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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Session *theSession = Session::GetSession();
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Part *workPart(theSession->Parts()->Work());: `' x) M4 m& n
Part *displayPart(theSession->Parts()->Display());; K" Z3 _8 R- ^* q# U
Sketch *nullSketch(NULL);5 D2 L0 R' ?+ l
SketchInPlaceBuilder *sketchInPlaceBuilder1;
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sketchInPlaceBuilder1 = workPart->Sketches()->CreateNewSketchInPlaceBuilder(nullSketch);+ `0 y' ?5 B5 {( A* `
sketchInPlaceBuilder1->Plane()->SetMethod(PlaneTypes::MethodTypeFixedZ);
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Point3d origin1(0.0, 0.0, 0.0);, M v+ d9 C2 e i9 V
sketchInPlaceBuilder1->Plane()->SetOrigin(origin1);
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sketchInPlaceBuilder1->Plane()->Evaluate(); // set the reference theSession->Preferences()->Sketch()->SetCreateInferredConstraints(true);
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theSession->Preferences()->Sketch()->SetContinuousAutoDimensioning(false);' a* R$ h2 l) n/ J4 Z, ?3 \
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theSession->Preferences()->Sketch()->SetDimensionLabel(Preferences::SketchPreferences::DimensionLabelTypeExpression);' r5 Y( u* A" P D8 }( h( g7 D7 W
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theSession->Preferences()->Sketch()->SetTextSizeFixed(true);8 [5 f8 k- r& @$ m$ U
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theSession->Preferences()->Sketch()->SetFixedTextSize(3.0);4 x/ r* i+ g0 U
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theSession->Preferences()->Sketch()->SetConstraintSymbolSize(3.0);' i/ ^3 l. \% x9 ^. J. s- ?, b5 s8 X* x
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theSession->Preferences()->Sketch()->SetDisplayObjectColor(false);
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theSession->Preferences()->Sketch()->SetDisplayObjectName(true);
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NXObject *nXObject1;
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nXObject1 = sketchInPlaceBuilder1->Commit();5 L% U) r' ?7 I- a" K9 ? D% b
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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();: m- f4 I( A9 g. H
sketch1->Activate(Sketch::ViewReorientFalse);
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// define the dimensions
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double heigth1 = this->doubleHeight1->GetProperties()->GetDouble("Value");9 o q! @2 c- M l, O2 a- C9 E
double heigth2 = this->doubleHeight2->GetProperties()->GetDouble("Value");: G7 |: B) j! F6 }* @/ |$ @3 A
double length = this->doubleLength->GetProperties()->GetDouble("Value");. v; o4 B3 v+ [ N- P
char msg1[UF_MAX_EXP_BUFSIZE],msg2[UF_MAX_EXP_BUFSIZE],msg3[UF_MAX_EXP_BUFSIZE];
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sprintf(msg1,"%f",heigth1);0 f8 i( }1 Z r& F
sprintf(msg2,"%f",heigth2);- Q( P# _+ n* g# g" o2 j( {+ |
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);5 N. ]/ T8 w5 c" Z! N
// these for the dimension position
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Point3d dimOrigin1(-100, heigth1/2, 0.0); ( A- Q; n/ y y4 e
Point3d dimOrigin2(length/2, heigth1+100, 0.0);
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Point3d dimOrigin3(length+100, heigth1-heigth2/2, 0.0); // add curves7 e4 P/ E. k1 Q' u3 P
Point3d startPoint1(0.0, 0.0, 0.0);! @+ R5 u1 z9 j& }( J: [0 V
Point3d endPoint1(0.0,heigth1,0.0);8 q/ I! I U+ q3 f. ^
Point3d endPoint2(length,heigth1,0.0);$ M4 m% p8 Z" k$ Y3 N2 j9 R
Point3d endPoint3(length,heigth1-heigth2,0.0);; t, d p; X7 K" ?
Line *line1,*line2,*line3,*line4;2 b+ a8 N, @/ H/ I' O' V
line1 = workPart->Curves()->CreateLine(startPoint1, endPoint1);
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line2 = workPart->Curves()->CreateLine(endPoint1, endPoint2);
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line3 = workPart->Curves()->CreateLine(endPoint2, endPoint3);
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line4 = workPart->Curves()->CreateLine(endPoint3, startPoint1);
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theSession->ActiveSketch()->AddGeometry(line1, Sketch::InferConstraintsOptionInferCoincidentConstraints);3 i" [8 M3 q7 }! {
theSession->ActiveSketch()->AddGeometry(line2, Sketch::InferConstraintsOptionInferCoincidentConstraints);
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theSession->ActiveSketch()->AddGeometry(line3, Sketch::InferConstraintsOptionInferCoincidentConstraints);" D2 Y0 I' y/ i6 Z! w: ]
theSession->ActiveSketch()->AddGeometry(line4, Sketch::InferConstraintsOptionInferCoincidentConstraints);4 n' \; J& A4 V
// add constraints
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//..
