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()4 o2 C `& _, h( T$ r/ n. T; R
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Session *theSession = Session::GetSession();# P* x4 w; z2 t
Part *workPart(theSession->Parts()->Work());6 Q- e0 s7 Z m) y! _
Part *displayPart(theSession->Parts()->Display());; c8 U+ Y8 k1 v
Sketch *nullSketch(NULL);' D! e% z6 L0 W5 M
SketchInPlaceBuilder *sketchInPlaceBuilder1;
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sketchInPlaceBuilder1 = workPart->Sketches()->CreateNewSketchInPlaceBuilder(nullSketch);
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sketchInPlaceBuilder1->Plane()->SetMethod(PlaneTypes::MethodTypeFixedZ);% h" N0 a3 h' K& m
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);% o3 f& T, o. F7 h' p+ t! z
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theSession->Preferences()->Sketch()->SetContinuousAutoDimensioning(false);% ?2 b3 ]" p1 d( e# V2 [
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theSession->Preferences()->Sketch()->SetDimensionLabel(Preferences::SketchPreferences::DimensionLabelTypeExpression);( n( r/ B" c1 G$ x+ C, x
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theSession->Preferences()->Sketch()->SetTextSizeFixed(true);4 f8 B. F* Z$ z" J1 Q7 S
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theSession->Preferences()->Sketch()->SetFixedTextSize(3.0);) I9 y, q; O8 E7 s
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theSession->Preferences()->Sketch()->SetConstraintSymbolSize(3.0);5 R: U0 i w' X6 I$ h7 m; m
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theSession->Preferences()->Sketch()->SetDisplayObjectColor(false);" h, z2 [2 \9 [& ^, ?! G- D3 S2 x
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theSession->Preferences()->Sketch()->SetDisplayObjectName(true);
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NXObject *nXObject1;9 S' b: N. P' U2 y3 L
nXObject1 = sketchInPlaceBuilder1->Commit();
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Sketch *sketch1(dynamic_cast<Sketch *>(nXObject1));/ ?$ C2 k$ a+ U& I% n
Features::Feature *feature1;
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feature1 = sketch1->Feature();
sketchInPlaceBuilder1->Destroy();: p" w* H5 m m
sketch1->Activate(Sketch::ViewReorientFalse);& {7 o$ p" ]- Q* _/ g* s
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// define the dimensions 6 E* G7 }& o* ]+ v# p
double heigth1 = this->doubleHeight1->GetProperties()->GetDouble("Value");& s) b; i. Z# K! ?7 A# H, U
double heigth2 = this->doubleHeight2->GetProperties()->GetDouble("Value");0 J0 A, e. s! h' U5 }
double length = this->doubleLength->GetProperties()->GetDouble("Value");! |$ Y( \9 d( j- P: h
char msg1[UF_MAX_EXP_BUFSIZE],msg2[UF_MAX_EXP_BUFSIZE],msg3[UF_MAX_EXP_BUFSIZE];; M3 o) S' U$ Z: ]4 A6 v
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);: r5 w( D8 {; ~9 ?+ N" h" \$ l
height2exp= workPart->Expressions()->CreateSystemExpression(msg2);7 Q. l& A2 Z/ Z$ {% b! D
lengthexp= workPart->Expressions()->CreateSystemExpression(msg3);8 G; j. L2 ?- O9 Q4 d w, r
// these for the dimension position& N5 Z( ]; {) F
Point3d dimOrigin1(-100, heigth1/2, 0.0); 8 ]6 s# c9 j" |, V
Point3d dimOrigin2(length/2, heigth1+100, 0.0);3 \; q& I% ^7 I4 q- V8 D( R3 I- X3 I2 S
Point3d dimOrigin3(length+100, heigth1-heigth2/2, 0.0); // add curves2 d2 j: i) u5 \; l$ a, w
Point3d startPoint1(0.0, 0.0, 0.0);
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Point3d endPoint1(0.0,heigth1,0.0);$ x4 w) ^ p0 f
Point3d endPoint2(length,heigth1,0.0);# j0 H! ?+ v4 L$ K6 L) [- `: B7 d
Point3d endPoint3(length,heigth1-heigth2,0.0);" Q! n. @+ L3 B, S9 D
Line *line1,*line2,*line3,*line4;$ L8 @( F# g* q/ g+ a+ S
line1 = workPart->Curves()->CreateLine(startPoint1, endPoint1);0 l3 T; ^, c; q( }
line2 = workPart->Curves()->CreateLine(endPoint1, endPoint2);( j# f4 [( a2 u% u
line3 = workPart->Curves()->CreateLine(endPoint2, endPoint3);$ P! A v2 i$ w! A
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);2 Q7 b; m" a3 }4 N' N0 ~7 T
theSession->ActiveSketch()->AddGeometry(line3, Sketch::InferConstraintsOptionInferCoincidentConstraints);! a0 V$ |; w0 Z2 f8 M' h
theSession->ActiveSketch()->AddGeometry(line4, Sketch::InferConstraintsOptionInferCoincidentConstraints);
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// add constraints
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//..
