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());- X5 j: Y1 |/ V5 y. ]. e _
Part *displayPart(theSession->Parts()->Display());( x" j# W& z/ i v5 A
Sketch *nullSketch(NULL);5 v6 j! `: R2 C3 w4 E# ]
SketchInPlaceBuilder *sketchInPlaceBuilder1;
sketchInPlaceBuilder1 = workPart->Sketches()->CreateNewSketchInPlaceBuilder(nullSketch);' A# n2 W' D/ H }
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);& @8 c2 N" t' {" L
sketchInPlaceBuilder1->Plane()->Evaluate(); // set the reference theSession->Preferences()->Sketch()->SetCreateInferredConstraints(true);5 t: j* o5 O( B
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theSession->Preferences()->Sketch()->SetContinuousAutoDimensioning(false);0 U( Z/ U9 F; A. w$ [6 Y# p
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theSession->Preferences()->Sketch()->SetDimensionLabel(Preferences::SketchPreferences::DimensionLabelTypeExpression);. d& L) ]. u% A& Y6 R
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theSession->Preferences()->Sketch()->SetTextSizeFixed(true);
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theSession->Preferences()->Sketch()->SetFixedTextSize(3.0);% E3 b0 p6 g1 I4 ]6 G5 n9 y
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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); 9 t) I7 `. u% |+ c- d8 u
NXObject *nXObject1;
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nXObject1 = sketchInPlaceBuilder1->Commit();
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Sketch *sketch1(dynamic_cast<Sketch *>(nXObject1));8 U8 N( Z8 S$ S0 s) o$ n+ i7 b
Features::Feature *feature1;
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feature1 = sketch1->Feature();1 [, Y1 D3 u* z- P
sketchInPlaceBuilder1->Destroy();
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sketch1->Activate(Sketch::ViewReorientFalse);* d" X; O* B% P, z# s6 t! S& r
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// define the dimensions - D* e6 T" E* c9 y3 E5 X1 D+ ~4 B
double heigth1 = this->doubleHeight1->GetProperties()->GetDouble("Value");7 Y4 h( ?/ Y' a& o
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);
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sprintf(msg2,"%f",heigth2);: H# n5 | x- k6 N# l4 o/ c8 s
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);% P- Q$ j# ?# e1 D
lengthexp= workPart->Expressions()->CreateSystemExpression(msg3);) d W% H* M5 v X: M8 c* v
// these for the dimension position! J4 _$ ?' I, a% ~
Point3d dimOrigin1(-100, heigth1/2, 0.0); 7 o- O% Z: G/ k( N8 `+ N* g4 i
Point3d dimOrigin2(length/2, heigth1+100, 0.0);
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Point3d dimOrigin3(length+100, heigth1-heigth2/2, 0.0); // add curves! Y. f! \% ~" L8 A1 z1 o
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);" R% P8 W8 k5 D- I
Point3d endPoint3(length,heigth1-heigth2,0.0);
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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);/ ^0 M0 \- o% X7 B& v, }
line3 = workPart->Curves()->CreateLine(endPoint2, endPoint3);9 t( O5 r% P( T
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);3 y% M5 Z w5 y- O, M9 Q
theSession->ActiveSketch()->AddGeometry(line3, Sketch::InferConstraintsOptionInferCoincidentConstraints);5 A% D/ Z3 a7 s8 ~' b/ O. ^
theSession->ActiveSketch()->AddGeometry(line4, Sketch::InferConstraintsOptionInferCoincidentConstraints);
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// add constraints
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//..
