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C/C++ Source or Header | 1992-09-11 | 134KB | 2,969 lines

/* This OS/2 Presentation Manager program generates and prints mazes in three dimensions. It demonstrates device independent printing under OS/2 2.0. This program was written by James L. Dean. It was completed on August 31, 1992. Its help facility borrows heavily from the Sorting Algorithm Sample in the IBM Developer's Toolkit for OS/2 2.0. Its printing facility borrows heavily from the Print Sample in the IBM Developer's Toolkit for OS/2 and David E. Reich's "Programming Printing Under OS/2" in the Winter 1992 issue of IBM Personal Systems Developer. */ #include <stdio.h> #define INCL_WIN #define INCL_HELP #define INCL_GPI #define INCL_PM #define INCL_DOS #define INCL_SPLDOSPRINT #define INCL_ERRORS #include <os2.h> #include <stdlib.h> #include <malloc.h> #include <math.h> #include <string.h> #include <memory.h> #include "lpthex.h" #define RESOLUTION 4 #define NUM_COLORS 16 #define WIDTH_OF_ROOM 15 /* millimeters */ #define WM_PLOT_DONE WM_USER typedef struct { unsigned char red; unsigned char green; unsigned char blue; } rgb_rec; typedef struct stack_rec_record { char index_1; int index_2; } stack_rec; typedef struct { double x; double y; double z; } vertex_rec; MRESULT EXPENTRY about_lpthex(HWND,ULONG,MPARAM,MPARAM); static void adjust_perspective(volatile int,volatile int, volatile float * volatile,volatile float * volatile, volatile float * volatile,volatile double, volatile double,volatile double,volatile double, volatile double); MRESULT EXPENTRY client_window_proc(HWND,ULONG,MPARAM,MPARAM); static void destroy_maze(volatile float * volatile *, volatile float * volatile *, volatile float * volatile *,volatile int * volatile *, volatile int * volatile *, volatile unsigned char * volatile *, volatile stack_rec * volatile *); static ULONG display_msg(HWND,ULONG,ULONG,BOOL); static void draw_line_on_page(int,int,int,int); static void evaluate_and_transform(volatile double,volatile double, volatile double,volatile double,volatile int, volatile int,volatile double,volatile double, volatile float * volatile,volatile float * volatile, volatile float * volatile,volatile double *, volatile double *,volatile double *, volatile double *,volatile double *, volatile vertex_rec *,volatile int * volatile, volatile int * volatile); static double f(double,double); static void generate_maze(void); static void hash(int *,int *,int *,int *,int *,int *,int *,int *); static void increment(int *,int *,int *,int *,int *,int *,int *, int *); static void initialize_help(void); int main(void); static int memory_allocated(volatile long, volatile float * volatile *, volatile float * volatile *, volatile float * volatile *, volatile int * volatile *, volatile int * volatile *, volatile unsigned char * volatile *,volatile int, volatile stack_rec * volatile *); static void plot(volatile int,volatile int * volatile, volatile int,volatile int * volatile, volatile long,volatile float * volatile, volatile float * volatile,volatile double, volatile double,volatile double,volatile double, volatile unsigned char * volatile); MRESULT EXPENTRY printer_setup(HWND,ULONG,MPARAM,MPARAM); static void set_point_on_page(int,int); static void shade(volatile int,volatile int, volatile float * volatile,volatile float * volatile, volatile float * volatile, volatile unsigned char * volatile, volatile vertex_rec *); static void size_maze(void *); static void solve_maze(volatile stack_rec * volatile, volatile char * volatile * volatile,int *,int *, volatile int,volatile int); static void sort_back_to_front(volatile long, volatile float * volatile,volatile int * volatile, volatile int * volatile); static volatile double aspect_ratio = 0.0; static volatile char * volatile * volatile base_page = (volatile char * volatile * volatile) NULL; volatile PRQINFO3 * volatile best_queue_info_ptr = (volatile PRQINFO3 * volatile) NULL; static volatile unsigned char * volatile color = (volatile unsigned char * volatile) NULL; static volatile char * volatile default_queue_buffer = (volatile char * volatile) NULL; static volatile int delta_x [6] [720] ={{0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 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num_x_divisions = 0; static volatile int num_x_dots = 0; static volatile int num_y_divisions = 0; static volatile int num_y_dots = 0; static volatile char * volatile old_setup_queue_buffer = (volatile char * volatile) NULL; static volatile char * volatile * volatile page = (volatile char * volatile * volatile) NULL; volatile HWND plot_hwnd = (HWND) 0; static volatile int r_n [8] = {0,0,0,0,0,0,0,0}; static volatile int r_n_seed [7] = {0,0,0,0,0,0,0}; static volatile double rotation = 0.0; static volatile char * volatile setup_queue_buffer = (volatile char * volatile) NULL; volatile HEV size_maze_active = (HEV) 0; static volatile int size_maze_kill = 0; static volatile ULONG size_maze_post_count = (ULONG) 0; static volatile ULONG sizing = (ULONG) 0; static volatile stack_rec * volatile stack = (volatile stack_rec * volatile) NULL; static volatile double tilt = 0.0; static volatile char titillator [36] ={' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ', ' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' '}; static volatile CHAR window_title [HELP_LIB_NAME_LENGTH] = {' ',' ',' ',' ',' ',' ',' ',' ',' ',' ', ' ',' ',' ',' ',' ',' ',' ',' ',' ',' '}; static volatile int * volatile x_division_index = (volatile int * volatile) NULL; static volatile int x_dot_max = 0; static volatile double x_max = 0.0; static volatile double x_min = 0.0; static volatile float * volatile x_prime = (volatile float * volatile) NULL; static volatile double x_prime_max = 0.0; static volatile int * volatile y_division_index = (volatile int * volatile) NULL; static volatile int y_dot_max = 0; static volatile double y_max = 0.0; static volatile double y_min = 0.0; static volatile float * volatile y_prime = (volatile float * volatile) NULL; static volatile double y_prime_max = 0.0; static volatile double y_prime_min = 0.0; static volatile float * volatile z_prime = (volatile float * volatile) NULL; static volatile double z_prime_max = 0.0; static volatile double z_prime_min = 0.0; int main(void) { POINTL aptl [TXTBOX_COUNT] ={{0l,0l},{0l,0l},{0l,0l},{0l,0l},{0l,0l}}; ULONG ctldata = (ULONG) 0; HMQ hmq = (HMQ) 0; HPS hps = (HPS) 0; QMSG qmsg ={(HWND) 0,(ULONG) 0,(MPARAM) 0,(MPARAM) 0,(ULONG) 0,{0l,0l}}; static CHAR szClientClass [] = "3D Maze"; titillator[0]='\0'; display_titillator=FALSE; DosCreateEventSem((PSZ) NULL,(PHEV) &size_maze_active,(ULONG) 0,(BOOL32) 1); hAB=WinInitialize((ULONG) 0); hmq=WinCreateMsgQueue(hAB,0l); WinRegisterClass(hAB,(PSZ) szClientClass,(PFNWP) client_window_proc, (ULONG) CS_SIZEREDRAW,(ULONG) 0); ctldata=FCF_STANDARD; hwndFrame=WinCreateStdWindow((HWND) HWND_DESKTOP,(ULONG) WS_VISIBLE, &ctldata,(PSZ) szClientClass,(PSZ) NULL,(ULONG) 0,(HMODULE) NULL, (ULONG) ID_MAINMENU,(PHWND) &hwndClient); hps=WinGetPS(hwndFrame); GpiQueryTextBox(hps,18,"XXXXXXXXXXXXXXXXXX",TXTBOX_COUNT,aptl); WinReleasePS(hps); WinSetWindowPos(hwndFrame,(HWND) NULL,0l,0l, 20*(aptl[TXTBOX_BOTTOMRIGHT].x-aptl[TXTBOX_BOTTOMLEFT].x)/18, 5*(aptl[TXTBOX_TOPLEFT].y-aptl[TXTBOX_BOTTOMLEFT].y),SWP_SIZE); WinStartTimer(hAB,hwndClient,1,300); initialize_help(); while (WinGetMsg((HAB) hAB,(PQMSG) &qmsg,(HWND) NULL,(ULONG) 0,(ULONG) 0)) WinDispatchMsg((HAB) hAB,(PQMSG) &qmsg); if (hwndHelpInstance != 0) WinDestroyHelpInstance(hwndHelpInstance); WinStopTimer(hAB,hwndClient,1); WinDestroyWindow((HWND) hwndFrame); WinDestroyMsgQueue((HMQ) hmq); WinTerminate((HAB) hAB); return(0); } MRESULT EXPENTRY client_window_proc( HWND hwnd, ULONG msg, MPARAM mp1, MPARAM mp2) { DATETIME dateSeed ={(UCHAR) 0,(UCHAR) 0,(UCHAR) 0,(UCHAR) 0,(UCHAR) 0,(UCHAR) 0, (USHORT) 0,(SHORT) 0,(UCHAR) 0}; DEVOPENSTRUC dev_open_data ={(PSZ) NULL,(PSZ) NULL,(PDRIVDATA) NULL,(PSZ) NULL,(PSZ) NULL, (PSZ) NULL,(PSZ) NULL,(PSZ) NULL,(PSZ) NULL}; PHCINFO forms_info_ptr = (PHCINFO) NULL; LONG form_num = 0l; HPS hps = (HPS) 0; ULONG max_min_pixels = (ULONG) 0; ULONG min_pixels = (ULONG) 0; LONG num_forms = 0l; ULONG num_queue_items_available = (ULONG) 0; ULONG num_queue_items_returned = (ULONG) 0; ULONG queue_buffer_size = (ULONG) 0; ULONG queue_buffer_size_needed = (ULONG) 0; PPRQINFO3 queue_info_ptr = (PPRQINFO3) NULL; ULONG queue_item_num = (ULONG) 0; ULONG rc = (ULONG) 0; RECTL rcl = {0l,0l,0l,0l}; MRESULT result = (MRESULT) 0; switch (msg) { case HM_QUERY_KEYS_HELP: result=(MRESULT) HELP_KEYSHELP; break; case WM_COMMAND: switch (COMMANDMSG(&msg)->cmd) { case IDM_CANCEL: DosQueryEventSem((HEV) size_maze_active,(PULONG) &sizing); if (sizing == (ULONG) 0) { size_maze_kill=TRUE; DosWaitEventSem((HEV) size_maze_active, (ULONG) SEM_INDEFINITE_WAIT); } strcpy((unsigned char *) &titillator[0],"Cancelled!"); WinSendMsg(WinWindowFromID(WinQueryWindow(hwnd,QW_PARENT), FID_MENU),MM_SETITEMATTR,MPFROM2SHORT(IDM_SETUP,TRUE), MPFROM2SHORT(MIA_DISABLED,0)); WinSendMsg(WinWindowFromID(WinQueryWindow(hwnd,QW_PARENT), FID_MENU),MM_SETITEMATTR,MPFROM2SHORT(IDM_PRINT,TRUE), MPFROM2SHORT(MIA_DISABLED,0)); WinSendMsg(WinWindowFromID(WinQueryWindow(hwnd,QW_PARENT), FID_MENU),MM_SETITEMATTR,MPFROM2SHORT(IDM_CANCEL,TRUE), MPFROM2SHORT(MIA_DISABLED,MIA_DISABLED)); break; case IDM_GENERALHELP: if (help_enabled) if (WinSendMsg(hwndHelpInstance,HM_EXT_HELP,NULL,NULL)) display_msg(hwndClient,IDMSG_HELPDISPLAYERROR, ((ULONG) MB_OK)|((ULONG) MB_ERROR),FALSE); break; case IDM_HELPINDEX: if (help_enabled) if (WinSendMsg(hwndHelpInstance,HM_HELP_INDEX,NULL,NULL)) display_msg(hwndClient,IDMSG_HELPDISPLAYERROR, ((ULONG) MB_OK)|((ULONG) MB_ERROR),FALSE); break; case IDM_HELPPRODUCTINFO: WinDlgBox(HWND_DESKTOP,hwndClient,about_lpthex,(HMODULE) 0, IDD_PRODUCTINFO,NULL); break; case IDM_PRINT: WinSendMsg(WinWindowFromID(WinQueryWindow(hwnd,QW_PARENT), FID_MENU),MM_SETITEMATTR,MPFROM2SHORT(IDM_SETUP,TRUE), MPFROM2SHORT(MIA_DISABLED,MIA_DISABLED)); WinSendMsg(WinWindowFromID(WinQueryWindow(hwnd,QW_PARENT), FID_MENU),MM_SETITEMATTR,MPFROM2SHORT(IDM_PRINT,TRUE), MPFROM2SHORT(MIA_DISABLED,MIA_DISABLED)); habPrint=WinInitialize((ULONG) 0); dev_open_data.pszLogAddress =(*best_queue_info_ptr).pszName; dev_open_data.pszDriverName =(*best_queue_info_ptr).pszDriverName; dev_open_data.pszDriverName[ strcspn(dev_open_data.pszDriverName,".")]='\0'; dev_open_data.pdriv=(*best_queue_info_ptr).pDriverData; dev_open_data.pszDataType="PM_Q_STD"; dev_open_data.pszComment="LPTHEX"; dev_open_data.pszQueueProcName=NULL; dev_open_data.pszQueueProcParams="XFM=0"; dev_open_data.pszSpoolerParams=NULL; dev_open_data.pszNetworkParams=NULL; dev_context_handle=DevOpenDC(habPrint,OD_QUEUED,(PSZ) "*",9l, (PDEVOPENDATA) &dev_open_data,(HDC) NULL); num_forms=DevQueryHardcopyCaps(dev_context_handle,0l,0l, (PHCINFO) NULL); forms_info_ptr=(PHCINFO) malloc(((unsigned int) num_forms)*sizeof(HCINFO)); rc=(ULONG) DevQueryHardcopyCaps( dev_context_handle,0l,num_forms,forms_info_ptr); form_num=0; while ((form_num < num_forms) && ((((ULONG) forms_info_ptr[form_num].flAttributes) & ((ULONG) HCAPS_CURRENT)) != ((ULONG) HCAPS_CURRENT))) form_num++; iMaxX=forms_info_ptr[form_num].xPels; iMaxY=forms_info_ptr[form_num].yPels; num_columns =(int) (2*(forms_info_ptr[form_num].xRightClip -forms_info_ptr[form_num].xLeftClip)/(3*WIDTH_OF_ROOM)); num_columns=2*num_columns-1; num_rows=(int) ((2.0/sqrt(3.0)) *((double) (forms_info_ptr[form_num].yTopClip -forms_info_ptr[form_num].yBottomClip)) /((double) WIDTH_OF_ROOM)); aspect_ratio =(((double) (forms_info_ptr[form_num].yTopClip -forms_info_ptr[form_num].yBottomClip)) /((double) (forms_info_ptr[form_num].xRightClip -forms_info_ptr[form_num].xLeftClip))) /(((double) iMaxY)/((double) iMaxX)); free((void *) forms_info_ptr); plot_hwnd=hwnd; if ((num_columns >= 2) && (num_rows >= 2)) { DosGetDateTime(&dateSeed); r_n_seed[0]=dateSeed.year%10; r_n_seed[1]=dateSeed.month%10; r_n_seed[2]=dateSeed.day%10; r_n_seed[3]=dateSeed.hours%10; r_n_seed[4]=dateSeed.minutes%10; r_n_seed[5]=dateSeed.seconds%10; r_n_seed[6]=dateSeed.hundredths%10; DosResetEventSem((HEV) size_maze_active, (PULONG) &size_maze_post_count); size_maze_kill=FALSE; WinSendMsg(WinWindowFromID( WinQueryWindow(hwnd,QW_PARENT),FID_MENU), MM_SETITEMATTR,MPFROM2SHORT(IDM_CANCEL,TRUE), MPFROM2SHORT(MIA_DISABLED,0)); _beginthread(size_maze,(void *) NULL,16384,(void *) NULL); } else { DevCloseDC(dev_context_handle); WinTerminate((HAB) habPrint); DosEnterCritSec(); strcpy((unsigned char *) &titillator[0], "No suitable printer!"); DosExitCritSec(); } break; case IDM_SETUP: titillator[0]='\0'; WinDlgBox(HWND_DESKTOP,hwnd,printer_setup,(HMODULE) NULL, IDD_PRINTSETUP,(PVOID) NULL); break; case IDM_TUTORIAL: if (help_enabled) if (WinSendMsg(hwndHelpInstance,HM_KEYS_HELP,NULL,NULL)) display_msg(hwndClient,IDMSG_HELPDISPLAYERROR, ((ULONG) MB_OK)|((ULONG) MB_ERROR),FALSE); break; case IDM_USINGHELP: if (help_enabled) if (WinSendMsg(hwndHelpInstance,HM_DISPLAY_HELP,NULL, NULL)) display_msg(hwndClient,IDMSG_HELPDISPLAYERROR, ((ULONG) MB_OK)|((ULONG) MB_ERROR),FALSE); break; default: break; } break; case WM_CREATE: DosGetDateTime(&dateSeed); r_n_seed[0]=dateSeed.year%10; r_n_seed[1]=dateSeed.month%10; r_n_seed[2]=dateSeed.day%10; r_n_seed[3]=dateSeed.hours%10; r_n_seed[4]=dateSeed.minutes%10; r_n_seed[5]=dateSeed.seconds%10; r_n_seed[6]=dateSeed.hundredths%10; rotation=0.0; tilt=30.0; iMaxX=0; iMaxY=0; color=(volatile unsigned char * volatile) NULL; x_division_index=(volatile int * volatile) NULL; x_prime=(volatile float * volatile) NULL; y_division_index=(volatile int * volatile) NULL; y_prime=(volatile float * volatile) NULL; z_prime=(volatile float * volatile) NULL; base_page=(volatile char * volatile * volatile) NULL; page=(volatile char * volatile * volatile) NULL; stack=(volatile stack_rec * volatile) NULL; default_queue_buffer=(volatile char * volatile) NULL; setup_queue_buffer=(volatile char * volatile) NULL; queue_buffer_size=(ULONG) 0; best_queue_info_ptr=(volatile PRQINFO3 * volatile) NULL; num_queue_items_returned=0; num_queue_items_available=0; queue_buffer_size_needed=0; rc=SplEnumQueue((PSZ) NULL,(ULONG) 3,(PVOID) default_queue_buffer, (ULONG) queue_buffer_size,(PULONG) &num_queue_items_returned, (PULONG) &num_queue_items_available, (PULONG) &queue_buffer_size_needed,NULL); if ((rc == NO_ERROR) || (rc == ERROR_MORE_DATA)) { default_queue_buffer =(volatile char * volatile) malloc(queue_buffer_size_needed); queue_buffer_size=queue_buffer_size_needed; rc=SplEnumQueue((PSZ) NULL,(ULONG) 3, (PVOID) default_queue_buffer,(ULONG) queue_buffer_size, (PULONG) &num_queue_items_returned, (PULONG) &num_queue_items_available, (PULONG) &queue_buffer_size_needed,NULL); if (rc == NO_ERROR) { if (num_queue_items_returned > 0) { queue_info_ptr=(PPRQINFO3) default_queue_buffer; max_min_pixels=0; for (queue_item_num=1; queue_item_num <= num_queue_items_returned; queue_item_num++) { habPrint=WinInitialize((ULONG) 0); dev_open_data.pszLogAddress =(*queue_info_ptr).pszName; dev_open_data.pszDriverName =(*queue_info_ptr).pszDriverName; dev_open_data.pszDriverName[ strcspn(dev_open_data.pszDriverName,".")]='\0'; dev_open_data.pdriv=(*queue_info_ptr).pDriverData; dev_open_data.pszDataType="PM_Q_STD"; dev_open_data.pszComment="LPTHEX"; dev_open_data.pszQueueProcName=NULL; dev_open_data.pszQueueProcParams="XFM=0"; dev_open_data.pszSpoolerParams=NULL; dev_open_data.pszNetworkParams=NULL; dev_context_handle=DevOpenDC(habPrint,OD_QUEUED, (PSZ) "*",9l,(PDEVOPENDATA) &dev_open_data, (HDC) NULL); num_forms=DevQueryHardcopyCaps(dev_context_handle, 0l,0l,(PHCINFO) NULL); forms_info_ptr=(PHCINFO) malloc(((unsigned int) num_forms)*sizeof(HCINFO)); rc=(ULONG) DevQueryHardcopyCaps(dev_context_handle,0l, num_forms,forms_info_ptr); form_num=0; while ((form_num < num_forms) && ((((ULONG) forms_info_ptr[form_num].flAttributes) & ((ULONG) HCAPS_CURRENT)) != ((ULONG) HCAPS_CURRENT))) form_num++; min_pixels=min( ((ULONG) forms_info_ptr[form_num].xPels), ((ULONG) forms_info_ptr[form_num].yPels)); if (min_pixels > max_min_pixels) { max_min_pixels=min_pixels; best_queue_info_ptr=queue_info_ptr; } free((void *) forms_info_ptr); DevCloseDC(dev_context_handle); WinTerminate((HAB) habPrint); queue_info_ptr++; } } else { DevCloseDC(dev_context_handle); WinTerminate((HAB) habPrint); DosEnterCritSec(); strcpy((unsigned char *) &titillator[0], "No queues present!"); DosExitCritSec(); } } else { DevCloseDC(dev_context_handle); WinTerminate((HAB) habPrint); DosEnterCritSec(); strcpy((unsigned char *) &titillator[0], "Queues unavailable!"); DosExitCritSec(); } } else { DevCloseDC(dev_context_handle); WinTerminate((HAB) habPrint); DosEnterCritSec(); strcpy((unsigned char *) &titillator[0],"Queues unavailable!"); DosExitCritSec(); } break; case WM_DESTROY: DosQueryEventSem((HEV) size_maze_active,(PULONG) &sizing); if (sizing == (ULONG) 0) { size_maze_kill=TRUE; DosWaitEventSem((HEV) size_maze_active, (ULONG) SEM_INDEFINITE_WAIT); } destroy_maze(&x_prime,&y_prime,&z_prime,&x_division_index, &y_division_index,&color,&stack); if (setup_queue_buffer != (volatile char * volatile) NULL) free((void *) setup_queue_buffer); if (default_queue_buffer != (volatile char * volatile) NULL) free((void *) default_queue_buffer); break; case WM_PAINT: hps=WinBeginPaint(hwnd,(HPS) NULL,(PRECTL) NULL); GpiErase(hps); if (display_titillator) { WinQueryWindowRect(hwnd,&rcl); DosEnterCritSec(); WinDrawText(hps,-1,(unsigned char *) &titillator[0],&rcl, CLR_NEUTRAL,CLR_BACKGROUND,((ULONG) DT_CENTER)| ((ULONG) DT_VCENTER)|((ULONG) DT_ERASERECT)); DosExitCritSec(); } WinEndPaint(hps); break; case WM_PLOT_DONE: strcpy((unsigned char *) &titillator[0],"Done!"); WinSendMsg(WinWindowFromID(WinQueryWindow(hwnd,QW_PARENT), FID_MENU),MM_SETITEMATTR,MPFROM2SHORT(IDM_SETUP,TRUE), MPFROM2SHORT(MIA_DISABLED,0)); WinSendMsg(WinWindowFromID(WinQueryWindow(hwnd,QW_PARENT), FID_MENU),MM_SETITEMATTR,MPFROM2SHORT(IDM_PRINT,TRUE), MPFROM2SHORT(MIA_DISABLED,0)); WinSendMsg(WinWindowFromID(WinQueryWindow(hwnd,QW_PARENT), FID_MENU),MM_SETITEMATTR,MPFROM2SHORT(IDM_CANCEL,TRUE), MPFROM2SHORT(MIA_DISABLED,MIA_DISABLED)); break; case WM_TIMER: display_titillator=!display_titillator; WinInvalidateRect(hwnd,(PRECTL) NULL,(BOOL) NULL); break; default: result=(MRESULT) WinDefWindowProc(hwnd,msg,mp1,mp2); break; } return(result); } static void initialize_help() { HELPINIT hini = {(ULONG) 0,(ULONG) 0,(PSZ) NULL,(PHELPTABLE) NULL,(HMODULE) 0, (HMODULE) 0,(ULONG) 0,(ULONG) 0,(PSZ) NULL,(ULONG) 0,(PSZ) 0}; help_enabled=FALSE; hini.cb=sizeof(HELPINIT); hini.ulReturnCode=0; hini.pszTutorialName=(PSZ) NULL; hini.phtHelpTable=(PHELPTABLE) MAKELONG(LPTHEX_HELP_TABLE,0xFFFF); hini.hmodHelpTableModule=0; hini.hmodAccelActionBarModule=0; hini.idAccelTable=0; hini.idActionBar=0; if (! WinLoadString(hAB,0,IDS_HELPWINDOWTITLE,HELP_LIB_NAME_LENGTH, (PSZ) window_title)) display_msg(hwndClient,IDMSG_CANNOTLOADSTRING, ((ULONG) MB_OK)|((ULONG) MB_ERROR),FALSE); else { hini.pszHelpWindowTitle=(PSZ) window_title; hini.fShowPanelId=CMIC_HIDE_PANEL_ID; if (! WinLoadString(hAB,0,IDS_HELPLIBRARYNAME,HELP_LIB_NAME_LENGTH, (PSZ) lib_name)) display_msg(hwndClient,IDMSG_CANNOTLOADSTRING, ((ULONG) MB_OK)|((ULONG) MB_ERROR),FALSE); else { hini.pszHelpLibraryName=(PSZ) lib_name; hwndHelpInstance=WinCreateHelpInstance(hAB,&hini); if (hwndHelpInstance == 0 || hini.ulReturnCode) display_msg(hwndFrame,IDMSG_HELPLOADERROR, ((ULONG) MB_OK)|((ULONG) MB_ERROR),TRUE); else { if (! WinAssociateHelpInstance(hwndHelpInstance,hwndFrame)) display_msg(hwndFrame,IDMSG_HELPLOADERROR, ((ULONG) MB_OK)|((ULONG) MB_ERROR),TRUE); else help_enabled=TRUE; } } } return; } MRESULT EXPENTRY about_lpthex( HWND hwnd, ULONG msg, MPARAM mp1, MPARAM mp2) { HWND hwndMenu = (HWND) 0; MRESULT result = (MRESULT) 0; switch (msg) { case WM_INITDLG: hwndMenu=WinWindowFromID(hwnd,FID_SYSMENU); WinSendMsg(hwndMenu,MM_DELETEITEM,MPFROM2SHORT(SC_RESTORE,TRUE), MPFROMP(NULL)); WinSendMsg(hwndMenu,MM_DELETEITEM,MPFROM2SHORT(SC_SIZE,TRUE), MPFROMP(NULL)); WinSendMsg(hwndMenu,MM_DELETEITEM,MPFROM2SHORT(SC_MINIMIZE,TRUE), MPFROMP(NULL)); WinSendMsg(hwndMenu,MM_DELETEITEM,MPFROM2SHORT(SC_MAXIMIZE,TRUE), MPFROMP(NULL)); break; case WM_COMMAND: WinDismissDlg(hwnd,TRUE); break; default: result=WinDefDlgProc(hwnd,msg,mp1,mp2); break; } return(result); } static ULONG display_msg( HWND hwndOwner, ULONG msg_id, ULONG style, BOOL beep) { CHAR msg [MAX_MSG_LENGTH] = {' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ', ' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ', ' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' '}; ULONG result = (ULONG) 0; if (! WinLoadMessage(hAB,(HMODULE) NULL,msg_id,MAX_MSG_LENGTH,(PSZ) msg)) { WinAlarm(HWND_DESKTOP,WA_ERROR); result=(ULONG) 1; } else { if (beep) WinAlarm(HWND_DESKTOP,WA_ERROR); result=WinMessageBox(HWND_DESKTOP,hwndOwner,msg,(PSZ) NULL, IDD_MSGBOX,style); } return(result); } MRESULT EXPENTRY printer_setup( HWND hwnd, ULONG msg, MPARAM mp1, MPARAM mp2) { long driv_data_length = 0l; PDRIVDATA driv_data_ptr = (PDRIVDATA) NULL; char listbox_line [306] = {' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ', ' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ', ' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ', ' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ', ' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ', ' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ', ' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ', ' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ', ' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ', ' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ', ' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ', ' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ', ' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ', ' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ', ' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ', ' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ', ' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ', ' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ', ' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ', ' ',' '}; ULONG num_queue_items_available = (ULONG) 0; ULONG num_queue_items_returned = (ULONG) 0; /* PDRIVDATA old_driv_data_ptr = (PDRIVDATA) NULL; */ ULONG queue_buffer_size = (ULONG) 0; ULONG queue_buffer_size_needed = (ULONG) 0; PPRQINFO3 queue_info_ptr = (PPRQINFO3) NULL; ULONG queue_item_num = (ULONG) 0; ULONG rc = (ULONG) 0; MRESULT result = (MRESULT) 0; result=(MRESULT) 0; switch (msg) { case WM_INITDLG: WinSendDlgItemMsg(hwnd,IDD_PSLISTBOX,LM_DELETEALL,(MPARAM) NULL, (MPARAM) NULL); queue_buffer_size=(ULONG) 0; old_setup_queue_buffer=setup_queue_buffer; setup_queue_buffer=(volatile char * volatile) NULL; num_queue_items_returned=0; num_queue_items_available=0; queue_buffer_size_needed=0; rc=SplEnumQueue((PSZ) NULL,(ULONG) 3,(PVOID) setup_queue_buffer, (ULONG) queue_buffer_size,(PULONG) &num_queue_items_returned, (PULONG) &num_queue_items_available, (PULONG) &queue_buffer_size_needed,NULL); if ((rc == NO_ERROR) || (rc == ERROR_MORE_DATA)) { setup_queue_buffer=(volatile char * volatile) malloc(queue_buffer_size_needed); queue_buffer_size=queue_buffer_size_needed; rc=SplEnumQueue((PSZ) NULL,(ULONG) 3,(PVOID) setup_queue_buffer, (ULONG) queue_buffer_size,(PULONG) &num_queue_items_returned, (PULONG) &num_queue_items_available, (PULONG) &queue_buffer_size_needed,NULL); if (rc == NO_ERROR) { if (num_queue_items_returned > 0) { queue_info_ptr=(PPRQINFO3) setup_queue_buffer; for (queue_item_num=1; queue_item_num <= num_queue_items_returned; queue_item_num++) { (*queue_info_ptr).pszDriverName[ strcspn((*queue_info_ptr).pszDriverName,".")]='\0'; strcpy(&listbox_line[0],(*queue_info_ptr).pszName); strcat(&listbox_line[0],": "); strcat(&listbox_line[0], (*queue_info_ptr).pszComment); WinSendDlgItemMsg(hwnd,IDD_PSLISTBOX,LM_INSERTITEM, MPFROMSHORT(LIT_END),MPFROMP(&listbox_line[0])); if ((best_queue_info_ptr != (PPRQINFO3) NULL) && (strcmp((*queue_info_ptr).pszName, (*best_queue_info_ptr).pszName) == 0)) { WinSendDlgItemMsg(hwnd,IDD_PSLISTBOX, LM_SELECTITEM,MPFROMSHORT((queue_item_num-1)), MPFROMLONG(TRUE)); if (((*best_queue_info_ptr).pDriverData)->cb <= ((*queue_info_ptr).pDriverData)->cb) memcpy((PSZ) (*queue_info_ptr).pDriverData, (PSZ) (*best_queue_info_ptr).pDriverData, (unsigned int) (((*best_queue_info_ptr).pDriverData)->cb)); else { driv_data_ptr=(PDRIVDATA) malloc( (unsigned int) (((*best_queue_info_ptr).pDriverData)-> cb)); memcpy((PSZ) driv_data_ptr, (PSZ) (*best_queue_info_ptr).pDriverData, (unsigned int) (((*best_queue_info_ptr).pDriverData)-> cb)); /* old_driv_data_ptr =(*queue_info_ptr).pDriverData; */ (*queue_info_ptr).pDriverData=driv_data_ptr; /* There is some memory leakage here, but I hesitate to free((void *) old_driv_data_ptr) since I'm not always the one who allocated it and I don't want the overhead of keeping track of who did. */ } } queue_info_ptr++; } if (best_queue_info_ptr == (PPRQINFO3) NULL) WinSendDlgItemMsg(hwnd,IDD_PSLISTBOX,LM_SELECTITEM, MPFROMSHORT(0),MPFROMLONG(TRUE)); } else { free((void *) setup_queue_buffer); setup_queue_buffer=old_setup_queue_buffer; DosEnterCritSec(); strcpy((unsigned char *) &titillator[0], "No queues present!"); DosExitCritSec(); WinDismissDlg(hwnd,(ULONG) TRUE); } } else { free((void *) setup_queue_buffer); setup_queue_buffer=old_setup_queue_buffer; DosEnterCritSec(); strcpy((unsigned char *) &titillator[0], "Queues unavailable!"); DosExitCritSec(); WinDismissDlg(hwnd,(ULONG) TRUE); } } else { setup_queue_buffer=old_setup_queue_buffer; DosEnterCritSec(); strcpy((unsigned char *) &titillator[0],"Queues unavailable!"); DosExitCritSec(); WinDismissDlg(hwnd,(ULONG) TRUE); } break; case WM_COMMAND: switch (COMMANDMSG(&msg)->cmd) { case DID_OK: if (old_setup_queue_buffer != (volatile char * volatile) NULL) free((void *) old_setup_queue_buffer); best_queue_info_ptr=(PPRQINFO3) setup_queue_buffer; best_queue_info_ptr +=SHORT1FROMMP(WinSendDlgItemMsg(hwnd,IDD_PSLISTBOX, LM_QUERYSELECTION,MPFROMSHORT(LIT_FIRST),(MPARAM) NULL)); WinDismissDlg(hwnd,(ULONG) TRUE); break; case DID_CANCEL: free((void *) setup_queue_buffer); setup_queue_buffer=old_setup_queue_buffer; WinDismissDlg(hwnd,(ULONG) TRUE); break; case IDD_PSJOBPROP: best_queue_info_ptr=(PPRQINFO3) setup_queue_buffer; best_queue_info_ptr +=SHORT1FROMMP(WinSendDlgItemMsg(hwnd,IDD_PSLISTBOX, LM_QUERYSELECTION,MPFROMSHORT(LIT_FIRST),(MPARAM) NULL)); habPrint=WinInitialize((ULONG) 0); driv_data_length=DevPostDeviceModes(habPrint, (PDRIVDATA) NULL,(*best_queue_info_ptr).pszDriverName, ((*best_queue_info_ptr).pDriverData)->szDeviceName, (PSZ) NULL,(ULONG) DPDM_POSTJOBPROP); if (driv_data_length > 0) { if (driv_data_length > ((*best_queue_info_ptr).pDriverData)->cb) { driv_data_ptr=(PDRIVDATA) malloc((unsigned int) driv_data_length); memcpy((PSZ) driv_data_ptr, (PSZ) (*best_queue_info_ptr).pDriverData, (unsigned int) (((*best_queue_info_ptr).pDriverData)->cb)); /* old_driv_data_ptr=(*best_queue_info_ptr).pDriverData; */ (*best_queue_info_ptr).pDriverData=driv_data_ptr; /* There is some memory leakage here, but I hesitate to free((void *) old_driv_data_ptr) since I'm not always the one who allocated it and I don't want the overhead of keeping track of who did. */ } DevPostDeviceModes(habPrint, (*best_queue_info_ptr).pDriverData, (*best_queue_info_ptr).pszDriverName, ((*best_queue_info_ptr).pDriverData)->szDeviceName, (PSZ) NULL,(ULONG) DPDM_POSTJOBPROP); } else WinMessageBox(HWND_DESKTOP,hwnd, "Job properties cannot be modified.","LPTHEX", (USHORT) 0,((ULONG) MB_ICONHAND)|((ULONG) MB_OK)); WinTerminate((HAB) habPrint); break; default: break; } break; default: result=(MRESULT) WinDefDlgProc(hwnd,msg,mp1,mp2); } return(result); } static void size_maze( void *arg) { if (arg != (void *) NULL) /* suppress msg that arg is not referenced */ DosBeep((ULONG) 300,(ULONG) 300); destroy_maze(&x_prime,&y_prime,&z_prime,&x_division_index, &y_division_index,&color,&stack); max_x=8*(num_columns/2)+6; max_x_plus_1=max_x+1; num_x_dots=RESOLUTION*max_x_plus_1; x_dot_max=num_x_dots-1; max_y=4*num_rows; max_y_plus_1=max_y+1; num_y_dots=RESOLUTION*max_y_plus_1; y_dot_max=num_y_dots-1; num_rooms_in_maze=num_rows*num_columns-(num_columns/2); num_x_divisions=num_y_dots+2; num_y_divisions=num_x_dots+2; num_primes=(long) num_x_divisions; num_primes*=((long) num_y_divisions); if (! size_maze_kill) { if (memory_allocated(num_primes,&x_prime,&y_prime, &z_prime,&x_division_index,&y_division_index,&color, num_rooms_in_maze,&stack)) { if (! size_maze_kill) generate_maze(); x_min=1.0; x_max=(double) num_x_divisions; y_min=1.0; y_max=(double) num_y_divisions; light.x=1.5; light.y=-1.0; light.z=2.6; if (! size_maze_kill) evaluate_and_transform(x_min,x_max,y_min,y_max,num_x_divisions, num_y_divisions,rotation,tilt,x_prime,y_prime,z_prime, &x_prime_max,&y_prime_min,&y_prime_max,&z_prime_min, &z_prime_max,&light,x_division_index,y_division_index); if (! size_maze_kill) shade(num_x_divisions,num_y_divisions,x_prime,y_prime,z_prime, color,&light); if (! size_maze_kill) adjust_perspective(num_x_divisions,num_y_divisions,x_prime, y_prime,z_prime,x_prime_max,y_prime_min,y_prime_max, z_prime_min,z_prime_max); if (! size_maze_kill) sort_back_to_front(num_primes,x_prime,x_division_index, y_division_index); if (! size_maze_kill) plot(num_x_divisions,x_division_index,num_y_divisions, y_division_index,num_primes,y_prime,z_prime,y_prime_min, y_prime_max,z_prime_min,z_prime_max,color); } else { DosEnterCritSec(); strcpy((unsigned char *) &titillator[0],"Not enough memory!"); DosExitCritSec(); } } DosEnterCritSec(); DosPostEventSem((HEV) size_maze_active); _endthread(); } static int memory_allocated( volatile long num_primes, volatile float * volatile *x_prime, volatile float * volatile *y_prime, volatile float * volatile *z_prime, volatile int * volatile *x_division_index, volatile int * volatile *y_division_index, volatile unsigned char * volatile *color, volatile int num_rooms_in_maze, volatile stack_rec * volatile *stack) { int result = 0; register int y = 0; result=((base_page=(volatile char * volatile * volatile) malloc(((unsigned int) max_y_plus_1)*sizeof(volatile char * volatile))) != NULL); if (result) { for (y=0; ((result) && (y < max_y_plus_1)); y++) result=((base_page[y]=(volatile char * volatile) malloc(((unsigned int) max_x_plus_1)*sizeof(volatile char))) != NULL); if (! result) { --y; while (y > 0) free((void *) base_page[--y]); free((void *) base_page); base_page=(volatile char * volatile * volatile) NULL; } } if (result) { result=((page=(volatile char * volatile * volatile) malloc(((unsigned int) num_y_dots)*sizeof(volatile char * volatile))) != NULL); if (result) { for (y=0; ((result) && (y < num_y_dots)); y++) result=((page[y]=(volatile char * volatile) malloc(((unsigned int) num_x_dots)*sizeof(volatile char))) != NULL); if (! result) { --y; while (y > 0) free((void *) page[--y]); free((void *) page); page=(volatile char * volatile * volatile) NULL; for (y=0; y < max_y_plus_1; y++) free((void *) base_page[y]); free((void *) base_page); base_page=(volatile char * volatile * volatile) NULL; } } else { for (y=0; y < max_y_plus_1; y++) free((void *) base_page[y]); free((void *) base_page); base_page=(volatile char * volatile * volatile) NULL; } } if (result) { if (! (result=((*x_prime=(volatile float * volatile) malloc(((unsigned int) num_primes)*sizeof(volatile float))) != NULL))) { for (y=0; y < max_y_plus_1; y++) free((void *) base_page[y]); free((void *) base_page); base_page=(volatile char * volatile * volatile) NULL; } } if (result) { if (! (result=((*y_prime=(volatile float * volatile) malloc(((unsigned int) num_primes)*sizeof(volatile float))) != NULL))) { free((void *) *x_prime); *x_prime=(volatile float * volatile) NULL; for (y=0; y < num_y_dots; y++) free((void *) page[y]); free((void *) page); page=(volatile char * volatile * volatile) NULL; for (y=0; y < max_y_plus_1; y++) free((void *) base_page[y]); free((void *) base_page); base_page=(volatile char * volatile * volatile) NULL; } } if (result) { if (! (result=((*z_prime=(volatile float * volatile) malloc(((unsigned int) num_primes)*sizeof(volatile float))) != NULL))) { free((void *) *y_prime); *y_prime=(volatile float * volatile) NULL; free((void *) *x_prime); *x_prime=(volatile float * volatile) NULL; for (y=0; y < num_y_dots; y++) free((void *) page[y]); free((void *) page); page=(volatile char * volatile * volatile) NULL; for (y=0; y < max_y_plus_1; y++) free((void *) base_page[y]); free((void *) base_page); base_page=(volatile char * volatile * volatile) NULL; } } if (result) { if (! (result=((*x_division_index=(volatile int * volatile) malloc(((unsigned int) num_primes)*sizeof(volatile int))) != NULL))) { free((void *) *z_prime); *z_prime=(volatile float * volatile) NULL; free((void *) *y_prime); *y_prime=(volatile float * volatile) NULL; free((void *) *x_prime); *x_prime=(volatile float * volatile) NULL; for (y=0; y < num_y_dots; y++) free((void *) page[y]); free((void *) page); page=(volatile char * volatile * volatile) NULL; for (y=0; y < max_y_plus_1; y++) free((void *) base_page[y]); free((void *) base_page); base_page=(volatile char * volatile * volatile) NULL; } } if (result) { if (! (result=((*y_division_index=(volatile int * volatile) malloc(((unsigned int) num_primes)*sizeof(volatile int))) != NULL))) { free((void *) *x_division_index); *x_division_index=(volatile int * volatile) NULL; free((void *) *z_prime); *z_prime=(volatile float * volatile) NULL; free((void *) *y_prime); *y_prime=(volatile float * volatile) NULL; free((void *) *x_prime); *x_prime=(volatile float * volatile) NULL; for (y=0; y < num_y_dots; y++) free((void *) page[y]); free((void *) page); page=(volatile char * volatile * volatile) NULL; for (y=0; y < max_y_plus_1; y++) free((void *) base_page[y]); free((void *) base_page); base_page=(volatile char * volatile * volatile) NULL; } } if (result) { if (! (result=((*color=(volatile unsigned char * volatile) malloc(((unsigned int) num_primes)*sizeof(volatile unsigned char))) != NULL))) { free((void *) *y_division_index); *y_division_index=(volatile int * volatile) NULL; free((void *) *x_division_index); *x_division_index=(volatile int * volatile) NULL; free((void *) *z_prime); *z_prime=(volatile float * volatile) NULL; free((void *) *y_prime); *y_prime=(volatile float * volatile) NULL; free((void *) *x_prime); *x_prime=(volatile float * volatile) NULL; for (y=0; y < num_y_dots; y++) free((void *) page[y]); free((void *) page); page=(volatile char * volatile * volatile) NULL; for (y=0; y < max_y_plus_1; y++) free((void *) base_page[y]); free((void *) base_page); base_page=(volatile char * volatile * volatile) NULL; } } if (result) { if (! (result=((*stack=(volatile stack_rec * volatile) malloc( ((unsigned int) num_rooms_in_maze)*sizeof(volatile stack_rec))) != NULL))) { free((void *) *color); *color=(volatile unsigned char * volatile) NULL; free((void *) *y_division_index); *y_division_index=(volatile int * volatile) NULL; free((void *) *x_division_index); *x_division_index=(volatile int * volatile) NULL; free((void *) *z_prime); *z_prime=(volatile float * volatile) NULL; free((void *) *y_prime); *y_prime=(volatile float * volatile) NULL; free((void *) *x_prime); *x_prime=(volatile float * volatile) NULL; for (y=0; y < num_y_dots; y++) free((void *) page[y]); free((void *) page); page=(volatile char * volatile * volatile) NULL; for (y=0; y < max_y_plus_1; y++) free((void *) base_page[y]); free((void *) base_page); base_page=(volatile char * volatile * volatile) NULL; } } return(result); } static void set_point_on_page( int x, int y) { int x_offset = 0; int x_out = 0; int y_offset = 0; int y_out = 0; for (x_offset = 0; x_offset < RESOLUTION; x_offset++) { x_out=x+x_offset; for (y_offset=0; y_offset < RESOLUTION; y_offset++) { y_out=y+y_offset; page[y_out][x_out]='W'; } } return; } static void draw_line_on_page( int x1, int y1, int x2, int y2) { int error = 0; int error_prime_x = 0; int error_prime_y = 0; int permissible_delta_x = 0; int permissible_delta_y = 0; int x = 0; int x_diff = 0; int y = 0; int y_diff = 0; if (x2 >= x1) permissible_delta_x=1; else permissible_delta_x=-1; if (y2 >= y1) permissible_delta_y=1; else permissible_delta_y=-1; x=x1; y=y1; x_diff=x2-x1; y_diff=y2-y1; set_point_on_page(x,y); while ((x != x2) || (y != y2)) { error_prime_x=error+permissible_delta_x*y_diff; error_prime_y=error-permissible_delta_y*x_diff; if (abs(error_prime_x) <= abs(error_prime_y)) { x+=permissible_delta_x; error=error_prime_x; } else { y+=permissible_delta_y; error=error_prime_y; } set_point_on_page(x,y); } return; } static void solve_maze( volatile stack_rec * volatile stack, volatile char * volatile * volatile base_page, int * num_rooms_in_solution, int * adjacency, volatile int max_x, volatile int max_y) { int delta_index=0; int passage_found=0; int stack_head=-1; int x=3; int x_next=0; int y=2; int y_next=0; *num_rooms_in_solution=1; *adjacency=0; x=3; y=2; stack_head=-1; base_page[y][x]='S'; do { delta_index=0; passage_found=FALSE; do { while ((delta_index < 6) && (! passage_found)) { x_next=x+delta_x[delta_index][0]; y_next=y+delta_y[delta_index][0]; if (base_page[y_next][x_next] == ' ') passage_found=TRUE; else delta_index++; } if (! passage_found) { delta_index=(int) (stack[stack_head].index_1); base_page[y][x]=' '; x-=delta_x[delta_index][0]; y-=delta_y[delta_index][0]; base_page[y][x]=' '; x-=delta_x[delta_index][0]; y-=delta_y[delta_index][0]; stack_head--; delta_index++; } } while (! passage_found); base_page[y_next][x_next]='S'; x_next+=delta_x[delta_index][0]; y_next+=delta_y[delta_index][0]; if (y_next <= max_y) { stack_head++; stack[stack_head].index_1=(char) delta_index; base_page[y_next][x_next]='S'; x=x_next; y=y_next; } } while (y_next < max_y); x=max_x-3; y=max_y-2; *adjacency=0; while (stack_head >= 0) { for (delta_index=0; delta_index < 6; delta_index++) { x_next=x+delta_x[delta_index][0]; y_next=y+delta_y[delta_index][0]; if (base_page[y_next][x_next] != 'S') { if (base_page[y_next][x_next] == 'W') { x_next+=delta_x[delta_index][0]; y_next+=delta_y[delta_index][0]; if (x_next < 0) (*adjacency)++; else if (x_next > max_x) (*adjacency)++; else if (y_next < 0) (*adjacency)++; else if (y_next > max_y) (*adjacency)++; else { if (base_page[y_next][x_next] == 'S') (*adjacency)++; } } } } x-=(2*delta_x[stack[stack_head].index_1][0]); y-=(2*delta_y[stack[stack_head].index_1][0]); stack_head--; (*num_rooms_in_solution)++; } for (delta_index=0; delta_index < 6; delta_index++) { x_next=x+delta_x[delta_index][0]; y_next=y+delta_y[delta_index][0]; if (base_page[y_next][x_next] != ' ') { if (base_page[y_next][x_next] == 'W') { x_next+=delta_x[delta_index][0]; y_next+=delta_y[delta_index][0]; if (x_next < 0) (*adjacency)++; else if (x_next > max_x) (*adjacency)++; else if (y_next < 0) (*adjacency)++; else if (y_next > max_y) (*adjacency)++; else { if (base_page[y_next][x_next] == 'S') (*adjacency)++; } } } } return; } static void generate_maze() { int adjacency = 0; int column_num = 0; int counter_0 = 0; int counter_1 = 0; int counter_2 = 0; int counter_3 = 0; int counter_4 = 0; int counter_5 = 0; int counter_6 = 0; int counter_7 = 0; int delta_index_1a = 0; int delta_index_1b = 0; int delta_index_1c = 0; int delta_index_1d = 0; int delta_index_1e = 0; int delta_index_1f = 0; int delta_index_2 = 0; int num_rooms_in_solution = 0; int passage_found = 0; register int r_n_index_1 = 0; register int r_n_index_2 = 0; int row_num = 0; int search_complete = 0; int stack_head = 0; int tem_int = 0; int x = 0; int x_mod_8 = 0; int x_next = 0; int y = 0; int y_mod_4 = 0; int y_next = 0; int y_previous = 0; DosEnterCritSec(); strcpy((unsigned char *) &titillator[0],"Generating..."); DosExitCritSec(); r_n[0]=r_n_seed[0]; r_n[1]=r_n_seed[1]; r_n[2]=r_n_seed[2]; r_n[3]=r_n_seed[3]; r_n[4]=r_n_seed[4]; r_n[5]=r_n_seed[5]; r_n[6]=r_n_seed[6]; r_n[7]=0; counter_0=r_n[0]; counter_1=r_n[1]; counter_2=r_n[2]; counter_3=r_n[3]; counter_4=r_n[4]; counter_5=r_n[5]; counter_6=r_n[6]; counter_7=r_n[7]; hash(&counter_0,&counter_1,&counter_2,&counter_3,&counter_4,&counter_5, &counter_6,&counter_7); delta_y[0][0]=-1; delta_x[0][0]=-2; delta_y[1][0]=1; delta_x[1][0]=-2; delta_y[2][0]=-2; delta_x[2][0]=0; delta_y[3][0]=2; delta_x[3][0]=0; delta_y[4][0]=-1; delta_x[4][0]=2; delta_y[5][0]=1; delta_x[5][0]=2; delta_index_2=0; for (delta_index_1a=0; delta_index_1a < 6; delta_index_1a++) for (delta_index_1b=0; delta_index_1b < 6; delta_index_1b++) if (delta_index_1a != delta_index_1b) for (delta_index_1c=0; delta_index_1c < 6; delta_index_1c++) if ((delta_index_1a != delta_index_1c) && (delta_index_1b != delta_index_1c)) for (delta_index_1d=0; delta_index_1d < 6; delta_index_1d++) if ((delta_index_1a != delta_index_1d) && (delta_index_1b != delta_index_1d) && (delta_index_1c != delta_index_1d)) for (delta_index_1e=0; delta_index_1e < 6; delta_index_1e++) if ((delta_index_1a != delta_index_1e) && (delta_index_1b != delta_index_1e) && (delta_index_1c != delta_index_1e) && (delta_index_1d != delta_index_1e)) for (delta_index_1f=0; delta_index_1f < 6; delta_index_1f++) if ((delta_index_1a != delta_index_1f) && (delta_index_1b != delta_index_1f) && (delta_index_1c != delta_index_1f) && (delta_index_1d != delta_index_1f) && (delta_index_1e != delta_index_1f)) { delta_x[delta_index_1a][delta_index_2] =delta_x[0][0]; delta_y[delta_index_1a][delta_index_2] =delta_y[0][0]; delta_x[delta_index_1b][delta_index_2] =delta_x[1][0]; delta_y[delta_index_1b][delta_index_2] =delta_y[1][0]; delta_x[delta_index_1c][delta_index_2] =delta_x[2][0]; delta_y[delta_index_1c][delta_index_2] =delta_y[2][0]; delta_x[delta_index_1d][delta_index_2] =delta_x[3][0]; delta_y[delta_index_1d][delta_index_2] =delta_y[3][0]; delta_x[delta_index_1e][delta_index_2] =delta_x[4][0]; delta_y[delta_index_1e][delta_index_2] =delta_y[4][0]; delta_x[delta_index_1f][delta_index_2] =delta_x[5][0]; delta_y[delta_index_1f][delta_index_2] =delta_y[5][0]; delta_index_2++; }; do { y_mod_4=1; for (y=0; y <= max_y; y++) { if (y_mod_4 == 1) { x_mod_8=1; for (x=0; x <= max_x; x++) { if (((x_mod_8 == 0) && (y != 0) && (y != max_y)) || (x_mod_8 == 3) || (x_mod_8 == 4) || (x_mod_8 == 5)) base_page[y][x]='W'; else base_page[y][x]=' '; x_mod_8++; if (x_mod_8 >= 8) x_mod_8=0; } } else { if (y_mod_4 == 0 || y_mod_4 == 2) { x_mod_8=1; for (x=0; x <= max_x; x++) { if ((x_mod_8 == 2) || (x_mod_8 == 6)) base_page[y][x]='W'; else base_page[y][x]=' '; x_mod_8++; if (x_mod_8 >= 8) x_mod_8 = 0; } } else { x_mod_8=1; for (x=0; x <= max_x; x++) { if ((x_mod_8 == 0) || (x_mod_8 == 1) || (x_mod_8 == 4) || (x_mod_8 == 7)) base_page[y][x]='W'; else base_page[y][x]=' '; x_mod_8++; if (x_mod_8 >= 8) x_mod_8=0; } } } y_mod_4++; if (y_mod_4 >= 4) y_mod_4=0; } r_n[0]=counter_0+1; r_n[1]=counter_1+1; r_n[2]=counter_2+1; r_n[3]=counter_3+1; r_n[4]=counter_4+1; r_n[5]=counter_5+1; r_n[6]=counter_6+1; r_n[7]=counter_7+1; column_num=r_n[0]; r_n_index_1=0; r_n_index_2=1; while (r_n_index_2 < 8) { tem_int=r_n[r_n_index_2]; r_n[r_n_index_1]=tem_int; column_num+=tem_int; if (column_num >= 727) column_num-=727; r_n_index_1=r_n_index_2; r_n_index_2++; } r_n[7]=column_num; column_num%=num_columns; x=4*column_num+3; row_num=r_n[0]; r_n_index_1=0; r_n_index_2=1; while (r_n_index_2 < 8) { tem_int=r_n[r_n_index_2]; r_n[r_n_index_1]=tem_int; row_num+=tem_int; if (row_num >= 