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// for line1
Sketch::ConstraintGeometry geopoint1;* N8 ~: U/ ^8 o) p$ {3 e8 K% B
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/ r* F' l8 q" O( ~ C
Sketch::ConstraintGeometry geopoint2;
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Point *pointOriginal;
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pointOriginal = workPart->Points()->CreatePoint(sketch1->Origin());
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geopoint2.Geometry = pointOriginal;( j. e+ C7 t" d4 S9 J6 I% [ a
geopoint2.PointType = Sketch::ConstraintPointTypeStartVertex;
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geopoint2.SplineDefiningPointIndex = 0;
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theSession->ActiveSketch()->CreateCoincidentConstraint(geopoint1,geopoint2); Sketch::ConstraintGeometry geoline1;1 [+ r2 B) P: h
geoline1.Geometry = line1;, ?, b! u% p, E5 w" G: F7 a
geoline1.PointType = Sketch::ConstraintPointTypeNone;1 s$ O3 ]4 i% ]' S% Y4 i
geoline1.SplineDefiningPointIndex = 0; F. k9 }$ @# K) s
theSession->ActiveSketch()->CreateVerticalConstraint(geoline1);
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//..
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// for line2# w+ r# Z. Y+ b# x0 Y
Sketch::ConstraintGeometry geoline2;
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geoline2.Geometry = line2;' {. g+ S$ Y! D. G" I9 ^
geoline2.PointType = Sketch::ConstraintPointTypeNone;
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geoline2.SplineDefiningPointIndex = 0;
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theSession->ActiveSketch()->CreateHorizontalConstraint(geoline2);, D8 \5 W* i. M+ h# C4 M8 x
//..
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// for line3
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Sketch::ConstraintGeometry geoline3;
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geoline3.Geometry = line3;$ e+ V4 F; i' e7 ]" W
geoline3.PointType = Sketch::ConstraintPointTypeNone; ]+ [$ i; J5 b* ?: n+ m4 s# t' A4 R
geoline3.SplineDefiningPointIndex = 0;
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theSession->ActiveSketch()->CreateVerticalConstraint(geoline3);% e* V4 L$ q. d6 g) V) E% G8 g
// use this method to create the constraints
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/*SketchConstraintBuilder *line3constraint;
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line3constraint= workPart->Sketches()->CreateConstraintBuilder();/ o% z! D/ D# l+ v' N
line3constraint->GeometryToConstrain()->Add(line3);
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line3constraint->SetConstraintType(SketchConstraintBuilder::ConstraintVertical);
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line3constraint->Commit();$ n$ f$ J, o q! y
line3constraint->Destroy();*/4 D* j. }) I# _$ p; T! N% Y$ A
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// add dimension
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//..
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// for line1
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Sketch::DimensionGeometry dimobject1_start;& g( L# p) {" Y. z4 B. K
dimobject1_start.AssocType = Sketch::AssocTypeStartPoint;
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dimobject1_start.AssocValue = 0;: s; p) R% `/ d6 {+ \. Z6 ]7 e
dimobject1_start.Geometry = line1;! \2 d# @" K- z% ]9 z- I
dimobject1_start.HelpPoint.X = 0 ;/ u" E2 C; S6 Z2 u6 o, i" P
dimobject1_start.HelpPoint.Y = 0 ;3 [; X0 \& [) C/ \2 d5 M% o9 D
dimobject1_start.HelpPoint.Z = 0 ;
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NXObject *nullNXObject1(NULL);" v' ^* b( D" C$ {
dimobject1_start.View = nullNXObject1; Sketch::DimensionGeometry dimobject1_end;
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dimobject1_end.AssocType = Sketch::AssocTypeEndPoint;( ?6 M( V# L' Z4 k
dimobject1_end.AssocValue = 0;
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dimobject1_end.Geometry = line1;! H9 O0 M$ T7 K' U, ^
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;8 q, v/ n$ P, E) m0 P# y
dimension1 = sketchDimensionalConstraint1->AssociatedDimension();9 a& z2 K& D/ b( l
//..
