www.pudn.com > geometrical transform.rar > geotrans.c
//////////////////////////////////////////////////////////////
//Name:geotrans.c
//Purpose: To perform geometric transform
//Author: phoenix, CS, TshingHua, Beijing, P.R.C.
//Email: bjlufengjun@www.163.net or lufengjun@hotmail.com
//Date:April 3, 1998
//header file
#include "bmp.h"
#include "memory.h"
#include "math.h"
//macro definition
#define WIDTHBYTES(i) ((i+31)/32*4)
#define PI 3.1415926535
#define RADIAN(angle) ((angle)*PI/180.0) //convert angle to radian
//function declaration
int PASCAL WinMain (HANDLE, HANDLE, LPSTR, int);
LRESULT CALLBACK MainWndProc(HWND , UINT,WPARAM, LPARAM);
BOOL LoadBmpFile (HWND hWnd,char *BmpFileName);
BOOL CALLBACK InputBox( HWND hDlg, UINT message,WPARAM wParam, LPARAM lParam );
BOOL Translation(HWND hWnd);
BOOL Rotation(HWND hWnd);
BOOL Mirror(HWND hWnd,BOOL XDirection);
BOOL Transpose(HWND hWnd);
BOOL Zoom(HWND hWnd);
//global variable declaration
BITMAPFILEHEADER bf;
BITMAPINFOHEADER bi;
HPALETTE hPalette=NULL;
HBITMAP hBitmap=NULL;
HGLOBAL hImgData=NULL;
DWORD NumColors;
DWORD LineBytes;
HWND hWnd;
HINSTANCE ghInst;
int xOffset=0,yOffset=0;
float RotateAngle=0.0f;
float ZoomRatio=0.25f;
DWORD ImgWidth=0 , ImgHeight=0;
///////////////////////////////////////////////////////////
int PASCAL WinMain (HANDLE hInstance, HANDLE hPrevInstance,
LPSTR lpszCmdLine, int nCmdShow)
{
MSG msg;
WNDCLASS wndclass;
ghInst=hInstance;
if ( ! hPrevInstance ){
wndclass.style = CS_HREDRAW | CS_VREDRAW;
wndclass.lpfnWndProc = MainWndProc;
wndclass.cbClsExtra = 0;
wndclass.cbWndExtra = 0;
wndclass.hInstance = hInstance;
wndclass.hIcon = LoadIcon (NULL, IDI_APPLICATION);
wndclass.hCursor = LoadCursor (NULL, IDC_ARROW);
wndclass.hbrBackground = GetStockObject (WHITE_BRUSH);
wndclass.lpszMenuName = "BMPMENU";
wndclass.lpszClassName = "phoenix ip system";
}
if ( ! RegisterClass (&wndclass) )
return FALSE;
hWnd = CreateWindow ("phoenix ip system","geometric transform",
WS_OVERLAPPEDWINDOW,CW_USEDEFAULT,CW_USEDEFAULT,
CW_USEDEFAULT, CW_USEDEFAULT, NULL,NULL,
hInstance, NULL);
if (!hWnd)
return FALSE;
ShowWindow (hWnd, SW_SHOWMAXIMIZED);
UpdateWindow (hWnd);
while ( GetMessage (&msg, NULL, 0, 0) ){
TranslateMessage (&msg);
DispatchMessage (&msg);
}
return msg.wParam;
}
////////////////////////////////////////////////////////////////
LRESULT CALLBACK MainWndProc(HWND hWnd, UINT message,WPARAM wParam, LPARAM lParam)
{
static HDC hDC,hMemDC;
PAINTSTRUCT ps;
switch (message){
case WM_PAINT:
{
hDC = BeginPaint(hWnd, &ps);
if (hBitmap)
{
hMemDC = CreateCompatibleDC(hDC);
if (hPalette)
{
SelectPalette (hDC, hPalette, FALSE);
SelectPalette (hMemDC, hPalette, FALSE);
RealizePalette (hDC);
}
SelectObject(hMemDC, hBitmap);
BitBlt(hDC, 0, 0, ImgWidth,ImgHeight, hMemDC, 0, 0, SRCCOPY);
DeleteDC(hMemDC);
}
EndPaint(hWnd, &ps);
break;
}
case WM_DESTROY: //注意释放内存和位图，调色板句柄
if(hBitmap!=NULL)
DeleteObject(hBitmap);
if(hPalette!=NULL)
DeleteObject(hPalette);
if(hImgData!=NULL){
GlobalUnlock(hImgData);
GlobalFree(hImgData);
}
PostQuitMessage (0);
return 0;
case WM_COMMAND:
switch (wParam){
case IDM_LOADBMP:
//注意重新分配内存和调色板，位图句柄时，先释放原来的
if(hBitmap!=NULL){
DeleteObject(hBitmap);
hBitmap=NULL;
}
if(hPalette!=NULL){
DeleteObject(hPalette);
hPalette=NULL;
}
if(hImgData!=NULL){
GlobalUnlock(hImgData);
GlobalFree(hImgData);
hImgData=NULL;
}
if(LoadBmpFile(hWnd,"c:\\test.bmp")) //成功，则重画窗口
InvalidateRect(hWnd,NULL,TRUE);
break;
case IDM_TRANSLATION:
if(hImgData!=NULL){
if(Translation(hWnd))
InvalidateRect(hWnd,NULL,TRUE);
}
else
MessageBox(hWnd,"File not loaded yet!","Error Message",MB_OK|MB_ICONEXCLAMATION);
break;
case IDM_ROTATION:
if(hImgData!=NULL){
if(Rotation(hWnd))
InvalidateRect(hWnd,NULL,TRUE);
}
else
MessageBox(hWnd,"File not loaded yet!","Error Message",MB_OK|MB_ICONEXCLAMATION);
break;
case IDM_MIRRORX:
if(hImgData!=NULL){
if(Mirror(hWnd,TRUE))
InvalidateRect(hWnd,NULL,TRUE);
}
else
MessageBox(hWnd,"File not loaded yet!","Error Message",MB_OK|MB_ICONEXCLAMATION);
break;
case IDM_MIRRORY:
if(hImgData!=NULL){
if(Mirror(hWnd,FALSE))
InvalidateRect(hWnd,NULL,TRUE);
}
else
MessageBox(hWnd,"File not loaded yet!","Error Message",MB_OK|MB_ICONEXCLAMATION);
break;
case IDM_TRANSPOSE:
if(hImgData!=NULL){
if(Transpose(hWnd))
InvalidateRect(hWnd,NULL,TRUE);
}
else
MessageBox(hWnd,"File not loaded yet!","Error Message",MB_OK|MB_ICONEXCLAMATION);
break;
case IDM_ZOOM:
if(hImgData!=NULL){
if(Zoom(hWnd))
InvalidateRect(hWnd,NULL,TRUE);
}
else
MessageBox(hWnd,"File not loaded yet!","Error Message",MB_OK|MB_ICONEXCLAMATION);
break;
case IDM_EXIT:
SendMessage(hWnd,WM_DESTROY,0,0L);
break;
}
break;
}
return DefWindowProc (hWnd, message, wParam, lParam);
}
////////////////////////////////////////////////////////////////
BOOL LoadBmpFile (HWND hWnd,char *BmpFileName)
{
HFILE hf;
LPBITMAPINFOHEADER lpImgData;
LOGPALETTE *pPal;
LPRGBQUAD lpRGB;
HPALETTE hPrevPalette;
HDC hDc;
HLOCAL hPal;
DWORD ImgSize;
DWORD i;
if((hf=_lopen(BmpFileName,OF_READ))==HFILE_ERROR){
MessageBox(hWnd,"File c:\\test.bmp not found!","Error Message",MB_OK|MB_ICONEXCLAMATION);
return FALSE;
}
_lread(hf,(LPSTR)&bf,sizeof(BITMAPFILEHEADER));
_lread(hf,(LPSTR)&bi,sizeof(BITMAPINFOHEADER));
ImgWidth=bi.biWidth;
ImgHeight=bi.biHeight;
LineBytes=(DWORD)WIDTHBYTES(bi.biWidth*bi.biBitCount);
ImgSize=(DWORD)LineBytes*bi.biHeight;
if(bi.biClrUsed!=0)
NumColors=(DWORD)bi.biClrUsed;
else
switch(bi.biBitCount){
case 1:
NumColors=2;
break;
case 4:
NumColors=16;
break;
case 8:
NumColors=256;
break;
case 24:
NumColors=0;
break;
default:
MessageBox(hWnd,"Invalid color numbers!","Error Message",MB_OK|MB_ICONEXCLAMATION);
_lclose(hf);
return FALSE;
}
if(bf.bfOffBits!=(DWORD)(NumColors*sizeof(RGBQUAD)+sizeof(BITMAPFILEHEADER)
+sizeof(BITMAPINFOHEADER)))
{
MessageBox(hWnd,"Invalid color numbers!","Error Message" ,MB_OK|
MB_ICONEXCLAMATION);
_lclose(hf);
return FALSE;
}
bf.bfSize=sizeof(BITMAPFILEHEADER)+sizeof(BITMAPINFOHEADER)+NumColors*sizeof(RGBQUAD)+ImgSize;
if((hImgData=GlobalAlloc(GHND,(DWORD)(sizeof(BITMAPINFOHEADER)+
NumColors*sizeof(RGBQUAD)+ImgSize)))==NULL)
{
MessageBox(hWnd,"Error alloc memory!","ErrorMessage",MB_OK|
MB_ICONEXCLAMATION);
_lclose(hf);
return FALSE;
}
lpImgData=(LPBITMAPINFOHEADER)GlobalLock(hImgData);
