?? sandsand.cpp
字號:
/*---------------------------------------
MULTI1.C -- Multitasking Demo
(c) Charles Petzold, 1998
---------------------------------------*/
#include <stdafx.h>
#include <math.h>
#include "stdlib.h"
/*
!!!!!變量說明
!!UNEW[i],UREN[I],UOLD[i] U(n+1),U(n),U(n-1)流速值
!!HNEW[i],HREN[I],HOLD[i] H(n+1),H(n),H(n-1)的水深值
!!S1,S2 上游和下游邊界的波浪波高
!!IMAX=800 斷面個數
!!HO 初始水深值
!!DT=30 時間步長
!!DX=1000 距離步長
*/
int IMAX=800;
int i,I;
double UNEW[801],UREN[801],UOLD[801],HNEW[801],HREN[801],HOLD[801];
double H0=10.0,DT=30,DX=1000;
double C=122.3167,W=2*3.142/12.4/3600,G=9.81,S1=1.5,S2 ,T;
int IMAX1=IMAX-1;
LRESULT CALLBACK WndProc (HWND, UINT, WPARAM, LPARAM) ;
int cyChar ;
int WINAPI WinMain (HINSTANCE hInstance, HINSTANCE hPrevInstance,
PSTR szCmdLine, int iCmdShow)
{
for(i=0;i<=IMAX;i++)
{
HNEW[i]=1.5*(800-i)/800;
HOLD[i]=1.5*(800-i)/800;
UNEW[i]=0.0;
UOLD[i]=0.0;
}
//!歐拉步進
for(I=1;I<=IMAX1;I++)
{
HREN[I]=HOLD[I]-DT/2./DX*(10.0+HOLD[I])*(UOLD[I+1]-UOLD[I-1]);
UREN[I]=UOLD[I]-DT/2./DX*G*(HOLD[I+1]-HOLD[I-1]);
// UREN[I]=UOLD[I]-DT/2/DX*G*(HOLD[I+1]-HOLD[I-1])-DT*B/(10.0+HOLD[I])*ABS(UOLD[I])*UOLD[I]
}
UREN[IMAX]=UREN[IMAX1];
UREN[0]=UREN[1];
HREN[0]=1.5;
HREN[IMAX]=0.;
static TCHAR szAppName[] = TEXT ("Multi1") ;
HWND hwnd ;
MSG msg ;
WNDCLASS wndclass ;
wndclass.style = CS_HREDRAW | CS_VREDRAW ;
wndclass.lpfnWndProc = WndProc ;
wndclass.cbClsExtra = 0 ;
wndclass.cbWndExtra = 0 ;
wndclass.hInstance = hInstance ;
wndclass.hIcon = LoadIcon (NULL, IDI_APPLICATION) ;
wndclass.hCursor = LoadCursor (NULL, IDC_ARROW) ;
wndclass.hbrBackground = (HBRUSH) GetStockObject (WHITE_BRUSH) ;
wndclass.lpszMenuName = NULL ;
wndclass.lpszClassName = szAppName ;
if (!RegisterClass (&wndclass))
{
MessageBox (NULL, TEXT ("This program requires Windows NT!"),
szAppName, MB_ICONERROR) ;
return 0 ;
}
hwnd = CreateWindow (szAppName, TEXT ("Multitasking Demo"),
WS_OVERLAPPEDWINDOW,
CW_USEDEFAULT, CW_USEDEFAULT,
CW_USEDEFAULT, CW_USEDEFAULT,
NULL, NULL, hInstance, NULL) ;
ShowWindow (hwnd, iCmdShow) ;
UpdateWindow (hwnd) ;
while (GetMessage (&msg, NULL, 0, 0))
{
TranslateMessage (&msg) ;
DispatchMessage (&msg) ;
}
return msg.wParam ;
}
int CheckBottom (HWND hwnd, int cyClient, int iLine)
{
if (iLine * cyChar + cyChar > cyClient)
{
InvalidateRect (hwnd, NULL, TRUE) ;
UpdateWindow (hwnd) ;
iLine = 0 ;
}
return iLine ;
}
// ------------------------------------------------
// Window 1: Display increasing sequence of numbers
// ------------------------------------------------
#define NUM 1000
#define TWOPI (2 * 3.14159)
LRESULT APIENTRY WndProc1 (HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
{
static int cxClient, cyClient ;
static int iAdd=0;
HDC hdc ;
int i ,j;
