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()* M. O+ c( V3 u. `# l
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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);7 r4 M. Q* u# {
sketchInPlaceBuilder1->Plane()->SetMethod(PlaneTypes::MethodTypeFixedZ);; n! ?/ C% Y ]$ ^4 B! a' q
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);
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theSession->Preferences()->Sketch()->SetContinuousAutoDimensioning(false);
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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);
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theSession->Preferences()->Sketch()->SetConstraintSymbolSize(3.0);3 y3 L1 Q; e0 Q# @; r- \' r
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theSession->Preferences()->Sketch()->SetDisplayObjectColor(false);7 ]. D) |& `7 D$ Y0 v! B/ d) q
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theSession->Preferences()->Sketch()->SetDisplayObjectName(true); 7 E O( c+ Q5 \# N$ ^9 E& U: F
NXObject *nXObject1;3 r- E) t0 o0 w; h
nXObject1 = sketchInPlaceBuilder1->Commit();& h7 F3 ^; W5 N! J, E
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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();+ G8 n9 [# G# B1 K" e
sketch1->Activate(Sketch::ViewReorientFalse);4 u4 Z* u% e1 x- K. `
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// define the dimensions 2 e: z* v R! t+ k3 c; D6 Y
double heigth1 = this->doubleHeight1->GetProperties()->GetDouble("Value");
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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];6 G! V+ a4 u6 a o6 V1 Y6 x+ B
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;+ ]8 o& H5 W# o" _ Z) q
height1exp= workPart->Expressions()->CreateSystemExpression(msg1);% c0 X0 j- D4 _; O8 |* T
height2exp= workPart->Expressions()->CreateSystemExpression(msg2);. |, U: I5 ~" L
lengthexp= workPart->Expressions()->CreateSystemExpression(msg3);: V" O3 i5 R/ }; G) i
// these for the dimension position
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Point3d dimOrigin1(-100, heigth1/2, 0.0); " B1 {, p9 b; n* v3 O! l
Point3d dimOrigin2(length/2, heigth1+100, 0.0);: t/ s$ r4 r: C# p
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);
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Point3d endPoint2(length,heigth1,0.0);' @" k7 X; w" X: w
Point3d endPoint3(length,heigth1-heigth2,0.0);
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Line *line1,*line2,*line3,*line4;# ?2 |4 ?; b$ r, y
line1 = workPart->Curves()->CreateLine(startPoint1, endPoint1);
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line2 = workPart->Curves()->CreateLine(endPoint1, endPoint2);9 W% G( Q* a4 K) f: ^/ G7 e. D
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 i9 T- w$ m. \8 N A K6 [. B
theSession->ActiveSketch()->AddGeometry(line2, Sketch::InferConstraintsOptionInferCoincidentConstraints);
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theSession->ActiveSketch()->AddGeometry(line3, Sketch::InferConstraintsOptionInferCoincidentConstraints);: a& @8 w+ u/ Z4 j$ _7 F
theSession->ActiveSketch()->AddGeometry(line4, Sketch::InferConstraintsOptionInferCoincidentConstraints);. P! P! T, I( p1 _1 Z
// add constraints
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//..$ i; k( r8 b" D V1 k* ?
// for line1' t! H6 j" d' |
Sketch::ConstraintGeometry geopoint1;& k" ~' Z2 C, P+ e' b
geopoint1.Geometry = line1;
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geopoint1.PointType = Sketch::ConstraintPointTypeStartVertex;7 t8 m+ Z. f8 y( s
geopoint1.SplineDefiningPointIndex = 0;" U- b! {2 m4 f$ g2 O, a
// find the (0,0,0) point
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Sketch::ConstraintGeometry geopoint2;
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Point *pointOriginal;: |- o. S; I [# B1 U8 j2 k; R
pointOriginal = workPart->Points()->CreatePoint(sketch1->Origin());1 _7 k8 i9 m/ {' _7 F+ O* o+ b. T
geopoint2.Geometry = pointOriginal;
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geopoint2.PointType = Sketch::ConstraintPointTypeStartVertex;, ]( c+ V/ u1 c
geopoint2.SplineDefiningPointIndex = 0;
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theSession->ActiveSketch()->CreateCoincidentConstraint(geopoint1,geopoint2); Sketch::ConstraintGeometry geoline1;4 Q4 m4 {* {3 C( X
geoline1.Geometry = line1; h6 `/ `$ G* A. G5 w
geoline1.PointType = Sketch::ConstraintPointTypeNone;
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geoline1.SplineDefiningPointIndex = 0;% a) s. |* R$ d6 `' p' M. Q+ j
theSession->ActiveSketch()->CreateVerticalConstraint(geoline1);
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//..