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// for line1" V8 U7 y1 _8 C8 V9 [
Sketch::ConstraintGeometry geopoint1;
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geopoint1.Geometry = line1;" ` r0 n6 t$ j+ s; j% p
geopoint1.PointType = Sketch::ConstraintPointTypeStartVertex;, q$ M. W4 U/ c* v8 H! l
geopoint1.SplineDefiningPointIndex = 0;0 n' @ g$ a0 n% E# m4 Q3 L, d
// find the (0,0,0) point7 L' T1 I' c" J3 {
Sketch::ConstraintGeometry geopoint2;
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Point *pointOriginal;4 ]6 C7 V# Z) t& H( L$ O; @
pointOriginal = workPart->Points()->CreatePoint(sketch1->Origin()); e$ j+ l- A) p. J9 r, N. \+ W
geopoint2.Geometry = pointOriginal;
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geopoint2.PointType = Sketch::ConstraintPointTypeStartVertex;/ ^5 P$ j- Y+ }
geopoint2.SplineDefiningPointIndex = 0;
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theSession->ActiveSketch()->CreateCoincidentConstraint(geopoint1,geopoint2); Sketch::ConstraintGeometry geoline1; X; @3 e+ j% F/ e0 I
geoline1.Geometry = line1;% Z& `9 y2 M& K, }! u" H
geoline1.PointType = Sketch::ConstraintPointTypeNone;/ \: `$ s) F, N! B: j) ~
geoline1.SplineDefiningPointIndex = 0;4 v* J4 i$ o+ Q* H- y0 Z q" G
theSession->ActiveSketch()->CreateVerticalConstraint(geoline1);$ c y& f$ v9 b4 d3 E
//..% V: K; O' F, P# I
// for line29 b' R. A1 F! A- T
Sketch::ConstraintGeometry geoline2;8 t! Y, o; ]) P9 C7 R. N
geoline2.Geometry = line2; p' _/ b) j( [% c
geoline2.PointType = Sketch::ConstraintPointTypeNone;* ~ G) a* H$ ` o
geoline2.SplineDefiningPointIndex = 0;9 X) }- S/ a+ r7 L+ l
theSession->ActiveSketch()->CreateHorizontalConstraint(geoline2);
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//..
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// for line3- M; P; b# R# P7 G& J
Sketch::ConstraintGeometry geoline3;
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geoline3.Geometry = line3;+ t2 @4 t) z/ Q
geoline3.PointType = Sketch::ConstraintPointTypeNone;
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geoline3.SplineDefiningPointIndex = 0;- z4 V- Y+ ~( ?+ v/ a: H0 ?7 b9 L
theSession->ActiveSketch()->CreateVerticalConstraint(geoline3);1 t H) g1 T7 ?0 y2 Q/ u+ {
// use this method to create the constraints P9 C5 Q! Z: m: I5 v
/*SketchConstraintBuilder *line3constraint;
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line3constraint= workPart->Sketches()->CreateConstraintBuilder();7 u8 X1 Y+ ^7 i
line3constraint->GeometryToConstrain()->Add(line3);" J* W, N/ N* R$ \1 o8 f w+ V
line3constraint->SetConstraintType(SketchConstraintBuilder::ConstraintVertical);
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line3constraint->Commit();+ T/ q; M7 ] y$ { x- w7 y9 L
line3constraint->Destroy();*/
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// add dimension
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//..
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// for line13 R1 l# }; ^: P- i$ g) O0 o
Sketch::DimensionGeometry dimobject1_start;
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dimobject1_start.AssocType = Sketch::AssocTypeStartPoint;
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dimobject1_start.AssocValue = 0;: p9 K- C, u; `. C# y
dimobject1_start.Geometry = line1;
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dimobject1_start.HelpPoint.X = 0 ;0 i6 z, b! @9 |. w6 T4 K
dimobject1_start.HelpPoint.Y = 0 ;9 @8 S: N: x k G/ a
dimobject1_start.HelpPoint.Z = 0 ;
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NXObject *nullNXObject1(NULL);( }3 t0 v$ m& G
dimobject1_start.View = nullNXObject1; Sketch::DimensionGeometry dimobject1_end;4 x) Y, `9 c$ e2 I7 ?3 ?7 q
dimobject1_end.AssocType = Sketch::AssocTypeEndPoint;
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dimobject1_end.AssocValue = 0;
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dimobject1_end.Geometry = line1;
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dimobject1_end.HelpPoint.X = 0 ;" ] C' U% @6 H: H5 ]/ m+ W
dimobject1_end.HelpPoint.Y = 0 ;
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dimobject1_end.HelpPoint.Z = 0 ;+ y( u3 A2 o* D/ k! h) a9 | m' D
dimobject1_end.View = nullNXObject1; SketchDimensionalConstraint *sketchDimensionalConstraint1 = theSession->ActiveSketch()->CreateDimension(Sketch::ConstraintTypeVerticalDim,dimobject1_start,dimobject1_end,dimOrigin1,height1exp,Sketch::DimensionOptionCreateAsDriving); Annotations::Dimension *dimension1;7 i) F/ H. T% Z% A0 H6 x
dimension1 = sketchDimensionalConstraint1->AssociatedDimension();( J% W: m# H0 l( d0 L2 s3 O' m
//..
