如何在⾃⼰的项⽬中使⽤OpenCascade7.3（VS2017）项⽬初始设置
在VS2017中创建⼀个单⽂档MFC项⽬（本例以mOCCT为名称）
在项⽬属性的VC++页⾯设置包含⽬录、库⽬录，在链接器的输⼊中添加OCC库⽬录下的所有.lib⽂件名称
添加头⽂件
在stdafx.h中添加：
#include <BRepTools.hxx>
#include <Standard_DefineHandle.hxx>
#include <DsgPrs_LengthPresentation.hxx>
#include <GCPnts_TangentialDeflection.hxx>
#include <Geom_Axis2Placement.hxx>
#include <Geom_CartesianPoint.hxx>
#include <Geom_Line.hxx>
#include <Geom_Surface.hxx>
#include <BRepAdaptor_Surface.hxx>
#include <GeomAbs_CurveType.hxx>
#include <GeomAdaptor_Curve.hxx>
#include <GeomTools_Curve2dSet.hxx>
#include <gp_Vec.hxx>
#include <Graphic3d_NameOfMaterial.hxx>
#include <MMgt_TShared.hxx>
#include <OSD_Environment.hxx>
#include <Precision.hxx>
#include <Prs3d_IsoAspect.hxx>
#include <Prs3d_LineAspect.hxx>
#include <Prs3d_Projector.hxx>
#include <Prs3d_Text.hxx>
#include <Quantity_Factor.hxx>
#include <Quantity_Length.hxx>
#include <Quantity_NameOfColor.hxx>
#include <Quantity_PhysicalQuantity.hxx>
#include <Quantity_PlaneAngle.hxx>
#include <Quantity_TypeOfColor.hxx>
#include <SelectMgr_EntityOwner.hxx>
#include <SelectMgr_SelectableObject.hxx>
#include <SelectMgr_Selection.hxx>
#include <SelectMgr_SelectionManager.hxx>
#include <SelectMgr_ListOfFilter.hxx>
#include <SelectMgr_Filter.hxx>
#include <StdSelect_EdgeFilter.hxx>
#include <StdSelect_ShapeTypeFilter.hxx>
#include <Standard_Boolean.hxx>
#include <Standard_CString.hxx>
#include <Standard_ErrorHandler.hxx>
#include <Standard_Integer.hxx>
#include <Standard_IStream.hxx>
#include <Standard_Macro.hxx>
#include <Standard_NotImplemented.hxx>
#include <Standard_OStream.hxx>
#include <Standard_Real.hxx>
#include <StdPrs_Curve.hxx>
#include <StdPrs_Point.hxx>
#include <StdPrs_PoleCurve.hxx>
#include <TCollection_AsciiString.hxx>
#include <TColgp_Array1OfPnt2d.hxx>
#include <TColgp_HArray1OfPnt2d.hxx>
#include <TCollection_AsciiString.hxx>
#include <TColStd_HSequenceOfTransient.hxx>
#include <TColStd_MapIteratorOfMapOfTransient.hxx>
#include <TColStd_MapIteratorOfMapOfTransient.hxx>  #include <TColStd_MapOfTransient.hxx>
#include <TopExp_Explorer.hxx>
#include <TopoDS.hxx>
#include <TopoDS_Compound.hxx>
#include <TopoDS_Shape.hxx>
#include <TopoDS_Solid.hxx>
#include <TopoDS_Vertex.hxx>
#include <TopExp.hxx>
#include <TopTools_HSequenceOfShape.hxx>
#include <UnitsAPI.hxx>
#include <V3d_View.hxx>
#include <V3d_Viewer.hxx>
#include <WNT_Window.hxx>
#include <Prs3d_PointAspect.hxx>
#include <AIS_Point.hxx>
#include <AIS_InteractiveContext.hxx>
#include <AIS_Shape.hxx>
#include <BRep_Tool.hxx>
#include <BRepAlgoAPI_Fuse.hxx>
#include <BRepBuilderAPI_MakeEdge.hxx>
#include <BRepBuilderAPI_MakeFace.hxx>
#include <BRepBuilderAPI_MakeWire.hxx>
#include <BRepBuilderAPI_MakeVertex.hxx>
#include <BRepBuilderAPI_Transform.hxx>
#include <BRepPrimAPI_MakeCone.hxx>
#include <BRepPrimAPI_MakeRevol.hxx>
#include <BRepFilletAPI_MakeFillet.hxx>
#include <BRepBuilderAPI_Copy.hxx>
#include <BRepBuilderAPI_MakePolygon.hxx>
#include <BRepLib.hxx>
#include <BRepOffsetAPI_MakeThickSolid.hxx>
#include <BRepOffsetAPI_ThruSections.hxx>
#include <BRepPrimAPI_MakeCylinder.hxx>
#include <BRepPrimAPI_MakePrism.hxx>
#include <BRepPrimAPI_MakeTorus.hxx>
#include <BRepAlgoAPI_Section.hxx>
#include <BRepPrimAPI_MakeSphere.hxx>
#include <BRepFeat_SplitShape.hxx>
#include <TColgp_HArray1OfPnt.hxx>
#include <GeomAPI_Interpolate.hxx>
#include <GC_MakeArcOfCircle.hxx>
#include <GC_MakeSegment.hxx>
#include <GC_MakeCircle.hxx>
#include <GCE2d_MakeSegment.hxx>
#include <gp.hxx>
#include <gp_Ax1.hxx>
#include <gp_Ax2.hxx>
#include <gp_Ax2d.hxx>
#include <gp_Dir.hxx>
