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有两种方式可以创建草图：! @/ X$ F" N* j! q2 l
1.通过参考平面创建
# Z$ e+ C0 |6 N6 H: B1 z& S//获得参考平面- F8 `2 Q5 n+ [, t$ L7 O
CATLISTV(CATISpecObject_var) spRefPlanes = spPart->GetReferencePlanes();0 ?' U( d% ]. U
//初始化草图工厂( q/ ?" G$ Y/ m& }% u/ C4 e/ I& W0 ?
CATISkeTChFactory_var spSketchFactory(spContainer);1 U* l+ V- M0 c* p4 b/ R
//在XY plane 上创建草图1 |2 O4 |7 m$ Z# R5 ] T/ v
CATISketch_var spSketch = spSketchFactory->CreateSketch(spRefPlanes[1]));! R: F$ p- A! P/ J- y) h
2.通过原点和两个矢量方向* v. K, e' @) ]2 e+ q* j) e
该方法通过定义一个原点和两个方向 pH、pV 进行创建。% A0 P n$ h/ r5 C- D% B4 C
定义原点和方向：
: d9 S, M5 |$ ^- s3 e, i0 Kdouble pOrigin[3]={0,0,10};
4 M. F5 o/ y; K2 `. V) t0 W5 xdouble pH[3]={1,0,0};
* @; O& \2 D, n+ v& fdouble pV[3]={0,1,0};0 V: f2 o( z& [( h4 c! c1 `/ ?
CATISketchFactory_var spSketchFactory(spContainer);
7 h- ?% N2 S7 O2 s- S$ O; H' BCATISketch_var spSketch = spSketchFactory->CreateSketch(pOrigin, pH, pV);
2 d2 ^7 T9 G4 n% D/ S( s3 X- M$ t$ c% ^1 [/ H, p8 l+ q) {6 n
5 S; ]2 }; |7 d) G5 k
sp2DFactory(spSketch);3 E. H& N9 Z: G& @
//下面创建点0 @1 G& @) B; v+ x! H3 `# t
CATI2DPoint_var spPt_bottom_left, spPt_bottom_right, spPt_top_right, spPt_top_left;
" A9 F! ~) L* V0 ?4 C2 Ndouble pt_bottom_left[2] = {10, 10};
& m) c f1 L8 ?( S2 X& ydouble pt_bottom_right[2] = {50, 10};4 L" J6 h8 B9 z' o! H8 A
double pt_top_right[2] = {50, 50};: D F4 S5 W2 o5 e
double pt_top_left[2] = {10, 50};# O* n1 f+ Y, L7 d
spPt_bottom_left = sketch2DFactory->CreatePoint(pt_bottom_left);
, k. b8 v9 [8 W! i# g% AspPt_bottom_right = sketch2DFactory->CreatePoint(pt_bottom_right);
( o4 K, H4 {% j4 P* B/ D/ _spPt_top_right = sketch2DFactory->CreatePoint(pt_top_right);
) \4 i) ?9 ?. j4 ^# H9 IspPt_top_left = sketch2DFactory->CreatePoint(pt_top_left);
5 }4 ?( u) ~! i5 R% B//开始创建线* S2 O) ~8 |1 `' y4 ?" L3 C% T3 O
CATI2DLine_var spLine1, spLine2, spLine3, spLine4;
3 }* f) \ }8 g$ U fspLine1 = sketch2DFactory->CreateLine(pt_bottom_left,pt_bottom_right);! i3 n1 d% K, [4 p- t8 G% O4 `
spLine2 = sketch2DFactory->CreateLine(pt_bottom_right,pt_top_right);& ?% d. Y% x; A0 }0 w
spLine3 = sketch2DFactory->CreateLine(pt_top_right,pt_top_left);- F6 {% I8 x* q5 y! I/ U+ ]
spLine4 = sketch2DFactory->CreateLine(pt_top_left,pt_bottom_left);. e9 o8 {8 v$ s0 r- {
//将线的首尾连接起来. u7 X0 |- m1 `8 B' N: V+ w$ l
4 }' [$ K5 W/ i: p5 j, o$ oCATI2DCurve_var spCurve1 (spLine1);
2 `' Y: {- U3 g; i! l2 f' _, DCATI2DCurve_var spCurve2 (spLine2);5 |( Y9 J; F% W3 @7 A" P) S7 l
CATI2DCurve_var spCurve3 (spLine3);0 n/ ]. e& @" d( m
CATI2DCurve_var spCurve4 (spLine4); e; o: }; ?/ V$ y" J
spCurve1->SetStartPoint(spPt_bottom_left);