// PAINTSTRUCT ps ;
POINT apt [801] ;
switch (message)
{
//case WM_CREATE:
case WM_SIZE:
cxClient = LOWORD (lParam) ;
cyClient = HIWORD (lParam) ;
return 0 ;
case WM_TIMER:
InvalidateRect (hwnd, NULL, TRUE) ;
UpdateWindow (hwnd) ;
for(j=0;j<801;j++)
{
apt[j].x=(800-j)*cxClient/800;
apt[j].y=cyClient-100.0;
}
T=T+DT;
S2=0.5*sin(W*T);
HNEW[IMAX]=S2;
HNEW[0]=1.5;
for( I=0;I<=IMAX1;I++)
{
HNEW[I]=HOLD[I]-DT/DX*(10.0+HREN[I])*(UREN[I+1]-UREN[I-1]);
UNEW[I]=UOLD[I]-DT/DX*G*(HREN[I+1]-HREN[I-1])-2.0*DT*G*abs(UOLD[I])*UREN[I]/C/C/(10.0+HREN[I]);
}
UNEW[IMAX]=UNEW[IMAX1];
UNEW[0]=UNEW[1];
for(I=0;I<=IMAX;I++)
{
UOLD[I]=UREN[I];
UREN[I]=UNEW[I];
HOLD[I]=HREN[I];
HREN[I]=HNEW[I];
}
for(j=0;j<801;j++)
{
apt[j].y=cyClient-100.0-HNEW[j]*100;
}
hdc = GetDC (hwnd) ;
//PolyBezier(hdc,apt,801);
Polyline (hdc, apt, 801) ;
// MoveToEx (hdc, 0, cyClient / 2, NULL) ;
// LineTo (hdc, cxClient, cyClient / 2) ;
// Polyline (hdc, aptn, NUM) ;
ReleaseDC (hwnd, hdc) ;
return 0 ;
}
return DefWindowProc (hwnd, message, wParam, lParam) ;
}
// ------------------------------------------------------
// Window 2: Display increasing sequence of prime numbers
// ------------------------------------------------------
LRESULT APIENTRY WndProc2 (HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
{
static int iNum = 1, iLine, cyClient ;
HDC hdc ;
int i, iSqrt ;
TCHAR szBuffer[16] ;
switch (message)
{
case WM_SIZE:
cyClient = HIWORD (lParam) ;
return 0 ;
case WM_TIMER:
iLine = CheckBottom (hwnd, cyClient, iLine) ;
hdc = GetDC (hwnd) ;
ReleaseDC (hwnd, hdc) ;
return 0 ;
}
return DefWindowProc (hwnd, message, wParam, lParam) ;
}
// ----------------------------------------------------------
// Window 3: Display increasing sequence of Fibonacci numbers
// ----------------------------------------------------------
LRESULT APIENTRY WndProc3 (HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
{
static int iNum = 0, iNext = 1, iLine, cyClient ;
HDC hdc ;
int iTemp ;
TCHAR szBuffer[16] ;
switch (message)
{
case WM_SIZE:
cyClient = HIWORD (lParam) ;
return 0 ;
case WM_TIMER:
if (iNum < 0)
{
iNum = 0 ;
iNext = 1 ;
}
iLine = CheckBottom (hwnd, cyClient, iLine) ;
hdc = GetDC (hwnd) ;
TextOut (hdc, 0, iLine * cyChar, szBuffer,
wsprintf (szBuffer, "%d", iNum)) ;
ReleaseDC (hwnd, hdc) ;
iTemp = iNum ;
iNum = iNext ;
iNext += iTemp ;
iLine++ ;
return 0 ;
}
return DefWindowProc (hwnd, message, wParam, lParam) ;
}
// -----------------------------------------
// Window 4: Display circles of random radii
// -----------------------------------------
#define NUM 1000
#define TWOPI (2 * 3.14159)
LRESULT APIENTRY WndProc4 (HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
{