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// for line1) i7 J) q5 {: x
Sketch::ConstraintGeometry geopoint1;
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geopoint1.Geometry = line1;
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geopoint1.PointType = Sketch::ConstraintPointTypeStartVertex;" }: h; `! d- T4 {; u% I/ y9 U8 f
geopoint1.SplineDefiningPointIndex = 0;, y" n) @2 B$ g8 V/ [! H
// find the (0,0,0) point
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Sketch::ConstraintGeometry geopoint2;
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Point *pointOriginal;- b) \' v& A& Z: S) m
pointOriginal = workPart->Points()->CreatePoint(sketch1->Origin());8 A2 C' Z: q5 Y' h7 U. e
geopoint2.Geometry = pointOriginal;$ f) j6 p1 ]3 {2 v
geopoint2.PointType = Sketch::ConstraintPointTypeStartVertex;
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geopoint2.SplineDefiningPointIndex = 0;0 u5 z) P0 x0 C: H7 o/ ^& ~( d+ W9 i
theSession->ActiveSketch()->CreateCoincidentConstraint(geopoint1,geopoint2); Sketch::ConstraintGeometry geoline1;
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geoline1.Geometry = line1;
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geoline1.PointType = Sketch::ConstraintPointTypeNone;. B* S; s4 I. M- Z& s( F
geoline1.SplineDefiningPointIndex = 0;
theSession->ActiveSketch()->CreateVerticalConstraint(geoline1);, |: x" _& ^* U
//..
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// for line2
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Sketch::ConstraintGeometry geoline2;
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geoline2.Geometry = line2;2 t3 K l7 q' \ f4 Q- `
geoline2.PointType = Sketch::ConstraintPointTypeNone;, I6 o# @2 X7 `$ t! b6 d' G3 c, E
geoline2.SplineDefiningPointIndex = 0;$ Z- m0 ^. b* Z6 x
theSession->ActiveSketch()->CreateHorizontalConstraint(geoline2);
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//..
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// for line34 d" O- R N1 j9 w
Sketch::ConstraintGeometry geoline3;/ A/ x( N% f" i1 m$ `& Q
geoline3.Geometry = line3;1 z6 x6 b4 E; c: D
geoline3.PointType = Sketch::ConstraintPointTypeNone;! F# Y1 e+ q1 C2 N, R& S
geoline3.SplineDefiningPointIndex = 0;% G: t! ^( ^; N4 k( m
theSession->ActiveSketch()->CreateVerticalConstraint(geoline3);- Y% P5 b. F; f$ a. T0 D8 l6 `
// use this method to create the constraints/ w0 ~8 \- ^. M8 z$ e9 d: |3 k
/*SketchConstraintBuilder *line3constraint;# `0 A/ t4 D" R; y: l" t: f
line3constraint= workPart->Sketches()->CreateConstraintBuilder();+ Q. z+ A* K" ~+ H+ I
line3constraint->GeometryToConstrain()->Add(line3);$ u9 x! b' u# y. Q1 D4 R
line3constraint->SetConstraintType(SketchConstraintBuilder::ConstraintVertical);
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line3constraint->Commit();" f4 L8 H n6 n1 {+ V
line3constraint->Destroy();*/
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// add dimension* J `, [$ S4 L4 ~7 N4 x5 A
//..
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// for line1% C8 S$ Y x8 d" U+ u/ G8 A
Sketch::DimensionGeometry dimobject1_start;% `0 O5 k& Q# q7 y0 \" N9 R
dimobject1_start.AssocType = Sketch::AssocTypeStartPoint;
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dimobject1_start.AssocValue = 0;
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dimobject1_start.Geometry = line1;
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dimobject1_start.HelpPoint.X = 0 ;
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dimobject1_start.HelpPoint.Y = 0 ;3 `- O$ b" t o
dimobject1_start.HelpPoint.Z = 0 ;- O* R- G1 W6 J" |8 t6 G0 b
NXObject *nullNXObject1(NULL);9 ]: h8 s+ l7 T5 [" T
dimobject1_start.View = nullNXObject1; Sketch::DimensionGeometry dimobject1_end;
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dimobject1_end.AssocType = Sketch::AssocTypeEndPoint;6 K' W7 Y$ V2 \8 T) W8 Q7 e+ [
dimobject1_end.AssocValue = 0;' `- R2 p/ B& w
dimobject1_end.Geometry = line1;6 N/ s' B/ Q, Y( p+ m
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;. K$ B N1 `6 b P. ]
dimension1 = sketchDimensionalConstraint1->AssociatedDimension();
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//..
