CATIA二次开发入门教程---21 创建草图几何图形
CATIA二次开发入门教程---21 创建草图几何图形////////获得Editor、Document、Container、设置GSMFactory
CATFrmEditor* pEditor = CATFrmEditor::GetCurrentEditor();
CATDocument *pDoc = pEditor->GetDocument();
CATIContainerOfDocument_var spConODocs = pDoc;
CATIContainer* pContainer; //Container
CATIPrtContainer* pPrtContainer;//PartContainer
CATIGSMFactory_var spGSMFactory; //GSM工厂
CATIPrtPart_var spPrt ;//
HRESULT hr = spConODocs->GetSpecContainer(pContainer);//获取Container
hr =pContainer->QueryInterface(IID_CATIPrtContainer,(void **)&pPrtContainer);//获取PrtContainer
spPrt = pPrtContainer->GetPart();
CATListValCATISpecObject_var spListRefPlanes = spPrt->GetReferencePlanes();//获取3个参考平面
CATISpecObject_var spSketchPlane = spListRefPlanes;//第三个平面
CATISketchFactory_var spSketchFactOnPrtCont(pPrtContainer);//草图工厂
CATISketch_var spSketch = spSketchFactOnPrtCont->CreateSketch( spSketchPlane ); //创建草图
CATI2DWFFactory_var spWF2DFactOnSketch(spSketch);
spSketch->OpenEdition(); //进入草图开始绘图
double p1 = {0,0};
double p2 = {100,0};
double p3 = {100,100};
double p4 = {0,100};
CATI2DPoint_var spP1,spP2,spP3,spP4;
spP1 = spWF2DFactOnSketch->CreatePoint(p1);
spP2 = spWF2DFactOnSketch->CreatePoint(p2);
spP3 = spWF2DFactOnSketch->CreatePoint(p3);
spP4 = spWF2DFactOnSketch->CreatePoint(p4);
CATI2DLine_var spLine1 = spWF2DFactOnSketch->CreateLine(p1,p2);
CATI2DLine_var spLine2 = spWF2DFactOnSketch->CreateLine(p2,p3);
CATI2DLine_var spLine3= spWF2DFactOnSketch->CreateLine(p3,p4);
CATI2DLine_var spLine4 = spWF2DFactOnSketch->CreateLine(p4,p1);
CATI2DCurve_var spCurve1,spCurve2,spCurve3,spCurve4;
spCurve1 = spLine1;
spCurve2 = spLine2;
spCurve3 = spLine3;
spCurve4 = spLine4;
spCurve1->SetStartPoint(spP1);
spCurve1->SetEndPoint(spP2);
spCurve2->SetStartPoint(spP2);
spCurve2->SetEndPoint(spP3);
spCurve3->SetStartPoint(spP3);
spCurve3->SetEndPoint(spP4);
spCurve4->SetStartPoint(spP4);
spCurve4->SetEndPoint(spP1);
spSketch->CloseEdition(); //退出草图
CATISpecObject_var spObject = spSketch;
spObject->Update();
在上一节的基础上，开始创建草图。首先创建草图工厂：
CATI2DWFFactory_var sketch2DFactory(spSketch);
下面创建点：
CATI2DPoint_var spPt_bottom_left, spPt_bottom_right, spPt_top_right, spPt_top_left;
double pt_bottom_left= {10., 10.};
double pt_bottom_right = {50., 10.};
double pt_top_right = {50., 50.};
double pt_top_left = {10., 50.};
spPt_bottom_left= sketch2DFactory->CreatePoint(pt_bottom_left);
spPt_bottom_right = sketch2DFactory->CreatePoint(pt_bottom_right);
spPt_top_right = sketch2DFactory->CreatePoint(pt_top_right);
spPt_top_left = sketch2DFactory->CreatePoint(pt_top_left);
开始创建线：
CATI2DLine_var spLine1, spLine2, spLine3, spLine4;
spLine1 = sketch2DFactory->CreateLine(pt_bottom_left,pt_bottom_right);
spLine2 = sketch2DFactory->CreateLine(pt_bottom_right,pt_top_right);
spLine3 = sketch2DFactory->CreateLine(pt_top_right,pt_top_left);
spLine4 = sketch2DFactory->CreateLine(pt_top_left,pt_bottom_left);
将线连接起来：
CATI2DCurve_var spCurve1 (spLine1);
CATI2DCurve_var spCurve2 (spLine2);
CATI2DCurve_var spCurve3 (spLine3);
CATI2DCurve_var spCurve4 (spLine4);
spCurve1->SetStartPoint(spPt_bottom_left);
spCurve1->SetEndPoint(spPt_bottom_right);
spCurve2->SetStartPoint(spPt_bottom_right);
spCurve2->SetEndPoint(spPt_top_right);
spCurve3->SetStartPoint(spPt_top_right);
spCurve3->SetEndPoint(spPt_top_left);
spCurve4->SetStartPoint(spPt_top_left);
spCurve4->SetEndPoint(spPt_bottom_left);
然后退出草图：
spSketch->CloseEdition();
非常棒，有没有接口之间的关系导图呀
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