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// for line2! s3 \. F: Z G
Sketch::ConstraintGeometry geoline2;
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geoline2.Geometry = line2;/ S! F- a0 f+ ~
geoline2.PointType = Sketch::ConstraintPointTypeNone;
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geoline2.SplineDefiningPointIndex = 0;1 ~' s; n' H8 a
theSession->ActiveSketch()->CreateHorizontalConstraint(geoline2);
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//..
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// for line3
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Sketch::ConstraintGeometry geoline3;5 B# T7 f4 Y' _0 `* g3 t" y
geoline3.Geometry = line3;/ j6 s6 f, y) F; ~
geoline3.PointType = Sketch::ConstraintPointTypeNone;
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geoline3.SplineDefiningPointIndex = 0;) E; ]4 A/ H- h9 `( y& A
theSession->ActiveSketch()->CreateVerticalConstraint(geoline3);8 U% {' H# N' U$ \( B
// use this method to create the constraints7 K# T- m1 \( R* f" A1 W, [
/*SketchConstraintBuilder *line3constraint;8 C& r" T7 F5 d, z1 `& Y& ?
line3constraint= workPart->Sketches()->CreateConstraintBuilder();3 X- k" b: O" v( [( k9 i9 w
line3constraint->GeometryToConstrain()->Add(line3);" T7 g+ Q4 p5 w4 F
line3constraint->SetConstraintType(SketchConstraintBuilder::ConstraintVertical);+ H2 p6 T8 i4 D. h
line3constraint->Commit();
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line3constraint->Destroy();*/
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// add dimension
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//..
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// for line1" I0 x+ c3 x: Z A9 Q* F$ E
Sketch::DimensionGeometry dimobject1_start;
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dimobject1_start.AssocType = Sketch::AssocTypeStartPoint; H$ g7 U. d1 V% w ]
dimobject1_start.AssocValue = 0;
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dimobject1_start.Geometry = line1;1 h% Z3 i+ o! j) C9 ]5 G% Z# F
dimobject1_start.HelpPoint.X = 0 ;+ E4 i6 z& p/ R1 S' T- r$ P
dimobject1_start.HelpPoint.Y = 0 ;
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dimobject1_start.HelpPoint.Z = 0 ;
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NXObject *nullNXObject1(NULL);- R! W3 k% v: a5 C E6 g
dimobject1_start.View = nullNXObject1; Sketch::DimensionGeometry dimobject1_end; ?! ^, v; s; j! u- z4 U
dimobject1_end.AssocType = Sketch::AssocTypeEndPoint;: \2 u+ x' c# H* m
dimobject1_end.AssocValue = 0;
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dimobject1_end.Geometry = line1;
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dimobject1_end.HelpPoint.X = 0 ; y4 T* H g% x" e
dimobject1_end.HelpPoint.Y = 0 ;3 H$ W" f4 T7 p6 @( v
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;$ s( f' w; o+ f9 `% ], ~
dimension1 = sketchDimensionalConstraint1->AssociatedDimension();
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//..
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// for line2& a; H$ c2 V5 V/ v$ u
Sketch::DimensionGeometry dimobject2_start;1 D7 I* J+ g. i9 d" t: l( y) s6 k
dimobject2_start.AssocType = Sketch::AssocTypeStartPoint;
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dimobject2_start.AssocValue = 0;
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dimobject2_start.Geometry = line2;9 {8 g* l8 y# f8 a: V2 K4 X! ]
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;
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dimobject2_end.AssocType = Sketch::AssocTypeEndPoint;' y) ^! }1 \+ _8 Y1 y
dimobject2_end.AssocValue = 0;
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dimobject2_end.Geometry = line2;5 r/ ~. L/ E0 ^$ @
dimobject2_end.HelpPoint.X = 0 ;" q9 d* G) C/ n7 h$ {* R1 Q
dimobject2_end.HelpPoint.Y = 0 ;
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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 line33 K5 q. Q s" ?
