<이미지 편집이 순조롭지 못합니다.. ㅠㅠ > 3개의 그림을 세로로 나열하고 싶었으나.. 제공되지 않는듯..>
첫번째 그림 : STEP 및 기타 Solid Viewing을 제공하는 오픈 소스입니다. 출처는 Opencascade C#예제 소스에 담겨져 있습니다.
두번째~ 네번째 그림 : STEP파일을 읽어오기 위해 해당 메뉴버튼을 눌른 상황입니다.
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●솔루션 내 프로젝트
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●사용 언어
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IE(인터페이스)
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C#
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OCC(동적 클래스 라이브러리)
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C++
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shell(동적 클래스 라이브러리)
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C++
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<step 파일 열기 버튼 클릭시 최초 접근하는 메소드>
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private void ImportStep_Click(object sender, System.EventArgs e)
{
Form2 curForm = (Form2) this.ActiveMdiChild;
if (curForm == null)
return;
this.myModelFormat=IE.ModelFormat.STEP;
curForm.ImportModel(this.myModelFormat);
}
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<모델 포맷의 정의>
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protected IE.ModelFormat myModelFormat;
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<this.ActiveMdiChild;>
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//현재 활성상태인 MDI(다중 문서 인터페이스)자식창을 가져온다.
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<curForm.ImportModel(this.myModelFormat);> (Form2.cs 로 이동한다.)
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public void ImportModel(IE.ModelFormat format)
{
int theformat=10;
System.Windows.Forms.OpenFileDialog openDialog = new OpenFileDialog();
string DataDir=((Environment.GetEnvironmentVariable("CASROOT")) + "\\..\\data");
string filter="";
switch (format)
{
case ModelFormat.BREP:
openDialog.InitialDirectory = (DataDir + "\\occ");
theformat=0;
filter= "BREP Files (*.brep *.rle)|*.brep; *.rle"
break;
case ModelFormat.CSFDB:
theformat=1;
filter= "CSFDB Files (*.csfdb)|*.csfdb"
break;
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case IE.ModelFormat.STEP:
openDialog.InitialDirectory = (DataDir + "\\step");
theformat=2;
filter="STEP Files (*.stp *.step)|*.stp; *.step"
break;
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case IE.ModelFormat.IGES:
openDialog.InitialDirectory = (DataDir + "\\iges");
theformat=3;
filter="IGES Files (*.igs *.iges)|*.igs; *.iges"
break;
default:
break;
}
openDialog.Filter = filter+"|All files (*.*)|*.*" ;
if(openDialog.ShowDialog() == DialogResult.OK)
{
string filename = openDialog.FileName;
if ( filename=="")
return;
this.Cursor=System.Windows.Forms.Cursors.WaitCursor;
if (!myView.TranslateModel(filename, theformat, true))
MessageBox.Show("Cann't read this file", "Error!",
MessageBoxButtons.OK, MessageBoxIcon.Warning);
this.Cursor=System.Windows.Forms.Cursors.Default;
}
this.myView.ZoomAllView();
}
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<this.myView.ZoomAllView();> (shell.h)
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void ZoomAllView(void)
{
if (myOCCViewer != NULL)
myOCCViewer->ZoomAllView();
}
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<myOCCViewer->ZoomAllView();> (OCCViewer.cpp)
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void OCCViewer::ZoomAllView(void)
{
if (!myView.IsNull())
{
myView->FitAll();
myView->ZFitAll();
}
}
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<if (!myView.IsNull())> (Handle_Standard_Transient.hxx)
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//! Check for being null
Standard_Boolean IsNull() const
{
return entity == UndefinedHandleAddress;
}
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<myView->FitAll();> (Handle_V3d_View.hxx)
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V3d_View* operator->() const
{
return (V3d_View *)ControlAccess();
}
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<return (V3d_View *)ControlAccess();> (Handle_Standard_Transient.hxx)
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Standard_Transient* ControlAccess() const
{
return entity;
}
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<myView->ZFitAll();> (Handle_V3d_View.hxx)
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V3d_View* operator->() const
{
return (V3d_View *)ControlAccess();
}
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<return (V3d_View *)ControlAccess();> (Handle_Standard_Transient.hxx)
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Standard_Transient* ControlAccess() const
{
return entity;
}
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(Form1.cs)
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private void Form1_Activated(object sender, System.EventArgs e)
{
if (this.toolBarView.Visible) //true
this.SelectionChanged();
}
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<this.SelectionChanged();> (Form1.cs)
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public void SelectionChanged()
{
if (this.MdiChildren.Length == 0 )
return
IE.Form2 curForm = (IE.Form2) this.ActiveMdiChild;
if ( curForm == null )
return
switch (curForm.View.DisplayMode())
{
case -1:
this.shading.Enabled=false
this.wireframe.Enabled=false
break
case 0:
this.wireframe.Enabled=false
this.shading.Enabled=true
this.transparency.Enabled=false
break
case 1:
this.wireframe.Enabled=true
this.shading.Enabled=false
this.transparency.Enabled=true
break
case 10:
this.wireframe.Enabled=true
this.shading.Enabled=true
this.transparency.Enabled=true
break
default:
break
}
bool IsSelected = curForm.View.IsObjectSelected();
if (IsSelected)
{
this.color.Enabled=true
this.material.Enabled=true
this.delete.Enabled=true
}
else
{
this.color.Enabled=false
this.material.Enabled=false
this.transparency.Enabled=false
this.delete.Enabled=false
}
if (curForm.DegenerateMode)
{
this.HlrOff.Pushed=false
this.HlrOn.Pushed=true
}
else
{
this.HlrOff.Pushed=true
this.HlrOn.Pushed=false
}
if (curForm.Mode == IE.CurrentAction3d.CurAction3d_WindowZooming)