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// for line2
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Sketch::DimensionGeometry dimobject2_start;
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dimobject2_start.AssocType = Sketch::AssocTypeStartPoint;# I$ C# U5 ]( a# R* {
dimobject2_start.AssocValue = 0;
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dimobject2_start.Geometry = line2;
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dimobject2_start.HelpPoint.X = 0 ;
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dimobject2_start.HelpPoint.Y = 0 ;
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dimobject2_start.HelpPoint.Z = 0 ;/ N" n( n' E3 Z, ^! h! e5 ]
dimobject2_start.View = nullNXObject1; Sketch::DimensionGeometry dimobject2_end;4 k- T0 ~$ {1 @
dimobject2_end.AssocType = Sketch::AssocTypeEndPoint;
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dimobject2_end.AssocValue = 0;( e4 r7 V# [, Z/ a% Q
dimobject2_end.Geometry = line2;
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dimobject2_end.HelpPoint.X = 0 ;9 s! t% a+ v2 Q
dimobject2_end.HelpPoint.Y = 0 ;
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dimobject2_end.HelpPoint.Z = 0 ;( T' [ S- _9 M1 C5 v$ 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 line3$ s4 ?& d8 ?3 O' E2 ]
Sketch::DimensionGeometry dimobject3_start;
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dimobject3_start.AssocType = Sketch::AssocTypeStartPoint;# u' B- C i. E
dimobject3_start.AssocValue = 0;: _; Q. }$ G3 m, s: a
dimobject3_start.Geometry = line3;
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dimobject3_start.HelpPoint.X = 0 ;
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dimobject3_start.HelpPoint.Y = 0 ;* i; ]! z" b) C8 `
dimobject3_start.HelpPoint.Z = 0 ;
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dimobject3_start.View = nullNXObject1; Sketch::DimensionGeometry dimobject3_end;# ]' |) C' G+ d# X6 q
dimobject3_end.AssocType = Sketch::AssocTypeEndPoint;
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dimobject3_end.AssocValue = 0;
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dimobject3_end.Geometry = line3;$ l) T8 J3 F/ W8 R0 p5 Z {* G {
dimobject3_end.HelpPoint.X = 0 ;
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dimobject3_end.HelpPoint.Y = 0 ;
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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;
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dimension3 = sketchDimensionalConstraint3->AssociatedDimension(); //workPart->Expressions()->Delete(height1exp); theSession->ActiveSketch()->Update(); theSession->ActiveSketch()->Deactivate(Sketch::ViewReorientFalse,Sketch::UpdateLevelModel);3 q+ Q$ o! J1 j, n4 Y
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/* // revolve the body */
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Features::Feature *nullFeatures_Feature(NULL); o' D) J2 @) x6 L, N2 `3 k
Features::RevolveBuilder *revolveBuilder1;& Z4 G( r! O0 c6 v5 O, P/ q- ^
revolveBuilder1 = workPart->Features()->CreateRevolveBuilder(nullFeatures_Feature);5 q! W+ R1 W U& @3 f# i$ Q
revolveBuilder1->Limits()->StartExtend()->Value()->SetRightHandSide("0");7 ]5 y! L% L9 U' a& \/ \
revolveBuilder1->Limits()->EndExtend()->Value()->SetRightHandSide("360");+ S7 Y; U* `* r+ H- P, K) K
revolveBuilder1->SetTolerance(0.01);
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Section *section1;5 l0 W V- t X! Q" g* e" E
section1 = workPart->Sections()->CreateSection(0.0095, 0.01, 0.5);% f% K' s4 }* i; ?$ C0 x" i
revolveBuilder1->SetSection(section1);
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section1->SetAllowedEntityTypes(Section::AllowTypesOnlyCurves);
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std::vector<Features::Feature *> features1(1);/ v; [/ z3 B, ]5 u9 L
features1[0] = feature1;, A/ j+ m' Z4 S N
CurveFeatureRule *curveFeatureRule1;
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curveFeatureRule1 = workPart->ScRuleFactory()->CreateRuleCurveFeature(features1);* j/ G, d% g0 N
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section1->AllowSelfIntersection(false);
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std::vector<SelectionIntentRule *> rules1(1);2 w$ Z1 o: M3 i
rules1[0] = curveFeatureRule1;, y9 b r1 ^ N9 a9 E( G
NXObject *nullNXObject(NULL);
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Point3d helpPoint1(0.0, 0.0, 0.0);+ v" w. T3 G! f1 X, |5 e0 I d
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);
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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);
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revolveBuilder1->SetAxis(axis1); // commit feature
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Features::Feature *feature2;% G. N7 I1 T/ x: _9 s
feature2 = revolveBuilder1->CommitFeature();
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revolveBuilder1->Destroy(); b# l) a! j1 N9 p" o8 c- e: m
}}
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