727) row_num-=727; r_n_index_1=r_n_index_2; r_n_index_2++; } r_n[7]=row_num; if (column_num%2) { row_num%=(num_rows-1); y=4*row_num+4; } else { row_num%=num_rows; y=4*row_num+2; } base_page[y][x]=' '; stack_head=-1; do { delta_index_1a=0; do { delta_index_2=r_n[0]; r_n_index_1=0; r_n_index_2=1; while (r_n_index_2 < 8) { tem_int=r_n[r_n_index_2]; r_n[r_n_index_1]=tem_int; delta_index_2+=tem_int; if (delta_index_2 >= 727) delta_index_2-=727; r_n_index_1=r_n_index_2; r_n_index_2++; } r_n[7]=delta_index_2; } while (delta_index_2 >= 720); passage_found=FALSE; search_complete=FALSE; while (! search_complete) { while ((delta_index_1a < 6) && (! passage_found)) { x_next=x+2*delta_x[delta_index_1a][delta_index_2]; if (x_next <= 0) delta_index_1a++; else if (x_next > max_x) delta_index_1a++; else { y_next=y+2*delta_y[delta_index_1a][delta_index_2]; if (y_next <= 0) delta_index_1a++; else if (y_next > max_y) delta_index_1a++; else if (base_page[y_next][x_next] == 'W') passage_found=TRUE; else delta_index_1a++; } } if (! passage_found) { if (stack_head >= 0) { delta_index_1a=(int) (stack[stack_head].index_1); delta_index_2=stack[stack_head].index_2; x-=2*delta_x[delta_index_1a][delta_index_2]; y-=2*delta_y[delta_index_1a][delta_index_2]; stack_head--; delta_index_1a++; } } search_complete=((passage_found) || ((stack_head == -1) && (delta_index_1a >= 6))); } if (passage_found) { stack_head++; stack[stack_head].index_1=(char) delta_index_1a; stack[stack_head].index_2=delta_index_2; base_page[y_next][x_next]=' '; base_page[(y+y_next)/2][(x+x_next)/2]=' '; x=x_next; y=y_next; } } while (stack_head != -1); base_page[0][3]='S'; base_page[max_y][max_x-3]=' '; solve_maze(stack,base_page,&num_rooms_in_solution,&adjacency,max_x, max_y); increment(&counter_0,&counter_1,&counter_2,&counter_3,&counter_4, &counter_5,&counter_6,&counter_7); } while ((! size_maze_kill) && ((3*num_rooms_in_solution < num_rooms_in_maze) || (2*adjacency > 3*num_rooms_in_solution))); for (x = 0; x <= x_dot_max; x++) for (y = 0; y <= y_dot_max; y++) page[y][x]=' '; y_previous=-1; y_next=1; for (y = 0; y <= max_y; y++) { x=0; for (x_next = 1; x_next <= max_x; x_next++) { if (base_page[y][x] == 'W') { if (base_page[y][x_next] == 'W') draw_line_on_page(RESOLUTION*x,RESOLUTION*y, RESOLUTION*x_next,RESOLUTION*y); if (y_previous >= 0) { if (base_page[y_previous][x_next] == 'W') draw_line_on_page(RESOLUTION*x,RESOLUTION*y, RESOLUTION*x_next,RESOLUTION*y_previous); } if (y_next <= max_y) { if (base_page[y_next][x_next] == 'W') draw_line_on_page(RESOLUTION*x,RESOLUTION*y, RESOLUTION*x_next,RESOLUTION*y_next); } } x=x_next; } y_previous=y; y_next++; } return; } static int substitution_high [100] = { 4,1,2,8,8,9,9,6,5,7,2,1,2,9,8,8,6,3,5,1,9,5,4,4,9,8,6,0,8,0, 6,0,2,4,1,9,2,0,7,4,7,3,0,0,2,6,8,9,4,0,8,3,2,3,2,5,2,4,6,9, 7,9,1,3,5,7,1,1,4,5,8,1,6,0,5,7,8,2,3,3,7,3,5,1,7,5,4,0,3,6, 3,7,7,1,9,4,0,5,6,6 }; static int substitution_low [100] = { 1,2,2,1,5,5,4,6,4,6,4,4,5,6,6,3,0,9,6,5,7,2,0,9,3,4,2,3,9,1, 9,9,9,3,8,9,3,4,1,5,0,5,2,7,0,8,8,0,4,5,0,3,6,8,1,7,8,8,7,1, 3,2,7,7,1,8,0,3,7,5,2,6,4,0,9,9,7,7,4,6,2,0,0,1,7,3,6,6,1,1, 2,4,5,9,8,2,8,8,3,5 }; static void hash( int *counter_0, int *counter_1, int *counter_2, int *counter_3, int *counter_4, int *counter_5, int *counter_6, int *counter_7) { register int iteration = 0; int seed_0 = 0; int seed_1 = 0; int seed_2 = 0; int seed_3 = 0; int seed_4 = 0; int seed_5 = 0; int seed_6 = 0; int seed_7 = 0; register int substitution_index = 0; int tem_0 = 0; int tem_1 = 0; int tem_2 = 0; seed_0=(*counter_0); seed_1=(*counter_1); seed_2=(*counter_2); seed_3=(*counter_3); seed_4=(*counter_4); seed_5=(*counter_5); seed_6=(*counter_6); seed_7=(*counter_7); for (iteration=1; iteration <= 8; iteration++) { substitution_index=10*seed_1+seed_0; tem_0=substitution_low[substitution_index]; tem_1=substitution_high[substitution_index]; substitution_index=10*seed_3+seed_2; seed_0=substitution_low[substitution_index]; tem_2=substitution_high[substitution_index]; substitution_index=10*seed_5+seed_4; seed_2=substitution_low[substitution_index]; seed_1=substitution_high[substitution_index]; substitution_index=10*seed_7+seed_6; seed_5=substitution_low[substitution_index]; seed_7=substitution_high[substitution_index]; seed_3=tem_0; seed_6=tem_1; seed_4=tem_2; } (*counter_0)=seed_0; (*counter_1)=seed_1; (*counter_2)=seed_2; (*counter_3)=seed_3; (*counter_4)=seed_4; (*counter_5)=seed_5; (*counter_6)=seed_6; (*counter_7)=seed_7; return; } static void increment( int *counter_0, int *counter_1, int *counter_2, int *counter_3, int *counter_4, int *counter_5, int *counter_6, int *counter_7) { register int tem = 0; tem=(*counter_0)+1; if (tem <= 9) (*counter_0)=tem; else { (*counter_0)=0; tem=(*counter_1)+1; if (tem <= 9) (*counter_1)=tem; else { (*counter_1)=0; tem=(*counter_2)+1; if (tem <= 9) (*counter_2)=tem; else { (*counter_2)=0; tem=(*counter_3)+1; if (tem <= 9) (*counter_3)=tem; else { (*counter_3)=0; tem=(*counter_4)+1; if (tem <= 9) (*counter_4)=tem; else { (*counter_4)=0; tem=(*counter_5)+1; if (tem <= 9) (*counter_5)=tem; else { (*counter_5)=0; tem=(*counter_6)+1; if (tem <= 9) (*counter_6)=tem; else { (*counter_6)=0; tem=(*counter_7)+1; if (tem <= 9) (*counter_7)=tem; else (*counter_7)=0; } } } } } } } return; } static void evaluate_and_transform( volatile double x_min, volatile double x_max, volatile double y_min, volatile double y_max, volatile int num_x_divisions, volatile int num_y_divisions, volatile double rotation, volatile double tilt, volatile float * volatile x_prime, volatile float * volatile y_prime, volatile float * volatile z_prime, volatile double * x_prime_max, volatile double * y_prime_min, volatile double * y_prime_max, volatile double * z_prime_min, volatile double * z_prime_max, volatile vertex_rec * light, volatile int * volatile x_division_index, volatile int * volatile y_division_index) { double cos_rotation = 0.0; double cos_tilt = 0.0; double magnitude = 0.0; long prime_num = 0l; double radians = 0.0; double radians_per_degree = 0.0; double sin_rotation = 0.0; double sin_tilt = 0.0; double x = 0.0; double x_delta = 0.0; register int x_division_num = 0; double x_rotated = 0.0; double y = 0.0; double y_delta = 0.0; register int y_division_num = 0; double z = 0.0; DosEnterCritSec(); strcpy((unsigned char *) &titillator[0],"Evaluating..."); DosExitCritSec(); radians_per_degree=atan((double) 1.0)/((double) 45.0); radians=tilt*radians_per_degree; cos_tilt=cos(radians); sin_tilt=sin(radians); radians=rotation*radians_per_degree; cos_rotation=cos(radians); sin_rotation=sin(radians); z=f(x_min,y_min); x_rotated=x_min*cos_rotation+y_min*sin_rotation; *y_prime_min=-x_min*sin_rotation+y_min*cos_rotation; *z_prime_min=-x_rotated*sin_tilt+z*cos_tilt; *y_prime_max=*y_prime_min; *z_prime_max=*z_prime_min; *x_prime_max=x_rotated*cos_tilt+z*sin_tilt; x_delta=(double) (num_x_divisions-1); x_delta=(x_max-x_min)/x_delta; y_delta=(double) (num_y_divisions-1); y_delta=(y_max-y_min)/y_delta; x=x_min; prime_num=0l; for (x_division_num=0; ((! size_maze_kill) && (x_division_num < num_x_divisions)); x_division_num++) { y=y_min; for (y_division_num=0; ((! size_maze_kill) && (y_division_num < num_y_divisions)); y_division_num++) { z=f(x,y); z=fabs(z); x_division_index[prime_num]=x_division_num; y_division_index[prime_num]=y_division_num; x_rotated=x*cos_rotation+y*sin_rotation; y_prime[prime_num]=(float) (-x*sin_rotation+y*cos_rotation); x_prime[prime_num]=(float) (x_rotated*cos_tilt+z*sin_tilt); z_prime[prime_num]=(float) (-x_rotated*sin_tilt+z*cos_tilt); if (((double) (x_prime[prime_num])) > *x_prime_max) *x_prime_max=(double) (x_prime[prime_num]); if (((double) (y_prime[prime_num])) < *y_prime_min) *y_prime_min=(double) (y_prime[prime_num]); if (((double) (y_prime[prime_num])) > *y_prime_max) *y_prime_max=(double) (y_prime[prime_num]); if (((double) (z_prime[prime_num])) < *z_prime_min) *z_prime_min=(double) (z_prime[prime_num]); if (((double) (z_prime[prime_num])) > *z_prime_max) *z_prime_max=(double) (z_prime[prime_num]); y+=y_delta; prime_num++; } x+=x_delta; } if ((! size_maze_kill)) { magnitude=(*light).x*(*light).x; magnitude+=((*light).y*(*light).y); magnitude+=((*light).z*(*light).z); magnitude=sqrt(magnitude); (*light).x/=magnitude; (*light).y/=magnitude; (*light).z/=magnitude; } return; } static void shade( volatile int num_x_divisions, volatile int num_y_divisions, volatile float * volatile x_prime, volatile float * volatile y_prime, volatile float * volatile z_prime, volatile unsigned char * volatile color, volatile vertex_rec * light) { double magnitude = 0.0; vertex_rec normal = {0.0,0.0,0.0}; long prime_num = 0l; vertex_rec vertex [4] = {{0.0,0.0,0.0},{0.0,0.0,0.0},{0.0,0.0,0.0},{0.0,0.0,0.0}}; register int