Mouse Selection in OpenGL Scene

// MouseSelDoc.cpp : implementation of the CMouseSelDoc class
//

#include "stdafx.h"
#include "MouseSel.h"

#include "MouseSelDoc.h"

#ifdef _DEBUG
#define new DEBUG_NEW
#endif


// CMouseSelDoc

IMPLEMENT_DYNCREATE(CMouseSelDoc, CDocument)

BEGIN_MESSAGE_MAP(CMouseSelDoc, CDocument)
END_MESSAGE_MAP()


// CMouseSelDoc construction/destruction

CMouseSelDoc::CMouseSelDoc()
{
	// TODO: add one-time construction code here

}

CMouseSelDoc::~CMouseSelDoc()
{
}

BOOL CMouseSelDoc::OnNewDocument()
{
	if (!CDocument::OnNewDocument())
		return FALSE;

		InitDoc();
		m_count=50;
		double x=-100;
		double y=0;
		double z=0;
		for( int i=1;i<=m_count; i++)
		{
			m_spheres = new CSphere(x,y,z,m_RedColor,m_GreenColor
									,m_BlueColor,m_dRadius);

			m_SphereList.AddTail(m_spheres);
			x=x+5;		
		}

	return TRUE;
}




// CMouseSelDoc serialization

void CMouseSelDoc::Serialize(CArchive& ar)
{
	if (ar.IsStoring())
	{
	ar<<m_SpeedTranslation;
	ar<<m_SpeedRotation;
	ar<<m_xRotation;
	ar<<m_yRotation;
	ar<<m_zRotation;
	ar<<m_xyRotation;
	ar<<m_xTranslation;
	ar<<m_yTranslation;
	ar<<m_zTranslation;
	}
	else
	{

	ar>>m_SpeedTranslation;
	ar>>m_SpeedRotation;
	ar>>m_xRotation;
	ar>>m_yRotation;
	ar>>m_zRotation;
	ar>> m_xyRotation;
	ar>>m_xTranslation;
	ar>>m_yTranslation;
	ar>>m_zTranslation;


	}
	m_SphereList.Serialize(ar);
}


// CMouseSelDoc diagnostics

#ifdef _DEBUG
void CMouseSelDoc::AssertValid() const
{
	CDocument::AssertValid();
}

void CMouseSelDoc::Dump(CDumpContext& dc) const
{
	CDocument::Dump(dc);
}
#endif //_DEBUG
void CMouseSelDoc::DeleteContents()
{
	while (!m_SphereList.IsEmpty())
	{
		delete m_SphereList.RemoveHead();
	}
	CDocument::DeleteContents();
}

BOOL CMouseSelDoc::OnOpenDocument(LPCTSTR lpszPathName)
{
	if (!CDocument::OnOpenDocument(lpszPathName))
		return FALSE;

	// TODO:  Add your specialized creation code here

	return TRUE;
}
void CMouseSelDoc::RenderScene()
{
	POSITION pos = m_SphereList.GetHeadPosition();
	while (pos != NULL)
	{
     m_spheres = m_SphereList.GetNext(pos);
	glGetIntegerv(GL_VIEWPORT, m_spheres->m_viewport);
    glGetDoublev(GL_MODELVIEW_MATRIX, m_spheres->m_modelMatrix);
    glGetDoublev(GL_PROJECTION_MATRIX, m_spheres->m_projMatrix);
	gluProject(m_spheres->m_xc,m_spheres->m_yc,m_spheres->m_zc,m_spheres->m_modelMatrix, 
				m_spheres->m_projMatrix,m_spheres->m_viewport,
				&m_spheres->m_winx,&m_y,&m_spheres->m_winz);
	m_spheres->m_winy=m_spheres->m_viewport[3] - (GLint) m_y - 1;
	m_spheres->Draw(); 

	}

}

void CMouseSelDoc::InitDoc()
{
	m_RedColor=0.0;
	m_GreenColor=0.0;
	m_BlueColor=1.0;
	m_dRadius=1.0;
	m_xRotation = 0.0f;
	m_yRotation = 0.0f;
	m_zRotation = 0.0f;

	m_xTranslation = 0.0f;
	m_yTranslation = 0.0f;
	m_zTranslation = -15.0f;

	m_SpeedRotation = 1.0f / 3.0f;
	m_SpeedTranslation = 1.0f / 50.0f;

	m_xyRotation = TRUE;

}