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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Session *theSession = Session::GetSession();$ A2 f+ l% i# ]7 V
Part *workPart(theSession->Parts()->Work());
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Part *displayPart(theSession->Parts()->Display());+ t* x: p, I$ r; c' x1 h: w
Sketch *nullSketch(NULL);0 |9 s% J* K' A$ L; k
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);
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sketchInPlaceBuilder1->Plane()->SetOrigin(origin1);
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sketchInPlaceBuilder1->Plane()->Evaluate(); // set the reference theSession->Preferences()->Sketch()->SetCreateInferredConstraints(true);! z$ r6 F8 T& Q$ _- F
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theSession->Preferences()->Sketch()->SetContinuousAutoDimensioning(false);( F& \6 o% R/ }, n" h& F. {/ F
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theSession->Preferences()->Sketch()->SetDimensionLabel(Preferences::SketchPreferences::DimensionLabelTypeExpression);
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theSession->Preferences()->Sketch()->SetTextSizeFixed(true);" r& l) X6 B3 u( Q: s
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theSession->Preferences()->Sketch()->SetFixedTextSize(3.0);# {) U7 ^1 Y! i' d4 O5 T9 z* V
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theSession->Preferences()->Sketch()->SetConstraintSymbolSize(3.0);
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theSession->Preferences()->Sketch()->SetDisplayObjectColor(false);* H% Z' E. T' v& j
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theSession->Preferences()->Sketch()->SetDisplayObjectName(true); 3 q. v" y6 D7 _
NXObject *nXObject1;
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nXObject1 = sketchInPlaceBuilder1->Commit();) V0 I" n' r' @+ `& w$ s+ G
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Sketch *sketch1(dynamic_cast<Sketch *>(nXObject1));
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Features::Feature *feature1;) p, `- }" y3 k7 h
feature1 = sketch1->Feature();4 H$ J0 w: Q5 u. ^& w/ b) p
sketchInPlaceBuilder1->Destroy();
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sketch1->Activate(Sketch::ViewReorientFalse);0 j Y" x+ v! N, p- K# V
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// define the dimensions 5 ?0 S$ p$ g9 Z$ l& Y1 y" g2 C
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");" P5 H- l8 t1 H" P5 r
char msg1[UF_MAX_EXP_BUFSIZE],msg2[UF_MAX_EXP_BUFSIZE],msg3[UF_MAX_EXP_BUFSIZE];
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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;
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height1exp= workPart->Expressions()->CreateSystemExpression(msg1);
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height2exp= workPart->Expressions()->CreateSystemExpression(msg2);
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lengthexp= workPart->Expressions()->CreateSystemExpression(msg3);
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// these for the dimension position
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Point3d dimOrigin1(-100, heigth1/2, 0.0);
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Point3d dimOrigin2(length/2, heigth1+100, 0.0);4 e: c$ E/ {8 O2 Q7 y
Point3d dimOrigin3(length+100, heigth1-heigth2/2, 0.0); // add curves% z2 v4 Y4 P4 h
Point3d startPoint1(0.0, 0.0, 0.0);
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Point3d endPoint1(0.0,heigth1,0.0);
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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;* @/ b5 ` p% d- R f* p" G. _5 J" o5 ]
line1 = workPart->Curves()->CreateLine(startPoint1, endPoint1);
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line2 = workPart->Curves()->CreateLine(endPoint1, endPoint2);& N' k* n- Q3 Q1 Z6 V
line3 = workPart->Curves()->CreateLine(endPoint2, endPoint3);) s% _5 R( {& M8 c: {
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);
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theSession->ActiveSketch()->AddGeometry(line4, Sketch::InferConstraintsOptionInferCoincidentConstraints);
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// add constraints% n1 ^* o6 t+ y$ U* y* s. l
//..
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// for line1+ u# Y% N8 x! Q
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( |" i) L8 W( F$ s. M% ~% C
Sketch::ConstraintGeometry geopoint2; 6 A3 [' c! j/ O/ `5 ~
Point *pointOriginal;. {* v" e9 r* G" t" p8 M
pointOriginal = workPart->Points()->CreatePoint(sketch1->Origin());0 k/ v1 K+ ]5 V8 w7 r* r! _+ b
geopoint2.Geometry = pointOriginal;& D' D" _2 p: T
geopoint2.PointType = Sketch::ConstraintPointTypeStartVertex; |2 Z, y& J/ m6 j8 p# v
geopoint2.SplineDefiningPointIndex = 0;
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theSession->ActiveSketch()->CreateCoincidentConstraint(geopoint1,geopoint2); Sketch::ConstraintGeometry geoline1;
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geoline1.Geometry = line1;
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geoline1.PointType = Sketch::ConstraintPointTypeNone;* Y2 W, E1 n4 k A
geoline1.SplineDefiningPointIndex = 0;4 U6 J+ E8 X0 g5 D4 f9 G
theSession->ActiveSketch()->CreateVerticalConstraint(geoline1);
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//..
