NX二次开发源码：创建草图并通过草图做出回转体

admin · 发表于 2014-2-19 17:06:32

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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();
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Part *workPart(theSession->Parts()->Work());( V) N3 ^3 T% H
Part *displayPart(theSession->Parts()->Display());+ v3 _5 ~8 }$ a' o
Sketch *nullSketch(NULL);5 ?# Q3 h* i, e
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);# Z: Q8 \/ ~0 ^6 L
sketchInPlaceBuilder1->Plane()->SetOrigin(origin1);
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sketchInPlaceBuilder1->Plane()->Evaluate(); // set the reference theSession->Preferences()->Sketch()->SetCreateInferredConstraints(true);& E) |+ o& d3 i7 Z# C+ |' |
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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);4 n5 {! ?% n" t- F
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theSession->Preferences()->Sketch()->SetFixedTextSize(3.0);0 [& c7 N+ @7 t& V6 E: f: M$ Z/ [
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theSession->Preferences()->Sketch()->SetConstraintSymbolSize(3.0);
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theSession->Preferences()->Sketch()->SetDisplayObjectColor(false);
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theSession->Preferences()->Sketch()->SetDisplayObjectName(true); % R) M- B, U( I$ g1 a
NXObject *nXObject1;. |8 Y! Z( v& \ `9 h9 Q! Z. |! O. N; b
nXObject1 = sketchInPlaceBuilder1->Commit();
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Sketch *sketch1(dynamic_cast<Sketch *>(nXObject1));
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Features::Feature *feature1;
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feature1 = sketch1->Feature();
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sketchInPlaceBuilder1->Destroy();! N8 Q1 M6 W N; P
sketch1->Activate(Sketch::ViewReorientFalse);$ f' ` n5 ?+ r. \5 N: @& I
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// define the dimensions
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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");
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char msg1[UF_MAX_EXP_BUFSIZE],msg2[UF_MAX_EXP_BUFSIZE],msg3[UF_MAX_EXP_BUFSIZE];
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sprintf(msg1,"%f",heigth1);& Z8 o1 ~% Q* [$ o% |
sprintf(msg2,"%f",heigth2);
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sprintf(msg3,"%f",length);; j2 w( W* h$ A# c# t( o# K
Expression *height1exp,*height2exp,*lengthexp;, z8 C% G6 u: W
height1exp= workPart->Expressions()->CreateSystemExpression(msg1);
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height2exp= workPart->Expressions()->CreateSystemExpression(msg2);' F% @4 w, n0 X4 H! B
lengthexp= workPart->Expressions()->CreateSystemExpression(msg3);
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// these for the dimension position* T4 N. B9 p2 X) n
Point3d dimOrigin1(-100, heigth1/2, 0.0);
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Point3d dimOrigin2(length/2, heigth1+100, 0.0);
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Point3d dimOrigin3(length+100, heigth1-heigth2/2, 0.0); // add curves* \3 }9 ^& d+ q+ `$ ~ J& X
Point3d startPoint1(0.0, 0.0, 0.0);
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Point3d endPoint1(0.0,heigth1,0.0);7 P* A! z# i" g/ o! L1 o8 `* g4 a
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;# e$ J- e( R% x9 q j+ Q
line1 = workPart->Curves()->CreateLine(startPoint1, endPoint1); q% _3 d$ {. g+ D! n9 U: D, D/ D
line2 = workPart->Curves()->CreateLine(endPoint1, endPoint2);+ o3 u, f# {7 M0 {- N
line3 = workPart->Curves()->CreateLine(endPoint2, endPoint3);( W& p' `' k/ S+ C$ r4 r& ]
line4 = workPart->Curves()->CreateLine(endPoint3, startPoint1);: v9 a/ H; r# o d% p. C9 _
theSession->ActiveSketch()->AddGeometry(line1, Sketch::InferConstraintsOptionInferCoincidentConstraints);8 ?9 ?5 M- F* L5 h5 S; Q
theSession->ActiveSketch()->AddGeometry(line2, Sketch::InferConstraintsOptionInferCoincidentConstraints);) H* d0 W* _/ e: W, D6 ], f6 s
theSession->ActiveSketch()->AddGeometry(line3, Sketch::InferConstraintsOptionInferCoincidentConstraints);
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theSession->ActiveSketch()->AddGeometry(line4, Sketch::InferConstraintsOptionInferCoincidentConstraints);
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// add constraints$ k- b. H' y- b* I6 G. S! Y
//..