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// for line2/ v# i& ?: G5 M* B3 L6 `
Sketch::DimensionGeometry dimobject2_start;
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dimobject2_start.AssocType = Sketch::AssocTypeStartPoint;' c& m9 s6 E4 I8 h* q9 J
dimobject2_start.AssocValue = 0;
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dimobject2_start.Geometry = line2;
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dimobject2_start.HelpPoint.X = 0 ;; d4 @4 `* f% I/ F/ a6 Y! E
dimobject2_start.HelpPoint.Y = 0 ;8 r) [9 Z4 r0 J
dimobject2_start.HelpPoint.Z = 0 ;
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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;; m: ^& S; }8 P2 s8 Q# J8 }; M
dimobject2_end.HelpPoint.X = 0 ;
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dimobject2_end.HelpPoint.Y = 0 ;3 H# [ q7 b" k+ ?0 O1 X3 ^
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;7 G$ b1 ^/ C/ a2 @( U
dimension2 = sketchDimensionalConstraint2->AssociatedDimension(); // for line3
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Sketch::DimensionGeometry dimobject3_start;) d8 A7 C" A0 {0 g7 S
dimobject3_start.AssocType = Sketch::AssocTypeStartPoint;
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dimobject3_start.AssocValue = 0;3 M8 [# g: z0 d5 ]) |& U
dimobject3_start.Geometry = line3;. K- E5 Y/ U; {# C5 T1 b, I
dimobject3_start.HelpPoint.X = 0 ; P& T P) H0 u1 a: @' g1 B4 T
dimobject3_start.HelpPoint.Y = 0 ;7 j/ Y9 d0 f9 i3 J, _
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;
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dimobject3_end.AssocValue = 0;1 \' h( p" B" J* _' }
dimobject3_end.Geometry = line3;; u0 L$ k6 M5 R, E
dimobject3_end.HelpPoint.X = 0 ;
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dimobject3_end.HelpPoint.Y = 0 ;
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dimobject3_end.HelpPoint.Z = 0 ;0 q0 Y" I4 n! t: I! H
dimobject3_end.View = nullNXObject1; SketchDimensionalConstraint *sketchDimensionalConstraint3 = theSession->ActiveSketch()->CreateDimension(Sketch::ConstraintTypeVerticalDim,dimobject3_start,dimobject3_end,dimOrigin3,height2exp,Sketch::DimensionOptionCreateAsDriving); Annotations::Dimension *dimension3; z" G+ b3 a6 V2 ?' y% Y
dimension3 = sketchDimensionalConstraint3->AssociatedDimension(); //workPart->Expressions()->Delete(height1exp); theSession->ActiveSketch()->Update(); theSession->ActiveSketch()->Deactivate(Sketch::ViewReorientFalse,Sketch::UpdateLevelModel);9 k* K# j6 k f
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/* // revolve the body */
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Features::Feature *nullFeatures_Feature(NULL);
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Features::RevolveBuilder *revolveBuilder1;# e+ m4 a- \9 ]' F7 F4 x% h h
revolveBuilder1 = workPart->Features()->CreateRevolveBuilder(nullFeatures_Feature);4 m" g8 [- a8 p6 b$ h3 E: r) G
revolveBuilder1->Limits()->StartExtend()->Value()->SetRightHandSide("0");" h1 ~9 \* L+ l: |
revolveBuilder1->Limits()->EndExtend()->Value()->SetRightHandSide("360");
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revolveBuilder1->SetTolerance(0.01);
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Section *section1;& D! [: z( o& a: [8 h- i
section1 = workPart->Sections()->CreateSection(0.0095, 0.01, 0.5);" y, D* q7 S/ w$ K
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;! C+ p* c* F: w
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);
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rules1[0] = curveFeatureRule1;* _0 Q- c% O8 ^1 j+ W. [
NXObject *nullNXObject(NULL);) O& Z$ R( o0 }0 K
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;$ `; D. ` T4 y/ C5 z
direction1 = workPart->Directions()->CreateDirection(line2, SenseForward, SmartObject::UpdateOptionWithinModeling);
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Point *nullPoint(NULL);) l, _9 r/ U# G0 I6 V
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;2 {9 K" c" [0 w4 S
feature2 = revolveBuilder1->CommitFeature();+ F" L5 O8 e! }. N5 U' d8 ^ ^, a
revolveBuilder1->Destroy();+ i& V" t6 h& s9 W/ G' p
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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