// HeightToNormalDlg.cpp : implementation file
//

#include "stdafx.h"
#include "HeightToNormal.h"
#include "HeightToNormalDlg.h"
#include <imagelib\\image.h>
//#include <stuff\\stuff.hpp>

using namespace Stuff;


/////////////////////////////////////////////////////////////////////////////
// CAboutDlg dialog used for App About

class CAboutDlg : public CDialog
{
public:
	CAboutDlg();

// Dialog Data
	//{{AFX_DATA(CAboutDlg)
	enum { IDD = IDD_ABOUTBOX };
	//}}AFX_DATA

	// ClassWizard generated virtual function overrides
	//{{AFX_VIRTUAL(CAboutDlg)
	protected:
	virtual void DoDataExchange(CDataExchange* pDX);    // DDX/DDV support
	//}}AFX_VIRTUAL

// Implementation
protected:
	//{{AFX_MSG(CAboutDlg)
	//}}AFX_MSG
	DECLARE_MESSAGE_MAP()
};

CAboutDlg::CAboutDlg() : CDialog(CAboutDlg::IDD)
{
	//{{AFX_DATA_INIT(CAboutDlg)
	//}}AFX_DATA_INIT
}

void CAboutDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CAboutDlg)
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CAboutDlg, CDialog)
	//{{AFX_MSG_MAP(CAboutDlg)
		// No message handlers
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CHeightToNormalDlg dialog

CHeightToNormalDlg::CHeightToNormalDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CHeightToNormalDlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CHeightToNormalDlg)
		// NOTE: the ClassWizard will add member initialization here
	//}}AFX_DATA_INIT
	m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
}

void CHeightToNormalDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CHeightToNormalDlg)
		// NOTE: the ClassWizard will add DDX and DDV calls here
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CHeightToNormalDlg, CDialog)
	//{{AFX_MSG_MAP(CHeightToNormalDlg)
	ON_WM_SYSCOMMAND()
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CHeightToNormalDlg message handlers

BOOL CHeightToNormalDlg::OnInitDialog()
{
	CDialog::OnInitDialog();

	// Add "About..." menu item to system menu.

	// IDM_ABOUTBOX must be in the system command range.
	ASSERT((IDM_ABOUTBOX & 0xFFF0) == IDM_ABOUTBOX);
	ASSERT(IDM_ABOUTBOX < 0xF000);

	CMenu* pSysMenu = GetSystemMenu(FALSE);
	if (pSysMenu != NULL)
	{
		CString strAboutMenu;
		strAboutMenu.LoadString(IDS_ABOUTBOX);
		if (!strAboutMenu.IsEmpty())
		{
			pSysMenu->AppendMenu(MF_SEPARATOR);
			pSysMenu->AppendMenu(MF_STRING, IDM_ABOUTBOX, strAboutMenu);
		}
	}

	SetIcon(m_hIcon, TRUE);			// Set big icon
	SetIcon(m_hIcon, FALSE);		// Set small icon
	
	// TODO: Add extra initialization here
	Convert();
	return TRUE;  // return TRUE  unless you set the focus to a control
}

void CHeightToNormalDlg::OnSysCommand(UINT nID, LPARAM lParam)
{
	if ((nID & 0xFFF0) == IDM_ABOUTBOX)
	{
		CAboutDlg dlgAbout;
		dlgAbout.DoModal();
	}
	else
	{
		CDialog::OnSysCommand(nID, lParam);
	}
}

// If you add a minimize button to your dialog, you will need the code below
//  to draw the icon.  For MFC applications using the document/view model,
//  this is automatically done for you by the framework.

void CHeightToNormalDlg::OnPaint() 
{
	if (IsIconic())
	{
		CPaintDC dc(this); // device context for painting

		SendMessage(WM_ICONERASEBKGND, (WPARAM) dc.GetSafeHdc(), 0);

		// Center icon in client rectangle
		int cxIcon = GetSystemMetrics(SM_CXICON);
		int cyIcon = GetSystemMetrics(SM_CYICON);
		CRect rect;
		GetClientRect(&rect);
		int x = (rect.Width() - cxIcon + 1) / 2;
		int y = (rect.Height() - cyIcon + 1) / 2;

		// Draw the icon
		dc.DrawIcon(x, y, m_hIcon);
	}
	else
	{
		CDialog::OnPaint();
	}
}

HCURSOR CHeightToNormalDlg::OnQueryDragIcon()
{
	return (HCURSOR) m_hIcon;
}

void CHeightToNormalDlg::Convert()
{

Image img,fimg;

img.Load((char *)"c:\\temp\\bumptest.tga");
img.ReduceTo8Bit(RMD_MAX);
fimg.CreateBlank(img.GetWidth(),img.GetHeight(),ITYPE_RGB,24,RGBMask(0x0000ff,0x00ff00,0xff0000));

BYTE *sdat=img.Lock();
BYTE *ddat=fimg.Lock();

int x,y;
int ploc;
int pitch=img.GetPitch();
Vector3D v1,v2,norm;


for(y=0;y<img.GetHeight()-1;y++)
	for(x=0;x<img.GetWidth()-1;x++)
	{
	ploc=x+y*img.GetWidth();
	v1.x=-1.0f;
	v1.z=0.0f;
	v1.y=((float)sdat[(ploc+1)]-(float)sdat[ploc]);

	v2.x=0.0f;
	v2.z=-1.0f;
	v2.y=((float)sdat[ploc+pitch]-(float)sdat[ploc]);

	norm.Cross(v2,v1);
	norm.Normalize(norm);

	ddat[(x+y*fimg.GetWidth())*3+0]=(BYTE)(norm.x*127.0f) + 128;
	ddat[(x+y*fimg.GetWidth())*3+1]=(BYTE)(norm.z*127.0f) + 128;
	ddat[(x+y*fimg.GetWidth())*3+2]=(BYTE)(norm.y*127.0f) + 128;
	
	}


img.UnLock();
fimg.UnLock();

fimg.SaveTga("c:\\source\\mw4\\content\\textures\\spherenorm.tga");

}
