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());
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Part *displayPart(theSession->Parts()->Display());
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Sketch *nullSketch(NULL);
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SketchInPlaceBuilder *sketchInPlaceBuilder1;
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sketchInPlaceBuilder1 = workPart->Sketches()->CreateNewSketchInPlaceBuilder(nullSketch);3 `- V& w: F. v# A2 F4 \
sketchInPlaceBuilder1->Plane()->SetMethod(PlaneTypes::MethodTypeFixedZ);
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Point3d origin1(0.0, 0.0, 0.0);. d1 F# d$ v2 l' E8 G
sketchInPlaceBuilder1->Plane()->SetOrigin(origin1);3 R) p: M2 E t0 f% U! e
sketchInPlaceBuilder1->Plane()->Evaluate(); // set the reference theSession->Preferences()->Sketch()->SetCreateInferredConstraints(true);
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theSession->Preferences()->Sketch()->SetContinuousAutoDimensioning(false);) {/ x! L- X5 G- b2 t E
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theSession->Preferences()->Sketch()->SetDimensionLabel(Preferences::SketchPreferences::DimensionLabelTypeExpression);" I2 e' R2 O. h. q
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theSession->Preferences()->Sketch()->SetTextSizeFixed(true);: [$ M6 s1 B G4 B$ u: V% f) U
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theSession->Preferences()->Sketch()->SetFixedTextSize(3.0); I/ G' n; d" s+ q
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theSession->Preferences()->Sketch()->SetConstraintSymbolSize(3.0);
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theSession->Preferences()->Sketch()->SetDisplayObjectColor(false);, A# o$ @6 P% Q# t! e
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theSession->Preferences()->Sketch()->SetDisplayObjectName(true);
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NXObject *nXObject1;
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nXObject1 = sketchInPlaceBuilder1->Commit();2 R: y( U2 t, D2 V. A/ B% L
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Sketch *sketch1(dynamic_cast<Sketch *>(nXObject1));( x% Y" U: G) B T6 Q6 A
Features::Feature *feature1;8 Y3 Q1 s, k0 P7 b* {' d2 Y) y, A9 f
feature1 = sketch1->Feature();$ N% R: d/ B0 _. s* p
sketchInPlaceBuilder1->Destroy();
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sketch1->Activate(Sketch::ViewReorientFalse);
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// define the dimensions
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double heigth1 = this->doubleHeight1->GetProperties()->GetDouble("Value");& c* B# [9 a3 D0 `6 z/ X
double heigth2 = this->doubleHeight2->GetProperties()->GetDouble("Value");7 R7 b& q/ C3 t1 e* e0 B5 m% [
double length = this->doubleLength->GetProperties()->GetDouble("Value");# T6 [( d" |3 R9 b% p$ S
char msg1[UF_MAX_EXP_BUFSIZE],msg2[UF_MAX_EXP_BUFSIZE],msg3[UF_MAX_EXP_BUFSIZE];- V; D4 Z2 @( k- `$ B% l. p
sprintf(msg1,"%f",heigth1);4 Z6 U7 v/ I6 B+ l; {
sprintf(msg2,"%f",heigth2);- x$ v1 u/ }/ j& h
sprintf(msg3,"%f",length);
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Expression *height1exp,*height2exp,*lengthexp;
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height1exp= workPart->Expressions()->CreateSystemExpression(msg1);+ z2 i! m: d9 m( a' F
height2exp= workPart->Expressions()->CreateSystemExpression(msg2);
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lengthexp= workPart->Expressions()->CreateSystemExpression(msg3);* f& v7 G- T9 b/ V
// these for the dimension position
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Point3d dimOrigin1(-100, heigth1/2, 0.0); ) t$ o9 g* ~6 r# C$ U
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);) G3 Q9 `5 _ F" a9 d% A2 K
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);+ @, D; b3 j: T0 p1 n
Line *line1,*line2,*line3,*line4;
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line1 = workPart->Curves()->CreateLine(startPoint1, endPoint1);
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line2 = workPart->Curves()->CreateLine(endPoint1, endPoint2);$ r" d. E7 s1 }6 R0 n$ f9 b3 t9 W
line3 = workPart->Curves()->CreateLine(endPoint2, endPoint3);
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line4 = workPart->Curves()->CreateLine(endPoint3, startPoint1);2 i/ w. n2 q! l6 o% Q. s" y& M
theSession->ActiveSketch()->AddGeometry(line1, Sketch::InferConstraintsOptionInferCoincidentConstraints);