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// for line1
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Sketch::ConstraintGeometry geopoint1; b7 O u( [# e1 l# o0 L% ~
geopoint1.Geometry = line1;
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geopoint1.PointType = Sketch::ConstraintPointTypeStartVertex;
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geopoint1.SplineDefiningPointIndex = 0;1 q3 ^3 c8 G) s/ ?1 R
// find the (0,0,0) point/ l5 F7 m4 |. Z4 n% W: u
Sketch::ConstraintGeometry geopoint2; 7 d2 f$ a! A, x4 S2 U
Point *pointOriginal;: W, O( l( }8 ^( l' z
pointOriginal = workPart->Points()->CreatePoint(sketch1->Origin());
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geopoint2.Geometry = pointOriginal;) A& X# R# [, G; g3 B
geopoint2.PointType = Sketch::ConstraintPointTypeStartVertex;
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geopoint2.SplineDefiningPointIndex = 0;
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theSession->ActiveSketch()->CreateCoincidentConstraint(geopoint1,geopoint2); Sketch::ConstraintGeometry geoline1;5 o; y( e& w) i& ]2 {
geoline1.Geometry = line1;
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geoline1.PointType = Sketch::ConstraintPointTypeNone;6 ?( @% G% m& `
geoline1.SplineDefiningPointIndex = 0;# F/ ~: I6 O# i: l3 t# R
theSession->ActiveSketch()->CreateVerticalConstraint(geoline1);
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//..
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// for line27 e5 m/ |1 h$ |2 G
Sketch::ConstraintGeometry geoline2;
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geoline2.Geometry = line2;4 O; C4 ?$ Z. z( Q
geoline2.PointType = Sketch::ConstraintPointTypeNone;/ Q8 G# V( ^8 A
geoline2.SplineDefiningPointIndex = 0;# F8 C' |, P/ \" O' `- _0 V7 M
theSession->ActiveSketch()->CreateHorizontalConstraint(geoline2);9 [& o9 `6 D: C
//..
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// for line3) R, l# q/ B: q& R( Q
Sketch::ConstraintGeometry geoline3;; _: p+ Q# t6 A# f/ U- d; ?
geoline3.Geometry = line3;* m5 g3 D# ~# |9 R
geoline3.PointType = Sketch::ConstraintPointTypeNone;
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geoline3.SplineDefiningPointIndex = 0;$ d8 A7 a: E0 D6 Q$ U, P
theSession->ActiveSketch()->CreateVerticalConstraint(geoline3);
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// use this method to create the constraints; s+ I& J( A) o5 z
/*SketchConstraintBuilder *line3constraint;% X s3 _) S* s" f) G. i9 p" E
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();*/
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// add dimension4 A& ^' T$ u* q+ x
//..
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// for line1
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Sketch::DimensionGeometry dimobject1_start;
dimobject1_start.AssocType = Sketch::AssocTypeStartPoint;
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dimobject1_start.AssocValue = 0;- B2 H* ], |# j3 V; X6 V7 v- q- R5 W
dimobject1_start.Geometry = line1;: }: J5 E1 O, W* T, t; |' k# Y
dimobject1_start.HelpPoint.X = 0 ;% a% ]! M: j- h
dimobject1_start.HelpPoint.Y = 0 ;, H. Q, `: X! A3 A% ^ ^
dimobject1_start.HelpPoint.Z = 0 ;
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NXObject *nullNXObject1(NULL);
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dimobject1_start.View = nullNXObject1; Sketch::DimensionGeometry dimobject1_end;
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dimobject1_end.AssocType = Sketch::AssocTypeEndPoint;& n' x, {8 }$ l# s% g9 Y+ |
dimobject1_end.AssocValue = 0;
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dimobject1_end.Geometry = line1;( u: @% ]/ Q; k6 R
dimobject1_end.HelpPoint.X = 0 ;
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dimobject1_end.HelpPoint.Y = 0 ;
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dimobject1_end.HelpPoint.Z = 0 ;
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dimobject1_end.View = nullNXObject1; SketchDimensionalConstraint *sketchDimensionalConstraint1 = theSession->ActiveSketch()->CreateDimension(Sketch::ConstraintTypeVerticalDim,dimobject1_start,dimobject1_end,dimOrigin1,height1exp,Sketch::DimensionOptionCreateAsDriving); Annotations::Dimension *dimension1;+ @. U. Q( j- r( Z, O" x% p4 j
dimension1 = sketchDimensionalConstraint1->AssociatedDimension();: s" K* u& v7 Q! t* R5 ?2 d6 u
//..