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// for line2
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Sketch::ConstraintGeometry geoline2;
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geoline2.Geometry = line2;6 i& n& c! y: G! D" I' @
geoline2.PointType = Sketch::ConstraintPointTypeNone;! t+ O9 Z/ I' a0 O- Z
geoline2.SplineDefiningPointIndex = 0;
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theSession->ActiveSketch()->CreateHorizontalConstraint(geoline2);
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//..! t& x2 X- Q6 L- M
// for line3! z# P9 Q) s( Y. z6 i
Sketch::ConstraintGeometry geoline3;) ]2 w* f! K* Z
geoline3.Geometry = line3;
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geoline3.PointType = Sketch::ConstraintPointTypeNone;
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geoline3.SplineDefiningPointIndex = 0;" {. U9 J) y0 ]9 O% E% o2 y! X
theSession->ActiveSketch()->CreateVerticalConstraint(geoline3);
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// use this method to create the constraints* [" L" x* g, C1 V ~# P6 B
/*SketchConstraintBuilder *line3constraint;
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line3constraint= workPart->Sketches()->CreateConstraintBuilder();
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line3constraint->GeometryToConstrain()->Add(line3);
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line3constraint->SetConstraintType(SketchConstraintBuilder::ConstraintVertical);
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line3constraint->Commit();
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line3constraint->Destroy();*/2 t. R* F! j2 v
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// add dimension" b+ K( [1 w+ z0 N' k
//..1 c& W" m' G; m+ O' j
// for line1
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Sketch::DimensionGeometry dimobject1_start;
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dimobject1_start.AssocType = Sketch::AssocTypeStartPoint;! F/ T# ]) J& j1 F* {
dimobject1_start.AssocValue = 0;# z( O/ D. J/ X/ B9 L% v2 e( ^
dimobject1_start.Geometry = line1;
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dimobject1_start.HelpPoint.X = 0 ;
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dimobject1_start.HelpPoint.Y = 0 ;5 p! l; A4 h3 C' o
dimobject1_start.HelpPoint.Z = 0 ;
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NXObject *nullNXObject1(NULL);
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dimobject1_start.View = nullNXObject1; Sketch::DimensionGeometry dimobject1_end;* _% o! w% V$ Q" q, G' s+ s+ x
dimobject1_end.AssocType = Sketch::AssocTypeEndPoint;/ U+ R/ L* ^2 c+ p! _1 p$ O5 q
dimobject1_end.AssocValue = 0;0 }0 d3 M6 |- f& Y$ c4 A
dimobject1_end.Geometry = line1;
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dimobject1_end.HelpPoint.X = 0 ;2 u/ C* r7 L: c. A
dimobject1_end.HelpPoint.Y = 0 ;7 M' h) C8 s1 q; U9 N8 l( T
dimobject1_end.HelpPoint.Z = 0 ;% X `) k' i" g; G# ^3 ]
dimobject1_end.View = nullNXObject1; SketchDimensionalConstraint *sketchDimensionalConstraint1 = theSession->ActiveSketch()->CreateDimension(Sketch::ConstraintTypeVerticalDim,dimobject1_start,dimobject1_end,dimOrigin1,height1exp,Sketch::DimensionOptionCreateAsDriving); Annotations::Dimension *dimension1;
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dimension1 = sketchDimensionalConstraint1->AssociatedDimension();6 E3 D- m3 w0 M# R( k( W
//..