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theSession->ActiveSketch()->AddGeometry(line2, Sketch::InferConstraintsOptionInferCoincidentConstraints); o- ]4 Q9 I1 ~; x$ z7 ]' `
theSession->ActiveSketch()->AddGeometry(line3, Sketch::InferConstraintsOptionInferCoincidentConstraints); R, i+ @; `( h4 Z/ T
theSession->ActiveSketch()->AddGeometry(line4, Sketch::InferConstraintsOptionInferCoincidentConstraints);
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// add constraints# y" A6 i( _/ \7 ]. H. j* |! u0 V5 a
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// for line13 Y. Z5 ~3 X6 D5 P- c2 i" `
Sketch::ConstraintGeometry geopoint1;0 R" E' L8 J# `
geopoint1.Geometry = line1;# t* j% V1 P; R' W. q6 l3 s7 H
geopoint1.PointType = Sketch::ConstraintPointTypeStartVertex;
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geopoint1.SplineDefiningPointIndex = 0;+ V x* s: J9 w% |- i' Z( L( j/ j
// find the (0,0,0) point
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Sketch::ConstraintGeometry geopoint2; ' ~ G) ^/ R8 ]$ m% E. u
Point *pointOriginal;. {2 S) F( u" {
pointOriginal = workPart->Points()->CreatePoint(sketch1->Origin());
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geopoint2.Geometry = pointOriginal;
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geopoint2.PointType = Sketch::ConstraintPointTypeStartVertex;3 l3 L7 r4 n) ~0 [7 `, u& S' U
geopoint2.SplineDefiningPointIndex = 0;
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theSession->ActiveSketch()->CreateCoincidentConstraint(geopoint1,geopoint2); Sketch::ConstraintGeometry geoline1;
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geoline1.Geometry = line1;* t+ ~' p8 Q9 p) N' v! e
geoline1.PointType = Sketch::ConstraintPointTypeNone;
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geoline1.SplineDefiningPointIndex = 0;5 w2 H5 u2 u. @! _ S! x
theSession->ActiveSketch()->CreateVerticalConstraint(geoline1);
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//..
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// for line23 r8 w4 h5 G- t
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);- A# U Q4 d, u) f! |
//..
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// for line3
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Sketch::ConstraintGeometry geoline3;
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geoline3.Geometry = line3;
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geoline3.PointType = Sketch::ConstraintPointTypeNone;+ O% c& L# C5 U
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;' o4 b8 L" i" T% L1 ?4 W$ T+ h
line3constraint= workPart->Sketches()->CreateConstraintBuilder();
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line3constraint->GeometryToConstrain()->Add(line3);% `* f9 r ~ Q6 R+ @$ {
line3constraint->SetConstraintType(SketchConstraintBuilder::ConstraintVertical);! i: `& r, y6 x t
line3constraint->Commit();: k( e* B6 o/ H' T7 u0 |, c
line3constraint->Destroy();*/
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// add dimension
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//..7 }5 j6 z, f5 V" _
// for line1$ U: c( O) A' H
Sketch::DimensionGeometry dimobject1_start;0 B5 m1 W: f' D+ }! ~. x; l
dimobject1_start.AssocType = Sketch::AssocTypeStartPoint;
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dimobject1_start.AssocValue = 0;
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dimobject1_start.Geometry = line1;& t/ v) z; T8 Q+ B: Q; d& }5 z
dimobject1_start.HelpPoint.X = 0 ;
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dimobject1_start.HelpPoint.Y = 0 ;
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dimobject1_start.HelpPoint.Z = 0 ;
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NXObject *nullNXObject1(NULL);; A2 G& f# B) w0 @
dimobject1_start.View = nullNXObject1; Sketch::DimensionGeometry dimobject1_end;% L* A; g/ `2 q R. P, e0 ~2 p0 L
dimobject1_end.AssocType = Sketch::AssocTypeEndPoint; u" M8 r4 o$ p" r! v! `
dimobject1_end.AssocValue = 0;
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dimobject1_end.Geometry = line1;
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dimobject1_end.HelpPoint.X = 0 ;. e$ j4 }; L/ U8 e) d3 V) }" B. V
dimobject1_end.HelpPoint.Y = 0 ;% G6 u7 Z8 q" w5 M. {4 z5 y7 h
dimobject1_end.HelpPoint.Z = 0 ;# c' d9 e8 k% N# I Z
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();9 f, R5 Y% T+ R! H# L. w k
//..; l; J3 `5 X0 m7 T# j& T
// for line2
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Sketch::DimensionGeometry dimobject2_start;' C }6 j* e# o/ T- _1 p