_llseek(hf,sizeof(BITMAPFILEHEADER),SEEK_SET);
_hread(hf,(char *)lpImgData,(long)sizeof(BITMAPINFOHEADER)
+(long)NumColors*sizeof(RGBQUAD)+ImgSize);
_lclose(hf);
if(NumColors!=0)
{
hPal=LocalAlloc(LHND,sizeof(LOGPALETTE) + NumColors* sizeof(PALETTEENTRY));
pPal =(LOGPALETTE *)LocalLock(hPal);
pPal->palNumEntries =(WORD) NumColors;
pPal->palVersion = 0x300;
lpRGB = (LPRGBQUAD)((LPSTR)lpImgData + (DWORD)sizeof(BITMAPINFOHEADER));
for (i = 0; i < NumColors; i++) {
pPal->palPalEntry[i].peRed=lpRGB->rgbRed;
pPal->palPalEntry[i].peGreen=lpRGB->rgbGreen;
pPal->palPalEntry[i].peBlue=lpRGB->rgbBlue;
pPal->palPalEntry[i].peFlags=(BYTE)0;
lpRGB++;
}
hPalette=CreatePalette(pPal);
LocalUnlock(hPal);
LocalFree(hPal);
}
hDc=GetDC(hWnd);
if(hPalette){
hPrevPalette=SelectPalette(hDc,hPalette,FALSE);
RealizePalette(hDc);
}
hBitmap=CreateDIBitmap(hDc, (LPBITMAPINFOHEADER)lpImgData, (LONG)CBM_INIT,
(LPSTR)lpImgData+sizeof(BITMAPINFOHEADER) +NumColors*sizeof(RGBQUAD),
(LPBITMAPINFO)lpImgData, DIB_RGB_COLORS);
if(hPalette && hPrevPalette){
SelectPalette(hDc,hPrevPalette,FALSE);
RealizePalette(hDc);
}
ReleaseDC(hWnd,hDc);
GlobalUnlock(hImgData);
return TRUE;
}
////////////////////////////////////////////////////////////////
BOOL CALLBACK InputBox( HWND hDlg, UINT message,WPARAM wParam, LPARAM lParam )
{
char str[80];
switch ( message ){
case WM_INITDIALOG:
SetDlgItemText(hDlg,ID_XOFFSET,"0");
SetDlgItemText(hDlg,ID_YOFFSET,"0");
SetDlgItemText(hDlg,ID_ANGLE,"0");
SetDlgItemText(hDlg,ID_ZOOMRATIO,"0.25");
return TRUE;
case WM_COMMAND:
if ( wParam == IDOK || wParam == IDCANCEL )
{
GetDlgItemText(hDlg,ID_XOFFSET,str,80);
xOffset=atoi(str);
GetDlgItemText(hDlg,ID_YOFFSET,str,80);
yOffset=atoi(str);
GetDlgItemText(hDlg,ID_ANGLE,str,80);
RotateAngle=(float)atof(str);
GetDlgItemText(hDlg,ID_ZOOMRATIO,str,80);
ZoomRatio=(float)atof(str);
EndDialog ( hDlg, TRUE );
return TRUE;
}
break;
}
return FALSE;
}
////////////////////////////////////////////////////////////////
BOOL Translation(HWND hWnd)
{
DLGPROC dlgInputBox = NULL;
DWORD OffBits,BufSize;
LPBITMAPINFOHEADER lpImgData;
LPSTR lpPtr;
HLOCAL hTempImgData;
LPBITMAPINFOHEADER lpTempImgData;
LPSTR lpTempPtr;
int SrcX0,SrcY0,SrcX1,SrcY1,DstX0,DstY0,DstX1,DstY1;
int RectWidth,RectHeight;
BOOL xVisible,yVisible;
HDC hDc;
HFILE hf;
int i;
dlgInputBox = (DLGPROC) MakeProcInstance ( (FARPROC)InputBox, ghInst );
DialogBox (ghInst, "INPUTBOX", hWnd, dlgInputBox);
FreeProcInstance ( (FARPROC) dlgInputBox );
OffBits=bf.bfOffBits-sizeof(BITMAPFILEHEADER);
BufSize=bf.bfSize-sizeof(BITMAPFILEHEADER);
if((hTempImgData=LocalAlloc(LHND,BufSize))==NULL)
{
MessageBox(hWnd,"Error alloc memory!","Error Message",MB_OK|MB_ICONEXCLAMATION);
return FALSE;
}
lpImgData=(LPBITMAPINFOHEADER)GlobalLock(hImgData);
lpTempImgData=(LPBITMAPINFOHEADER)LocalLock(hTempImgData);
lpPtr=(char *)lpImgData;
lpTempPtr=(char *)lpTempImgData;
memset(lpTempPtr,(BYTE)255,BufSize);
memcpy(lpTempPtr,lpPtr,OffBits);
xVisible=TRUE;
if( xOffset<= -bi.biWidth )
xVisible=FALSE;
else if( xOffset<=0){
DstX0=0;
DstX1=bi.biWidth+xOffset;
}
else if ( xOffset=0) && (x0=0) && (y0=0) && (x0=0) && (y0