Y" Y: o. V8 ~
dimobject3_end.View = nullNXObject1; SketchDimensionalConstraint *sketchDimensionalConstraint3 = theSession->ActiveSketch()->CreateDimension(Sketch::ConstraintTypeVerticalDim,dimobject3_start,dimobject3_end,dimOrigin3,height2exp,Sketch::DimensionOptionCreateAsDriving); Annotations::Dimension *dimension3;
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dimension3 = sketchDimensionalConstraint3->AssociatedDimension(); //workPart->Expressions()->Delete(height1exp); theSession->ActiveSketch()->Update(); theSession->ActiveSketch()->Deactivate(Sketch::ViewReorientFalse,Sketch::UpdateLevelModel);
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/* // revolve the body */- w' h# b- l0 x1 O4 t9 T! n
Features::Feature *nullFeatures_Feature(NULL);
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Features::RevolveBuilder *revolveBuilder1;
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revolveBuilder1 = workPart->Features()->CreateRevolveBuilder(nullFeatures_Feature);! U1 C: T% I2 D
revolveBuilder1->Limits()->StartExtend()->Value()->SetRightHandSide("0");& V- [5 p- t* `4 H& d% }- s
revolveBuilder1->Limits()->EndExtend()->Value()->SetRightHandSide("360");
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revolveBuilder1->SetTolerance(0.01); J. T l- Z* q6 O
Section *section1;
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section1 = workPart->Sections()->CreateSection(0.0095, 0.01, 0.5);
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revolveBuilder1->SetSection(section1);/ J4 r! m0 u f! D' b) O: D c
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section1->SetAllowedEntityTypes(Section::AllowTypesOnlyCurves);* ^8 E& U/ l+ C9 @8 r
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std::vector<Features::Feature *> features1(1);4 o1 M& w* ^! f" g
features1[0] = feature1;( L5 G( Y/ ~5 H# z- G
CurveFeatureRule *curveFeatureRule1;$ _( H! }! g; u* w6 C" f
curveFeatureRule1 = workPart->ScRuleFactory()->CreateRuleCurveFeature(features1);
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section1->AllowSelfIntersection(false);8 o9 R1 D8 _7 \* N1 `/ w
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std::vector<SelectionIntentRule *> rules1(1);
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rules1[0] = curveFeatureRule1;
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NXObject *nullNXObject(NULL);
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Point3d helpPoint1(0.0, 0.0, 0.0);+ h t( R, W# Q d( d4 G
section1->AddToSection(rules1, nullNXObject, nullNXObject, nullNXObject, helpPoint1, Section::ModeCreate, false);2 Q2 U$ ^9 t% b$ K: K" q2 y
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// define the axis Direction *direction1;
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direction1 = workPart->Directions()->CreateDirection(line2, SenseForward, SmartObject::UpdateOptionWithinModeling);
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Point *nullPoint(NULL);
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Axis *axis1;8 ~9 n! D$ p7 b) x. @. t2 M' m& |
axis1 = workPart->Axes()->CreateAxis(nullPoint, direction1, SmartObject::UpdateOptionWithinModeling);
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revolveBuilder1->SetAxis(axis1); // commit feature
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Features::Feature *feature2;
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feature2 = revolveBuilder1->CommitFeature();0 o2 l) b, k" Z6 l ?- X3 ?$ _9 G
revolveBuilder1->Destroy();3 I6 m) Z K! n7 j& p' a
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[二次开发源码] NX二次开发源码：创建草图并通过草图做出回转体