dimobject2_start.AssocType = Sketch::AssocTypeStartPoint;
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dimobject2_start.AssocValue = 0;. a% m$ o/ A$ Q ?+ k5 h( W# \
dimobject2_start.Geometry = line2;
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dimobject2_start.HelpPoint.X = 0 ;" y" n( D2 M: R# _& X n
dimobject2_start.HelpPoint.Y = 0 ;
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dimobject2_start.HelpPoint.Z = 0 ;7 A% F) d, ]6 l
dimobject2_start.View = nullNXObject1; Sketch::DimensionGeometry dimobject2_end;: j8 _0 t9 D, ` Q3 `7 ^
dimobject2_end.AssocType = Sketch::AssocTypeEndPoint;0 W$ P2 E- S3 }% }8 n
dimobject2_end.AssocValue = 0;3 J! l( p1 M4 p) R1 c' x% D
dimobject2_end.Geometry = line2;
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dimobject2_end.HelpPoint.X = 0 ;
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dimobject2_end.HelpPoint.Y = 0 ;* u6 |5 w; f* K$ b& g/ x- Y& n
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/ H: G6 v* v& U0 l: p% h
Sketch::DimensionGeometry dimobject3_start;
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dimobject3_start.AssocType = Sketch::AssocTypeStartPoint;
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dimobject3_start.AssocValue = 0;
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dimobject3_start.Geometry = line3;
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dimobject3_start.HelpPoint.X = 0 ;4 s. M' l$ W& j* \+ J
dimobject3_start.HelpPoint.Y = 0 ;/ n" F8 r D* x
dimobject3_start.HelpPoint.Z = 0 ;
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dimobject3_start.View = nullNXObject1; Sketch::DimensionGeometry dimobject3_end;% G& P4 J* J3 d/ l, ?0 b
dimobject3_end.AssocType = Sketch::AssocTypeEndPoint;0 e* n+ W0 b: ?( ]. W
dimobject3_end.AssocValue = 0;
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dimobject3_end.Geometry = line3;
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dimobject3_end.HelpPoint.X = 0 ;2 `. O2 O# K+ @/ d, T8 d( V6 f& u
dimobject3_end.HelpPoint.Y = 0 ;, K' u) b* q. P1 u- n! d
dimobject3_end.HelpPoint.Z = 0 ;/ ^ Q9 _' i* V$ q- `. K; `9 \
dimobject3_end.View = nullNXObject1; SketchDimensionalConstraint *sketchDimensionalConstraint3 = theSession->ActiveSketch()->CreateDimension(Sketch::ConstraintTypeVerticalDim,dimobject3_start,dimobject3_end,dimOrigin3,height2exp,Sketch::DimensionOptionCreateAsDriving); Annotations::Dimension *dimension3;7 e1 E2 m6 d1 Y! F. R
dimension3 = sketchDimensionalConstraint3->AssociatedDimension(); //workPart->Expressions()->Delete(height1exp); theSession->ActiveSketch()->Update(); theSession->ActiveSketch()->Deactivate(Sketch::ViewReorientFalse,Sketch::UpdateLevelModel);( V& c6 b2 z7 J3 W. i5 B, Y/ O
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/* // revolve the body */. F6 I' {+ m) x
Features::Feature *nullFeatures_Feature(NULL);. t6 v$ O4 D0 N9 b! G+ h& H
Features::RevolveBuilder *revolveBuilder1;& q! b. r- I- h6 E. T3 N
revolveBuilder1 = workPart->Features()->CreateRevolveBuilder(nullFeatures_Feature);
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revolveBuilder1->Limits()->StartExtend()->Value()->SetRightHandSide("0");
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revolveBuilder1->Limits()->EndExtend()->Value()->SetRightHandSide("360");
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revolveBuilder1->SetTolerance(0.01);
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Section *section1;
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section1 = workPart->Sections()->CreateSection(0.0095, 0.01, 0.5);, N; s3 N4 }$ a2 }0 s
revolveBuilder1->SetSection(section1);
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section1->SetAllowedEntityTypes(Section::AllowTypesOnlyCurves);
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std::vector<Features::Feature *> features1(1);
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features1[0] = feature1;3 F0 H4 b% h8 v+ }% U
CurveFeatureRule *curveFeatureRule1;9 T1 E$ e4 m, f' q! s2 ? w3 |
curveFeatureRule1 = workPart->ScRuleFactory()->CreateRuleCurveFeature(features1);
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section1->AllowSelfIntersection(false);& I+ e$ K& p7 n& b" Z
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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);. P* w/ h6 C! R: z9 O# C
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;% R: h( ~/ m9 C" ?& }. V
feature2 = revolveBuilder1->CommitFeature();" k Z: E- p* G% g/ }- `
revolveBuilder1->Destroy();
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