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()+ Z9 t. i, Z* B2 J
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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());! \# j% N% }4 C- Q! d( T% m
Sketch *nullSketch(NULL);( i! W2 g1 K ~: o: A
SketchInPlaceBuilder *sketchInPlaceBuilder1;5 ]1 i0 Z+ B, x6 Q5 z9 I
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);( ~. |% v" R2 e- x, B1 ]9 {
sketchInPlaceBuilder1->Plane()->SetOrigin(origin1);+ H [# P: g+ u0 u7 l9 |4 L, u
sketchInPlaceBuilder1->Plane()->Evaluate(); // set the reference theSession->Preferences()->Sketch()->SetCreateInferredConstraints(true);# _' ~' I5 w# o: s0 B9 j( @1 Z
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theSession->Preferences()->Sketch()->SetContinuousAutoDimensioning(false);. B% `1 F! b- ^& u8 P
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theSession->Preferences()->Sketch()->SetDimensionLabel(Preferences::SketchPreferences::DimensionLabelTypeExpression);
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theSession->Preferences()->Sketch()->SetTextSizeFixed(true);
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theSession->Preferences()->Sketch()->SetFixedTextSize(3.0);- r' i, x8 V$ k4 ?+ t' H
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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);
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NXObject *nXObject1;( p. U( e$ t, `/ C
nXObject1 = sketchInPlaceBuilder1->Commit();
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Sketch *sketch1(dynamic_cast<Sketch *>(nXObject1));: s# q1 E2 o7 G; |, u
Features::Feature *feature1;9 j; e$ Z/ `4 E( i; `! v j8 c
feature1 = sketch1->Feature();; V- C' _5 j" l% j$ s2 i: s) y4 B
sketchInPlaceBuilder1->Destroy();
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sketch1->Activate(Sketch::ViewReorientFalse);3 X+ i& T0 h( c2 r) L+ Z) e/ y
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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");( S6 V# G) X7 M# D, l9 R5 I
double length = this->doubleLength->GetProperties()->GetDouble("Value");# ?* z3 ~( J! o; }
char msg1[UF_MAX_EXP_BUFSIZE],msg2[UF_MAX_EXP_BUFSIZE],msg3[UF_MAX_EXP_BUFSIZE];, e/ p6 H) V+ J- \+ y7 O. q: Y6 \
sprintf(msg1,"%f",heigth1);& J3 q$ k5 l# ?1 J# |
sprintf(msg2,"%f",heigth2);/ C8 F) t( g( C% Y+ a9 v
sprintf(msg3,"%f",length);
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Expression *height1exp,*height2exp,*lengthexp;8 y9 N& U1 c: A1 F
height1exp= workPart->Expressions()->CreateSystemExpression(msg1);
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height2exp= workPart->Expressions()->CreateSystemExpression(msg2);
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lengthexp= workPart->Expressions()->CreateSystemExpression(msg3);1 r1 i5 m% l5 [
// these for the dimension position
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Point3d dimOrigin1(-100, heigth1/2, 0.0);
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Point3d dimOrigin2(length/2, heigth1+100, 0.0);( y) s& }3 K$ g$ H$ r" G+ B7 S$ J
Point3d dimOrigin3(length+100, heigth1-heigth2/2, 0.0); // add curves
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Point3d startPoint1(0.0, 0.0, 0.0);
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Point3d endPoint1(0.0,heigth1,0.0);. j; w5 P+ Y9 g4 @# s
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;
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line1 = workPart->Curves()->CreateLine(startPoint1, endPoint1);0 r# M: ~0 w% f# ^0 B, V
line2 = workPart->Curves()->CreateLine(endPoint1, endPoint2);7 `* K) l( e0 V% e* h
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);: [6 q) t# ` V; ] q
theSession->ActiveSketch()->AddGeometry(line2, Sketch::InferConstraintsOptionInferCoincidentConstraints);
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theSession->ActiveSketch()->AddGeometry(line3, Sketch::InferConstraintsOptionInferCoincidentConstraints);
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theSession->ActiveSketch()->AddGeometry(line4, Sketch::InferConstraintsOptionInferCoincidentConstraints);6 ~8 `- l/ Q; n K: |- m/ w
// add constraints
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//..; b( Q5 R, ^" p* c2 i7 ~. i6 [7 |
// for line1; s& K$ m9 K0 N
Sketch::ConstraintGeometry geopoint1;4 {5 |& |) r' y- I" B3 q4 u9 S
geopoint1.Geometry = line1; Z& w+ A9 T! h9 d: }
geopoint1.PointType = Sketch::ConstraintPointTypeStartVertex;) M9 R' H+ x" \) N8 S
geopoint1.SplineDefiningPointIndex = 0;
