WxOGL

[edit] Sample code

[edit] Minimal wxOGL Application

This is a minimal application demonstrating wxOGL, contributed by LionKimbro

#include "wx/wx.h"
#include "wx/ogl/ogl.h"

class MyApp: public wxApp
{
    virtual bool OnInit();
};

class MyFrame: public wxFrame
{
    public:

    MyFrame(const wxString& title, const wxPoint& pos, const wxSize& size);

};

IMPLEMENT_APP(MyApp)


bool MyApp::OnInit()
{
    MyFrame *frame = new MyFrame( "wxWidgets - Object Graphics Library", wxPoint(50,50), wxSize(450,340) );
    frame->Show(TRUE);
    SetTopWindow(frame);
    return TRUE;
}


MyFrame::MyFrame(const wxString& title, const wxPoint& pos, const wxSize& size)
: wxFrame((wxFrame *)NULL, -1, title, pos, size)
{
    
	wxShapeCanvas *canvas = new wxShapeCanvas(this, wxID_ANY, pos, size, 0, wxT("a"));      
	
	canvas->SetBackgroundColour(*wxWHITE);
	canvas->SetCursor(wxCursor(wxCURSOR_CROSS));

	wxDiagram *diagram = new wxDiagram();	

	canvas->SetDiagram(diagram);

	wxCircleShape *shape = new wxCircleShape(20.0);
	shape->SetX(25.0);
	shape->SetY(25.0);
	canvas->AddShape(shape);

	diagram->ShowAll(1);	
}

The above code just create the wxShapeCanvas and graph a circle on it. Although that not so much that will help you get started.

[edit] Mouse event in circle

This example code, let you define some events in the shape, for example It has implemented the left ans right click.

#include "wx/wx.h"
#include "wx/ogl/ogl.h"

class MyApp: public wxApp
{
    virtual bool OnInit();
};

class OGLFrame: public wxFrame
{
    public:
    OGLFrame(const wxString& title, const wxPoint& pos, const wxSize& size);

};

class OGLCanvas: public wxShapeCanvas
{
	public:
	
	OGLCanvas(wxWindow *parent = NULL, wxWindowID id = wxID_ANY,const wxPoint& pos = wxDefaultPosition, const wxSize& size = wxDefaultSize,long style = wxRETAINED);

  	~OGLCanvas(void);

};

class MyEvtHandler: public wxShapeEvtHandler
{
	public:  
	MyEvtHandler(wxShapeEvtHandler *prev = NULL, wxShape *shape = NULL, 
		const wxString& lab = wxEmptyString):wxShapeEvtHandler(prev, shape)	{}

	~MyEvtHandler(void) {}

	void OnLeftClick(double x, double y, int keys = 0, int attachment = 0);
	void OnRightClick(double x, double y, int keys = 0, int attachment = 0);    
};

IMPLEMENT_APP(MyApp)


bool MyApp::OnInit()
{
    OGLFrame *frame = new OGLFrame( "wxOGL", wxPoint(50,50), wxSize(450,340) );
    frame->Show(TRUE);	
    SetTopWindow(frame);
    return TRUE;
}

OGLFrame::OGLFrame(const wxString& title, const wxPoint& pos, const wxSize& size)
: wxFrame((wxFrame *)NULL, -1, title, pos, size)
{
    OGLCanvas *canvas = new OGLCanvas(this);	
}

OGLCanvas::OGLCanvas(wxWindow *parent, wxWindowID id, const wxPoint& pos,
    const wxSize& size, long style):
 wxShapeCanvas(parent, id, pos, size, style)
{
	SetBackgroundColour(*wxWHITE);
	SetCursor(wxCursor(wxCURSOR_CROSS));
	wxDiagram *diagram = new wxDiagram();	
	SetDiagram(diagram);		

	wxCircleShape *circle = new wxCircleShape(100);	
	circle->SetX(200);
	circle->SetY(200);
	AddShape(circle);	
	diagram->ShowAll(1);

	MyEvtHandler *evthandler = new MyEvtHandler();
	evthandler->SetShape(circle);
	evthandler->SetPreviousHandler(circle->GetEventHandler());
	circle->SetEventHandler(evthandler);
}

OGLCanvas::~OGLCanvas(void)
{
}

void MyEvtHandler::OnLeftClick(double WXUNUSED(x), double WXUNUSED(y), int keys, int WXUNUSED(attachment))
{
	wxMessageBox(wxT("Left click"),
		wxT("wxOGL"), wxOK | wxICON_INFORMATION);
}

void MyEvtHandler::OnRightClick(double WXUNUSED(x), double WXUNUSED(y), int keys, int WXUNUSED(attachment))
{

	 wxMessageBox(wxT("Right click"),
		wxT("wxOGL"), wxOK | wxICON_INFORMATION);
}

[edit] Compiling sample code

Although this is a very basic thing, maybe some newbies like I was (or am?) need it.

 g++ ogl.cpp -o ogl `wx-config --libs` `wx-config --cxxflags` -lwx_gtk2_ogl-2.8