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// for line2
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Sketch::DimensionGeometry dimobject2_start;" T2 r/ H. V4 K, }$ h. w$ T
dimobject2_start.AssocType = Sketch::AssocTypeStartPoint;5 ]% K. F# i7 h2 H; t5 b" V5 F
dimobject2_start.AssocValue = 0;, g- {) F# @+ J. H( B
dimobject2_start.Geometry = line2;# b$ D- }0 N- t9 g8 @5 W
dimobject2_start.HelpPoint.X = 0 ;2 Y8 B4 t; z- b; E7 J
dimobject2_start.HelpPoint.Y = 0 ;1 y6 ?7 n8 D8 k: O$ O+ f
dimobject2_start.HelpPoint.Z = 0 ;
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dimobject2_start.View = nullNXObject1; Sketch::DimensionGeometry dimobject2_end; L$ J1 P) M8 m! \; d8 E4 z; ^( o7 Z: s
dimobject2_end.AssocType = Sketch::AssocTypeEndPoint;
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dimobject2_end.AssocValue = 0;- x& D) K; F4 Z3 ^; w0 i
dimobject2_end.Geometry = line2;
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dimobject2_end.HelpPoint.X = 0 ;
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dimobject2_end.HelpPoint.Y = 0 ;
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dimobject2_end.HelpPoint.Z = 0 ;1 B# |- v/ `0 U3 s
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& x1 O$ U d2 v" y' G0 c1 {
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 ;( |; }& ?" z4 X; l
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;
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dimobject3_end.AssocType = Sketch::AssocTypeEndPoint;4 D M% \+ a/ I I
dimobject3_end.AssocValue = 0;
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dimobject3_end.Geometry = line3;4 f8 A+ \# y7 X: k3 | K' i
dimobject3_end.HelpPoint.X = 0 ;1 l1 n- B5 l0 \& W3 x" V5 Q
dimobject3_end.HelpPoint.Y = 0 ;/ i: s* n5 [# z0 B9 ?
dimobject3_end.HelpPoint.Z = 0 ;+ j. e- a4 f6 h& p
dimobject3_end.View = nullNXObject1; SketchDimensionalConstraint *sketchDimensionalConstraint3 = theSession->ActiveSketch()->CreateDimension(Sketch::ConstraintTypeVerticalDim,dimobject3_start,dimobject3_end,dimOrigin3,height2exp,Sketch::DimensionOptionCreateAsDriving); Annotations::Dimension *dimension3;( O1 e' U. o- Z/ E
dimension3 = sketchDimensionalConstraint3->AssociatedDimension(); //workPart->Expressions()->Delete(height1exp); theSession->ActiveSketch()->Update(); theSession->ActiveSketch()->Deactivate(Sketch::ViewReorientFalse,Sketch::UpdateLevelModel);9 x! U5 ~ G! i0 d4 I# F2 P
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/* // revolve the body */& ~: R8 G+ o* J" s# I+ h0 {0 q n
Features::Feature *nullFeatures_Feature(NULL);
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Features::RevolveBuilder *revolveBuilder1;( x& \' k. \( E+ {' t+ Y! j; D
revolveBuilder1 = workPart->Features()->CreateRevolveBuilder(nullFeatures_Feature);
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revolveBuilder1->Limits()->StartExtend()->Value()->SetRightHandSide("0");8 e+ c+ }$ x ~8 f0 I5 D5 a/ ?, F
revolveBuilder1->Limits()->EndExtend()->Value()->SetRightHandSide("360");9 u7 R# g2 @5 v+ D7 k( R
revolveBuilder1->SetTolerance(0.01);8 Z9 s! v N1 u, z+ x3 N5 M
Section *section1;( \$ Y, ?7 p. `
section1 = workPart->Sections()->CreateSection(0.0095, 0.01, 0.5);9 r6 ^+ t6 h% l" x2 I- J
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;
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CurveFeatureRule *curveFeatureRule1;
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curveFeatureRule1 = workPart->ScRuleFactory()->CreateRuleCurveFeature(features1);
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section1->AllowSelfIntersection(false);
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std::vector<SelectionIntentRule *> rules1(1);+ B5 K | u% {
rules1[0] = curveFeatureRule1;
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NXObject *nullNXObject(NULL);
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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;
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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;4 @6 [/ R) a# A( l' j8 r
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();
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revolveBuilder1->Destroy();' ]! ^. r% P+ R6 B4 Y1 L
}}
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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