1 P- t9 f6 R7 _0 Y' K2 Q) ]0 `% @spCurve1->SetEndPoint(spPt_bottom_right);
* R$ i! P! ?; r+ F! Y& W- y. JspCurve2->SetStartPoint(spPt_bottom_right);
$ V1 x% @7 [8 B- U4 WspCurve2->SetEndPoint(spPt_top_right);/ ^* a- R y) |0 _7 e
spCurve3->SetStartPoint(spPt_top_right);
: A8 _. r0 ]. }( r4 a6 Q3 L6 i( w2 uspCurve3->SetEndPoint(spPt_top_left);
8 @5 U6 R2 p4 [. _/ ~spCurve4->SetStartPoint(spPt_top_left);
8 e) y3 j+ ~& c4 B! C# SspCurve4->SetEndPoint(spPt_bottom_left);
( t7 L- x, u! P2 `) }6 Z6 c; V. \//然后退出草图：
2 Q$ b' X: Y H5 h% q. f. |spSketch->CloseEdition();6 p6 z* \1 e+ O8 A* |
# r5 R" V! T. l2 S( R4 S2 D
* l3 b: ?2 G# r
7 n1 i0 Y( I4 A, q创建草图约束
$ Y2 E: \! P& P: fCATI2DConstraintFactory_var spConstraint2DFactory(spSketch);
- y( O% d6 Y2 U* n. f; ~//定义spLine1 为水平约束2 s; N' C' F; Q6 a; D
spConstraint2DFactory->CreateConstraint( spLine1, NULL, NULL, NULL, NULL, NULL,
7 A, ~5 [$ Y1 sNULL, Cst2DType_Horizontal, 0, 0 );) b: H9 ^% g$ K/ g; s* g% e
//定义spLine2 为垂直约束' g) j$ J, c, k i
spConstraint2DFactory->CreateConstraint( spLine2, NULL, NULL, NULL, NULL, NULL,
: @8 T% }' b% C0 \3 ^; `' CNULL, Cst2DType_Vertical, 0, 0 );8 g4 X$ P% B$ C+ P
//定义spLine3 为水平约束
' ?$ d. H: f) A1 D& ~1 MspConstraint2DFactory->CreateConstraint( spLine3, NULL, NULL, NULL, NULL, NULL,% j D, C& w5 S Z1 P( m+ u
NULL, Cst2DType_Horizontal, 0, 0 );, | S. J, U- U% s, T) W* v
//定义spLine4 为垂直约束# \& ]/ E5 x3 V4 {* H8 _# \
spConstraint2DFactory->CreateConstraint( spLine4, NULL, NULL, NULL, NULL, NULL,
6 p# ]4 H9 U& TNULL, Cst2DType_Vertical, 0, 0 );# E- {# I9 t) Q# D8 k: w8 X' k6 i: X
//定义spLine2 的长度约束
! q! O, M/ |9 J, wspConstraint2DFactory->CreateConstraint( spLine2, NULL, NULL, NULL, NULL, NULL,
1 w( y A( P6 i: j$ a' @+ Q# oNULL, Cst2DType_Length, 0, 0 );4 l" v1 \ n* P# C# K% J
5 ^6 V, R& c; l' ]! _//定义spLine2 与spLine4 的距离约束
% l* T* _6 m* R. i1 uspConstraint2DFactory->CreateConstraint( spLine2, NULL, spLine4, NULL, NULL, NULL,
& V0 T: u1 H5 d# a, Z9 u) FNULL, Cst2DType_Distance, 0, 0 );
' h" A; e- k( n4 i9 z$ H//定义spPt_bottom_left 与X 轴的距离约束' A# w* O g2 r1 n
CATI2DAxis_var spSupport = NULL_var;
& _) k0 B7 T0 I) q: @spSketch->GetAbsolute2DAxis(spSupport);2 S+ I# k2 L! Z! W# C8 k3 _
spConstraint2DFactory->CreateConstraint( spPt_bottom_left, NULL,
6 D& l; N+ |. ^& R$ J, f' X+ sspSupport->GetHDirection(), NULL, NULL, NULL, NULL,Cst2DType_Distance, 0, 0 );
* T5 g, K* e: }! E9 f, j4 ^1 \" D; {//定义spPt_bottom_left 与Y 轴的距离约束0 Y3 K$ C% Q8 H8 R `% N0 D
spConstraint2DFactory->CreateConstraint( spPt_bottom_left, NULL,2 Z) C4 W! ^$ a7 _& P# h: ?
spSupport->GetVDirection(), NULL, NULL, NULL, NULL,Cst2DType_Distance, 0, 0 );5 X& i" K7 {$ |
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