static int cxClient, cyClient ;
static int iAdd=0;
HDC hdc ;
int i ;
// PAINTSTRUCT ps ;
POINT apto [NUM] ;
POINT aptn [NUM] ;
switch (message)
{
case WM_SIZE:
cxClient = LOWORD (lParam) ;
cyClient = HIWORD (lParam) ;
return 0 ;
case WM_TIMER:
InvalidateRect (hwnd, NULL, TRUE) ;
UpdateWindow (hwnd) ;
for (i = 0 ; i < NUM; i++)
{
apto[i].x = i * cxClient / NUM ;
apto[i].y = (int) (cyClient / 2 - 50*sin (TWOPI * i / NUM)) ;
}
for (i = 0 ; i < NUM ; i++)
{
aptn[i].x = apto[i].x;
aptn[i].y = apto[(i+iAdd)%NUM].y ;
}
iAdd++;
if(iAdd==NUM)
iAdd=0;
hdc = GetDC (hwnd) ;
MoveToEx (hdc, 0, cyClient / 2, NULL) ;
LineTo (hdc, cxClient, cyClient / 2) ;
Polyline (hdc, aptn, NUM) ;
ReleaseDC (hwnd, hdc) ;
return 0 ;
}
return DefWindowProc (hwnd, message, wParam, lParam) ;
}
// -----------------------------------
// Main window to create child windows
// -----------------------------------
LRESULT APIENTRY WndProc (HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
{
static HWND hwndChild[4] ;
static TCHAR * szChildClass[] = { TEXT ("Child1"), TEXT ("Child2"),
TEXT ("Child3"), TEXT ("Child4") } ;
static WNDPROC ChildProc[] = { WndProc1, WndProc2, WndProc3, WndProc4 } ;
HINSTANCE hInstance ;
int i, cxClient, cyClient ;
WNDCLASS wndclass ;
switch (message)
{
case WM_CREATE:
hInstance = (HINSTANCE) GetWindowLong (hwnd, GWL_HINSTANCE) ;
wndclass.style = CS_HREDRAW | CS_VREDRAW ;
wndclass.cbClsExtra = 0 ;
wndclass.cbWndExtra = 0 ;
wndclass.hInstance = hInstance ;
wndclass.hIcon = NULL ;
wndclass.hCursor = LoadCursor (NULL, IDC_ARROW) ;
wndclass.hbrBackground = (HBRUSH) GetStockObject (WHITE_BRUSH) ;
wndclass.lpszMenuName = NULL ;
for (i = 0 ; i < 4 ; i++)
{
wndclass.lpfnWndProc = ChildProc[i] ;
wndclass.lpszClassName = szChildClass[i] ;
RegisterClass (&wndclass) ;
hwndChild[i] = CreateWindow (szChildClass[i], NULL,
WS_CHILDWINDOW | WS_BORDER | WS_VISIBLE,
0, 0, 0, 0,
hwnd, (HMENU) i, hInstance, NULL) ;
}
cyChar = HIWORD (GetDialogBaseUnits ()) ;
SetTimer (hwnd, 1, 10, NULL) ;
return 0 ;
case WM_SIZE:
cxClient = LOWORD (lParam) ;
cyClient = HIWORD (lParam) ;
MoveWindow (hwndChild[0], 0,
0,
cxClient , cyClient / 2, TRUE) ;
MoveWindow (hwndChild[1], 0,
cyClient / 2,
cxClient / 2, cyClient / 2, TRUE) ;
MoveWindow (hwndChild[3], cxClient/2,
cyClient / 2,
cxClient / 2, cyClient / 2, TRUE) ;
return 0 ;
case WM_TIMER:
for (i = 0 ; i < 4 ; i++)
SendMessage (hwndChild[i], WM_TIMER, wParam, lParam) ;
return 0 ;
case WM_CHAR:
if (wParam == '\x1B')
DestroyWindow (hwnd) ;
return 0 ;
case WM_DESTROY:
KillTimer (hwnd, 1) ;
PostQuitMessage (0) ;
return 0 ;
}
return DefWindowProc (hwnd, message, wParam, lParam) ;
}
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