#include <gp_Dir2d.hxx>
#include <gp_Pnt.hxx>
#include <gp_Pnt2d.hxx>
#include <gp_Trsf.hxx>
#include <gp_Vec.hxx>
#include <Geom_CylindricalSurface.hxx>
#include <Geom_Plane.hxx>
#include <Geom_Surface.hxx>
#include <Geom_TrimmedCurve.hxx>
#include <Geom2d_Ellipse.hxx>
#include <Geom2d_TrimmedCurve.hxx>
#include <TopExp_Explorer.hxx>
#include <TopoDS.hxx>
#include <TopoDS_Edge.hxx>
#include <TopoDS_Face.hxx>
#include <TopoDS_Wire.hxx>
#include <TopoDS_Wire.hxx>
#include <TopoDS_Shape.hxx>
#include <TopoDS_Compound.hxx>
#include <GCPnts_AbscissaPoint.hxx>
#include <BRepAdaptor_Curve.hxx>
#include <GeomLib.hxx>
#include <GeomConvert_CompCurveToBSplineCurve.hxx>
#include <TopTools_ListOfShape.hxx>
#include <TopTools_ListIteratorOfListOfShape.hxx>
#include <TopTools_DataMapOfShapeInteger.hxx>
#include <TopTools_DataMapOfShapeReal.hxx>
#include <TopTools_IndexedDataMapOfShapeAddress.hxx>
#include <V3d_PositionalLight.hxx>
#include <V3d_DirectionalLight.hxx>
#include <V3d_AmbientLight.hxx>
#include <IGESControl_Controller.hxx>
#include <IGESControl_Writer.hxx>
#include <Interface_Static.hxx>
#include <OpenGl_GraphicDriver.hxx>
#include <Graphic3d_GraphicDriver.hxx>
添加代码
MFC⽂档分成三个结构:
Application
Doc
View
在Application中mOCCT.h中的类中加⼊代码：
Handle(Graphic3d_GraphicDriver) m_GraphicDriver;
在对应的类的实现⽂件mOCCT.cpp的类的构造函数中添加:
try {
Handle(Aspect_DisplayConnection) aDisplayConnection;
m_GraphicDriver = new OpenGl_GraphicDriver(aDisplayConnection);
}
catch (Standard_Failure) {
AfxMessageBox(L"(Error Ocured in Initializing the Opencascade graphic variable.)"); }
接着在头⽂件mOCCT.h中添加⼀个获取m_GraphicDriver的⽅法：
Handle(Graphic3d_GraphicDriver) GetGraphicDriver(){return m_GraphicDriver;}
接着处理Document Class在mOCCTDoc.h中定义的类中添加：
Handle(AIS_InteractiveContext) myAISContext;
Handle(V3d_Viewer) myViewer;
Handle(V3d_Viewer) GetViewer(void) {return myViewer;}
接着去实现⽂档mOCCTDoc.cpp中类的构造器中添加：
Handle(Graphic3d_GraphicDriver) theGraphicDriver = ((CmOCCTApp*)AfxGetApp())->GetGraphicDriver();
myViewer = new V3d_Viewer(theGraphicDriver);
myViewer->SetDefaultLights();
myViewer->SetLightOn();
myAISContext = new AIS_InteractiveContext(myViewer);
myAISContext->SetDisplayMode(AIS_Shaded,true);
myAISContext->SetAutomaticHilight(Standard_False);
去mOCCTView.h中在定义的CmOCCTView Class中添加：
Handle(V3d_View) myView;
并重写OnInitialUpdate()函数:
virtual void OnInitialUpdate();
在对应的实现⽂件中实现该函数：
void CmOCCTView::OnInitialUpdate() {
myView = GetDocument()->GetViewer()->CreateView();
myView->SetShadingModel(V3d_GOURAUD);
Handle(Graphic3d_GraphicDriver) theGraphicDriver = ((CmOCCTApp*)AfxGetApp())->GetGraphicDriver();
Aspect_Handle aWindowHandle = (Aspect_Handle)GetSafeHwnd();
Handle(WNT_Window) aWntWindow = new WNT_Window(GetSafeHwnd());
myView->SetWindow(aWntWindow);
if (!aWntWindow->IsMapped()) {
aWntWindow->Map();
}
Standard_Integer w = 100;
Standard_Integer h = 100;
aWntWindow->Size(w, h);
::PostMessage(GetSafeHwnd(), WM_SIZE, SIZE_RESTORED, w + h * 65536);
myView->FitAll();
myView->ZBufferTriedronSetup(Quantity_NOC_RED, Quantity_NOC_GREEN, Quantity_NOC_BLUE1, 0.8, 0.05, 12); myView->TriedronDisplay(Aspect_TOTP_LEFT_LOWER, Quantity_NOC_WHITE, 0.2, V3d_ZBUFFER);
}
在下⽅的OnDraw中加⼊:
myView->MustBeResized();
myView->Update();
resized编译⽣成即可看到界⾯：
注意：
1. 在添加代码时会在new关键字处报错
将当前⽂件下的
#ifdef _DEBUG
#define new DEBUG_NEW
#endif`
删去即可
2. 如果编译提醒缺少dll，请将opencascade的win64/vc14/bin⽬录以及所有第三⽅库的bin⽬录添加到系统环境变量Path，如此可以搜索到相应dll⽂件。或者将dll⽂件复制到exe⽂件⽬录下。
绘图
在mOCCTDoc.cpp和mOCCTDoc.h中写⼊DrawSphere代码：（需要在mOCCTDoc.cpp中include 头⽂件 #include “mOCCTView.h”）

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