this.ZoomWin.Pushed=false
}
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<switch (curForm.View.DisplayMode())> (Form2.cs) -> (shell.h)
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public shell View
{
get
{
return this.myView;
}
set
{
this.myView=value
}
}
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int DisplayMode(void)
{
if (myOCCViewer != NULL)
return myOCCViewer->DisplayMode();
else return -1;
}
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<return myOCCViewer->DisplayMode();> (OCCViewer.cpp)
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int OCCViewer::DisplayMode(void)
{
if (myAISContext.IsNull())
return -1;
int mode = -1;
bool OneOrMoreInShading=false
bool OneOrMoreInWireframe=false
for (myAISContext->InitCurrent(); myAISContext->MoreCurrent(); myAISContext->NextCurrent())
{
if ( myAISContext->IsDisplayed( myAISContext->Current(), 1 ) )
OneOrMoreInShading = true
if ( myAISContext->IsDisplayed( myAISContext->Current(), 0 ) )
OneOrMoreInWireframe = true
}
if (OneOrMoreInShading&&OneOrMoreInWireframe)
mode=10;
else if(OneOrMoreInShading)
mode=1;
else if (OneOrMoreInWireframe)
mode=0;
return mode;
}
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<if (myAISContext.IsNull())> (Handle_Standard_Transient.hxx)
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//! Check for being null
Standard_Boolean IsNull() const
{
return entity == UndefinedHandleAddress;
}
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<for(myAISContext->InitCurrent(); myAISContext->MoreCurrent(); myAISContext->NextCurrent())> (OCCViewr.cpp)
-> (Handle_AIS_InteractiveContext.hxx)
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AIS_InteractiveContext* operator->() const
{
return (AIS_InteractiveContext *)ControlAccess();
}
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<return (AIS_InteractiveContext *)ControlAccess();> (Handle_Standard_Transient.hxx)
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//! Returns non-const pointer to referred object
Standard_Transient* ControlAccess() const
{
return entity;
}
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->(Handle_AIS_InteractiveContext.hxx)
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AIS_InteractiveContext* operator->() const
{
return (AIS_InteractiveContext *)ControlAccess();
}
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<return (AIS_InteractiveContext *)ControlAccess();> ->(Handle_Standard_Transient.hxx)
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//! Returns non-const pointer to referred object
Standard_Transient* ControlAccess() const
{
return entity;
}
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<bool IsSelected = curForm.View.IsObjectSelected();> (Form1.cs)
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public shell View
{
get
{
return this.myView;
}
set
{
this.myView=value
}
}
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->(shell.h)
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bool IsObjectSelected(void){
if (myOCCViewer != NULL)
return myOCCViewer->IsObjectSelected();
else
return false
}
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<return myOCCViewer->IsObjectSelected();> (OCCViewer.cpp)
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bool OCCViewer::IsObjectSelected(void)
{
if (myAISContext.IsNull())
return false
myAISContext->InitCurrent();
return (bool)myAISContext->MoreCurrent();
}
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<if (myAISContext.IsNull())> (Handle_Standard_Transient.hxx)
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//! Check for being null
Standard_Boolean IsNull() const
{
return entity == UndefinedHandleAddress;
}
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<myAISContext->InitCurrent();> (Handle_AIS_InteractiveContext.hxx)
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AIS_InteractiveContext* operator->() const
{
return (AIS_InteractiveContext *)ControlAccess();
}
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<return (AIS_InteractiveContext *)ControlAccess();> (Handle_Standard_Transient.hxx)
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Standard_Transient* ControlAccess() const
{
return entity;
}
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<return (bool)myAISContext->MoreCurrent();> (Handle_AIS_InteractiveContext.hxx)
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AIS_InteractiveContext* operator->() const
{
return (AIS_InteractiveContext *)ControlAccess();
}
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<return (AIS_InteractiveContext *)ControlAccess();> (Handle_Standard_Transient.hxx)
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//! Returns non-const pointer to referred object
Standard_Transient* ControlAccess() const
{
return entity;
}
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<if (curForm.DegenerateMode)> (Form2.cs)
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public bool DegenerateMode
{
get
{
return this.myDegenerateModeIsOn;
}
set
{
this.myDegenerateModeIsOn=value
}
}
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<if (curForm.Mode == IE.CurrentAction3d.CurAction3d_WindowZooming)> (Form2.cs)
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public CurrentAction3d Mode
{
get
{
return this.myCurrentMode;
}
set
{
this.myCurrentMode=value
}
}
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private void Form2_SizeChanged(object sender, System.EventArgs e)
{
myView.UpdateView();
}
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[분석결과 ]
STEPControl_Reader는 XSControl_Reader를 파생시켜 데이터를 분석하기 위한 클래스.
실제 파일을 읽는 작업은 XSControl_Reader의 메소드 ReadFile메소드에서 진행.
STEP은 기계관련 파일이므로 IFC파일을 읽어내야 했으나.
Opencascade에서는 IFCControl_Reader를 제공 하고 있지 않음.
[결론]
IFC파일을 읽어 내려면 XSControl_Reader를 상속받은 IFCControl_Reader를 만들어야 한다.
IFCControl_Reader는 IFC파일 데이터 분석 기능을 Opencascade가 그려내기에 적합한 데이터로 변환하는
기능을 제공 해야한다. (STEP파일 포멧과 IFC파일 포멧은 상당히 유사하다. 단, 스키마가 약간 다름)
출처: 원호형
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