Sketch::DimensionGeometry dimobject3_start;* B9 Q2 \8 k6 M1 h0 X7 n# |
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 ;! S7 f5 z3 M g+ A4 t
dimobject3_start.HelpPoint.Y = 0 ;) i6 ` N; u2 S1 I/ N+ n( S: T, @8 h
dimobject3_start.HelpPoint.Z = 0 ;6 B. {( x- a1 V8 ` @4 ?
dimobject3_start.View = nullNXObject1; Sketch::DimensionGeometry dimobject3_end;
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dimobject3_end.AssocType = Sketch::AssocTypeEndPoint;, S4 Z+ G. z# [, m
dimobject3_end.AssocValue = 0;
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dimobject3_end.Geometry = line3;: e- K) O5 H9 H3 u
dimobject3_end.HelpPoint.X = 0 ;
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dimobject3_end.HelpPoint.Y = 0 ;
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dimobject3_end.HelpPoint.Z = 0 ;. P/ ?# G; v2 q8 j) O
dimobject3_end.View = nullNXObject1; SketchDimensionalConstraint *sketchDimensionalConstraint3 = theSession->ActiveSketch()->CreateDimension(Sketch::ConstraintTypeVerticalDim,dimobject3_start,dimobject3_end,dimOrigin3,height2exp,Sketch::DimensionOptionCreateAsDriving); Annotations::Dimension *dimension3;0 V9 Q6 z1 o. {$ t. }
dimension3 = sketchDimensionalConstraint3->AssociatedDimension(); //workPart->Expressions()->Delete(height1exp); theSession->ActiveSketch()->Update(); theSession->ActiveSketch()->Deactivate(Sketch::ViewReorientFalse,Sketch::UpdateLevelModel);
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/* // revolve the body */
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Features::Feature *nullFeatures_Feature(NULL);: x+ ^7 {% N" Z# P( H' D2 H
Features::RevolveBuilder *revolveBuilder1;* |7 @' q3 `' |( w; M; M* 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");& T6 `& b$ }5 R6 t
revolveBuilder1->SetTolerance(0.01);
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Section *section1;
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section1 = workPart->Sections()->CreateSection(0.0095, 0.01, 0.5);
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revolveBuilder1->SetSection(section1);9 B$ F/ n9 K7 C. m
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section1->SetAllowedEntityTypes(Section::AllowTypesOnlyCurves);2 g/ N- i$ M3 D. V$ u$ w
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std::vector<Features::Feature *> features1(1);
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features1[0] = feature1;4 i/ P8 u2 o! b; r0 d
CurveFeatureRule *curveFeatureRule1;
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curveFeatureRule1 = workPart->ScRuleFactory()->CreateRuleCurveFeature(features1);
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section1->AllowSelfIntersection(false);7 C o1 P5 i- _
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std::vector<SelectionIntentRule *> rules1(1);
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rules1[0] = curveFeatureRule1;& O) e3 X8 q$ L! H) G- h
NXObject *nullNXObject(NULL);
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Point3d helpPoint1(0.0, 0.0, 0.0);* k+ d5 |. M7 S, A1 ~5 H- @
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);8 p0 T ]" Y7 Y0 V
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Point *nullPoint(NULL);3 a# j; q8 p1 R; s Z2 R
Axis *axis1;4 {$ X. Q0 h$ Y( L9 D% O3 `) s, g; P
axis1 = workPart->Axes()->CreateAxis(nullPoint, direction1, SmartObject::UpdateOptionWithinModeling);
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revolveBuilder1->SetAxis(axis1); // commit feature. o- f& ~$ K% r* }- M
Features::Feature *feature2;
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feature2 = revolveBuilder1->CommitFeature();; k. G" `# p; q7 J' r3 W z
revolveBuilder1->Destroy();: M: O4 o H) z) o X9 s( f
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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