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// for line2
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Sketch::DimensionGeometry dimobject2_start;
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dimobject2_start.AssocType = Sketch::AssocTypeStartPoint;' V& D) T; Y' K8 o5 \- I$ m
dimobject2_start.AssocValue = 0;
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dimobject2_start.Geometry = line2;9 ^# z! [ l. ^* `9 ?1 Q
dimobject2_start.HelpPoint.X = 0 ;
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dimobject2_start.HelpPoint.Y = 0 ;# d, i1 a: j3 }5 \$ ~: O
dimobject2_start.HelpPoint.Z = 0 ;4 D4 H$ }4 ^3 ~/ w# ^: I8 |1 q
dimobject2_start.View = nullNXObject1; Sketch::DimensionGeometry dimobject2_end;
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dimobject2_end.AssocType = Sketch::AssocTypeEndPoint;
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dimobject2_end.AssocValue = 0;
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dimobject2_end.Geometry = line2;
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dimobject2_end.HelpPoint.X = 0 ;; L1 {$ |' m3 z+ l3 r/ |$ o8 ?6 ^% [
dimobject2_end.HelpPoint.Y = 0 ;
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dimobject2_end.HelpPoint.Z = 0 ;6 e! ~# _" y9 U5 m r4 b! Q( @2 r
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 line34 i1 b' A6 t1 b3 F& q/ c# l
Sketch::DimensionGeometry dimobject3_start;7 z* J: F) V0 l9 d+ u5 j1 ^ C* G7 g8 V
dimobject3_start.AssocType = Sketch::AssocTypeStartPoint;& n0 N! K1 z: i# D* ]: c1 R
dimobject3_start.AssocValue = 0;/ M8 g. Y# h h0 _; L, ^ J
dimobject3_start.Geometry = line3;
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dimobject3_start.HelpPoint.X = 0 ;
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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;8 j# ^- Y5 l* g( `$ _4 [% i
dimobject3_end.AssocType = Sketch::AssocTypeEndPoint;
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dimobject3_end.AssocValue = 0;4 }# z3 u" F4 z( @* S0 D; W
dimobject3_end.Geometry = line3;
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dimobject3_end.HelpPoint.X = 0 ;
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dimobject3_end.HelpPoint.Y = 0 ;
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dimobject3_end.HelpPoint.Z = 0 ;# k! X* t8 N5 r! W' `
dimobject3_end.View = nullNXObject1; SketchDimensionalConstraint *sketchDimensionalConstraint3 = theSession->ActiveSketch()->CreateDimension(Sketch::ConstraintTypeVerticalDim,dimobject3_start,dimobject3_end,dimOrigin3,height2exp,Sketch::DimensionOptionCreateAsDriving); Annotations::Dimension *dimension3;4 M; [2 c% J( M8 Q* ^8 J! H3 n4 g
dimension3 = sketchDimensionalConstraint3->AssociatedDimension(); //workPart->Expressions()->Delete(height1exp); theSession->ActiveSketch()->Update(); theSession->ActiveSketch()->Deactivate(Sketch::ViewReorientFalse,Sketch::UpdateLevelModel);6 ~1 ?& @2 n+ t& a
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/* // revolve the body */
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Features::Feature *nullFeatures_Feature(NULL);
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Features::RevolveBuilder *revolveBuilder1;
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revolveBuilder1 = workPart->Features()->CreateRevolveBuilder(nullFeatures_Feature); I" f2 T2 ]( f& v
revolveBuilder1->Limits()->StartExtend()->Value()->SetRightHandSide("0");
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revolveBuilder1->Limits()->EndExtend()->Value()->SetRightHandSide("360");& j" i8 A1 O( V" n
revolveBuilder1->SetTolerance(0.01);
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Section *section1;
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section1 = workPart->Sections()->CreateSection(0.0095, 0.01, 0.5);
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revolveBuilder1->SetSection(section1);
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section1->SetAllowedEntityTypes(Section::AllowTypesOnlyCurves);
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std::vector<Features::Feature *> features1(1);: f! f _* N- _/ H
features1[0] = feature1;
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CurveFeatureRule *curveFeatureRule1;+ S; l6 l. ^6 C6 z" J
curveFeatureRule1 = workPart->ScRuleFactory()->CreateRuleCurveFeature(features1);
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section1->AllowSelfIntersection(false);5 s* @6 c0 @2 L0 A8 b
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std::vector<SelectionIntentRule *> rules1(1);
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rules1[0] = curveFeatureRule1;
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NXObject *nullNXObject(NULL);$ _! z2 O1 s/ S; X3 q- D
Point3d helpPoint1(0.0, 0.0, 0.0);
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section1->AddToSection(rules1, nullNXObject, nullNXObject, nullNXObject, helpPoint1, Section::ModeCreate, false);
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// define the axis Direction *direction1;; r2 M- I# H$ b) Q4 }: P" q
direction1 = workPart->Directions()->CreateDirection(line2, SenseForward, SmartObject::UpdateOptionWithinModeling);2 R& [/ j- W) g
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Point *nullPoint(NULL);
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Axis *axis1;# S6 q1 `$ z J! G( x! b
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();8 o5 w* Y) l& r4 w) m4 p
revolveBuilder1->Destroy();6 |" C0 g6 k( x7 t) _6 k6 Q
}}
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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