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// find the (0,0,0) point- v0 o+ _, v2 ^2 \ O$ [
Sketch::ConstraintGeometry geopoint2;
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Point *pointOriginal;" I1 y+ H# G V0 G% V! y
pointOriginal = workPart->Points()->CreatePoint(sketch1->Origin());- @# _6 j+ Y0 V: v$ G! y
geopoint2.Geometry = pointOriginal;5 W8 q- @( Z; T! X/ P
geopoint2.PointType = Sketch::ConstraintPointTypeStartVertex;
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geopoint2.SplineDefiningPointIndex = 0;% O9 r4 `& g; j6 y9 ^0 M4 R+ L+ d/ y
theSession->ActiveSketch()->CreateCoincidentConstraint(geopoint1,geopoint2); Sketch::ConstraintGeometry geoline1;) H" n6 ?" F2 F& Q( K6 U& l2 W4 i
geoline1.Geometry = line1;) b/ Y0 V2 z; i- y
geoline1.PointType = Sketch::ConstraintPointTypeNone;- F2 k( L4 ~; o
geoline1.SplineDefiningPointIndex = 0;& ?# h D; r/ p3 j4 k) r5 T
theSession->ActiveSketch()->CreateVerticalConstraint(geoline1);
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//..- V' E/ A% i Q6 U
// for line2& E8 o7 j- N) I0 [- h& f
Sketch::ConstraintGeometry geoline2;- M# \" X0 S! U2 X
geoline2.Geometry = line2;( ~0 t. G$ R8 i, Q+ T# D U5 d
geoline2.PointType = Sketch::ConstraintPointTypeNone;
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geoline2.SplineDefiningPointIndex = 0;
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theSession->ActiveSketch()->CreateHorizontalConstraint(geoline2);9 F9 \3 j7 b+ k X
//..5 j6 C, U V* A* `! j4 L1 f/ z5 S
// for line3 P# a0 n4 Q% F f h% l! O
Sketch::ConstraintGeometry geoline3;) g4 `8 P" i2 c* l, T
geoline3.Geometry = line3;
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geoline3.PointType = Sketch::ConstraintPointTypeNone;1 N/ H) `* I. Y& [
geoline3.SplineDefiningPointIndex = 0;
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theSession->ActiveSketch()->CreateVerticalConstraint(geoline3);9 A/ Y5 u; ~* n1 k- W
// use this method to create the constraints
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/*SketchConstraintBuilder *line3constraint;
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line3constraint= workPart->Sketches()->CreateConstraintBuilder();
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line3constraint->GeometryToConstrain()->Add(line3);
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line3constraint->SetConstraintType(SketchConstraintBuilder::ConstraintVertical);+ G. D/ g) G- M
line3constraint->Commit();
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line3constraint->Destroy();*/
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// add dimension6 S6 i+ w5 ~6 d7 s
//..
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// for line1* ?5 [1 e4 T, z Z6 o* }
Sketch::DimensionGeometry dimobject1_start;
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dimobject1_start.AssocType = Sketch::AssocTypeStartPoint;2 a u4 h, X' b) T' j5 d7 Z% n1 v* S
dimobject1_start.AssocValue = 0;
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dimobject1_start.Geometry = line1;9 @( ^7 r, y. z& l, u! A
dimobject1_start.HelpPoint.X = 0 ;) b' m. u; w* y4 B) x
dimobject1_start.HelpPoint.Y = 0 ;
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dimobject1_start.HelpPoint.Z = 0 ;6 K# n& Z( g/ E1 \9 P# y5 O2 Q% U
NXObject *nullNXObject1(NULL);+ b, [3 k# o1 R! W1 y
dimobject1_start.View = nullNXObject1; Sketch::DimensionGeometry dimobject1_end;) j4 l% Z2 D Q* `. p
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 ;* C1 b. v0 D& P+ ]
dimobject1_end.HelpPoint.Y = 0 ;' T/ |1 P4 W1 W0 l% U
dimobject1_end.HelpPoint.Z = 0 ;3 Z }$ B5 R" h% I1 j& J4 o6 u- g
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();
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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;7 V3 R0 V, v, E2 g$ R
dimobject2_start.AssocValue = 0;% X2 f, s6 r/ i1 H9 T& N9 k
dimobject2_start.Geometry = line2;7 B& E8 E6 D% K' O# B* b
dimobject2_start.HelpPoint.X = 0 ;
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dimobject2_start.HelpPoint.Y = 0 ;
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dimobject2_start.HelpPoint.Z = 0 ;
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dimobject2_start.View = nullNXObject1; Sketch::DimensionGeometry dimobject2_end;( V5 A' `$ [( b4 R: r9 |) {
dimobject2_end.AssocType = Sketch::AssocTypeEndPoint;
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dimobject2_end.AssocValue = 0;
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dimobject2_end.Geometry = line2;. }8 ?' H G3 Z ?