x_division_num = 0; register int y_division_num = 0; DosEnterCritSec(); strcpy((unsigned char *) &titillator[0],"Shading..."); DosExitCritSec(); for (x_division_num=0; ((! size_maze_kill) && (x_division_num < num_x_divisions)); x_division_num++) { for (y_division_num=0; ((! size_maze_kill) && (y_division_num < num_y_divisions)); y_division_num++) { vertex[0].x=(double) (x_prime[prime_num]); vertex[0].y=(double) (y_prime[prime_num]); vertex[0].z=(double) (z_prime[prime_num]); if (x_division_num < (num_x_divisions-1)) if (y_division_num < (num_y_divisions-1)) { prime_num+=((long) num_y_divisions); vertex[1].x=(double) (x_prime[prime_num]); vertex[1].y=(double) (y_prime[prime_num]); vertex[1].z=(double) (z_prime[prime_num]); prime_num++; vertex[2].x=(double) (x_prime[prime_num]); vertex[2].y=(double) (y_prime[prime_num]); vertex[2].z=(double) (z_prime[prime_num]); prime_num-=((long) num_y_divisions); vertex[3].x=(double) (x_prime[prime_num]); vertex[3].y=(double) (y_prime[prime_num]); vertex[3].z=(double) (z_prime[prime_num]); prime_num--; } else { prime_num--; vertex[1].x=(double) (x_prime[prime_num]); vertex[1].y=(double) (y_prime[prime_num]); vertex[1].z=(double) (z_prime[prime_num]); prime_num+=((long) num_y_divisions); vertex[2].x=(double) (x_prime[prime_num]); vertex[2].y=(double) (y_prime[prime_num]); vertex[2].z=(double) (z_prime[prime_num]); prime_num++; vertex[3].x=(double) (x_prime[prime_num]); vertex[3].y=(double) (y_prime[prime_num]); vertex[3].z=(double) (z_prime[prime_num]); prime_num-=((long) num_y_divisions); } else if (y_division_num < (num_y_divisions-1)) { prime_num++; vertex[1].x=(double) (x_prime[prime_num]); vertex[1].y=(double) (y_prime[prime_num]); vertex[1].z=(double) (z_prime[prime_num]); prime_num-=((long) num_y_divisions); vertex[2].x=(double) (x_prime[prime_num]); vertex[2].y=(double) (y_prime[prime_num]); vertex[2].z=(double) (z_prime[prime_num]); prime_num--; vertex[3].x=(double) (x_prime[prime_num]); vertex[3].y=(double) (y_prime[prime_num]); vertex[3].z=(double) (z_prime[prime_num]); prime_num+=((long) num_y_divisions); } else { prime_num-=((long) num_y_divisions); vertex[1].x=(double) (x_prime[prime_num]); vertex[1].y=(double) (y_prime[prime_num]); vertex[1].z=(double) (z_prime[prime_num]); prime_num--; vertex[2].x=(double) (x_prime[prime_num]); vertex[2].y=(double) (y_prime[prime_num]); vertex[2].z=(double) (z_prime[prime_num]); prime_num+=((long) num_y_divisions); vertex[3].x=(double) (x_prime[prime_num]); vertex[3].y=(double) (y_prime[prime_num]); vertex[3].z=(double) (z_prime[prime_num]); prime_num++; } normal.x =(vertex[1].y-vertex[0].y)*(vertex[3].z-vertex[0].z) -(vertex[3].y-vertex[0].y)*(vertex[1].z-vertex[0].z) +(vertex[2].y-vertex[1].y)*(vertex[0].z-vertex[1].z) -(vertex[0].y-vertex[1].y)*(vertex[2].z-vertex[1].z) +(vertex[3].y-vertex[2].y)*(vertex[1].z-vertex[2].z) -(vertex[1].y-vertex[2].y)*(vertex[3].z-vertex[2].z) +(vertex[0].y-vertex[3].y)*(vertex[2].z-vertex[3].z) -(vertex[2].y-vertex[3].y)*(vertex[0].z-vertex[3].z); normal.y =(vertex[3].x-vertex[0].x)*(vertex[1].z-vertex[0].z) -(vertex[1].x-vertex[0].x)*(vertex[3].z-vertex[0].z) +(vertex[0].x-vertex[1].x)*(vertex[2].z-vertex[1].z) -(vertex[2].x-vertex[1].x)*(vertex[0].z-vertex[1].z) +(vertex[1].x-vertex[2].x)*(vertex[3].z-vertex[2].z) -(vertex[3].x-vertex[2].x)*(vertex[1].z-vertex[2].z) +(vertex[2].x-vertex[3].x)*(vertex[0].z-vertex[3].z) -(vertex[0].x-vertex[3].x)*(vertex[2].z-vertex[3].z); normal.z =(vertex[1].x-vertex[0].x)*(vertex[3].y-vertex[0].y) -(vertex[3].x-vertex[0].x)*(vertex[1].y-vertex[0].y) +(vertex[2].x-vertex[1].x)*(vertex[0].y-vertex[1].y) -(vertex[0].x-vertex[1].x)*(vertex[2].y-vertex[1].y) +(vertex[3].x-vertex[2].x)*(vertex[1].y-vertex[2].y) -(vertex[1].x-vertex[2].x)*(vertex[3].y-vertex[2].y) +(vertex[0].x-vertex[3].x)*(vertex[2].y-vertex[3].y) -(vertex[2].x-vertex[3].x)*(vertex[0].y-vertex[3].y); if (normal.x < 0.0) color[prime_num]=NUM_COLORS; else { magnitude =sqrt(normal.x*normal.x+normal.y*normal.y+normal.z*normal.z); if (magnitude == 0.0) color[prime_num]=(unsigned char) 0; else { color[prime_num] =(unsigned char) ((((float) (NUM_COLORS-1))/2.0)*(1.0 +((*light).x*normal.x+(*light).y*normal.y +(*light).z*normal.z)/magnitude)); if (color[prime_num] >= (unsigned char) (NUM_COLORS-1)) color[prime_num]=(unsigned char) (NUM_COLORS-2); } } prime_num++; } } return; } static void adjust_perspective( volatile int num_x_divisions, volatile int num_y_divisions, volatile float * volatile x_prime, volatile float * volatile y_prime, volatile float * volatile z_prime, volatile double x_prime_max, volatile double y_prime_min, volatile double y_prime_max, volatile double z_prime_min, volatile double z_prime_max) { long prime_num = 0l; vertex_rec vertex [4] = {{0.0,0.0,0.0},{0.0,0.0,0.0},{0.0,0.0,0.0},{0.0,0.0,0.0}}; register int x_division_num = 0; double x_eye = 0.0; double y_center = 0.0; register int y_division_num = 0; double z_center = 0.0; DosEnterCritSec(); strcpy((unsigned char *) &titillator[0],"Adjusting..."); DosExitCritSec(); if ((y_prime_max-y_prime_min) > (z_prime_max-z_prime_min)) x_eye=1.1*(y_prime_max-y_prime_min)+x_prime_max; else x_eye=1.1*(z_prime_max-z_prime_min)+x_prime_max; if (((y_prime_max-y_prime_min) > (z_prime_max-z_prime_min)) || (z_prime_max != z_prime_min)) { y_center=(y_prime_max+y_prime_min)/2.0; z_center=(z_prime_max+z_prime_min)/2.0; prime_num=0l; for (x_division_num=0; ((! size_maze_kill) && (x_division_num < num_x_divisions)); x_division_num++) { for (y_division_num=0; ((! size_maze_kill) && (y_division_num < num_y_divisions)); y_division_num++) { vertex[0].x=(double) (x_prime[prime_num]); vertex[0].y=(double) (y_prime[prime_num]); vertex[0].z=(double) (z_prime[prime_num]); if (x_division_num < (num_x_divisions-1)) if (y_division_num < (num_y_divisions-1)) { prime_num+=((long) num_y_divisions); vertex[1].x=(double) (x_prime[prime_num]); vertex[1].y=(double) (y_prime[prime_num]); vertex[1].z=(double) (z_prime[prime_num]); prime_num++; vertex[2].x=(double) (x_prime[prime_num]); vertex[2].y=(double) (y_prime[prime_num]); vertex[2].z=(double) (z_prime[prime_num]); prime_num-=((long) num_y_divisions); vertex[3].x=(double) (x_prime[prime_num]); vertex[3].y=(double) (y_prime[prime_num]); vertex[3].z=(double) (z_prime[prime_num]); prime_num--; } else { prime_num--; vertex[1].x=(double) (x_prime[prime_num]); vertex[1].y=(double) (y_prime[prime_num]); vertex[1].z=(double) (z_prime[prime_num]); prime_num+=((long) num_y_divisions); vertex[2].x=(double) (x_prime[prime_num]); vertex[2].y=(double) (y_prime[prime_num]); vertex[2].z=(double) (z_prime[prime_num]); prime_num++; vertex[3].x=(double) (x_prime[prime_num]); vertex[3].y=(double) (y_prime[prime_num]); vertex[3].z=(double) (z_prime[prime_num]); prime_num-=((long) num_y_divisions); } else if (y_division_num < (num_y_divisions-1)) { prime_num++; vertex[1].x=(double) (x_prime[prime_num]); vertex[1].y=(double) (y_prime[prime_num]); vertex[1].z=(double) (z_prime[prime_num]); prime_num-=((long) num_y_divisions); vertex[2].x=(double) (x_prime[prime_num]); vertex[2].y=(double) (y_prime[prime_num]); vertex[2].z=(double) (z_prime[prime_num]); prime_num--; vertex[3].x=(double) (x_prime[prime_num]); vertex[3].y=(double) (y_prime[prime_num]); vertex[3].z=(double) (z_prime[prime_num]); prime_num+=((long) num_y_divisions); } else { prime_num-=((long) num_y_divisions); vertex[1].x=(double) (x_prime[prime_num]); vertex[1].y=(double) (y_prime[prime_num]); vertex[1].z=(double) (z_prime[prime_num]); prime_num--; vertex[2].x=(double) (x_prime[prime_num]); vertex[2].y=(double) (y_prime[prime_num]); vertex[2].z=(double) (z_prime[prime_num]); prime_num+=((long) num_y_divisions); vertex[3].x=(double) (x_prime[prime_num]); vertex[3].y=(double) (y_prime[prime_num]); vertex[3].z=(double) (z_prime[prime_num]); prime_num++; } y_prime[prime_num]=(float) (y_center +(vertex[0].y-y_center)*(x_eye-x_prime_max) /(x_eye-vertex[0].x)); z_prime[prime_num]=(float) (z_center +(vertex[0].z-z_center)*(x_eye-x_prime_max) /(x_eye-vertex[0].x)); x_prime[prime_num]=(float) (-(vertex[0].x+vertex[1].x+vertex[2].x+vertex[3].x)/4.0); prime_num++; } } } return; } static void sort_back_to_front( volatile long num_primes, volatile float * volatile x_prime, volatile int * volatile x_division_index, volatile int * volatile y_division_index) { int finished = 0; long key_index_1 = 0l; long key_index_2 = 0l; long left = 0l; long right = 0l; float t1 = (float) 0.0; register int t2 = 0; register int t3 = 0; DosEnterCritSec(); strcpy((unsigned char *) &titillator[0],"Sorting..."); DosExitCritSec(); left=num_primes/((long) 2); right=num_primes-1l; t1=x_prime[0]; t2=x_division_index[0]; t3=y_division_index[0]; while ((! size_maze_kill) && (right > 0l)) { if (left > 0l) { left--; t1=x_prime[left]; t2=x_division_index[left]; t3=y_division_index[left]; } else { t1=x_prime[right]; t2=x_division_index[right]; t3=y_division_index[right]; x_prime[right]=x_prime[0]; x_division_index[right]=x_division_index[0]; y_division_index[right]=y_division_index[0]; right--; } if (right > 0l) { finished=FALSE; key_index_2=left; while (! finished) { key_index_1=key_index_2; key_index_2+=key_index_2; key_index_2++; if (key_index_2 > right) finished=TRUE; else { if (key_index_2 != right) { if (x_prime[key_index_2] > x_prime[key_index_2+1]) key_index_2++; } if (t1 <= x_prime[key_index_2]) finished=TRUE; else { x_prime[key_index_1]=x_prime[key_index_2]; x_division_index[key_index_1] =x_division_index[key_index_2]; y_division_index[key_index_1] =y_division_index[key_index_2]; } } } x_prime[key_index_1]=t1; x_division_index[key_index_1]=t2; y_division_index[key_index_1]=t3; } } x_prime[0]=t1; x_division_index[0]=t2; y_division_index[0]=t3; return; } static void plot( volatile int num_x_divisions, volatile int * volatile x_division_index, volatile int num_y_divisions, volatile int * volatile y_division_index, volatile long num_primes, volatile float * volatile y_prime, volatile float * volatile z_prime, volatile double y_prime_min, volatile double y_prime_max, volatile double z_prime_min, volatile double z_prime_max, volatile unsigned char * volatile color) { POINTL box [4] = {{0l,0l},{0l,0l},{0l,0l},{0l,0l}}; int box_num = 0; short color_num = (short) 0; BYTE jobid = (BYTE) 0; LONG outdata = 0l; double pixels_per_unit = 0.0; long prime_num = 0l; POINTL ptlPosition = { 0l,0l }; long rgb [NUM_COLORS] = { 0l,0l,0l,0l,0l,0l,0l,0l,0l,0l,0l,0l,0l,0l,0l,0l }; long rgb_increment = 0l; SIZEL sizl = { 0l,0l }; long tint = 0l; vertex_rec vertex [4] = {{0.0,0.0,0.0},{0.0,0.0,0.0},{0.0,0.0,0.0},{0.0,0.0,0.0}}; int x_division_num = 0; long x_prime_num = 0l; int y_division_num = 0; double y_offset = 0.0; double y_out_max = 0.0; double z_offset = 0.0; double z_out_max = 0.0; DosEnterCritSec(); strcpy((unsigned char *) &titillator[0],"Plotting..."); DosExitCritSec(); sizl.cx=0; sizl.cy=0; hPS=GpiCreatePS(habPrint,dev_context_handle,&sizl, ((ULONG) PU_PELS)|((ULONG) GPIA_ASSOC)); if ((ULONG) hPS == (ULONG) GPI_ERROR) { DosEnterCritSec(); strcpy((unsigned char *) &titillator[0],"Cannot create PS!"); DosExitCritSec(); } else { outdata=0; if (DevEscape(dev_context_handle,DEVESC_STARTDOC,8l, (PBYTE) "LPTHEX",&outdata,(PBYTE) NULL) != DEV_OK) { DosEnterCritSec(); strcpy((unsigned char *) &titillator[0],"Cannot start doc!"); DosExitCritSec(); } else { if (! GpiErase(hPS)) { DosEnterCritSec(); sprintf((unsigned char *) &titillator[0], "GpiErase error 0x%4X",WinGetLastError(habPrint)%65536); DosExitCritSec(); size_maze_kill=TRUE; } if (! size_maze_kill) { rgb_increment=0x111111; tint=0l; for (color_num=0; color_num < (NUM_COLORS-1); color_num++) { rgb[color_num]=tint; tint+=rgb_increment; } rgb[NUM_COLORS-1]=0xff0000; if (! GpiCreateLogColorTable(hPS,LCOL_RESET,LCOLF_CONSECRGB, 0L,16L,&rgb[0])) { DosEnterCritSec(); sprintf((unsigned char *) &titillator[0], "GpiCreateLogColorTable error 0x%4X", WinGetLastError(habPrint)%65536); DosExitCritSec(); size_maze_kill=TRUE; } } if (! size_maze_kill) { y_out_max=(double) iMaxX; z_out_max=(double) iMaxY; if (aspect_ratio*z_out_max*(y_prime_max-y_prime_min) > y_out_max*(z_prime_max-z_prime_min)) { pixels_per_unit =y_out_max/(aspect_ratio*(y_prime_max-y_prime_min)); y_offset=0.0; z_offset =(z_out_max-pixels_per_unit *(z_prime_max-z_prime_min))/2.0; } else if (aspect_ratio*z_out_max*(y_prime_max-y_prime_min) < y_out_max*(z_prime_max-z_prime_min)) { pixels_per_unit=z_out_max/(z_prime_max-z_prime_min); y_offset=(y_out_max -aspect_ratio*pixels_per_unit *(y_prime_max-y_prime_min))/2.0; z_offset=0.0; } else { pixels_per_unit=1.0; y_offset=y_out_max/2.0; z_offset=z_out_max/2.0; } } for (x_prime_num=0l; ((! size_maze_kill) && (x_prime_num < num_primes)); x_prime_num++) { x_division_num=x_division_index[x_prime_num]; if (x_division_num < (num_x_divisions-1)) { y_division_num=y_division_index[x_prime_num]; if (y_division_num < (num_y_divisions-1)) { prime_num =((long) num_y_divisions)*((long) x_division_num) +((long) y_division_num); color_num=(short) (color[prime_num]); if (color_num < NUM_COLORS) { vertex[0].y=(double) (y_prime[prime_num]); vertex[0].z=(double) (z_prime[prime_num]); prime_num+=((long) num_y_divisions); vertex[1].y=(double) (y_prime[prime_num]); vertex[1].z=(double) (z_prime[prime_num]); prime_num++; vertex[2].y=(double) (y_prime[prime_num]); vertex[2].z=(double) (z_prime[prime_num]); prime_num-=((long) num_y_divisions); vertex[3].y=(double) (y_prime[prime_num]); vertex[3].z=(double) (z_prime[prime_num]); for (box_num=0; box_num < 4; box_num++) { box[box_num].x=(long) (y_offset +pixels_per_unit*aspect_ratio *(vertex[box_num].y-y_prime_min)); box[box_num].y=(long) (z_offset +pixels_per_unit *(vertex[box_num].z-z_prime_min)); } if (GpiBeginPath(hPS,1L)) { ptlPosition.x=box[3].x; ptlPosition.y=box[3].y; if (GpiMove(hPS,&ptlPosition)) if (GpiPolyLine(hPS,4l,box) == GPI_ERROR) { DosEnterCritSec(); sprintf((unsigned char *) &titillator[0], "GpiPolyLine error 0x%4X", WinGetLastError(habPrint)%65536); DosExitCritSec(); size_maze_kill=TRUE; } else if (GpiEndPath(hPS)) if (GpiSetColor(hPS,color_num)) { if (GpiFillPath(hPS,1l, FPATH_ALTERNATE) == GPI_ERROR) { DosEnterCritSec(); sprintf((unsigned char *) &titillator[0], "GpiSetColor error 0x%4X", WinGetLastError(habPrint) %65536); DosExitCritSec(); size_maze_kill=TRUE; } } else { DosEnterCritSec(); sprintf((unsigned char *) &titillator[0], "GpiSetColor error 0x%4X", WinGetLastError(habPrint)%65536); DosExitCritSec(); size_maze_kill=TRUE; } else { DosEnterCritSec(); sprintf((unsigned char *) &titillator[0], "GpiEndPath error 0x%4X", WinGetLastError(habPrint)%65536); DosExitCritSec(); size_maze_kill=TRUE; } else { DosEnterCritSec(); sprintf((unsigned char *) &titillator[0], "GpiMove error 0x%4X", WinGetLastError(habPrint)%65536); DosExitCritSec(); size_maze_kill=TRUE; } } else { DosEnterCritSec(); sprintf((unsigned char *) &titillator[0], "GpiBeginPath error 0x%4X", WinGetLastError(habPrint)%65536); DosExitCritSec(); size_maze_kill=TRUE; } } } } } if (size_maze_kill) DevEscape(dev_context_handle,DEVESC_ABORTDOC,0l,(PBYTE) NULL, &outdata,(PBYTE) NULL); else { DevEscape(dev_context_handle,DEVESC_NEWFRAME,0l,(PBYTE) NULL, &outdata,(PBYTE) NULL); outdata=2; DevEscape(dev_context_handle,DEVESC_ENDDOC,0l,(PBYTE) NULL, &outdata,(PBYTE) &jobid); } } GpiAssociate(hPS,(HDC) NULL); GpiDestroyPS(hPS); } DevCloseDC(dev_context_handle); WinTerminate((HAB) habPrint); if (! size_maze_kill) { DosEnterCritSec(); WinPostMsg(plot_hwnd,(ULONG) WM_PLOT_DONE,(MPARAM) NULL, (MPARAM) NULL); DosExitCritSec(); } return; } static void destroy_maze( volatile float * volatile *x_prime, volatile float * volatile *y_prime, volatile float * volatile *z_prime, volatile int * volatile *x_division_index, volatile int * volatile *y_division_index, volatile unsigned char * volatile *color, volatile stack_rec * volatile *stack) { int y = 0; if (*stack != (volatile stack_rec * volatile) NULL) { free((void *) *stack); *stack=(volatile stack_rec * volatile) NULL; } if (*color != (unsigned char * volatile) NULL) { free((void *) *color); *color=(volatile unsigned char * volatile) NULL; } if (*y_division_index != (int * volatile) NULL) { free((void *) *y_division_index); *y_division_index=(volatile int * volatile) NULL; } if (*x_division_index != (int * volatile) NULL) { free((void *) *x_division_index); *x_division_index=(volatile int * volatile) NULL; } if (*z_prime != (float * volatile) NULL) { free((void *) *z_prime); *z_prime=(volatile float * volatile) NULL; } if (*y_prime != (float * volatile) NULL) { free((void *) *y_prime); *y_prime=(volatile float * volatile) NULL; } if (*x_prime != (float * volatile) NULL) { free((void *) *x_prime); *x_prime=(volatile float * volatile) NULL; } if (page != (char ** volatile) NULL) { for (y=0; y < num_y_dots; y++) free((void *) (page[y])); free((void *) page); page=(volatile char * volatile * volatile) NULL; } if (base_page != (char ** volatile) NULL) { for (y=0; y < max_y_plus_1; y++) free((void *) (base_page[y])); free((void *) base_page); base_page=(volatile char * volatile * volatile) NULL; } return; } static double f( double x, double y) { register int x_out = 0; register int y_out = 0; double z = 0.0; y_out=(int) x; if (y_out < 0) z=0.0; else if (y_out > y_dot_max) z=0.0; else { x_out=(int) y; if (x_out < 0) z=0.0; else if (x_out > x_dot_max) z=0.0; else if (page[y_out][x_out] == 'W') z=((double) (5*RESOLUTION)); else z=0.0; } return(z); }