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// for line2: v0 {. V+ R+ v( y k7 [
Sketch::DimensionGeometry dimobject2_start;
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dimobject2_start.AssocType = Sketch::AssocTypeStartPoint;7 o9 u; _: Q8 q8 Y# D/ }% @
dimobject2_start.AssocValue = 0;3 J3 P& V4 s: \7 n9 a& b' _& h
dimobject2_start.Geometry = line2;! Y$ }* ?) ^& Z9 w
dimobject2_start.HelpPoint.X = 0 ;
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dimobject2_start.HelpPoint.Y = 0 ;; w* E+ {0 F8 j
dimobject2_start.HelpPoint.Z = 0 ;/ k' Y/ l1 C$ O! b' Y
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;4 N/ h* i$ O8 w8 r o) f1 q2 |, q
dimobject2_end.HelpPoint.X = 0 ;5 ]( l3 l- F1 k- Q
dimobject2_end.HelpPoint.Y = 0 ;
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dimobject2_end.HelpPoint.Z = 0 ;6 Z. S+ A$ g! N: ?7 Y: K
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
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Sketch::DimensionGeometry dimobject3_start;
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dimobject3_start.AssocType = Sketch::AssocTypeStartPoint;7 E8 k3 ]7 T( t" o7 k# l
dimobject3_start.AssocValue = 0;
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dimobject3_start.Geometry = line3;5 i; ]! ~# o& @5 ?' ~5 W r
dimobject3_start.HelpPoint.X = 0 ;' b0 M: w( J+ h6 w9 p. q7 S
dimobject3_start.HelpPoint.Y = 0 ;
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dimobject3_start.HelpPoint.Z = 0 ;' v$ \( s, Y' T, b& B; e7 |
dimobject3_start.View = nullNXObject1; Sketch::DimensionGeometry dimobject3_end;! z& z8 q' X2 k1 F% h3 t
dimobject3_end.AssocType = Sketch::AssocTypeEndPoint;
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dimobject3_end.AssocValue = 0;/ s$ }( }& J' G m6 J: \$ h$ L
dimobject3_end.Geometry = line3;
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dimobject3_end.HelpPoint.X = 0 ;1 f' i, p0 T& s
dimobject3_end.HelpPoint.Y = 0 ;, c2 e. H% ~ D% b& [8 b
dimobject3_end.HelpPoint.Z = 0 ;
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dimobject3_end.View = nullNXObject1; SketchDimensionalConstraint *sketchDimensionalConstraint3 = theSession->ActiveSketch()->CreateDimension(Sketch::ConstraintTypeVerticalDim,dimobject3_start,dimobject3_end,dimOrigin3,height2exp,Sketch::DimensionOptionCreateAsDriving); Annotations::Dimension *dimension3;; |+ ?2 ?6 H. p
dimension3 = sketchDimensionalConstraint3->AssociatedDimension(); //workPart->Expressions()->Delete(height1exp); theSession->ActiveSketch()->Update(); theSession->ActiveSketch()->Deactivate(Sketch::ViewReorientFalse,Sketch::UpdateLevelModel);
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/* // revolve the body */
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Features::Feature *nullFeatures_Feature(NULL);9 \2 }0 I& I4 f
Features::RevolveBuilder *revolveBuilder1;" T$ \1 Q+ ^8 a. u0 @- R8 K
revolveBuilder1 = workPart->Features()->CreateRevolveBuilder(nullFeatures_Feature);
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revolveBuilder1->Limits()->StartExtend()->Value()->SetRightHandSide("0");- j9 x. d- w! ~
revolveBuilder1->Limits()->EndExtend()->Value()->SetRightHandSide("360");
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revolveBuilder1->SetTolerance(0.01);' Y: ~' C4 D+ f3 K- W" d6 @6 i! o
Section *section1;
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section1 = workPart->Sections()->CreateSection(0.0095, 0.01, 0.5);, f) j% `9 B$ d
revolveBuilder1->SetSection(section1);
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section1->SetAllowedEntityTypes(Section::AllowTypesOnlyCurves);1 q x8 e) e$ `/ a' c
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std::vector<Features::Feature *> features1(1);$ o% _8 Y; F9 [7 b8 D4 t
features1[0] = feature1;' Q q, `: D. b
CurveFeatureRule *curveFeatureRule1;& i1 d2 p M8 }% R
curveFeatureRule1 = workPart->ScRuleFactory()->CreateRuleCurveFeature(features1);
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section1->AllowSelfIntersection(false);
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std::vector<SelectionIntentRule *> rules1(1);2 {* |# t; E6 U) C- q) T3 [
rules1[0] = curveFeatureRule1;7 u5 h7 L: _( o$ U& E1 p( {1 q
NXObject *nullNXObject(NULL);
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Point3d helpPoint1(0.0, 0.0, 0.0);- h% s$ k& x0 Z* {* t( ~4 J
section1->AddToSection(rules1, nullNXObject, nullNXObject, nullNXObject, helpPoint1, Section::ModeCreate, false);
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// define the axis Direction *direction1;
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direction1 = workPart->Directions()->CreateDirection(line2, SenseForward, SmartObject::UpdateOptionWithinModeling);; D& I0 L' k3 C/ K3 }
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Point *nullPoint(NULL);
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Axis *axis1;
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axis1 = workPart->Axes()->CreateAxis(nullPoint, direction1, SmartObject::UpdateOptionWithinModeling);1 c' D' i! m6 V$ r
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revolveBuilder1->SetAxis(axis1); // commit feature: U, [* F5 o* b4 q
Features::Feature *feature2;
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feature2 = revolveBuilder1->CommitFeature();5 V+ V# l' H- r' Z
revolveBuilder1->Destroy();+ t3 J) g+ c' 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