dimobject2_end.HelpPoint.X = 0 ;: Z1 H- @1 ]! ^& E/ Z6 }
dimobject2_end.HelpPoint.Y = 0 ;
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dimobject2_end.HelpPoint.Z = 0 ;5 \) V9 [0 b8 _
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 line32 X: N! \: o" b% A6 o- V% g
Sketch::DimensionGeometry dimobject3_start;% y+ A' B; T1 o7 Y
dimobject3_start.AssocType = Sketch::AssocTypeStartPoint;# m; ?2 m, ]+ C8 A6 ^
dimobject3_start.AssocValue = 0;. ` K. N4 n/ }1 x" l* n
dimobject3_start.Geometry = line3;
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dimobject3_start.HelpPoint.X = 0 ;2 e, f6 I- M% W8 e% s# t' S
dimobject3_start.HelpPoint.Y = 0 ;4 c l* V+ Z& z% g' R2 U
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;. S! k& j/ K5 ?+ {
dimobject3_end.AssocValue = 0;
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dimobject3_end.Geometry = line3;# h! V8 _$ S9 c8 X. a
dimobject3_end.HelpPoint.X = 0 ;
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dimobject3_end.HelpPoint.Y = 0 ;# }2 C# n) H. d. f/ k
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 o! f6 v4 y6 X8 r/ r0 u9 l6 G
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/* // revolve the body */
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Features::Feature *nullFeatures_Feature(NULL);. i4 e! g& }2 k1 w9 {. ?
Features::RevolveBuilder *revolveBuilder1;
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revolveBuilder1 = workPart->Features()->CreateRevolveBuilder(nullFeatures_Feature);
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revolveBuilder1->Limits()->StartExtend()->Value()->SetRightHandSide("0");# Q0 n% I' b; ]. l5 G# i
revolveBuilder1->Limits()->EndExtend()->Value()->SetRightHandSide("360");. w( h, w. k& }* j* r
revolveBuilder1->SetTolerance(0.01);
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Section *section1;
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section1 = workPart->Sections()->CreateSection(0.0095, 0.01, 0.5);5 C1 W: J( S2 z' }" ~( Q& I A
revolveBuilder1->SetSection(section1);% }9 P, z: A8 }3 P# v5 r
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section1->SetAllowedEntityTypes(Section::AllowTypesOnlyCurves);& U9 @& q& A7 D% X1 n" X7 `- _! H
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std::vector<Features::Feature *> features1(1);4 _$ {" ]: S0 x) R h" i+ c; V% _
features1[0] = feature1;2 h/ |" _; b) A1 V f6 ]
CurveFeatureRule *curveFeatureRule1;- Q' g* R. x `5 y& m1 B9 B1 j" h
curveFeatureRule1 = workPart->ScRuleFactory()->CreateRuleCurveFeature(features1);! ^; G! \& P% B" U; o! k/ ?8 ?: q
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section1->AllowSelfIntersection(false);0 w4 Y+ ~ t6 l, g* ?
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std::vector<SelectionIntentRule *> rules1(1);: h3 t6 g% k( ?. u% G# C, M0 E
rules1[0] = curveFeatureRule1;
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NXObject *nullNXObject(NULL);5 r+ K/ ~# S5 P0 p5 `* o# c
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;$ F9 g6 C& ?" c* T2 @3 L& \' V2 U: s- X! j
axis1 = workPart->Axes()->CreateAxis(nullPoint, direction1, SmartObject::UpdateOptionWithinModeling);- i$ ]1 Y! T8 X+ d
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revolveBuilder1->SetAxis(axis1); // commit feature
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Features::Feature *feature2;
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feature2 = revolveBuilder1->CommitFeature();2 }/ K# [5 I8 [: L Z) D0 F
revolveBuilder1->Destroy();
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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